Move the contrib folder out of the sca trunk build as discussed on the ML

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@741038 13f79535-47bb-0310-9956-ffa450edef68

25 files changed, 4399 insertions, 0 deletions

diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/OSGiImplementation.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/OSGiImplementation.java
new file mode 100644
index 0000000000..7bcb0a1da5
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/OSGiImplementation.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.Extensible;
+import org.apache.tuscany.sca.assembly.Implementation;
+
+/**
+ *
+ * The model representing an OSGi implementation in an SCA assembly model.
+ *
+ * @version $Rev$ $Date$
+ */
+public interface OSGiImplementation extends Implementation, Extensible {
+
+    String getBundleSymbolicName();
+
+    String getBundleVersion();
+
+    String[] getImports();
+
+    List<ComponentProperty> getReferenceProperties(String referenceName);
+
+    List<ComponentProperty> getServiceProperties(String serviceName);
+
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiAnnotations.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiAnnotations.java
new file mode 100644
index 0000000000..e5a726c8c0
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiAnnotations.java
@@ -0,0 +1,325 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi.context;
+
+
+import java.lang.reflect.Method;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.ArrayList;
+import java.util.Hashtable;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.context.RequestContextFactory;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.scope.Scope;
+import org.apache.tuscany.sca.implementation.java.DefaultJavaImplementationFactory;
+import org.apache.tuscany.sca.implementation.java.IntrospectionException;
+import org.apache.tuscany.sca.implementation.java.JavaImplementation;
+import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory;
+import org.apache.tuscany.sca.implementation.java.impl.JavaScopeImpl;
+import org.apache.tuscany.sca.implementation.java.injection.JavaPropertyValueObjectFactory;
+import org.apache.tuscany.sca.implementation.java.introspect.JavaClassVisitor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.AllowsPassByReferenceProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.BaseJavaClassVisitor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.ComponentNameProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.ConstructorProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.ContextProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.ConversationProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.DestroyProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.EagerInitProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.HeuristicPojoProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.InitProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.PolicyProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.PropertyProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.ReferenceProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.ResourceProcessor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.ServiceProcessor;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.policy.PolicyFactory;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.osgi.framework.Bundle;
+
+
+/**
+ * OSGi annotation processing
+ * OSGi bundles are not introspected by OSGiImplementation when a component is created.
+ * Instead if the list of implementation classes is specified in <implementation.osgi/>,
+ * the classes are introspected when the bundle is resolved. The classes are loaded using
+ * the bundle ClassLoader, and hence the delay in annotation processing is inevitable.
+ * There is one other difference compared to implementation.java. While instances (and
+ * the instance class) are associated with a component in Java, all Java annotations from
+ * the component implementation class apply to all the component instances. In OSGi, 
+ * instances are associated with services, and a bundle can register multiple services.
+ * Hence annotations from classes need to be stored separately so that the right ones
+ * can be associated with the service instance.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiAnnotations  {
+    
+    private Scope scope = Scope.COMPOSITE;
+    private boolean isEagerInit;
+    
+    private String[] classList;
+    
+    private Bundle[] bundles;    
+    
+    private RuntimeComponent runtimeComponent;
+    private JavaPropertyValueObjectFactory propertyValueFactory;
+    private ProxyFactory proxyFactory;
+    
+    private JavaImplementationFactory javaImplementationFactory;
+    private JavaInterfaceFactory javaInterfaceFactory; 
+    private PolicyFactory policyFactory;
+    private RequestContextFactory requestContextFactory;
+    
+    private Hashtable<Class<?>, JavaImplementation> javaAnnotationInfo = 
+        new Hashtable<Class<?>, JavaImplementation>();
+    private Hashtable<JavaImplementation, OSGiPropertyInjector> propertyInjectors = 
+        new Hashtable<JavaImplementation, OSGiPropertyInjector>();
+    
+    private long maxAge = -1;
+    private long maxIdleTime = -1;
+    
+    private boolean annotationsProcessed;
+    
+    
+    
+    public OSGiAnnotations(ModelFactoryExtensionPoint modelFactories, 
+            String[] classList,
+            RuntimeComponent runtimeComponent,
+            JavaPropertyValueObjectFactory propertyValueFactory,
+            ProxyFactory proxyFactory,
+            RequestContextFactory requestContextFactory,
+            Bundle mainBundle, 
+            ArrayList<Bundle> dependentBundles) {
+        
+       
+        this.classList = classList;
+        this.runtimeComponent = runtimeComponent;
+        this.propertyValueFactory = propertyValueFactory;
+        this.proxyFactory = proxyFactory;
+        
+        AssemblyFactory assemblyFactory = modelFactories.getFactory(AssemblyFactory.class);
+        this.javaInterfaceFactory = modelFactories.getFactory(JavaInterfaceFactory.class);
+        this.javaImplementationFactory = createJavaImplementationFactory(assemblyFactory);
+        this.policyFactory = modelFactories.getFactory(PolicyFactory.class);
+        
+        bundles = new Bundle[dependentBundles.size() + 1];
+        bundles[0] = mainBundle;
+        for (int i = 0; i < dependentBundles.size(); i++)
+            bundles[i + 1] = dependentBundles.get(i);
+        
+    }
+    
+
+    public void processAnnotations() throws IntrospectionException {
+        
+        if (annotationsProcessed)
+            return;
+        annotationsProcessed = true;
+        for (String className : classList) {
+            for (Bundle bundle : bundles) {
+                try {
+                    Class<?> clazz = bundle.loadClass(className);
+ 
+                    processAnnotations(clazz);
+                    
+                    break;
+                    
+                } catch (ClassNotFoundException e) {                    
+                }
+            }
+        }
+    }
+    
+    
+    public void injectProperties(Object instance) {
+        JavaImplementation javaImpl = getAnnotationInfo(instance);
+        if (javaImpl != null) {
+            OSGiPropertyInjector injector = propertyInjectors.get(javaImpl);
+            if (injector != null)
+                injector.injectProperties(instance);
+        }
+    }
+
+
+    public Scope getScope() {
+        return scope;
+    }
+    
+   
+
+    public boolean isAllowsPassByReference(Object instance, Method method) {
+        
+        JavaImplementation javaImpl = getAnnotationInfo(instance);
+        if (javaImpl == null) {
+            return false;
+        }
+        if (javaImpl.isAllowsPassByReference()) {
+            return true;
+        }
+        return javaImpl.isAllowsPassByReference(method);
+    }
+    
+    
+    public boolean isEagerInit() {
+        return isEagerInit;
+    }
+
+    public long getMaxAge() {
+        return maxAge;
+    }
+
+    public long getMaxIdleTime() {
+        return maxIdleTime;
+    }
+    
+    public Method getInitMethod(Object instance) {
+        JavaImplementation javaImpl = getAnnotationInfo(instance);
+        return javaImpl == null? null : javaImpl.getInitMethod();
+    }
+    
+
+    public Method getDestroyMethod(Object instance) {
+        JavaImplementation javaImpl = getAnnotationInfo(instance);
+        return javaImpl == null? null : javaImpl.getDestroyMethod();       
+    }
+    
+
+    /*
+     * Get the annotation corresponding to an instance
+     * 
+     */
+    private JavaImplementation getAnnotationInfo(final Object instance) {
+    	
+    	// The simplest case where the implementation class was listed under the
+    	// classes attribute of <implementation.osgi/>, or this is the second call
+    	// to this method for the implementation class.
+        // Allow privileged access to get classloader. Requires getClassLoader in security policy.
+        JavaImplementation javaImpl = AccessController.doPrivileged(new PrivilegedAction<JavaImplementation>() {
+            public JavaImplementation run() {
+                return javaAnnotationInfo.get(instance.getClass());
+            }
+        });
+        if (javaImpl != null)
+            return javaImpl;
+    	
+        // Process annotations from the instance class.
+        try {
+            return processAnnotations(instance.getClass());
+        } catch (IntrospectionException e) {
+            // e.printStackTrace();
+        }
+        
+        return null;
+    }
+    
+
+    private JavaImplementation processAnnotations(Class<?> clazz)
+            throws IntrospectionException {
+
+        JavaImplementation javaImpl = javaImplementationFactory.createJavaImplementation(clazz);
+
+        javaAnnotationInfo.put(clazz, javaImpl);
+
+        OSGiPropertyInjector propertyInjector = new OSGiPropertyInjector(
+                javaImpl, runtimeComponent, propertyValueFactory, proxyFactory, requestContextFactory);
+
+        propertyInjectors.put(javaImpl, propertyInjector);
+
+        if (javaImpl.isEagerInit())
+            isEagerInit = true;
+        if (javaImpl.getMaxAge() != -1)
+            maxAge = javaImpl.getMaxAge();
+        if (javaImpl.getMaxIdleTime() != -1)
+            maxIdleTime = javaImpl.getMaxIdleTime();
+        if (javaImpl.getJavaScope() != JavaScopeImpl.COMPOSITE)
+            scope = new Scope(javaImpl.getJavaScope().getScope());
+        
+        return javaImpl;
+    }
+        
+    
+    
+    
+    private JavaImplementationFactory  createJavaImplementationFactory(AssemblyFactory assemblyFactory) {
+        JavaImplementationFactory javaImplementationFactory = new DefaultJavaImplementationFactory();
+        
+        // Create the list of class visitors
+        BaseJavaClassVisitor[] extensions =
+            new BaseJavaClassVisitor[] {
+                                        new ConstructorProcessor(assemblyFactory),
+                                        new AllowsPassByReferenceProcessor(assemblyFactory),
+                                        new ComponentNameProcessor(assemblyFactory),
+                                        new ContextProcessor(assemblyFactory),
+                                        new ConversationProcessor(assemblyFactory),
+                                        new DestroyProcessor(assemblyFactory),
+                                        new EagerInitProcessor(assemblyFactory),
+                                        new InitProcessor(assemblyFactory),
+                                        new PropertyProcessor(assemblyFactory),
+                                        new ReferenceProcessor(assemblyFactory, javaInterfaceFactory),
+                                        new ResourceProcessor(assemblyFactory),
+                                        new OSGiScopeProcessor(assemblyFactory),
+                                        new ServiceProcessor(assemblyFactory, javaInterfaceFactory),
+                                        new HeuristicPojoProcessor(assemblyFactory, javaInterfaceFactory),
+                                        new PolicyProcessor(assemblyFactory, policyFactory)};
+        for (JavaClassVisitor extension : extensions) {
+            javaImplementationFactory.addClassVisitor(extension);
+        }
+        
+        return javaImplementationFactory;
+    }
+    
+    private class OSGiScopeProcessor extends BaseJavaClassVisitor {
+        
+        public OSGiScopeProcessor(AssemblyFactory factory) {
+            super(factory);
+        }
+
+        @Override
+        public <T> void visitClass(Class<T> clazz,
+                                   JavaImplementation type)
+            throws IntrospectionException {
+            org.oasisopen.sca.annotation.Scope annotation = clazz.getAnnotation(org.oasisopen.sca.annotation.Scope.class);
+            if (annotation == null) {
+                type.setJavaScope(JavaScopeImpl.COMPOSITE);
+                return;
+            }
+            String name = annotation.value();
+            JavaScopeImpl scope;
+            if ("COMPOSITE".equals(name)) {
+                scope = JavaScopeImpl.COMPOSITE;
+            } else if ("SESSION".equals(name)) {
+                scope = JavaScopeImpl.SESSION;
+            } else if ("CONVERSATION".equals(name)) {
+                scope = JavaScopeImpl.CONVERSATION;
+            } else if ("REQUEST".equals(name)) {
+                scope = JavaScopeImpl.REQUEST;
+            } else {
+                scope = new JavaScopeImpl(name);
+            }
+            type.setJavaScope(scope);
+        }
+    }
+
+    
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyInjector.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyInjector.java
new file mode 100644
index 0000000000..8eee337638
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyInjector.java
@@ -0,0 +1,293 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi.context;
+
+
+import java.lang.annotation.ElementType;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Hashtable;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.context.RequestContextFactory;
+import org.apache.tuscany.sca.core.context.RequestContextImpl;
+import org.apache.tuscany.sca.core.factory.ObjectCreationException;
+import org.apache.tuscany.sca.core.factory.ObjectFactory;
+import org.apache.tuscany.sca.core.invocation.CallbackWireObjectFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.implementation.java.IntrospectionException;
+import org.apache.tuscany.sca.implementation.java.JavaImplementation;
+import org.apache.tuscany.sca.implementation.java.impl.JavaElementImpl;
+import org.apache.tuscany.sca.implementation.java.impl.JavaResourceImpl;
+import org.apache.tuscany.sca.implementation.java.injection.ArrayMultiplicityObjectFactory;
+import org.apache.tuscany.sca.implementation.java.injection.ConversationIDObjectFactory;
+import org.apache.tuscany.sca.implementation.java.injection.FieldInjector;
+import org.apache.tuscany.sca.implementation.java.injection.Injector;
+import org.apache.tuscany.sca.implementation.java.injection.InvalidAccessorException;
+import org.apache.tuscany.sca.implementation.java.injection.JavaPropertyValueObjectFactory;
+import org.apache.tuscany.sca.implementation.java.injection.ListMultiplicityObjectFactory;
+import org.apache.tuscany.sca.implementation.java.injection.MethodInjector;
+import org.apache.tuscany.sca.implementation.java.injection.ResourceObjectFactory;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.JavaIntrospectionHelper;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.oasisopen.sca.ComponentContext;
+import org.oasisopen.sca.RequestContext;
+import org.oasisopen.sca.annotation.ConversationID;
+
+
+/**
+ * OSGi property injection support
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiPropertyInjector {
+    
+    
+    private ArrayList<JavaElementImpl> injectionSites = new ArrayList<JavaElementImpl>();
+    private Hashtable<JavaElementImpl, ObjectFactory> factories = 
+        new Hashtable<JavaElementImpl, ObjectFactory>();
+    
+    private Injector[] injectors;
+    
+    public OSGiPropertyInjector(
+            JavaImplementation javaImpl,
+            RuntimeComponent component,
+            JavaPropertyValueObjectFactory propertyValueFactory,
+            ProxyFactory proxyFactory,
+            RequestContextFactory requestContextFactory) throws IntrospectionException {
+          
+        createInjectionSites(javaImpl, component, propertyValueFactory, proxyFactory, requestContextFactory);
+           
+        injectors = createInjectors();
+      
+    }
+
+    
+    @SuppressWarnings("unchecked")
+    public void injectProperties(Object instance) {
+        
+        for (Injector injector : injectors) {
+            injector.inject(instance);
+        }            
+
+    }
+    
+  
+    @SuppressWarnings("unchecked")
+    private void createInjectionSites(
+            JavaImplementation javaImpl,
+            RuntimeComponent component,
+            JavaPropertyValueObjectFactory propertyValueFactory,
+            ProxyFactory proxyFactory,
+            RequestContextFactory requestContextFactory) 
+    {
+
+        List<ComponentProperty> componentProperties = component.getProperties();
+        Map<String, JavaElementImpl> propertyMembers = javaImpl.getPropertyMembers();
+        
+        for (ComponentProperty prop : componentProperties) {
+            JavaElementImpl element = propertyMembers.get(prop.getName());
+            
+            if (element != null && !(element.getAnchor() instanceof Constructor) && prop.getValue() != null) {
+                Class propertyJavaType = JavaIntrospectionHelper.getBaseType(element.getType(), element.getGenericType());
+                ObjectFactory objFactory = propertyValueFactory.createValueFactory(prop, prop.getValue(), propertyJavaType);
+                    
+                factories.put(element, objFactory);
+                injectionSites.add(element);
+            }  
+        }
+        
+        for (Member member : javaImpl.getConversationIDMembers()) {
+            ObjectFactory<String> factory = new ConversationIDObjectFactory();
+            if (member instanceof Field) {
+                JavaElementImpl element = new JavaElementImpl((Field) member);
+                element.setClassifer(ConversationID.class);
+                injectionSites.add(element);
+                factories.put(element, factory);
+            } else if (member instanceof Method) {
+                JavaElementImpl element = new JavaElementImpl((Method) member, 0);
+                element.setName(JavaIntrospectionHelper.toPropertyName(member.getName()));
+                element.setClassifer(ConversationID.class);
+                injectionSites.add(element);
+                factories.put(element, factory);
+            } else {
+                throw new InvalidAccessorException(
+                        "Member must be a field or method: " + member.getName());
+            }
+
+        }
+        
+        if (!javaImpl.getCallbackMembers().isEmpty()) {
+            Map<String, List<RuntimeWire>> callbackWires = new HashMap<String, List<RuntimeWire>>();
+            for (ComponentService service : component.getServices()) {
+
+                RuntimeComponentReference callbackReference = (RuntimeComponentReference)service.getCallbackReference();
+                if (callbackReference != null) {
+                    List<RuntimeWire> wires = callbackReference.getRuntimeWires();
+                    if (!wires.isEmpty()) {
+                        callbackWires.put(wires.get(0).getSource().getInterfaceContract().getInterface().toString(), wires);
+                    }
+                }
+            }
+
+            for (Map.Entry<String, Collection<JavaElementImpl>> entry : javaImpl.getCallbackMembers()
+                .entrySet()) {
+                List<RuntimeWire> wires = callbackWires.get(entry.getKey());
+                if (wires == null) {
+                    // this can happen when there are no client wires to a
+                    // component that has a callback
+                    continue;
+                }
+                for(JavaElementImpl element : entry.getValue()) {
+                    ObjectFactory<?> factory = new CallbackWireObjectFactory(element.getType(), proxyFactory, wires);
+                    if (!(element.getAnchor() instanceof Constructor)) {
+                        injectionSites.add(element);
+                    }
+                    factories.put(element, factory);
+                }
+            }
+        }
+        
+        for (JavaResourceImpl resource : javaImpl.getResources().values()) {
+            
+            ObjectFactory<?> objectFactory;
+            Class<?> type = resource.getElement().getType();
+            if (ComponentContext.class.equals(type)) {
+                objectFactory = new ComponentContextFactory(component);
+                
+            } else if (RequestContext.class.equals(type)) {
+                objectFactory = new RequestContextObjectFactory(requestContextFactory, proxyFactory);
+               
+            } else {
+                boolean optional = resource.isOptional();
+                String mappedName = resource.getMappedName();
+                objectFactory = new ResourceObjectFactory(type, mappedName, optional, null);
+            }
+            factories.put(resource.getElement(), objectFactory);
+            if (!(resource.getElement().getAnchor() instanceof Constructor)) {
+                injectionSites.add(resource.getElement());
+            }
+        }
+        
+        
+    }
+    
+
+    @SuppressWarnings("unchecked")
+    private Injector[] createInjectors() {
+        
+        Injector[] injectors = (Injector[])new Injector[injectionSites.size()];
+
+        int i = 0;
+        for (JavaElementImpl element : injectionSites) {
+            Object obj = factories.get(element);
+            if (obj != null) {
+                if (obj instanceof ObjectFactory) {
+                    ObjectFactory<?> factory = (ObjectFactory<?>)obj;
+                    Member member = (Member)element.getAnchor();
+                    if (element.getElementType() == ElementType.FIELD) {
+                        injectors[i++] = new FieldInjector((Field)member, factory);
+                    } else if (element.getElementType() == ElementType.PARAMETER && member instanceof Method) {
+                        injectors[i++] = new MethodInjector((Method)member, factory);
+                    } else if (member instanceof Constructor) {
+                        // Ignore
+                    } else {
+                        throw new AssertionError(String.valueOf(element));
+                    }
+                } else {
+                    injectors[i++] = createMultiplicityInjector(element, (List<ObjectFactory<?>>)obj);
+                }
+            }
+        }
+        return injectors;
+    }
+    
+    @SuppressWarnings("unchecked")
+    protected Injector createMultiplicityInjector(JavaElementImpl element, List<ObjectFactory<?>> factories) {
+        Class<?> interfaceType = JavaIntrospectionHelper.getBaseType(element.getType(), element.getGenericType());
+
+        if (element.getAnchor() instanceof Field) {
+            Field field = (Field)element.getAnchor();
+            if (field.getType().isArray()) {
+                return new FieldInjector(field, new ArrayMultiplicityObjectFactory(interfaceType, factories));
+            } else {
+                return new FieldInjector(field, new ListMultiplicityObjectFactory(factories));
+            }
+        } else if (element.getAnchor() instanceof Method) {
+            Method method = (Method)element.getAnchor();
+            if (method.getParameterTypes()[0].isArray()) {
+                return new MethodInjector(method, new ArrayMultiplicityObjectFactory(interfaceType, factories));
+            } else {
+                return new MethodInjector(method, new ListMultiplicityObjectFactory(factories));
+            }
+        } else {
+            throw new InvalidAccessorException("Member must be a field or method: " + element.getName());
+        }
+    }
+
+    private static class ComponentContextFactory implements ObjectFactory {
+        
+        RuntimeComponent component;
+        
+        private ComponentContextFactory(RuntimeComponent component) {
+            this.component = component;
+        }
+
+        public Object getInstance() throws ObjectCreationException {
+            return component.getComponentContext();
+        }
+        
+    }
+    
+
+    private static class RequestContextObjectFactory implements ObjectFactory {
+        
+        private RequestContextFactory factory;
+        private ProxyFactory proxyFactory;
+
+        public RequestContextObjectFactory(RequestContextFactory factory) {
+            this(factory, null);
+        }
+
+        public RequestContextObjectFactory(RequestContextFactory factory, ProxyFactory proxyFactory) {
+            this.factory = factory;
+            this.proxyFactory = proxyFactory;
+        }
+
+        public RequestContext getInstance() throws ObjectCreationException {
+            if (factory != null) {
+                return factory.createRequestContext();
+            } else {
+                return new RequestContextImpl(proxyFactory);
+            }
+        }
+        
+    }
+    
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyValueObjectFactory.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyValueObjectFactory.java
new file mode 100644
index 0000000000..38befa611b
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyValueObjectFactory.java
@@ -0,0 +1,226 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi.context;
+
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.StringTokenizer;
+
+import org.apache.tuscany.sca.assembly.Property;
+import org.apache.tuscany.sca.core.factory.ObjectCreationException;
+import org.apache.tuscany.sca.core.factory.ObjectFactory;
+import org.apache.tuscany.sca.databinding.Mediator;
+import org.apache.tuscany.sca.databinding.SimpleTypeMapper;
+import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl;
+import org.apache.tuscany.sca.databinding.xml.DOMDataBinding;
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
+import org.apache.tuscany.sca.interfacedef.util.TypeInfo;
+import org.apache.tuscany.sca.interfacedef.util.XMLType;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+
+/**
+ * 
+ * Process properties and create property values.
+ * 
+ * This code has been copied from the Java implementation to avoid dependencies on the Java implementation.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiPropertyValueObjectFactory {
+    protected SimpleTypeMapper simpleTypeMapper = new SimpleTypeMapperImpl();
+    boolean isSimpleType;
+    
+    
+    public OSGiPropertyValueObjectFactory() {
+    }
+    
+    public OSGiPropertyValueObjectFactory(Mediator mediator) {
+    }
+    
+    public ObjectFactory createValueFactory(Property property, Object propertyValue) {
+        
+        Class javaType = SimpleTypeMapperImpl.getJavaType(property.getXSDType());
+        isSimpleType = isSimpleType(property);
+        Document doc = (Document)propertyValue;
+        Element rootElement = doc.getDocumentElement();
+        if (property.isMany()) {
+            if (isSimpleType) {
+                String value = "";
+                if (rootElement.getChildNodes().getLength() > 0) {
+                    value = rootElement.getChildNodes().item(0).getTextContent();
+                }
+                List<String> values = 
+                    getSimplePropertyValues(value, javaType);
+                return new ListObjectFactoryImpl(property, 
+                                                 values,
+                                                 isSimpleType,
+                                                 javaType);
+            } else {
+                return new ListObjectFactoryImpl(property,
+                                                 getComplexPropertyValues(doc),
+                                                 isSimpleType,
+                                                 javaType);
+            }
+        } else {
+            if (isSimpleType) {
+                String value = "";
+                if (rootElement.getChildNodes().getLength() > 0) {
+                    value = rootElement.getChildNodes().item(0).getTextContent();
+                }
+                return new ObjectFactoryImpl(property,
+                                             value,
+                                             isSimpleType,
+                                             javaType);
+            } else {
+                Object value = getComplexPropertyValues(doc).get(0);
+                return new ObjectFactoryImpl(property,
+                                             value,
+                                             isSimpleType,
+                                             javaType);
+            }
+            
+        }
+    }
+    
+    private boolean isSimpleType(Property property) {
+        if (property.getXSDType() != null) {
+            return SimpleTypeMapperImpl.isSimpleXSDType(property.getXSDType());
+        } else {
+            if (property instanceof Document) {
+                Document doc = (Document)property;
+                Element element = doc.getDocumentElement(); 
+                if (element.getChildNodes().getLength() == 1 && 
+                    element.getChildNodes().item(0).getNodeType() == Node.TEXT_NODE) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+    
+    private List<String> getSimplePropertyValues(String concatenatedValue, Class javaType) {
+        List<String> propValues = new ArrayList<String>();
+        StringTokenizer st = null;
+        if ( javaType.getName().equals("java.lang.String")) {
+            st = new StringTokenizer(concatenatedValue, "\"");
+        } else {
+            st = new StringTokenizer(concatenatedValue);
+        }
+        String aToken = null;
+        while (st.hasMoreTokens()) {
+            aToken = st.nextToken();
+            if (aToken.trim().length() > 0) {
+                propValues.add(aToken);
+            }
+        }
+        return propValues;
+    }
+    
+    private List<Node> getComplexPropertyValues(Document document) {
+        Element rootElement = document.getDocumentElement();
+        List<Node> propValues = new ArrayList<Node>();
+        for (int count = 0 ; count < rootElement.getChildNodes().getLength() ; ++count) {
+            if (rootElement.getChildNodes().item(count).getNodeType() == Node.ELEMENT_NODE) {
+                propValues.add(rootElement.getChildNodes().item(count));
+            }
+        }
+        return propValues;
+    }
+    
+    public abstract class ObjectFactoryImplBase  implements ObjectFactory {
+        protected SimpleTypeMapper simpleTypeMapper = new SimpleTypeMapperImpl();
+        protected Property property;
+        protected Object propertyValue;
+        protected Class javaType;
+        protected DataType<XMLType> sourceDataType;
+        protected DataType<?> targetDataType;
+        boolean isSimpleType;
+
+        public ObjectFactoryImplBase(Property property, Object propertyValue, boolean isSimpleType, Class javaType)  {
+            this.isSimpleType = isSimpleType;
+            this.property = property;
+            this.propertyValue = propertyValue;
+            this.javaType = javaType;
+            sourceDataType =
+                new DataTypeImpl<XMLType>(DOMDataBinding.NAME, Node.class, 
+                    new XMLType(null, this.property.getXSDType()));
+            TypeInfo typeInfo = null;
+            if (this.property.getXSDType() != null) {
+                if (SimpleTypeMapperImpl.isSimpleXSDType(this.property.getXSDType())) {
+                    typeInfo = new TypeInfo(property.getXSDType(), true, null);
+                } else {
+                    typeInfo = new TypeInfo(property.getXSDType(), false, null);
+                }
+            } else {
+                typeInfo = new TypeInfo(property.getXSDType(), false, null);
+            }
+
+            XMLType xmlType = new XMLType(typeInfo);
+            String dataBinding = null; //(String)property.getExtensions().get(DataBinding.class.getName());
+            if (dataBinding != null) {
+                targetDataType = new DataTypeImpl<XMLType>(dataBinding, javaType, xmlType);
+            } else {
+                targetDataType = new DataTypeImpl<XMLType>(dataBinding, javaType, xmlType);
+            }
+        }
+    }
+    
+    public class ObjectFactoryImpl extends ObjectFactoryImplBase {
+        public ObjectFactoryImpl(Property property, Object propertyValue, boolean isSimpleType, Class javaType) {
+            super(property, propertyValue, isSimpleType, javaType);
+        }
+
+        @SuppressWarnings("unchecked")
+        public Object getInstance() throws ObjectCreationException {
+            if (isSimpleType) {
+                return simpleTypeMapper.toJavaObject(property.getXSDType(), (String)propertyValue, null);
+            } else {
+                return null;
+            }
+        }
+    }
+
+    public class ListObjectFactoryImpl extends ObjectFactoryImplBase  {
+        public ListObjectFactoryImpl(Property property, List<?>propertyValues, boolean isSimpleType, Class javaType) {
+            super(property, propertyValues, isSimpleType, javaType);
+        }
+
+        @SuppressWarnings("unchecked")
+        public List<?> getInstance() throws ObjectCreationException {
+            if (isSimpleType) {
+                List<Object> values = new ArrayList<Object>();
+                for (String aValue : (List<String>)propertyValue) {
+                    values.add(simpleTypeMapper.toJavaObject(property.getXSDType(), aValue, null));
+                }
+                return values;
+            } else {
+                List instances = new ArrayList();
+                for (Node aValue : (List<Node>)propertyValue) {
+                    instances.add(aValue);
+                }
+                return instances;
+            }
+        }
+    }
+}
+      
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/impl/OSGiImplementationImpl.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/impl/OSGiImplementationImpl.java
new file mode 100644
index 0000000000..fe3efd22cd
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/impl/OSGiImplementationImpl.java
@@ -0,0 +1,168 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi.impl;
+
+
+import java.util.Hashtable;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.impl.ImplementationImpl;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.implementation.osgi.OSGiImplementation;
+
+
+/**
+ * OSGi implementation 
+ *    All attributes from <implementation.osgi> have getters in this class
+ * This class implements OSGiImplementationInterface which is associated with OSGiImplementationProvider.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiImplementationImpl extends ImplementationImpl implements OSGiImplementation {
+    
+    private String bundleSymbolicName;
+    private String bundleVersion;
+    
+    private String[] imports;
+    private Hashtable<String, List<ComponentProperty>> referenceProperties;
+    private Hashtable<String, List<ComponentProperty>> serviceProperties;
+
+    private Hashtable<String, List<ComponentProperty>> referenceCallbackProperties;
+    private Hashtable<String, List<ComponentProperty>> serviceCallbackProperties;
+    
+    private String[] classList;
+    
+    private ModelFactoryExtensionPoint modelFactories;
+    
+    private Object osgiBundle;
+    
+    public OSGiImplementationImpl(
+            ModelFactoryExtensionPoint modelFactories,
+            String bundleSymbolicName,
+            String bundleVersion,
+            String[] imports,
+            String[] classList,
+            Hashtable<String, List<ComponentProperty>> refProperties,
+            Hashtable<String, List<ComponentProperty>> serviceProperties) {
+        
+        super();
+        this.bundleSymbolicName = bundleSymbolicName;
+        this.bundleVersion = bundleVersion;
+        this.imports = imports;
+        this.referenceProperties = refProperties;
+        this.serviceProperties = serviceProperties;
+        this.classList = classList;
+        this.modelFactories = modelFactories;
+    }
+
+    public void setCallbackProperties(Hashtable<String, List<ComponentProperty>> refCallbackProperties, 
+            Hashtable<String, List<ComponentProperty>> serviceCallbackProperties) {
+        
+        this.referenceCallbackProperties = refCallbackProperties;
+        this.serviceCallbackProperties = serviceCallbackProperties;
+        
+    }
+    
+   
+    public String getBundleSymbolicName() {
+        return bundleSymbolicName;
+    }
+
+    public String getBundleVersion() {
+        return bundleVersion;
+    }
+
+    public String[] getImports() {
+        return imports;
+    }
+    
+    public String[] getClassList() {
+        return classList;
+    }
+    
+    public ModelFactoryExtensionPoint getModelFactories() {
+        return modelFactories;
+    }
+    
+    public List<ComponentProperty> getReferenceProperties(String referenceName) {
+        return referenceProperties.get(referenceName);
+    }
+    
+    public List<ComponentProperty> getServiceProperties(String serviceName) {
+        return serviceProperties.get(serviceName);
+    }
+    
+    public List<ComponentProperty> getReferenceCallbackProperties(String referenceName) {
+        return referenceCallbackProperties.get(referenceName);
+    }
+    
+    public List<ComponentProperty> getServiceCallbackProperties(String serviceName) {
+        return serviceCallbackProperties.get(serviceName);
+    }
+
+    /**
+     * Since OSGi implementation annotations may not be processed until much later, leave it to
+     * the OSGi invoker to decide whether pass-by-reference is allowed.
+     * @return
+     */
+    public boolean isAllowsPassByReference() {
+        return true;
+    }
+    
+    public Object getOSGiBundle() {
+        return osgiBundle;
+    }
+
+    public void setOSGiBundle(Object osgiBundle) {
+        this.osgiBundle = osgiBundle;
+    }
+
+    private boolean areEqual(Object obj1, Object obj2) {
+        if (obj1 == obj2)
+            return true;
+        if (obj1 == null || obj2 == null)
+            return false;
+        return obj1.equals(obj2);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        
+        if (!(obj instanceof OSGiImplementationImpl))
+            return super.equals(obj);
+        OSGiImplementationImpl impl = (OSGiImplementationImpl)obj;
+        if (!areEqual(bundleSymbolicName, impl.bundleSymbolicName))
+            return false;
+        if (!areEqual(bundleVersion, impl.bundleVersion))
+            return false;
+        if (!areEqual(serviceProperties, impl.serviceProperties))
+            return false;
+        if (!areEqual(serviceCallbackProperties, impl.serviceCallbackProperties))
+            return false;
+        if (!areEqual(referenceProperties, impl.referenceProperties))            
+            return false;
+        if (!areEqual(referenceCallbackProperties, impl.referenceCallbackProperties))            
+                return false;
+        return super.equals(obj);
+    }
+    
+
+    
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProvider.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProvider.java
new file mode 100644
index 0000000000..5664c77618
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProvider.java
@@ -0,0 +1,1254 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi.runtime;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.lang.reflect.Method;
+import java.security.AccessController;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
+import java.util.ArrayList;
+import java.util.Dictionary;
+import java.util.HashSet;
+import java.util.Hashtable;
+import java.util.List;
+import java.util.StringTokenizer;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.jar.JarOutputStream;
+import java.util.jar.Manifest;
+import java.util.zip.ZipEntry;
+
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Multiplicity;
+import org.apache.tuscany.sca.assembly.Property;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.context.RequestContextFactory;
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.core.factory.ObjectCreationException;
+import org.apache.tuscany.sca.core.factory.ObjectFactory;
+import org.apache.tuscany.sca.core.invocation.JDKProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.scope.Scope;
+import org.apache.tuscany.sca.core.scope.ScopeContainer;
+import org.apache.tuscany.sca.core.scope.ScopeRegistry;
+import org.apache.tuscany.sca.core.scope.ScopedImplementationProvider;
+import org.apache.tuscany.sca.core.scope.ScopedRuntimeComponent;
+import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint;
+import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl;
+import org.apache.tuscany.sca.implementation.java.IntrospectionException;
+import org.apache.tuscany.sca.implementation.java.injection.JavaPropertyValueObjectFactory;
+import org.apache.tuscany.sca.implementation.osgi.OSGiImplementation;
+import org.apache.tuscany.sca.implementation.osgi.context.OSGiAnnotations;
+import org.apache.tuscany.sca.implementation.osgi.impl.OSGiImplementationImpl;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.osgi.runtime.OSGiRuntime;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.BundleEvent;
+import org.osgi.framework.BundleException;
+import org.osgi.framework.BundleListener;
+import org.osgi.framework.Constants;
+import org.osgi.framework.FrameworkEvent;
+import org.osgi.framework.FrameworkListener;
+import org.osgi.framework.InvalidSyntaxException;
+import org.osgi.framework.ServiceEvent;
+import org.osgi.framework.ServiceListener;
+import org.osgi.service.packageadmin.ExportedPackage;
+import org.osgi.service.packageadmin.PackageAdmin;
+
+/**
+ * The runtime instantiation of OSGi component implementations
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiImplementationProvider  implements ScopedImplementationProvider, 
+                                                    FrameworkListener,
+                                                    BundleListener {
+    
+    private static final String COMPONENT_SERVICE_NAME = "component.service.name";
+    
+    // Maximum milliseconds to wait for a method to complete
+    private static final long METHOD_TIMEOUT_MILLIS = 60000; 
+    // Maximum milliseconds to wait for services to be registered into OSGi service registry
+    private static final long SERVICE_TIMEOUT_MILLIS = 300000; 
+  
+    private OSGiImplementationImpl implementation;
+    private OSGiAnnotations osgiAnnotations;
+    private BundleContext bundleContext;
+    
+    private Hashtable<RuntimeWire, Reference> referenceWires = new Hashtable<RuntimeWire,Reference>();
+    private Hashtable<RuntimeWire, ComponentReference> componentReferenceWires 
+                       = new Hashtable<RuntimeWire,ComponentReference>();
+    private HashSet<RuntimeWire> resolvedWires = new HashSet<RuntimeWire>();   
+    private boolean wiresResolved;
+        
+    private AtomicInteger startBundleEntryCount = new AtomicInteger();     
+    private AtomicInteger processAnnotationsEntryCount = new AtomicInteger();
+    
+    private JavaPropertyValueObjectFactory propertyValueFactory;
+    
+
+    private Hashtable<String, Object> componentProperties = new Hashtable<String, Object>();
+    private RuntimeComponent runtimeComponent;
+    
+    private Bundle osgiBundle;
+    private ArrayList<Bundle> dependentBundles = new ArrayList<Bundle>();
+    private OSGiServiceListener osgiServiceListener;
+    private PackageAdmin packageAdmin;
+    
+    private OSGiRuntime osgiRuntime;
+    
+    private ScopeRegistry scopeRegistry;
+    private DataBindingExtensionPoint dataBindingRegistry;
+    
+    private boolean packagesRefreshed;
+    
+    private MessageFactory messageFactory;
+    private InterfaceContractMapper mapper;
+    
+
+    public OSGiImplementationProvider(RuntimeComponent definition,
+            OSGiImplementation impl,
+            DataBindingExtensionPoint dataBindingRegistry,
+            JavaPropertyValueObjectFactory propertyValueFactory,
+            ProxyFactory proxyFactory,
+            ScopeRegistry scopeRegistry,
+            RequestContextFactory requestContextFactory,
+            MessageFactory messageFactory,
+            InterfaceContractMapper mapper) throws BundleException {
+        
+        
+        this.implementation = (OSGiImplementationImpl)impl;
+        this.runtimeComponent = definition;
+        this.dataBindingRegistry = dataBindingRegistry;
+        this.propertyValueFactory = propertyValueFactory;
+        this.scopeRegistry = scopeRegistry;
+        this.messageFactory = messageFactory;
+        this.mapper = mapper;
+        
+        bundleContext = getBundleContext();
+        osgiBundle = (Bundle)implementation.getOSGiBundle();
+        bundleContext.addBundleListener(this);
+        osgiServiceListener = new OSGiServiceListener(osgiBundle);        
+        bundleContext.addServiceListener(osgiServiceListener);    
+        
+        // Install and start all dependent  bundles
+        String[] imports = implementation.getImports();
+        for (int i = 0; i < imports.length; i++) {
+            String location = imports[i].trim();
+            if (location.length() > 0) {
+                Bundle bundle = bundleContext.installBundle(location);
+                dependentBundles.add(bundle);
+            }                
+        }
+        
+
+        this.osgiAnnotations = new OSGiAnnotations(
+                implementation.getModelFactories(),
+                implementation.getClassList(),
+                runtimeComponent,
+                propertyValueFactory,
+                proxyFactory,
+                requestContextFactory,
+                osgiBundle,
+                dependentBundles);
+
+        
+        // PackageAdmin is used to resolve bundles 
+        org.osgi.framework.ServiceReference packageAdminReference = 
+            bundleContext.getServiceReference("org.osgi.service.packageadmin.PackageAdmin");
+        if (packageAdminReference != null) {
+            packageAdmin = (PackageAdmin) bundleContext.getService(packageAdminReference);
+            bundleContext.addFrameworkListener(this);
+        }
+        
+        
+    }
+    
+    protected RuntimeComponent getRuntimeComponent() {
+        return runtimeComponent;
+    }
+    
+    protected OSGiImplementationImpl getImplementation() {
+        return implementation;
+    }
+    
+    // Create a property table from the list of properties 
+    // The source properties are properties read from <property/> elements
+    // Create property values in the table of the appropriate class based 
+    // on the property type specified.
+    private void processProperties(List<?> props, Hashtable<String, Object> propsTable) {
+        
+        if (props != null) {
+            for (Object p : props) {
+             
+                Property prop = (Property)p;
+                Class javaType = SimpleTypeMapperImpl.getJavaType(prop.getXSDType());
+                ObjectFactory<?> objFactory = propertyValueFactory.createValueFactory(prop, prop.getValue(), javaType);
+                Object value = objFactory.getInstance();          
+
+                propsTable.put(prop.getName(), value);
+            }
+        }
+    }
+
+   
+    private BundleContext getBundleContext() throws BundleException {
+
+        try {
+            if (bundleContext == null) {
+                osgiRuntime = OSGiRuntime.getRuntime();
+                bundleContext = osgiRuntime .getBundleContext();       
+            }
+        } catch (BundleException e) {
+           throw e;
+        } catch (Exception e) {
+            throw new BundleException("Could not start OSGi runtime", e);
+        }
+        
+        
+        return bundleContext;
+    }
+    
+    
+    private String getOSGiFilter(Hashtable<String, Object> props) {
+        
+        String filter = "";
+        
+        if (props != null && props.size() > 0) {
+            int propCount = 0;
+            for (String propName : props.keySet()) {
+                if (propName.equals("service.pid"))
+                    continue;
+                filter = filter + "(" + propName + "=" + props.get(propName)  + ")";
+                propCount++;
+            }
+    
+            if (propCount > 1) filter = "(&" + filter + ")";
+        }
+        else
+            filter = null;
+        return filter;
+    }
+    
+    /*
+     * Return a matching service registered by the specified bundle.
+     * If <implementation.osgi /> has the attribute filter defined, return a service
+     * reference that matches the filter. Otherwise, return a service which has a component
+     * name equal to this component's name. If not found, return a service which no
+     * component name set.
+     * 
+     * Even though services registered by this bundle can be filtered using the
+     * service listener, we use this method to filter all service references so that 
+     * the service matching functionality of OSGi can be directly used.
+     */
+    private org.osgi.framework.ServiceReference getOSGiServiceReference( 
+            String scaServiceName,
+            String osgiServiceName, String filter) 
+        throws InvalidSyntaxException {
+        
+        String compServiceName = runtimeComponent.getName() + "/" + scaServiceName;
+        if (filter != null && filter.length() > 0) {
+           org.osgi.framework.ServiceReference[] references = 
+                   bundleContext.getServiceReferences(osgiServiceName, filter);
+           
+
+           org.osgi.framework.ServiceReference reference = null;
+           if (references != null) {
+                for (org.osgi.framework.ServiceReference ref : references) {
+                    if (ref.getBundle() != osgiBundle)
+                        continue;
+                    Object compName = ref.getProperty(COMPONENT_SERVICE_NAME);
+                    if (compName == null && reference == null)
+                        reference = ref;
+                    if (scaServiceName == null || compServiceName.equals(compName)) {
+                        reference = ref;
+                        break;
+                    }
+                }
+           }
+        
+           return reference;
+           
+        }
+        
+        filter = scaServiceName == null? null : 
+                                         "(" + COMPONENT_SERVICE_NAME + "="+ compServiceName + ")";
+        
+        org.osgi.framework.ServiceReference[] references = 
+            bundleContext.getServiceReferences(osgiServiceName, filter);
+        
+        if (references != null) {            
+            for (org.osgi.framework.ServiceReference ref : references) {
+                if (ref.getBundle() == osgiBundle) {
+                    return ref;
+               }
+             }
+        }
+        
+        references = bundleContext.getServiceReferences(osgiServiceName, null);
+        
+        org.osgi.framework.ServiceReference reference = null;
+        
+        if (references != null) {
+            for (org.osgi.framework.ServiceReference ref : references) {
+                
+                if (ref.getBundle() != osgiBundle)
+                    continue;
+                Object compName = ref.getProperty(COMPONENT_SERVICE_NAME);
+                if (compName == null && reference == null)
+                    reference = ref;
+                if (compServiceName.equals(compName)) {
+                    reference = ref;
+                    break;
+                }
+            }
+        }
+        
+        return reference;
+    }
+    
+    /**
+     * This method is used to avoid full synchronization of methods which should
+     * be executed only once. 
+     * 
+     * entryCount=0: The count is incremented, and this thread executes the method. Returns true.
+     * 
+     * entryCount=1: Another thread is already executing this method. 
+     *               Wait for the thread to complete if doWait is true. Returns false. 
+     * 
+     * entryCount=2: The method has already been executed. Returns false.
+     * 
+     * @param doWait     If true, and another method is executing this method
+     *                   wait for method execution to complete
+     * @param entryCount Atomic integer used to ensure that the method is
+     *                   executed only once
+     * @return true if this thread has exclusive access to execute this method
+     */
+    private boolean enterMethod(boolean doWait, AtomicInteger entryCount) {
+        
+        if (entryCount.compareAndSet(0, 1)) {
+            return true;
+        }
+        else {
+            if (doWait) {
+                synchronized (entryCount) {
+                    if (entryCount.get() != 2) {
+                        try {
+                            entryCount.wait(METHOD_TIMEOUT_MILLIS);
+                        } catch (InterruptedException e) {
+                        }
+                    }
+                }
+            }
+            return false;
+        }
+    }
+    
+    /**
+     * Called on method exit of methods which were entered after 
+     * enterMethod returned true. Increments entryCount, and wakes
+     * up threads waiting for the method to complete.
+     * 
+     * @param entryCount Atomic integer used for synchronization
+     */
+    private void exitMethod(AtomicInteger entryCount) {
+        entryCount.compareAndSet(1, 2);
+        synchronized (entryCount) {
+          entryCount.notifyAll();
+        }
+    }
+    
+    protected Bundle startBundle(boolean doWait) throws ObjectCreationException {
+
+        try {
+            
+            if (enterMethod(doWait, startBundleEntryCount)) {               
+                
+                configurePropertiesUsingConfigAdmin();
+                
+                resolveBundle();
+                
+                processAnnotations(true);
+                
+                
+                for (Bundle bundle : dependentBundles) {
+                    try {
+                        if (bundle.getState() != Bundle.ACTIVE && bundle.getState() != Bundle.STARTING) {
+                            bundle.start();
+                        }
+                    } catch (BundleException e) {
+                        if (bundle.getHeaders().get("Fragment-Host") == null)
+                            throw e;
+                    }
+                }
+                
+            }
+    
+            if (osgiBundle.getState() != Bundle.ACTIVE && osgiBundle.getState() != Bundle.STARTING) {
+        
+
+                    int retry = 0;
+                
+                    while (retry++ < 10) {
+                        try {
+                            AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
+                                public Object run() throws BundleException {
+                                    osgiBundle.start();
+                                   return null;
+                               }
+                            });
+                            break;
+                        // } catch ( BundleException e) {
+                        } catch ( PrivilegedActionException e) {
+                            // It is possible that the thread "Refresh Packages" is in the process of
+                            // changing the state of this bundle. 
+                            Thread.yield();
+                        
+                            if (retry == 10)
+                            throw e;
+                        }
+                    }
+                }     
+   
+        } catch (Exception e) {
+            throw new ObjectCreationException(e);
+        } finally {
+            exitMethod(startBundleEntryCount);
+        }
+        return osgiBundle;
+    }
+    
+    
+    // This method is called by OSGiInstanceWrapper.getInstance to obtain the OSGi service reference
+    // corresponding to the specified service. The properties used to filter the service should
+    // be chosen based on whether this is a normal service or a callback.
+    protected org.osgi.framework.ServiceReference getOSGiServiceReference(ComponentService service) 
+            throws ObjectCreationException {
+         
+        Hashtable<String, Object> props = new Hashtable<String, Object>();
+        if (!service.isCallback())
+            processProperties(implementation.getServiceProperties(service.getName()), props);
+        else
+            processProperties(implementation.getServiceCallbackProperties(service.getName()), props);
+        
+        String filter = getOSGiFilter(props);
+        Interface serviceInterface = service.getInterfaceContract().getInterface();
+        String scaServiceName = service.getName();
+            
+        return getOSGiServiceReference(serviceInterface, filter, scaServiceName);
+           
+    }
+    
+    protected org.osgi.framework.ServiceReference getOSGiServiceReference(
+            EndpointReference from, Interface callbackInterface) 
+            throws ObjectCreationException {
+        
+        RuntimeWire refWire = null;
+        String filter = null;
+        for (RuntimeWire wire : referenceWires.keySet()) {
+            if (wire.getSource() == from) {
+                refWire = wire;
+                break;
+            }
+        }
+        if (refWire != null) {
+            Hashtable<String, Object> props = new Hashtable<String, Object>();
+            ComponentReference scaRef = componentReferenceWires.get(refWire);
+            processProperties(implementation.getReferenceCallbackProperties(scaRef.getName()), props);
+            filter = getOSGiFilter(props);
+        }
+        
+        return getOSGiServiceReference(callbackInterface, filter, null);
+    }
+    
+    private org.osgi.framework.ServiceReference getOSGiServiceReference(Interface serviceInterface,
+            String filter, String scaServiceName)
+            throws ObjectCreationException {
+        
+        try {
+            
+            String serviceInterfaceName = null;
+
+            org.osgi.framework.ServiceReference osgiServiceReference = null;
+            
+            if (serviceInterface instanceof JavaInterface) {
+                serviceInterfaceName = ((JavaInterface)serviceInterface).getJavaClass().getName();
+                                  
+                if ((osgiServiceReference = getOSGiServiceReference( 
+                        scaServiceName,
+                        serviceInterfaceName, filter)) == null) {
+                    
+                    // The service listener for our bundle will notify us when the service is registered.
+                    synchronized (implementation) {                            
+                                                
+                        // When declarative services are used, the component is started asynchronously
+                        // So this thread has to wait for the service to be registered by the component
+                        // activate method
+                        // For regular bundle activators, bundle.start activates the bundle synchronously
+                        // and hence the service would probably have been started by the bundle activator
+                        long startTime = System.currentTimeMillis();
+                        while ((osgiServiceReference = getOSGiServiceReference( 
+                                scaServiceName,
+                                serviceInterfaceName, filter)) == null) {
+                                            
+                            // Wait for the bundle to register the service
+                            implementation.wait(100);
+                            if (System.currentTimeMillis() - startTime > SERVICE_TIMEOUT_MILLIS)
+                                break;
+                        }
+                    }   
+                    
+                }
+            }
+                
+            return osgiServiceReference;
+            
+        } catch (Exception e) {
+            throw new ObjectCreationException(e);
+        }
+    }
+    
+    
+    // Felix does not support bundle fragments. This is a temporary workaround.
+    protected Bundle installDummyBundleWithoutFragments(Class<?> interfaceClass)
+            throws Exception {
+
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+
+        String EOL = System.getProperty("line.separator");
+
+        String interfaceName = interfaceClass.getName();
+        String packageName = getPackageName(interfaceClass);
+        String bundleName = "dummy.sca." + packageName;
+
+        String manifestStr = "Manifest-Version: 1.0" + EOL
+                + "Bundle-ManifestVersion: 2" + EOL + "Bundle-Name: "
+                + bundleName + EOL + "Bundle-SymbolicName: " + bundleName + EOL
+                + "Bundle-Version: " + "1.0.0" + EOL
+                + "Bundle-Localization: plugin" + EOL;
+        
+        ArrayList<String> dummyClasses = new ArrayList<String>();
+
+        StringBuilder manifestBuf = new StringBuilder();
+        manifestBuf.append(manifestStr);
+        manifestBuf.append("Export-Package: " + packageName + EOL);
+        String exportedInterfaces = interfaceName;
+        Bundle existingBundle = getDummyHostBundle(packageName);
+        String existingClasses;
+        dummyClasses.add(interfaceClass.getName());
+        for (Class<?> clazz :  interfaceClass.getClasses()) {
+            dummyClasses.add(clazz.getName());
+        }
+        if (existingBundle != null && 
+                (existingClasses = (String)existingBundle.getHeaders().get("SCA-Dummy-Classes")) != null) {
+            exportedInterfaces = exportedInterfaces + " " +  existingClasses;
+            
+            StringTokenizer tokenizer = new StringTokenizer(existingClasses);
+            while (tokenizer.hasMoreTokens()) {
+                String className = tokenizer.nextToken();
+                if (!dummyClasses.contains(className))
+                    dummyClasses.add(className);
+            }
+        }
+
+        manifestBuf.append("SCA-Dummy-Classes: " + exportedInterfaces + EOL);
+
+        ByteArrayInputStream manifestStream = new ByteArrayInputStream(
+                manifestBuf.toString().getBytes());
+        Manifest manifest = new Manifest();
+        manifest.read(manifestStream);
+
+        JarOutputStream jarOut = new JarOutputStream(out, manifest);
+
+        for (int i = 0; i < dummyClasses.size(); i++) {
+
+            String className = dummyClasses.get(i);
+            
+            Class clazz = interfaceClass.getClassLoader().loadClass(className);
+            className = clazz.getName().replaceAll("\\.", "/") + ".class";
+            ZipEntry ze = new ZipEntry(className);
+            jarOut.putNextEntry(ze);
+            InputStream stream = clazz.getResourceAsStream(clazz.getSimpleName() + ".class");
+            
+            byte[] bytes = new byte[stream.available()];
+            stream.read(bytes);
+            jarOut.write(bytes);
+            stream.close();
+        }
+        
+        
+        jarOut.close();
+        out.close();
+        
+        if (existingBundle != null) {
+            existingBundle.stop();
+            existingBundle.uninstall();
+        }
+
+        ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+
+        Bundle bundle = bundleContext.installBundle("file://" + bundleName
+                + ".jar", in);
+
+        bundle.start();
+        
+        if (existingBundle != null && packageAdmin != null) {
+            refreshPackages();
+            
+        }
+
+        return bundle;
+
+    }
+    
+    private Bundle getDummyHostBundle(String packageName) {
+        
+        if (packageAdmin == null)
+            return null;
+        
+        ExportedPackage exp = packageAdmin.getExportedPackage(packageName);
+        if (exp == null)
+            return null;
+        else
+            return exp.getExportingBundle();
+    }
+    
+    private static String getPackageName(Class<?> cls) {
+        String name = cls.getName();
+        int index = name.lastIndexOf('.');
+        return index == -1 ? "" : name.substring(0, index);
+    }
+    
+    private Bundle installDummyBundle(Class<?> interfaceClass)
+            throws Exception {
+        
+
+        if (!osgiRuntime.supportsBundleFragments()) {
+            return installDummyBundleWithoutFragments(interfaceClass);
+        }
+        
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+                
+        String EOL = System.getProperty("line.separator");
+        ArrayList<Class<?>> dummyClasses = new ArrayList<Class<?>>();
+        
+        String interfaceName = interfaceClass.getName();
+        String packageName = getPackageName(interfaceClass);
+        String bundleName = "dummy.sca." + interfaceName;
+        
+        
+        String manifestStr = "Manifest-Version: 1.0" + EOL +
+                        "Bundle-ManifestVersion: 2" + EOL +
+                        "Bundle-Name: " + bundleName + EOL +
+                        "Bundle-SymbolicName: " + bundleName + EOL +
+                        "Bundle-Version: " + "1.0.0" + EOL +
+                        "Bundle-Localization: plugin" + EOL;
+        
+                        
+        StringBuilder manifestBuf = new StringBuilder();
+        manifestBuf.append(manifestStr);
+        manifestBuf.append("Export-Package: " + packageName + EOL);
+        Bundle dummyHost = getDummyHostBundle(packageName);
+        if (dummyHost != null)
+            manifestBuf.append("Fragment-Host: " + dummyHost.getSymbolicName() + EOL);
+       
+        ByteArrayInputStream manifestStream = new ByteArrayInputStream(manifestBuf.toString().getBytes());
+        Manifest manifest = new Manifest();
+        manifest.read(manifestStream);
+        
+        dummyClasses.add(interfaceClass);
+        for (Class<?> clazz :  interfaceClass.getClasses()) {
+            dummyClasses.add(clazz);
+        }
+        
+        JarOutputStream jarOut = new JarOutputStream(out, manifest);
+
+        for (int i = 0; i < dummyClasses.size(); i++) {
+            
+            Class<?> clazz = dummyClasses.get(i);
+            String className = clazz.getName();
+            className = clazz.getName().replaceAll("\\.", "/") + ".class";
+            ZipEntry ze = new ZipEntry(className);
+            jarOut.putNextEntry(ze);
+            InputStream stream = clazz.getResourceAsStream(clazz.getSimpleName() + ".class");
+            
+            byte[] bytes = new byte[stream.available()];
+            stream.read(bytes);
+            jarOut.write(bytes);
+            stream.close();
+        }
+        
+        jarOut.close();
+        out.close();
+        
+        
+        ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+        
+        
+        Bundle bundle = bundleContext.installBundle(
+                "file://" + bundleName + ".jar",
+                in);
+        
+        if (dummyHost == null)
+            bundle.start();
+        
+        return bundle;
+        
+    }
+    
+    
+    
+    public InstanceWrapper<?> createInstanceWrapper() throws ObjectCreationException {
+        
+        return new OSGiInstanceWrapper<Object>(this, osgiAnnotations, bundleContext);
+    }
+    
+   
+    
+    private  void resolveWireCreateDummyBundles(final Class interfaceClass) throws Exception {
+        
+        
+        try {
+                 
+            osgiBundle.loadClass(interfaceClass.getName());
+                            
+        } catch (ClassNotFoundException e) {
+                        
+            // The interface used by the proxy is not in the source bundle
+            // A dummy bundle needs to be installed to create the proxy
+            // Allow privileged access to file system. Requires FileSystem permission in security
+            // policy.
+            Bundle dummyBundle = AccessController.doPrivileged(new PrivilegedExceptionAction<Bundle>() {
+                public Bundle run() throws Exception {
+                    return installDummyBundle(interfaceClass);
+                }
+            });
+                                
+            if (packageAdmin != null) {
+                                    
+                packageAdmin.resolveBundles(new Bundle[]{dummyBundle, osgiBundle});
+                              
+            } 
+
+        }
+    }
+    
+    /**
+     * For OSGi->Java wires, create a proxy corresponding to the Java interfaces
+     * and register the proxy with the OSGi registry, so that the source OSGi bundle can 
+     * locate the target Java instance from the registry like a regular OSGi service.
+     * 
+     * For OSGi->OSGi wires, start the target OSGi bundle, so that references of the
+     * target are resolved before the source OSGi bundle is started. If the reference
+     * has properties specified, create a Proxy and register a service with highest
+     * possible ranking. The Proxy should wire to the correct OSGi instance specified
+     * in the SCA composite.
+     * 
+     * The first phase determines whether a proxy should be installed. It also registers
+     * a dummy bundle if necessary to resolve the bundle. When phase1 is completed on all
+     * wires of the component, the bundle should be resolved. Phase2 registers the proxy service.
+     */
+    private boolean resolveWireResolveReferences(Bundle bundle, Class interfaceClass, RuntimeWire wire,
+            boolean isOSGiToOSGiWire) throws Exception {
+        
+
+        // FIXME: At the moment injection of values into instances require an instance to be obtained
+        // through the instance wrapper, and hence requires a proxy. When we do this processing here,
+        // we don't yet know whether the target requires any property or callback injection. So it is
+        // safer to create a proxy all the time. 
+        boolean createProxy = true; 
+       
+        ComponentReference scaRef = componentReferenceWires.get(wire);
+        Hashtable<String, Object> targetProperties = new Hashtable<String, Object>();
+        processProperties(implementation.getReferenceProperties(scaRef.getName()), targetProperties);
+            
+
+        if (isOSGiToOSGiWire) {
+                    
+                OSGiImplementationProvider implProvider = (OSGiImplementationProvider)wire.getTarget().getComponent().getImplementationProvider();
+                    
+                // This is an OSGi->OSGi wire
+                isOSGiToOSGiWire = true;
+                    
+                // If the target component is stateless, use a proxy to create a new service each time 
+                if (!implProvider.getScope().equals(Scope.COMPOSITE)) createProxy = true;
+                
+                Interface interfaze = wire.getTarget().getInterfaceContract().getInterface();
+                
+                // If the target interface is remotable, create a proxy to support pass-by-value semantics
+                // AllowsPassByReference is not detected until the target instance is obtained.
+                if (interfaze.isRemotable())
+                    createProxy = true;
+                    
+                // If any of the operations in the target interface is non-blocking, create a proxy
+                List<Operation> ops = interfaze.getOperations();
+                for (Operation op : ops) {
+                    if (op.isNonBlocking())
+                        createProxy = true;
+                }
+                    
+                // If properties are specified for the reference, create a proxy since rewiring may be required
+                if (targetProperties.size() > 0) {
+                    createProxy = true;
+                }
+                
+                // If properties are specified for the component, create a proxy for configuring
+                // the component services.
+                if (componentProperties.size() > 0) {
+                    createProxy = true;
+                }
+                    
+                // Since this is an OSGi->OSGi wire, start the target bundle before starting the
+                // source bundle if there is no proxy. For direct wiring without a proxy, this ordering 
+                // is irrelevant in terms of class resolution, but the target needs to be started at some 
+                // point. But there is no opportunity later on to start the target OSGi bundle without a proxy.    
+                // When a Proxy is used, the target bundle needs to be resolved for the source bundle
+                // to be resolved so that the interface is visible to the source. In this case the bundle
+                // will be started when an instance is needed.                    
+                if (!createProxy) {    
+                    implProvider.startBundle(false);
+                }
+                else {
+                    implProvider.resolveBundle();
+                }
+        }
+        else {
+                createProxy = true;
+        }
+            
+        return createProxy;
+    }
+    
+    
+    // Register proxy service 
+    private void resolveWireRegisterProxyService(final Bundle bundle, final Class interfaceClass, RuntimeWire wire) throws Exception {
+          
+        ComponentReference scaRef = componentReferenceWires.get(wire);
+        Hashtable<String, Object> targetProperties = new Hashtable<String, Object>();
+        processProperties(implementation.getReferenceProperties(scaRef.getName()), targetProperties);
+        targetProperties.put(Constants.SERVICE_RANKING, Integer.MAX_VALUE);
+        
+        if (targetProperties.get(COMPONENT_SERVICE_NAME) == null && wire.getTarget().getComponent() != null) {
+            String compServiceName = wire.getTarget().getComponent().getName() + "/" + 
+                                     wire.getTarget().getContract().getName();
+            targetProperties.put(COMPONENT_SERVICE_NAME, compServiceName);
+        }
+        
+           
+        JDKProxyFactory proxyService = new JDKProxyFactory(messageFactory, mapper);
+
+        // Allow privileged access to load classes. Requires getClassLoader permission in security
+        // policy.
+        final Class<?> proxyInterface = AccessController.doPrivileged(new PrivilegedExceptionAction<Class<?>>() {
+            public Class<?> run() throws Exception {
+                return bundle.loadClass(interfaceClass.getName());
+            }
+        });
+
+        final Object proxy = proxyService.createProxy(proxyInterface, wire);
+        final Hashtable<String, Object> finalTargetProperties = targetProperties;
+        AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
+            public Object run() throws Exception {
+                bundleContext.registerService(proxyInterface.getName(), proxy, finalTargetProperties);
+                return null;
+            }
+        });
+            
+        
+    }
+    
+    
+    private void refreshPackages() {
+    
+        if (packageAdmin != null) {
+            synchronized (this) {
+                packagesRefreshed = false;
+                packageAdmin.refreshPackages(null);
+                        
+                if (!packagesRefreshed) {
+                	try {
+                        this.wait(2000);
+                	} catch (InterruptedException e) {
+                		// ignore
+                	}
+                }
+                packagesRefreshed = false;
+            }                       
+        }
+    }
+    
+    
+    private void resolveBundle() throws ObjectCreationException {
+        
+        
+        try {
+            
+            if (!wiresResolved) {
+                wiresResolved = true;
+                
+                if (!setReferencesAndProperties()) {
+                    wiresResolved = false;
+                    return;
+                }
+                    
+                int refPlusServices = referenceWires.size() + runtimeComponent.getServices().size();
+                boolean[] createProxyService = new boolean[refPlusServices];
+                Class<?>[] interfaceClasses = new Class<?>[refPlusServices] ;
+                boolean[] isOSGiToOSGiWire = new boolean[refPlusServices];
+                boolean[] wireResolved = new boolean[refPlusServices];
+                int index = 0;
+                for (RuntimeWire wire : referenceWires.keySet()) {
+                
+                    Reference reference = referenceWires.get(wire);
+                    
+                    isOSGiToOSGiWire[index] = wire.getTarget().getComponent() != null &&
+                            wire.getTarget().getComponent().getImplementationProvider() 
+                            instanceof OSGiImplementationProvider;
+                            
+                    Interface refInterface = reference.getInterfaceContract().getInterface();
+                    if (refInterface instanceof JavaInterface) {
+                        interfaceClasses[index] = ((JavaInterface)refInterface).getJavaClass();
+                    
+                        if (!isOSGiToOSGiWire[index])
+                            resolveWireCreateDummyBundles(interfaceClasses[index]);
+
+                    }
+                    
+                    if (!resolvedWires.contains(wire)) {
+                        resolvedWires.add(wire);                       
+                    }
+                    else
+                        wireResolved[index] = true;
+                    
+                    index++;
+                }
+                for (ComponentService service : runtimeComponent.getServices()) {
+                    Interface callbackInterface = service.getInterfaceContract().getCallbackInterface();
+                    if (callbackInterface instanceof JavaInterface) {
+                        interfaceClasses[index] = ((JavaInterface)callbackInterface).getJavaClass();
+                        
+                        resolveWireCreateDummyBundles(interfaceClasses[index]);
+                    }
+                    
+                    index++;
+                }
+                
+                index = 0;
+                for (RuntimeWire wire : referenceWires.keySet()) {
+                    
+                    if (!wireResolved[index]) {
+                        createProxyService[index] = resolveWireResolveReferences(osgiBundle, 
+                            interfaceClasses[index], 
+                            wire,
+                            isOSGiToOSGiWire[index]);
+                    }
+                    index++;
+                }
+
+                refreshPackages();
+                
+                
+                index = 0;
+                for (RuntimeWire wire : referenceWires.keySet()) {
+                    
+                    if (createProxyService[index] && !wireResolved[index])
+                        resolveWireRegisterProxyService(osgiBundle, interfaceClasses[index], wire);
+                    index++;
+                }
+            }
+            else if (osgiBundle.getState() == Bundle.INSTALLED && packageAdmin != null) {
+                packageAdmin.resolveBundles(new Bundle[] {osgiBundle});
+            }
+            
+        } catch (Exception e) {
+            e.printStackTrace();
+            throw new ObjectCreationException(e);
+        }         
+    }
+    
+   
+    @SuppressWarnings("unchecked")
+    private void configurePropertiesUsingConfigAdmin() {
+               
+        try {
+
+            if (componentProperties.size() == 0)
+                return;
+            
+            org.osgi.framework.ServiceReference configAdminReference = 
+                bundleContext.getServiceReference("org.osgi.service.cm.ConfigurationAdmin");
+            if (configAdminReference != null) {
+                
+                Object cm = bundleContext.getService(configAdminReference);
+                Class cmClass = cm.getClass().getClassLoader().loadClass("org.osgi.service.cm.ConfigurationAdmin");
+                Method getConfigMethod = cmClass.getMethod("getConfiguration", String.class, String.class);
+                
+
+                Class configClass = cm.getClass().getClassLoader().loadClass("org.osgi.service.cm.Configuration");
+                
+                Method getMethod = configClass.getMethod("getProperties");
+                Method updateMethod = configClass.getMethod("update", Dictionary.class);
+                
+                List<Service> services = implementation.getServices();
+                HashSet<String> pidsProcessed = new HashSet<String>();
+                
+                for (Service service : services) {
+                    
+                    List<ComponentProperty> serviceProps = implementation.getServiceProperties(service.getName());
+                    String pid = null;
+                    
+                    if (serviceProps != null) {
+                        for (ComponentProperty prop : serviceProps) {
+                            if (prop.getName().equals("service.pid")) {
+                                ObjectFactory objFactory = propertyValueFactory.createValueFactory(prop, 
+                                        prop.getValue(), String.class);
+                                pid = (String)objFactory.getInstance();
+                            }
+                        }
+                    }
+                    if (pid == null || pidsProcessed.contains(pid))
+                        continue;
+                    
+
+                   
+                    
+                    Object config = getConfigMethod.invoke(cm, pid, null);
+                    Dictionary props = (Dictionary) getMethod.invoke(config);
+                    if (props == null)
+                        props = new Hashtable<String, Object>();
+                    for (String propertyName : componentProperties.keySet()) {
+
+                        props.put(propertyName, componentProperties.get(propertyName));
+                    }
+                    
+                    updateMethod.invoke(config, props);
+                    
+                    
+                }                
+                
+            }
+            
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+    }
+    
+    
+    
+    public boolean isOptimizable() {
+        return false;
+    }
+    
+    public Scope getScope() {
+        return osgiAnnotations.getScope();
+    }
+
+    public boolean isEagerInit() {
+        return osgiAnnotations.isEagerInit();
+    }
+
+    public long getMaxAge() {
+        return osgiAnnotations.getMaxAge();
+    }
+
+    public long getMaxIdleTime() {
+        return osgiAnnotations.getMaxIdleTime();
+    }
+    
+    protected ScopeContainer<?> getScopeContainer() {
+        startBundle(true);
+        return ((ScopedRuntimeComponent)runtimeComponent).getScopeContainer();
+    }
+    
+    public Invoker createTargetInvoker(RuntimeComponentService service, Operation operation)  {
+       
+        
+        Interface serviceInterface = operation.getInterface();
+        boolean isRemotable = serviceInterface.isRemotable();
+
+
+        Invoker invoker = new OSGiTargetInvoker(operation, this, service);
+        if (isRemotable) {
+            return new OSGiRemotableInvoker(osgiAnnotations, dataBindingRegistry, operation, this, service);
+        } else {
+            return invoker;
+        }
+        
+    }
+    
+    
+    public Invoker createInvoker(RuntimeComponentService service, Operation operation) {
+        return createTargetInvoker(service, operation);
+    }
+    
+    public boolean supportsOneWayInvocation() {
+        return false;
+    }
+
+    private boolean setReferencesAndProperties() {
+       
+        for (Reference ref: implementation.getReferences()) {
+            List<RuntimeWire> wireList = null;
+            ComponentReference compRef = null;
+            for (ComponentReference cRef : runtimeComponent.getReferences()) {
+                if (cRef.getName().equals(ref.getName())) {
+                    
+                    wireList = ((RuntimeComponentReference)cRef).getRuntimeWires();
+                    
+                    compRef = cRef;
+                    break;
+                }
+            }
+                
+            if (ref.getMultiplicity() == Multiplicity.ONE_N || ref.getMultiplicity() == Multiplicity.ZERO_N) {
+                 for (RuntimeWire wire : wireList) {
+                    referenceWires.put(wire, ref);
+                    componentReferenceWires.put(wire, compRef);
+                }
+                
+            } else {
+                if (wireList == null && ref.getMultiplicity() == Multiplicity.ONE_ONE) {
+                    throw new IllegalStateException("Required reference is missing: " + ref.getName());
+                }
+                if (wireList != null && !wireList.isEmpty()) {
+                    RuntimeWire wire = wireList.get(0);
+                    referenceWires.put(wire, ref);
+                    componentReferenceWires.put(wire, compRef);
+                }
+                
+            }
+            
+        }
+        
+        processProperties(runtimeComponent.getProperties(), componentProperties);
+        
+        return true;
+        
+    }
+    
+    public void start() {
+        setReferencesAndProperties();
+    }
+        
+    public void processAnnotations(boolean doWait) throws IntrospectionException {
+        
+        if (!enterMethod(doWait, processAnnotationsEntryCount))
+            return;
+        
+        try {
+            osgiAnnotations.processAnnotations();
+        
+            Scope scope = osgiAnnotations.getScope();
+            if (scope.equals(Scope.SYSTEM) || scope.equals(Scope.COMPOSITE)) {
+                // Nothing
+            } else {
+
+                if (runtimeComponent instanceof ScopedRuntimeComponent) {
+
+                    ScopedRuntimeComponent component = (ScopedRuntimeComponent) runtimeComponent;
+
+                    ScopeContainer oldScopeContainer = component.getScopeContainer();
+                    component.setScopeContainer(null);
+                    ScopeContainer scopeContainer = scopeRegistry.getScopeContainer(runtimeComponent);
+
+                    if (oldScopeContainer != null && oldScopeContainer.getLifecycleState() == ScopeContainer.RUNNING) {
+                        scopeContainer.start();
+                    }
+                
+                    component.setScopeContainer(scopeContainer);
+                }
+
+            }
+        } finally {
+            exitMethod(processAnnotationsEntryCount);
+        }  
+    }
+    
+    public void stop() {
+
+        if (osgiServiceListener != null)
+            bundleContext.removeServiceListener(osgiServiceListener);
+    }
+
+    
+    
+    public void frameworkEvent(FrameworkEvent event) {
+        if (event.getType() == FrameworkEvent.PACKAGES_REFRESHED) {
+            synchronized (this) {
+                packagesRefreshed = true;
+                this.notifyAll();
+            }            
+        }
+        
+    }
+    
+    public void bundleChanged(BundleEvent event) {
+        if (event.getType() == BundleEvent.RESOLVED && event.getBundle() == osgiBundle) {
+            try {
+                processAnnotations(false);
+            } catch (Throwable e) {
+                e.printStackTrace();
+            }             
+        }
+    }
+
+    private class OSGiServiceListener implements ServiceListener {
+        
+        private Bundle bundle;
+        
+        OSGiServiceListener(Bundle bundle) {
+            this.bundle = bundle;
+        }
+        
+        public void serviceChanged(org.osgi.framework.ServiceEvent event) {
+            
+
+            org.osgi.framework.ServiceReference reference = event.getServiceReference();
+            
+            if (event.getType() == ServiceEvent.REGISTERED && reference.getBundle() == bundle) {
+                
+                synchronized (implementation) {
+                    
+                    implementation.notifyAll();
+                }
+            }
+            
+            if (event.getType() == ServiceEvent.UNREGISTERING && reference.getBundle() == bundle) {
+                // TODO: Process deregistering of OSGi services.
+            }
+        }
+    }
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProviderFactory.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProviderFactory.java
new file mode 100644
index 0000000000..814d37f203
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProviderFactory.java
@@ -0,0 +1,111 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi.runtime;
+
+
+import org.apache.tuscany.sca.context.ContextFactoryExtensionPoint;
+import org.apache.tuscany.sca.context.RequestContextFactory;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.core.invocation.ExtensibleProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
+import org.apache.tuscany.sca.core.scope.ScopeRegistry;
+import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint;
+import org.apache.tuscany.sca.databinding.TransformerExtensionPoint;
+import org.apache.tuscany.sca.databinding.impl.MediatorImpl;
+import org.apache.tuscany.sca.implementation.java.injection.JavaPropertyValueObjectFactory;
+import org.apache.tuscany.sca.implementation.osgi.OSGiImplementation;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.provider.ImplementationProvider;
+import org.apache.tuscany.sca.provider.ImplementationProviderFactory;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.osgi.framework.BundleException;
+
+
+/**
+ * Builds a OSGi-based implementation provider from a component definition
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiImplementationProviderFactory implements ImplementationProviderFactory<OSGiImplementation> {
+    
+    private DataBindingExtensionPoint dataBindings;
+    private JavaPropertyValueObjectFactory propertyFactory;
+    private ProxyFactory proxyFactory;
+    private ScopeRegistry scopeRegistry;
+    private MessageFactory messageFactory;
+    private InterfaceContractMapper mapper;
+    
+    private RequestContextFactory requestContextFactory;
+    
+    public OSGiImplementationProviderFactory(ExtensionPointRegistry extensionPoints ) {
+        
+        dataBindings = extensionPoints.getExtensionPoint(DataBindingExtensionPoint.class);
+        ProxyFactoryExtensionPoint proxyFactories = extensionPoints.getExtensionPoint(ProxyFactoryExtensionPoint.class);
+        proxyFactory = new ExtensibleProxyFactory(proxyFactories);
+        ContextFactoryExtensionPoint contextFactories = extensionPoints.getExtensionPoint(ContextFactoryExtensionPoint.class);
+        requestContextFactory = contextFactories.getFactory(RequestContextFactory.class);
+        
+
+        // FIXME: Scope registry is not an extension point, and this usage is specific
+        // to implementation.osgi since it needs to change scope after the component is
+        // created. Do we need to find a better way?
+        scopeRegistry = extensionPoints.getExtensionPoint(ScopeRegistry.class);
+        
+        TransformerExtensionPoint transformers = extensionPoints.getExtensionPoint(TransformerExtensionPoint.class);
+        MediatorImpl mediator = new MediatorImpl(dataBindings, transformers);
+        propertyFactory = new JavaPropertyValueObjectFactory(mediator);
+
+        ModelFactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(ModelFactoryExtensionPoint.class);
+        messageFactory = modelFactories.getFactory(MessageFactory.class);
+        
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        mapper = utilities.getUtility(InterfaceContractMapper.class);
+    }
+
+    public ImplementationProvider createImplementationProvider(RuntimeComponent component,
+        OSGiImplementation implementation) {
+                
+        try {
+                
+            return new OSGiImplementationProvider(component, 
+                    implementation, 
+                    dataBindings,
+                    propertyFactory,
+                    proxyFactory,
+                    scopeRegistry,
+                    requestContextFactory,
+                    messageFactory,
+                    mapper
+                    );
+                
+        } catch (BundleException e) {
+            throw new RuntimeException(e);
+        }
+        
+    }
+
+    public Class<OSGiImplementation> getModelType() {
+        return OSGiImplementation.class;
+    }
+
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiInstanceWrapper.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiInstanceWrapper.java
new file mode 100644
index 0000000000..a4fb1ec2ca
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiInstanceWrapper.java
@@ -0,0 +1,299 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi.runtime;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Method;
+import java.util.Hashtable;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Random;
+import java.util.jar.JarOutputStream;
+import java.util.jar.Manifest;
+
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.core.scope.Scope;
+import org.apache.tuscany.sca.core.scope.TargetDestructionException;
+import org.apache.tuscany.sca.core.scope.TargetInitializationException;
+import org.apache.tuscany.sca.implementation.osgi.context.OSGiAnnotations;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.BundleException;
+import org.osgi.framework.ServiceReference;
+import org.oasisopen.sca.annotation.Destroy;
+import org.oasisopen.sca.annotation.Init;
+
+
+/**
+ * InstanceWrapper for creating instances for OSGi components. 
+ * This class needs to implement InstanceWrapper since the wrapper is stored in
+ * the scope container. But getInstance() is called on this wrapper only through the
+ * OSGi target invoker. OSGiTargetInvoker always invokes getInstance for a specific
+ * service since one OSGi SCA component can associate different objects with 
+ * different services (this is different from Java SCA components which always associate 
+ * a single component instance with multiple services).
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiInstanceWrapper<T> implements InstanceWrapper<T> {
+    private static final Random RANDOM_NUMBER_GENERATOR = new Random();
+    
+    private OSGiAnnotations annotationProcessor;
+    private OSGiImplementationProvider provider;
+    private BundleContext bundleContext;
+    private Hashtable<Object,InstanceInfo<T>> instanceInfoList = 
+        new Hashtable<Object,InstanceInfo<T>>();
+    
+    // Dummy bundles are used to create a new service object for scopes other than COMPOSITE
+    private Bundle dummyReferenceBundle;
+
+
+    public OSGiInstanceWrapper(OSGiImplementationProvider provider, 
+            OSGiAnnotations annotationProcessor,
+            BundleContext bundleContext) {
+        
+        this.provider = provider;
+        this.annotationProcessor = annotationProcessor;
+        this.bundleContext = bundleContext;
+    }
+    
+    public synchronized T getInstance(ComponentService service) throws TargetInitializationException {
+        
+    	// If an instance corresponding to this service has already been created, return the instance.
+        if (instanceInfoList.get(service) != null)
+            return instanceInfoList.get(service).osgiInstance;
+        
+        // There is no strict relation between service and callback instances. The instance semantics
+        // actually applies to the component instance in SCA. But for OSGi services, the callback
+        // is just another OSGi service, and could correspond to any of the service instances in 
+        // the component. To implement the SCA scope semantics for callbacks, OSGi callbacks
+        // should also be made on the service object which implements the callback. The following code
+        // finds the first possible callback instance based on the interfaces implemented by the service 
+        // objects in this component. Note that the interfaces are checked by name rather than using
+        // instanceof since the class seen by Tuscany could be from a different classloader from that
+        // used by the bundle.
+        if (service.isCallback()) {
+        	Iterator<InstanceInfo<T>> instances = instanceInfoList.values().iterator();
+        	while (instances.hasNext()) {
+        		InstanceInfo<T> instanceInfo = instances.next();
+        		Interface interfaze = service.getInterfaceContract().getInterface();
+        		if (interfaze instanceof JavaInterface && ((JavaInterface)interfaze).getJavaClass() != null) {
+        			String interfaceName = ((JavaInterface)interfaze).getJavaClass().getName();
+        			Class[] interfaces = instanceInfo.osgiInstance.getClass().getInterfaces();
+        			for (Class clazz : interfaces) {
+        				if (clazz.getName().equals(interfaceName)) {
+                			return instanceInfo.osgiInstance;
+        				}
+        			}
+        			
+        		}
+        		    
+        	}
+        }
+
+        Bundle refBundle = provider.startBundle(true);
+        
+        // For scopes other than composite, the service object is obtained using a dummy reference
+        // bundle to guarantee that a new instance is created each time. This combined with the Tuscany
+        // scope container code guarantee SCA scope semantics for OSGi components as long as service
+        // factories are used.
+        if (!annotationProcessor.getScope().equals(Scope.COMPOSITE)) {
+            refBundle = getDummyReferenceBundle();
+        }
+        
+        InstanceInfo<T> instanceInfo = new InstanceInfo<T>();
+               
+        instanceInfo.refBundleContext = refBundle.getBundleContext();
+
+        instanceInfo.osgiInstance = getInstanceObject(instanceInfo, service);
+        
+        try {
+
+            if (!isInitialized(instanceInfo.osgiInstance)) {
+                
+                annotationProcessor.injectProperties(instanceInfo.osgiInstance);
+                callLifecycleMethod(instanceInfo.osgiInstance, Init.class);
+                
+                instanceInfo.isFirstInstance = true;
+            }
+
+            instanceInfoList.put(service, instanceInfo);
+
+        } catch (Exception e) {
+            throw new TargetInitializationException(e);
+        }
+        
+        return instanceInfo.osgiInstance;
+    }
+    
+    
+    
+    // This method is provided purely to implement InstanceWrapper interface, and is never called.
+    public T getInstance() {
+
+        return null;
+    }
+    
+    public void start() throws TargetInitializationException {
+
+        if (provider.isEagerInit()) {
+            List<ComponentService> services = provider.getRuntimeComponent().getServices();
+            for (ComponentService service : services) {
+                getInstance(service);
+            }
+        }
+    }
+
+    public synchronized void stop() throws TargetDestructionException {
+        
+        for (InstanceInfo<T> instanceInfo : instanceInfoList.values()) {
+            if (instanceInfo.osgiInstance != null && instanceInfo.osgiServiceReference != null) {            
+                
+                try {
+                    
+                    if (instanceInfo.isFirstInstance)
+                        callLifecycleMethod(instanceInfo.osgiInstance, Destroy.class);
+            
+                    instanceInfo.refBundleContext.ungetService(instanceInfo.osgiServiceReference);
+            
+                    instanceInfo.osgiInstance = null;
+                    instanceInfo.osgiServiceReference = null;
+            
+                } catch (Exception e) {
+                    throw new TargetDestructionException(e);
+                }            
+            }
+        }
+        instanceInfoList.clear();
+        if (dummyReferenceBundle != null) {
+            try {
+                dummyReferenceBundle.uninstall();
+            } catch (BundleException e) {
+                throw new TargetDestructionException(e);
+            }
+            dummyReferenceBundle = null;
+        }
+    }
+    
+    @SuppressWarnings("unchecked")
+    private T getInstanceObject(InstanceInfo<T> instanceInfo, ComponentService service) {
+
+    	/** 
+    	 * Since implementation.osgi is not well integrated with the OSGi lifecycle
+    	 * it is possible that the service is deactivated before the service instance
+    	 * is obtained when using declarative services. Retry in this case.  
+    	 */
+    	int maxRetries = 10;
+    	for (int i = 0; i < maxRetries; i++) {
+          instanceInfo.osgiServiceReference = provider.getOSGiServiceReference(service); 
+          if (instanceInfo.osgiServiceReference == null)
+        	  return null;
+          T obj = (T)instanceInfo.refBundleContext.getService(instanceInfo.osgiServiceReference);
+          if (obj != null)
+        	  return obj;
+    	}
+    	return null;
+    }
+    
+    private Bundle getDummyReferenceBundle() throws TargetInitializationException {
+        
+        if (dummyReferenceBundle != null)
+            return dummyReferenceBundle;
+        
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        
+        String EOL = System.getProperty("line.separator");
+        String bundleName = "dummy.sca." + RANDOM_NUMBER_GENERATOR.nextInt();
+        
+        
+        String manifestStr = "Manifest-Version: 1.0" + EOL +
+                        "Bundle-ManifestVersion: 2" + EOL +
+                        "Bundle-Name: " + bundleName + EOL +
+                        "Bundle-SymbolicName: " + bundleName + EOL +
+                        "Bundle-Version: " + "1.0.0" + EOL +
+                        "Bundle-Localization: plugin" + EOL;
+        
+                        
+        StringBuilder manifestBuf = new StringBuilder();
+        manifestBuf.append(manifestStr);
+       
+        try {
+            ByteArrayInputStream manifestStream = new ByteArrayInputStream(manifestBuf.toString().getBytes());
+            Manifest manifest = new Manifest();
+            manifest.read(manifestStream);
+            
+      
+            JarOutputStream jarOut = new JarOutputStream(out, manifest);
+
+            jarOut.close();
+            out.close();
+            
+            
+            ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+                   
+            dummyReferenceBundle = bundleContext.installBundle("file://" + bundleName + ".jar", in);
+            
+            dummyReferenceBundle.start();
+            
+        } catch (Exception e) {
+            throw new TargetInitializationException(e);
+        }
+        
+        return dummyReferenceBundle;
+        
+    }
+    
+    private void callLifecycleMethod(Object instance,
+            Class<? extends Annotation> annotationClass) throws Exception {
+
+        Method method = null;
+        if (annotationClass == Init.class) {
+            method = annotationProcessor.getInitMethod(instance);
+        } else if (annotationClass == Destroy.class) {
+            method = annotationProcessor.getDestroyMethod(instance);
+        }
+
+        if (method != null) {
+            method.setAccessible(true);
+            method.invoke(instance);
+        }
+    }
+    
+    private boolean isInitialized(Object instance) {
+        for (InstanceInfo<?> info : instanceInfoList.values()) {
+            if (info.osgiInstance == instance)
+                return true;
+        }
+        return false;
+    }
+    
+    private static class InstanceInfo<T> {
+        private T osgiInstance;
+        private ServiceReference osgiServiceReference;
+        private BundleContext refBundleContext;
+        private boolean isFirstInstance;
+
+    }
+    
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiRemotableInvoker.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiRemotableInvoker.java
new file mode 100644
index 0000000000..deb44d26fb
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiRemotableInvoker.java
@@ -0,0 +1,139 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.runtime;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.IdentityHashMap;
+import java.util.Map;
+
+import org.apache.tuscany.sca.databinding.DataBinding;
+import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint;
+import org.apache.tuscany.sca.implementation.osgi.context.OSGiAnnotations;
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.DataExchangeSemantics;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * An interceptor to enforce pass-by-value semantics for remotable interfaces
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiRemotableInvoker extends OSGiTargetInvoker implements DataExchangeSemantics {
+
+    private DataBindingExtensionPoint registry;
+    private Operation operation;
+    private OSGiAnnotations osgiAnnotations;
+
+    /**
+     * @param registry
+     * @param operation
+     * @param method
+     * @param component
+     */
+    public OSGiRemotableInvoker(OSGiAnnotations osgiAnnotations,
+                                DataBindingExtensionPoint registry,
+                                Operation operation,
+                                OSGiImplementationProvider provider,
+                                RuntimeComponentService service) {
+        super(operation, provider, service);
+        this.osgiAnnotations = osgiAnnotations;
+        this.registry = registry;
+        this.operation = operation;
+    }
+
+    @Override
+    public Object invokeMethod(Object targetObject, Method m, Message msg) throws InvocationTargetException {
+
+        Object result;
+        if (osgiAnnotations.isAllowsPassByReference(targetObject, m)) {
+            result = super.invokeMethod(targetObject, m, msg);
+        } else {
+            Object obj = msg.getBody();
+            msg.setBody(copy((Object[])obj));
+
+            result = super.invokeMethod(targetObject, m, msg);
+
+            if (operation.getOutputType() != null) {
+                String dataBindingId = operation.getOutputType().getDataBinding();
+                DataBinding dataBinding = registry.getDataBinding(dataBindingId);
+                result = copy(result, operation.getOutputType(), dataBinding);
+            }
+        }
+        return result;
+    }
+
+    public Object[] copy(Object[] args) {
+        if (args == null) {
+            return null;
+        }
+        Object[] copiedArgs = new Object[args.length];
+        Map<Object, Object> map = new IdentityHashMap<Object, Object>();
+        for (int i = 0; i < args.length; i++) {
+            if (args[i] == null) {
+                copiedArgs[i] = null;
+            } else {
+                Object copiedArg = map.get(args[i]);
+                if (copiedArg != null) {
+                    copiedArgs[i] = copiedArg;
+                } else {
+                    DataType dt = operation.getInputType().getLogical().get(i);
+                    String dataBindingId = dt.getDataBinding();
+                    DataBinding dataBinding = registry.getDataBinding(dataBindingId);
+                    copiedArg = copy(args[i], dt, dataBinding);
+                    map.put(args[i], copiedArg);
+                    copiedArgs[i] = copiedArg;
+                }
+            }
+        }
+        return copiedArgs;
+    }
+
+    public Object copy(Object arg, DataType dataType, DataBinding argDataBinding) {
+        if (arg == null) {
+            return null;
+        }
+        Object copiedArg;
+        if (argDataBinding != null) {
+            copiedArg = argDataBinding.copy(arg, dataType, operation);
+        } else {
+            copiedArg = arg;
+            dataType = registry.introspectType(arg, operation);
+            if (dataType != null) {
+                DataBinding binding = registry.getDataBinding(dataType.getDataBinding());
+                if (binding != null) {
+                    copiedArg = binding.copy(arg, dataType, operation);
+                }
+            }
+            // FIXME: What to do if it's not recognized?
+        }
+        return copiedArg;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.invocation.PassByValueAware#allowsPassByReference()
+     */
+    public boolean allowsPassByReference() {
+        return true;
+    }
+
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java
new file mode 100644
index 0000000000..deb39a47cd
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java
@@ -0,0 +1,199 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.runtime;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import org.apache.tuscany.sca.core.context.InstanceWrapper;
+import org.apache.tuscany.sca.core.invocation.TargetInvocationException;
+import org.apache.tuscany.sca.core.scope.Scope;
+import org.apache.tuscany.sca.core.scope.ScopeContainer;
+import org.apache.tuscany.sca.core.scope.TargetResolutionException;
+import org.apache.tuscany.sca.interfacedef.ConversationSequence;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.interfacedef.java.impl.JavaInterfaceUtil;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.EndpointReference;
+import org.apache.tuscany.sca.runtime.ReferenceParameters;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * Java->OSGi references use OSGiTargetInvoker to call methods from OSGi bundles
+ * OSGi->Java references use JDKProxyService and invocation handler and do not use this class
+ * OSGi->OSGi references go through OSGi reference mechanisms when a proxy is not used
+ *    When a proxy is used, this invoker is used to call methods from OSGi bundles
+ *    A proxy is used for OSGi->OSGi if
+ *       1) target reference properties are specified  OR
+ *       2) there are one or more non-blocking methods in the target interface OR
+ *       3) scope is not COMPOSITE
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiTargetInvoker<T> implements Invoker {
+
+    private Operation operation;
+    protected InstanceWrapper<T> target;
+
+    private final OSGiImplementationProvider provider;
+    private final RuntimeComponentService service;
+    
+    // Scope container is reset by the OSGi implementation provider if @Scope
+    // annotation is used to modify the scope (default is composite)
+    // Hence this field is initialized on the first invoke.
+    private ScopeContainer scopeContainer;
+
+    public OSGiTargetInvoker(
+            Operation operation, 
+            OSGiImplementationProvider provider, 
+            RuntimeComponentService service) {
+        
+
+        this.operation = operation;
+        this.service = service;
+        this.provider = provider;
+
+    }
+
+    /**
+     * Resolves the target service instance or returns a cached one
+     */
+    @SuppressWarnings("unchecked")
+    protected InstanceWrapper getInstance(Object contextId)
+        throws TargetResolutionException, TargetInvocationException {
+        
+        if (scopeContainer == null)
+            scopeContainer = provider.getScopeContainer();
+        
+        
+        return scopeContainer.getWrapper(contextId);
+
+    }
+
+    @SuppressWarnings("unchecked")
+    private Object invokeTarget(Message msg) throws InvocationTargetException {
+
+        if (scopeContainer == null)
+            scopeContainer = provider.getScopeContainer();
+        
+        
+        Operation op = msg.getOperation();
+        if (op == null) {
+            op = this.operation;
+        }
+        ConversationSequence sequence = op.getConversationSequence();
+
+        Object contextId = null;
+
+        EndpointReference from = msg.getFrom();
+        ReferenceParameters parameters = null;
+
+        if (from != null) {
+            parameters = from.getReferenceParameters();
+        }
+        // check what sort of context is required
+        if (scopeContainer != null) {
+            Scope scope = scopeContainer.getScope();
+            if (scope == Scope.REQUEST) {
+                contextId = Thread.currentThread();
+            } else if (scope == Scope.CONVERSATION && parameters != null) {
+                contextId = parameters.getConversationID();
+            }
+        }
+
+        try {
+        	
+            OSGiInstanceWrapper wrapper = (OSGiInstanceWrapper)getInstance(contextId);
+            Object instance;
+
+
+            // detects whether the scope container has created a conversation Id. This will
+            // happen in the case that the component has conversational scope but only the
+            // callback interface is conversational. Or in the callback case if the service interface
+            // is conversational and the callback interface isn't. If we are in this situation we need
+            // to get the contextId of this component and remove it after we have invoked the method on 
+            // it. It is possible that the component instance will not go away when it is removed below 
+            // because a callback conversation will still be holding a reference to it
+            boolean removeTemporaryConversationalComponentAfterCall = false;
+            if (parameters != null && (contextId == null) && (parameters.getConversationID() != null)) {
+                contextId = parameters.getConversationID();
+                removeTemporaryConversationalComponentAfterCall = true;
+            }
+            
+            instance = wrapper.getInstance(service);
+            
+            Method m = JavaInterfaceUtil.findMethod(instance.getClass(), operation);
+
+            Object ret = invokeMethod(instance, m, msg);
+
+            scopeContainer.returnWrapper(wrapper, contextId);
+
+            if ((sequence == ConversationSequence.CONVERSATION_END) || (removeTemporaryConversationalComponentAfterCall)) {
+                // if end conversation, or we have the special case where a conversational
+                // object was created to service the stateless half of a stateful component
+                scopeContainer.remove(contextId);
+                parameters.setConversationID(null);
+            }
+            
+            return ret;
+        } catch (InvocationTargetException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new InvocationTargetException(e);
+        }
+    }
+
+    protected Object invokeMethod(Object instance, Method m, Message msg) throws InvocationTargetException {
+
+        try {
+
+            Object payload = msg.getBody();
+
+            if (payload != null && !payload.getClass().isArray()) {
+                return m.invoke(instance, payload);
+            } else {
+                return m.invoke(instance, (Object[])payload);
+            }
+
+        } catch (InvocationTargetException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new InvocationTargetException(e);
+        }
+    }
+
+    public Message invoke(Message msg) {
+        try {
+            //            Object messageId = msg.getMessageID();
+            //            Message workContext = ThreadMessageContext.getMessageContext();
+            //            if (messageId != null) {
+            //                workContext.setCorrelationID(messageId);
+            //            }
+            Object resp = invokeTarget(msg);
+            msg.setBody(resp);
+        } catch (InvocationTargetException e) {
+            msg.setFaultBody(e.getCause());
+        }
+        return msg;
+    }
+
+
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/xml/OSGiImplementationProcessor.java b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/xml/OSGiImplementationProcessor.java
new file mode 100644
index 0000000000..7f246cb76c
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/xml/OSGiImplementationProcessor.java
@@ -0,0 +1,550 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.implementation.osgi.xml;
+
+import static javax.xml.XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI;
+import static javax.xml.XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
+
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.util.List;
+import java.util.StringTokenizer;
+
+import javax.xml.namespace.QName;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.ComponentType;
+import org.apache.tuscany.sca.assembly.Property;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl;
+import org.apache.tuscany.sca.assembly.xml.Constants;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.osgi.BundleReference;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ClassReference;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
+import org.apache.tuscany.sca.contribution.service.ContributionWriteException;
+import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl;
+import org.apache.tuscany.sca.implementation.osgi.impl.OSGiImplementationImpl;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceContract;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.apache.tuscany.sca.monitor.Problem.Severity;
+import org.osgi.framework.Bundle;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+
+/**
+ * 
+ * Process an <implementation.osgi/> element in a component definition. An instance of
+ * OSGiImplementation is created.
+ * Also associates the component type file with the implementation.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiImplementationProcessor implements StAXArtifactProcessor<OSGiImplementationImpl> {
+    
+    public static final QName IMPLEMENTATION_OSGI  = new QName(Constants.SCA10_TUSCANY_NS, "implementation.osgi");
+    
+    private static final String BUNDLE_SYMBOLICNAME= "bundleSymbolicName";
+    private static final String BUNDLE_VERSION     = "bundleVersion";
+    private static final String CLASSES            = "classes";
+    private static final String IMPORTS            = "imports";
+
+    private static final QName PROPERTIES_QNAME    = new QName(Constants.SCA10_TUSCANY_NS, "properties");
+    private static final QName PROPERTY_QNAME      = new QName(Constants.SCA10_TUSCANY_NS, "property");
+    
+    private JavaInterfaceFactory javaInterfaceFactory;
+    private AssemblyFactory assemblyFactory;
+    private ModelFactoryExtensionPoint modelFactories;
+    private Monitor monitor;
+    
+    private static final DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
+    static {
+        domFactory.setNamespaceAware(true);
+    }
+
+    public OSGiImplementationProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
+    	this.monitor = monitor;
+        this.modelFactories = modelFactories;
+        this.assemblyFactory = modelFactories.getFactory(AssemblyFactory.class);
+        this.javaInterfaceFactory = modelFactories.getFactory(JavaInterfaceFactory.class);
+    }
+    
+    /**
+     * Report a exception.
+     * 
+     * @param problems
+     * @param message
+     * @param model
+     */
+    private void error(String message, Object model, Exception ex) {
+    	 if (monitor != null) {
+	        Problem problem = new ProblemImpl(this.getClass().getName(), "impl-osgi-validation-messages", Severity.ERROR, model, message, ex);
+	        monitor.problem(problem);
+    	 }
+    }
+    
+    /**
+     * Report a error.
+     * 
+     * @param problems
+     * @param message
+     * @param model
+     */
+    private void error(String message, Object model, Object... messageParameters) {
+    	 if (monitor != null) {
+	        Problem problem = new ProblemImpl(this.getClass().getName(), "impl-osgi-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
+	        monitor.problem(problem);
+    	 }
+    }
+    
+    public QName getArtifactType() {
+        return IMPLEMENTATION_OSGI;
+    }
+
+    public Class<OSGiImplementationImpl> getModelType() {
+        return OSGiImplementationImpl.class;
+    }
+
+    private String[] tokenize(String str) {
+        StringTokenizer tokenizer = new StringTokenizer(str);
+        String[] tokens = new String[tokenizer.countTokens()];
+        for (int i= 0; i < tokens.length; i++) {
+            tokens[i] = tokenizer.nextToken();
+        }
+        
+        return tokens;
+    }
+    
+    public OSGiImplementationImpl read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+        assert IMPLEMENTATION_OSGI.equals(reader.getName());
+
+        String bundleSymbolicName = reader.getAttributeValue(null, BUNDLE_SYMBOLICNAME);
+        String bundleVersion = reader.getAttributeValue(null, BUNDLE_VERSION);
+        String imports = reader.getAttributeValue(null, IMPORTS);
+        String[] importList;
+        if (imports != null)
+            importList = tokenize(imports);
+        else
+            importList = new String[0];
+        String classes = reader.getAttributeValue(null, CLASSES);
+        String[] classList;
+        if (classes != null)
+            classList = tokenize(classes);
+        else
+            classList = new String[0];
+
+        Hashtable<String, List<ComponentProperty>> refProperties = 
+                new Hashtable<String, List<ComponentProperty>>();
+        Hashtable<String, List<ComponentProperty>> serviceProperties = 
+                new Hashtable<String, List<ComponentProperty>>();
+        Hashtable<String, List<ComponentProperty>> refCallbackProperties = 
+                new Hashtable<String, List<ComponentProperty>>();
+        Hashtable<String, List<ComponentProperty>> serviceCallbackProperties = 
+                new Hashtable<String, List<ComponentProperty>>();
+            
+        while (reader.hasNext()) {
+                
+            int next = reader.next();
+            if (next == END_ELEMENT && IMPLEMENTATION_OSGI.equals(reader.getName())) {
+                break;
+            }
+            else if (next == START_ELEMENT && PROPERTIES_QNAME.equals(reader.getName())) {
+                    
+                // FIXME: This is temporary code which allows reference and service properties used
+                //        for filtering OSGi services to be specified in <implementation.osgi/>
+                //        This should really be provided in the component type file since these
+                //        properties are associated with an implementation rather than a configured
+                //        instance of an implementation.
+                String refName = reader.getAttributeValue(null, "reference");
+                String serviceName = reader.getAttributeValue(null, "service");
+                String refCallbackName = reader.getAttributeValue(null, "referenceCallback");
+                String serviceCallbackName = reader.getAttributeValue(null, "serviceCallback");
+                List<ComponentProperty> props = readProperties(reader);
+                if (refName != null)
+                    refProperties.put(refName, props);
+                else if (serviceName != null)
+                    serviceProperties.put(serviceName, props);
+                else if (refCallbackName != null)
+                    refCallbackProperties.put(refCallbackName, props);
+                else if (serviceCallbackName != null)
+                    serviceCallbackProperties.put(serviceCallbackName, props);
+                else {
+                	error("PropertyShouldSpecifySR", reader);
+                    //throw new ContributionReadException("Properties in implementation.osgi should specify service or reference");
+                }
+            }
+
+        }
+            
+        OSGiImplementationImpl implementation = new OSGiImplementationImpl(
+                    modelFactories,
+                    bundleSymbolicName,
+                    bundleVersion,
+                    importList, 
+                    classList,
+                    refProperties,
+                    serviceProperties);
+        implementation.setCallbackProperties(refCallbackProperties, serviceCallbackProperties);
+           
+        implementation.setUnresolved(true);
+            
+        return implementation;
+        
+    }
+    
+
+    public void resolve(OSGiImplementationImpl impl, ModelResolver resolver) throws ContributionResolveException {
+        
+        try {
+        	
+        	if (impl == null || !impl.isUnresolved())
+        		return;
+        	
+        	impl.setUnresolved(false);
+            
+            BundleReference bundleReference = new BundleReference(impl.getBundleSymbolicName(), impl.getBundleVersion());
+            BundleReference resolvedBundle = resolver.resolveModel(BundleReference.class, bundleReference);
+            Bundle bundle = (Bundle)resolvedBundle.getBundle();
+            if (bundle != null) {
+                impl.setOSGiBundle(bundle);                
+            } else {
+            	error("CouldNotLocateOSGiBundle", impl, impl.getBundleSymbolicName());
+                //throw new ContributionResolveException("Could not locate OSGi bundle " + 
+                        //impl.getBundleSymbolicName());
+            	return;
+            }
+            
+            String bundleName = resolvedBundle.getBundleRelativePath();
+            String ctURI = bundleName.endsWith(".jar") || bundleName.endsWith(".JAR")? 
+                    bundleName.substring(0, bundleName.lastIndexOf(".")) : bundleName;
+            ctURI = ctURI.replaceAll("\\.", "/");
+            ctURI = ctURI + ".componentType";
+
+            ComponentType componentType = assemblyFactory.createComponentType();
+            componentType.setURI(ctURI);
+            componentType.setUnresolved(true);
+            componentType = resolver.resolveModel(ComponentType.class, componentType);
+            if (componentType.isUnresolved()) {
+            	error("MissingComponentTypeFile", impl, ctURI);
+                //throw new ContributionResolveException("missing .componentType side file " + ctURI);
+            	return;
+            }
+            
+            List<Service> services = componentType.getServices();
+            for (Service service : services) {
+                Interface interfaze = service.getInterfaceContract().getInterface();
+                if (interfaze instanceof JavaInterface) {
+                    JavaInterface javaInterface = (JavaInterface)interfaze;
+                    if (javaInterface.getJavaClass() == null) {
+                        
+                        javaInterface.setJavaClass(getJavaClass(resolver, javaInterface.getName()));
+                    }
+                    Class<?> callback = null;
+                    if (service.getInterfaceContract().getCallbackInterface() instanceof JavaInterface) {
+                        JavaInterface callbackInterface = (JavaInterface)service.getInterfaceContract().getCallbackInterface();
+                        if (callbackInterface.getJavaClass() == null) {
+                            callbackInterface.setJavaClass(getJavaClass(resolver, callbackInterface.getName()));
+                        }
+                        callback = callbackInterface.getJavaClass();
+                    }
+                    
+                    Service serv = createService(service, javaInterface.getJavaClass(), callback);
+                    impl.getServices().add(serv);
+                }
+            }
+            
+            List<Reference> references = componentType.getReferences();
+            for (Reference reference : references) {
+                Interface interfaze = reference.getInterfaceContract().getInterface();
+                if (interfaze instanceof JavaInterface) {
+                    JavaInterface javaInterface = (JavaInterface)interfaze;
+                    if (javaInterface.getJavaClass() == null) {
+                        javaInterface.setJavaClass(getJavaClass(resolver, javaInterface.getName()));
+                    }
+                    Reference ref = createReference(reference, javaInterface.getJavaClass());
+                    impl.getReferences().add(ref);
+                }
+                else
+                    impl.getReferences().add(reference);
+            }
+            
+            List<Property> properties = componentType.getProperties();
+            for (Property property : properties) {
+                impl.getProperties().add(property);
+            }
+            impl.setConstrainingType(componentType.getConstrainingType());
+            
+        } catch (InvalidInterfaceException e) {
+        	ContributionResolveException ce = new ContributionResolveException(e);
+        	error("ContributionResolveException", resolver, ce);
+            //throw ce;
+        }
+        
+    }
+    
+
+    private Class getJavaClass(ModelResolver resolver, String className) {
+        ClassReference ref = new ClassReference(className);
+        ref = resolver.resolveModel(ClassReference.class, ref);
+        return ref.getJavaClass();
+    }
+    
+    private Service createService(Service serv, Class<?> interfaze, Class<?> callbackInterfaze) throws InvalidInterfaceException {
+        Service service = assemblyFactory.createService();
+        JavaInterfaceContract interfaceContract = javaInterfaceFactory.createJavaInterfaceContract();
+        service.setInterfaceContract(interfaceContract);
+        
+        
+        // create a relative URI
+        service.setName(serv.getName());
+
+        JavaInterface callInterface = javaInterfaceFactory.createJavaInterface(interfaze);
+        service.getInterfaceContract().setInterface(callInterface);
+        
+        if (callbackInterfaze != null) {
+            JavaInterface callbackInterface = javaInterfaceFactory.createJavaInterface(callbackInterfaze);
+            service.getInterfaceContract().setCallbackInterface(callbackInterface);
+        }
+        else if (callInterface.getCallbackClass() != null) {
+            JavaInterface callbackInterface = javaInterfaceFactory.createJavaInterface(callInterface.getCallbackClass());
+            service.getInterfaceContract().setCallbackInterface(callbackInterface);
+        }
+        return service;
+    }
+    
+    private Reference createReference(Reference ref, Class<?> clazz) throws InvalidInterfaceException {
+        org.apache.tuscany.sca.assembly.Reference reference = assemblyFactory.createReference();
+        JavaInterfaceContract interfaceContract = javaInterfaceFactory.createJavaInterfaceContract();
+        reference.setInterfaceContract(interfaceContract);
+        
+        reference.setName(ref.getName());
+        reference.setMultiplicity(ref.getMultiplicity());
+
+        JavaInterface callInterface = javaInterfaceFactory.createJavaInterface(clazz);
+        reference.getInterfaceContract().setInterface(callInterface);
+        if (callInterface.getCallbackClass() != null) {
+            JavaInterface callbackInterface = javaInterfaceFactory.createJavaInterface(callInterface.getCallbackClass());
+            reference.getInterfaceContract().setCallbackInterface(callbackInterface);
+        }
+       
+        return reference;
+    }
+
+    public void write(OSGiImplementationImpl model, XMLStreamWriter outputSource) throws ContributionWriteException, XMLStreamException {
+        
+        //FIXME Implement this method
+    }
+    
+  
+    private QName getQNameValue(XMLStreamReader reader, String value) {
+        if (value != null) {
+            int index = value.indexOf(':');
+            String prefix = index == -1 ? "" : value.substring(0, index);
+            String localName = index == -1 ? value : value.substring(index + 1);
+            String ns = reader.getNamespaceContext().getNamespaceURI(prefix);
+            if (ns == null) {
+                ns = "";
+            }
+            return new QName(ns, localName, prefix);
+        } else {
+            return null;
+        }
+    }
+    
+    private void declareNamespace(Element element, String prefix, String ns) {
+        String qname = null;
+        if ("".equals(prefix)) {
+            qname = "xmlns";
+        } else {
+            qname = "xmlns:" + prefix;
+        }
+        Node node = element;
+        boolean declared = false;
+        while (node != null && node.getNodeType() == Node.ELEMENT_NODE) {
+            NamedNodeMap attrs = node.getAttributes();
+            if (attrs == null) {
+                break;
+            }
+            Node attr = attrs.getNamedItem(qname);
+            if (attr != null) {
+                declared = ns.equals(attr.getNodeValue());
+                break;
+            }
+            node = node.getParentNode();
+        }
+        if (!declared) {
+            org.w3c.dom.Attr attr = element.getOwnerDocument().createAttributeNS(XMLNS_ATTRIBUTE_NS_URI, qname);
+            attr.setValue(ns);
+            element.setAttributeNodeNS(attr);
+        }
+    }
+    
+    private Element createElement(Document document, QName name) {
+        String prefix = name.getPrefix();
+        String qname = (prefix != null && prefix.length() > 0) ? prefix + ":" + name.getLocalPart() : name
+            .getLocalPart();
+        return document.createElementNS(name.getNamespaceURI(), qname);
+    }
+
+    private void loadElement(XMLStreamReader reader, Element root) throws XMLStreamException {
+        Document document = root.getOwnerDocument();
+        Node current = root;
+        while (true) {
+            switch (reader.next()) {
+                case XMLStreamConstants.START_ELEMENT:
+                    QName name = reader.getName();
+                    Element child = createElement(document, name);
+
+                    // push the new element and make it the current one
+                    current.appendChild(child);
+                    current = child;
+
+                    declareNamespace(child, name.getPrefix(), name.getNamespaceURI());
+
+                    int count = reader.getNamespaceCount();
+                    for (int i = 0; i < count; i++) {
+                        String prefix = reader.getNamespacePrefix(i);
+                        String ns = reader.getNamespaceURI(i);
+                        declareNamespace(child, prefix, ns);
+                    }
+
+                    // add the attributes for this element
+                    count = reader.getAttributeCount();
+                    for (int i = 0; i < count; i++) {
+                        String ns = reader.getAttributeNamespace(i);
+                        String prefix = reader.getAttributePrefix(i);
+                        String localPart = reader.getAttributeLocalName(i);
+                        String value = reader.getAttributeValue(i);
+                        child.setAttributeNS(ns, localPart, value);
+                        declareNamespace(child, prefix, ns);
+                    }
+
+                    break;
+                case XMLStreamConstants.CDATA:
+                    current.appendChild(document.createCDATASection(reader.getText()));
+                    break;
+                case XMLStreamConstants.CHARACTERS:
+                    current.appendChild(document.createTextNode(reader.getText()));
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    // if we are back at the root then we are done
+                    if (current == root) {
+                        return;
+                    }
+
+                    // pop the element off the stack
+                    current = current.getParentNode();
+            }
+        }
+    }
+    
+    private Document readPropertyValue(XMLStreamReader reader, QName type)
+            throws XMLStreamException, ParserConfigurationException {
+    
+        Document doc = domFactory.newDocumentBuilder().newDocument();
+
+        // root element has no namespace and local name "value"
+        Element root = doc.createElementNS(null, "value");
+        if (type != null) {
+            org.w3c.dom.Attr xsi = doc.createAttributeNS(XMLNS_ATTRIBUTE_NS_URI, "xmlns:xsi");
+             xsi.setValue(W3C_XML_SCHEMA_INSTANCE_NS_URI);
+            root.setAttributeNodeNS(xsi);
+
+            String prefix = type.getPrefix();
+            if (prefix == null || prefix.length() == 0) {
+                prefix = "ns";
+            }
+
+            declareNamespace(root, prefix, type.getNamespaceURI());
+
+            org.w3c.dom.Attr xsiType = doc.createAttributeNS(W3C_XML_SCHEMA_INSTANCE_NS_URI, "xsi:type");
+            xsiType.setValue(prefix + ":" + type.getLocalPart());
+            root.setAttributeNodeNS(xsiType);
+        }
+        doc.appendChild(root);
+
+        loadElement(reader, root);
+        return doc;
+    }
+    
+    private  void readProperty(ComponentProperty prop, XMLStreamReader reader)
+            throws XMLStreamException, ContributionReadException {
+        
+    
+        prop.setName(reader.getAttributeValue(null, "name"));
+        String xsdType = reader.getAttributeValue(null, "type");
+        if (xsdType != null)       
+            prop.setXSDType(getQNameValue(reader, xsdType));
+        else
+            prop.setXSDType(SimpleTypeMapperImpl.XSD_STRING);
+        
+        try {
+            Document value = readPropertyValue(reader, prop.getXSDType());
+            prop.setValue(value);
+        } catch (ParserConfigurationException e) {
+        	ContributionReadException ce = new ContributionReadException(e);
+        	error("ContributionReadException", reader, ce);
+            throw ce;
+        }
+    }
+    
+    private  List<ComponentProperty> readProperties(XMLStreamReader reader)
+            throws XMLStreamException, ContributionReadException {
+        
+        List<ComponentProperty> properties = new ArrayList<ComponentProperty>();
+        
+        while (reader.hasNext()) {
+            
+            int next = reader.next();
+            if (next == END_ELEMENT && PROPERTIES_QNAME.equals(reader.getName())) {
+                break;
+            }
+            else if (next == START_ELEMENT && PROPERTY_QNAME.equals(reader.getName())) {
+                
+                ComponentProperty componentProperty = assemblyFactory.createComponentProperty();
+                readProperty(componentProperty, reader);
+                properties.add(componentProperty);
+            }
+        }
+        
+        return properties;
+
+    }
+   
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor b/java/sca-contrib/modules/implementation-osgi/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
new file mode 100644
index 0000000000..9ecff71874
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License. 
+
+# Implementation class for the artifact processor extension
+org.apache.tuscany.sca.implementation.osgi.xml.OSGiImplementationProcessor;qname=http://tuscany.apache.org/xmlns/sca/1.0#implementation.osgi,model=org.apache.tuscany.sca.implementation.osgi.OSGiImplementation
diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/resources/META-INF/services/org.apache.tuscany.sca.provider.ImplementationProviderFactory b/java/sca-contrib/modules/implementation-osgi/src/main/resources/META-INF/services/org.apache.tuscany.sca.provider.ImplementationProviderFactory
new file mode 100644
index 0000000000..c2cd957351
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/resources/META-INF/services/org.apache.tuscany.sca.provider.ImplementationProviderFactory
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one

+# or more contributor license agreements.  See the NOTICE file

+# distributed with this work for additional information

+# regarding copyright ownership.  The ASF licenses this file

+# to you under the Apache License, Version 2.0 (the

+# "License"); you may not use this file except in compliance

+# with the License.  You may obtain a copy of the License at

+# 

+#   http://www.apache.org/licenses/LICENSE-2.0

+# 

+# Unless required by applicable law or agreed to in writing,

+# software distributed under the License is distributed on an

+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

+# KIND, either express or implied.  See the License for the

+# specific language governing permissions and limitations

+# under the License. 

+

+# Implementation class for the implementation extension

+org.apache.tuscany.sca.implementation.osgi.runtime.OSGiImplementationProviderFactory;model=org.apache.tuscany.sca.implementation.osgi.OSGiImplementation

diff --git a/java/sca-contrib/modules/implementation-osgi/src/main/resources/impl-osgi-validation-messages.properties b/java/sca-contrib/modules/implementation-osgi/src/main/resources/impl-osgi-validation-messages.properties
new file mode 100644
index 0000000000..2503be0b13
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/main/resources/impl-osgi-validation-messages.properties
@@ -0,0 +1,25 @@
+#
+#
+#    Licensed to the Apache Software Foundation (ASF) under one
+#    or more contributor license agreements. See the NOTICE file
+#    distributed with this work for additional information
+#    regarding copyright ownership. The ASF licenses this file
+#    to you under the Apache License, Version 2.0 (the
+#    "License"); you may not use this file except in compliance
+#    with the License. You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing,
+#    software distributed under the License is distributed on an
+#    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#    KIND, either express or implied. See the License for the
+#    specific language governing permissions and limitations
+#    under the License.
+#
+#
+ContributionReadException = ContributionReadException occured due to:
+ContributionResolveException = ContributionResolveException occured due to:
+PropertyShouldSpecifySR = Properties in implementation.osgi should specify service or reference
+CouldNotLocateOSGiBundle = Could not locate OSGi bundle: {0}
+MissingComponentTypeFile = Missing .componentType side file: {0}
\ No newline at end of file
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiPropertyTestCase.java b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiPropertyTestCase.java
new file mode 100644
index 0000000000..fb4cb4207a
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiPropertyTestCase.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.runtime;
+
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestBundles;
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestInterface;
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestWithPropertyImpl;
+
+
+/**
+ * 
+ * Test the execution of an OSGi implementation type
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiPropertyTestCase extends OSGiTestCase {
+    
+    @Override
+    protected void setUp() throws Exception {
+        
+        className = OSGiTestWithPropertyImpl.class.getName();
+        compositeName = "osgiproptest.composite";
+        
+        OSGiTestBundles.createBundle("target/test-classes/OSGiTestService.jar", 
+                OSGiTestInterface.class, 
+                OSGiTestWithPropertyImpl.class);        
+        
+    }
+    
+    
+
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTestCase.java b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTestCase.java
new file mode 100644
index 0000000000..6a6d80f15e
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTestCase.java
@@ -0,0 +1,74 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.runtime;
+
+import java.lang.reflect.Proxy;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.host.embedded.SCADomain;
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestBundles;
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestImpl;
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestInterface;
+import org.apache.tuscany.sca.osgi.runtime.OSGiRuntime;
+
+
+/**
+ * 
+ * Test the execution of an OSGi implementation type
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiTestCase extends TestCase {
+    
+    protected String className;
+    protected String compositeName;
+    
+    protected void setUp() throws Exception {
+
+        className = OSGiTestImpl.class.getName();
+        compositeName = "osgitest.composite";
+        OSGiTestBundles.createBundle("target/test-classes/OSGiTestService.jar", OSGiTestInterface.class, OSGiTestImpl.class);
+        
+    }
+   
+    
+    @Override
+    protected void tearDown() throws Exception {
+        OSGiRuntime.stop();
+    }
+    
+    public void testOSGiComponent() throws Exception {
+        
+        SCADomain scaDomain = SCADomain.newInstance(compositeName);
+        OSGiTestInterface testService = scaDomain.getService(OSGiTestInterface.class, "OSGiTestServiceComponent");
+        assert(testService != null);
+        
+        assert(testService instanceof Proxy);
+        
+        String str = testService.testService();
+        
+        assertEquals(className, str);
+
+        scaDomain.close();
+              
+    }
+
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestBundles.java b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestBundles.java
new file mode 100644
index 0000000000..93b4dee033
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestBundles.java
@@ -0,0 +1,116 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.test;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.net.URL;
+import java.util.jar.JarOutputStream;
+import java.util.jar.Manifest;
+import java.util.zip.ZipEntry;
+
+
+/**
+ * 
+ * Utility class to create OSGi bundles
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiTestBundles {
+    private static String getPackageName(Class<?> cls) {
+        String name = cls.getName();
+        int index = name.lastIndexOf('.');
+        return index == -1 ? "" : name.substring(0, index);
+    }
+    
+    public static void createBundle(String jarName,
+            Class<?> interfaceClass, Class<?> implClass) throws Exception {
+
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+
+        String EOL = System.getProperty("line.separator");
+        
+        String packageName = getPackageName(interfaceClass);
+        String bundleName = interfaceClass.getName();
+
+        String manifestStr = "Manifest-Version: 1.0" + EOL
+                + "Bundle-ManifestVersion: 2" + EOL + "Bundle-Name: "
+                + bundleName + EOL + "Bundle-SymbolicName: " + bundleName + EOL
+                + "Bundle-Version: " + "1.0.0" + EOL
+                + "Bundle-Localization: plugin" + EOL;
+
+        StringBuilder manifestBuf = new StringBuilder();
+        manifestBuf.append(manifestStr);
+        manifestBuf.append("Export-Package: " + packageName + EOL);
+        manifestBuf.append("Import-Package: org.osgi.framework" + EOL);
+        manifestBuf.append("Bundle-Activator: " + implClass.getName() + EOL);
+
+        ByteArrayInputStream manifestStream = new ByteArrayInputStream(manifestBuf.toString().getBytes());
+        Manifest manifest = new Manifest();
+        manifest.read(manifestStream);
+        
+
+        JarOutputStream jarOut = new JarOutputStream(out, manifest);
+
+        String interfaceClassName = interfaceClass.getName().replaceAll("\\.",
+                "/")
+                + ".class";
+
+        URL url = interfaceClass.getClassLoader().getResource(
+                interfaceClassName);
+        String path = url.getPath();
+
+        ZipEntry ze = new ZipEntry(interfaceClassName);
+
+        jarOut.putNextEntry(ze);
+        FileInputStream file = new FileInputStream(path);
+        byte[] fileContents = new byte[file.available()];
+        file.read(fileContents);
+        jarOut.write(fileContents);
+        
+        String implClassName = implClass.getName().replaceAll("\\.",
+                "/")
+                + ".class";
+
+        url = implClass.getClassLoader().getResource(implClassName);
+        path = url.getPath();
+
+        ze = new ZipEntry(implClassName);
+
+        jarOut.putNextEntry(ze);
+        file = new FileInputStream(path);
+        fileContents = new byte[file.available()];
+        file.read(fileContents);
+        jarOut.write(fileContents);
+
+        file.close();
+
+        jarOut.close();
+        out.close();
+
+        FileOutputStream fileOut = new FileOutputStream(jarName);
+        fileOut.write(out.toByteArray());
+        fileOut.close();
+
+
+    }
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestImpl.java b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestImpl.java
new file mode 100644
index 0000000000..d412f6bd6a
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestImpl.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.test;
+
+import java.util.Hashtable;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+
+/**
+ * 
+ * Test class - Implementation of an OSGi service
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiTestImpl implements OSGiTestInterface, BundleActivator {
+    
+    public String testService() {
+        
+        return OSGiTestImpl.class.getName();
+        
+    }
+
+    public void start(BundleContext bc) throws Exception {
+        
+        bc.registerService(OSGiTestInterface.class.getName(), this, new Hashtable<String, Object>());
+        
+    }
+
+    public void stop(BundleContext bc) throws Exception {
+    }
+
+    
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestInterface.java b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestInterface.java
new file mode 100644
index 0000000000..feb9ce177e
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestInterface.java
@@ -0,0 +1,32 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.test;
+
+/**
+ *
+ * Test class - Interface for an OSGi service
+ *
+ * @version $Rev$ $Date$
+ */
+public interface OSGiTestInterface {
+
+    String testService() throws Exception ;
+
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestWithPropertyImpl.java b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestWithPropertyImpl.java
new file mode 100644
index 0000000000..e59032e3ea
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/test/OSGiTestWithPropertyImpl.java
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.test;
+
+import java.util.Hashtable;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+import org.oasisopen.sca.annotation.Property;
+
+/**
+ * 
+ * Test class - Implementation of an OSGi service
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiTestWithPropertyImpl implements OSGiTestInterface, BundleActivator {
+    
+    @Property
+    public double exchangeRate;
+    
+    private String currency;
+    
+    @Property
+    public void setCurrency(String currency) {
+        this.currency = currency;
+    }
+    
+    public String testService() throws Exception {
+        
+        if (exchangeRate != 2.0)
+            throw new Exception("Property exchangeRate not set correctly, expected 2.0, got " + exchangeRate);
+        if (!"USD".equals(currency))
+            throw new Exception("Property currency not set correctly, expected USD, got " + currency);
+        return OSGiTestWithPropertyImpl.class.getName();
+        
+    }
+
+    public void start(BundleContext bc) throws Exception {
+        
+        bc.registerService(OSGiTestInterface.class.getName(), this, new Hashtable<String, Object>());
+        
+    }
+
+    public void stop(BundleContext bc) throws Exception {
+    }
+
+    
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/xml/OSGiReadImplTestCase.java b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/xml/OSGiReadImplTestCase.java
new file mode 100644
index 0000000000..1831587896
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/xml/OSGiReadImplTestCase.java
@@ -0,0 +1,132 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.xml;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamReader;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.ComponentType;
+import org.apache.tuscany.sca.assembly.Composite;
+import org.apache.tuscany.sca.assembly.SCABindingFactory;
+import org.apache.tuscany.sca.assembly.builder.CompositeBuilder;
+import org.apache.tuscany.sca.assembly.builder.impl.CompositeBuilderImpl;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.processor.DefaultStAXArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.contribution.processor.ExtensibleStAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.implementation.osgi.impl.OSGiImplementationImpl;
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestBundles;
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestImpl;
+import org.apache.tuscany.sca.implementation.osgi.test.OSGiTestInterface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.impl.InterfaceContractMapperImpl;
+import org.apache.tuscany.sca.policy.IntentAttachPointTypeFactory;
+
+/**
+ * Test reading OSGi implementations.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiReadImplTestCase extends TestCase {
+
+    private XMLInputFactory inputFactory;
+    private StAXArtifactProcessor<Object> staxProcessor;
+    private CompositeBuilder compositeBuilder;
+
+    @Override
+    public void setUp() throws Exception {
+        DefaultExtensionPointRegistry extensionPoints = new DefaultExtensionPointRegistry();
+        inputFactory = XMLInputFactory.newInstance();
+        StAXArtifactProcessorExtensionPoint staxProcessors = new DefaultStAXArtifactProcessorExtensionPoint(extensionPoints);
+        staxProcessor = new ExtensibleStAXArtifactProcessor(staxProcessors, inputFactory, null, null);
+        
+        ModelFactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(ModelFactoryExtensionPoint.class);
+        AssemblyFactory assemblyFactory = modelFactories.getFactory(AssemblyFactory.class);
+        SCABindingFactory scaBindingFactory = modelFactories.getFactory(SCABindingFactory.class);
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        InterfaceContractMapper mapper = utilities.getUtility(InterfaceContractMapper.class);
+        IntentAttachPointTypeFactory attachPointTypeFactory = modelFactories.getFactory(IntentAttachPointTypeFactory.class);
+        compositeBuilder = new CompositeBuilderImpl(assemblyFactory, scaBindingFactory, attachPointTypeFactory, mapper, null);
+
+        OSGiTestBundles.createBundle("target/test-classes/OSGiTestService.jar", OSGiTestInterface.class, OSGiTestImpl.class);
+
+    }
+
+    public void testReadComposite() throws Exception {
+        InputStream is = getClass().getClassLoader().getResourceAsStream("osgitest.composite");
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(is);
+        Composite composite = (Composite)staxProcessor.read(reader);
+        assertNotNull(composite);
+
+        compositeBuilder.build(composite);
+    }
+
+    public void testReadAndResolveComposite() throws Exception {
+        InputStream is = getClass().getClassLoader().getResourceAsStream("osgitest.composite");
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(is);
+        Composite composite = (Composite)staxProcessor.read(reader);
+        assertNotNull(composite);
+        
+        is = getClass().getClassLoader().getResourceAsStream("OSGiTestService.componentType");
+        reader = inputFactory.createXMLStreamReader(is);
+        ComponentType componentType = (ComponentType)staxProcessor.read(reader);
+
+        ModelResolver resolver = new TestModelResolver(getClass().getClassLoader());
+        staxProcessor.resolve(componentType, resolver);
+        resolver.addModel(componentType);
+        
+        staxProcessor.resolve(composite, resolver);
+
+        compositeBuilder.build(composite);
+    }
+
+    public void testReadOSGiImplementation() throws Exception {
+
+        String str = "<?xml version=\"1.0\" encoding=\"ASCII\"?>" +
+                     "<implementation.osgi xmlns=\"http://tuscany.apache.org/xmlns/sca/1.0\" targetNamespace=\"http://osgi\" " +
+                     "bundleSymbolicName=\"OSGiTestService\" " +
+                     "bundleVersion=\"2.0.0\" " +
+                     "imports=\"import1.jar import2.jar\"" +
+                     "/>";
+        ByteArrayInputStream is = new ByteArrayInputStream(str.getBytes());
+
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(is);
+        reader.next();
+
+        OSGiImplementationImpl osgiImpl = (OSGiImplementationImpl)staxProcessor.read(reader);
+
+        assertEquals(osgiImpl.getBundleSymbolicName(), "OSGiTestService");
+        assertEquals(osgiImpl.getBundleVersion(), "2.0.0");
+        assertTrue(osgiImpl.getImports().length == 2);
+        assertEquals(osgiImpl.getImports()[0], "import1.jar");
+        assertEquals(osgiImpl.getImports()[1], "import2.jar");
+    }
+
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/xml/TestModelResolver.java b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/xml/TestModelResolver.java
new file mode 100644
index 0000000000..e1bbd97655
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/java/org/apache/tuscany/sca/implementation/osgi/xml/TestModelResolver.java
@@ -0,0 +1,106 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.implementation.osgi.xml;
+
+import java.lang.ref.WeakReference;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.tuscany.sca.assembly.ComponentType;
+import org.apache.tuscany.sca.assembly.Property;
+import org.apache.tuscany.sca.contribution.resolver.ClassReference;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.implementation.osgi.impl.OSGiImplementationImpl;
+
+
+/**
+ * A default implementation of an artifact resolver, based on a map.
+ *
+ * @version $Rev$ $Date$
+ */
+public class TestModelResolver implements ModelResolver {
+    private static final long serialVersionUID = -7826976465762296634L;
+    
+    private Map<Object, Object> map = new HashMap<Object, Object>();
+    
+    private WeakReference<ClassLoader> classLoader;
+    
+    public TestModelResolver(ClassLoader classLoader) {
+        this.classLoader = new WeakReference<ClassLoader>(classLoader);
+    }
+
+    public <T> T resolveModel(Class<T> modelClass, T unresolved) {
+        Object resolved = map.get(unresolved);
+        if (resolved != null) {
+            
+            if (unresolved instanceof OSGiImplementationImpl && !(resolved instanceof OSGiImplementationImpl)) {
+                
+                OSGiImplementationImpl impl = ((OSGiImplementationImpl)unresolved);
+                ComponentType componentType = (ComponentType)resolved;
+                
+                List<Property> properties = componentType.getProperties();
+                for (Property property : properties) {
+                    impl.getProperties().add(property);
+                }
+                impl.setUnresolved(false);
+                return unresolved;
+            }
+                
+            
+            // Return the resolved object
+            return modelClass.cast(resolved);
+            
+        } else if (unresolved instanceof ClassReference) {
+            
+            // Load a class on demand
+            ClassReference classReference = (ClassReference)unresolved;
+            Class clazz;
+            try {
+                clazz = Class.forName(classReference.getClassName(), true, classLoader.get());
+            } catch (ClassNotFoundException e) {
+                
+                // Return the unresolved object
+                return unresolved;
+            }
+            
+            // Store a new ClassReference wrapping the loaded class
+            resolved = new ClassReference(clazz);
+            map.put(resolved, resolved);
+            
+            // Return the resolved ClassReference
+            return modelClass.cast(resolved);
+           
+        } else {
+            
+            // Return the unresolved object
+            return unresolved;
+        }
+    }
+    
+    public void addModel(Object resolved) {
+        map.put(resolved, resolved);
+    }
+    
+    public Object removeModel(Object resolved) {
+        return map.remove(resolved);
+    }
+    
+}
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/resources/OSGiTestService.componentType b/java/sca-contrib/modules/implementation-osgi/src/test/resources/OSGiTestService.componentType
new file mode 100644
index 0000000000..254ce99d59
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/resources/OSGiTestService.componentType
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+-->
+<componentType xmlns="http://www.osoa.org/xmlns/sca/1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+    <service name="OSGiTestService">
+        <interface.java interface="org.apache.tuscany.sca.implementation.osgi.test.OSGiTestInterface"/>
+    </service>
+    
+    <property name="currency" type="xsd:string" >GBP</property> 
+    <property name="exchangeRate" type="xsd:double" >1.0</property> 
+    
+</componentType>
diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/resources/osgiproptest.composite b/java/sca-contrib/modules/implementation-osgi/src/test/resources/osgiproptest.composite
new file mode 100644
index 0000000000..0b31145407
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/resources/osgiproptest.composite
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>

+<!--

+    * Licensed to the Apache Software Foundation (ASF) under one

+    * or more contributor license agreements.  See the NOTICE file

+    * distributed with this work for additional information

+    * regarding copyright ownership.  The ASF licenses this file

+    * to you under the Apache License, Version 2.0 (the

+    * "License"); you may not use this file except in compliance

+    * with the License.  You may obtain a copy of the License at

+    * 

+    *   http://www.apache.org/licenses/LICENSE-2.0

+    * 

+    * Unless required by applicable law or agreed to in writing,

+    * software distributed under the License is distributed on an

+    * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

+    * KIND, either express or implied.  See the License for the

+    * specific language governing permissions and limitations

+    * under the License.    

+-->

+<composite xmlns="http://www.osoa.org/xmlns/sca/1.0" 

+           xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/1.0"

+           xmlns:xsd="http://www.w3.org/2001/XMLSchema"

+           name="OSGiTestComposite">

+

+    <component name="OSGiTestServiceComponent">

+        <tuscany:implementation.osgi 

+            bundle="OSGiTestService" 

+            bundleSymbolicName="org.apache.tuscany.sca.implementation.osgi.test.OSGiTestInterface"

+            classes="org.apache.tuscany.sca.implementation.osgi.test.OSGiTestWithPropertyImpl"

+        />

+        

+        <property name="currency" type="xsd:string" >USD</property> 

+        <property name="exchangeRate" type="xsd:double" >2.0</property> 

+            

+    </component>

+

+</composite>

diff --git a/java/sca-contrib/modules/implementation-osgi/src/test/resources/osgitest.composite b/java/sca-contrib/modules/implementation-osgi/src/test/resources/osgitest.composite
new file mode 100644
index 0000000000..5465eec8d9
--- /dev/null
+++ b/java/sca-contrib/modules/implementation-osgi/src/test/resources/osgitest.composite
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>

+<!--

+    * Licensed to the Apache Software Foundation (ASF) under one

+    * or more contributor license agreements.  See the NOTICE file

+    * distributed with this work for additional information

+    * regarding copyright ownership.  The ASF licenses this file

+    * to you under the Apache License, Version 2.0 (the

+    * "License"); you may not use this file except in compliance

+    * with the License.  You may obtain a copy of the License at

+    * 

+    *   http://www.apache.org/licenses/LICENSE-2.0

+    * 

+    * Unless required by applicable law or agreed to in writing,

+    * software distributed under the License is distributed on an

+    * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

+    * KIND, either express or implied.  See the License for the

+    * specific language governing permissions and limitations

+    * under the License.    

+-->

+<composite xmlns="http://www.osoa.org/xmlns/sca/1.0" 

+           xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/1.0"

+           xmlns:xsd="http://www.w3.org/2001/XMLSchema"

+           name="OSGiTestComposite">

+

+    <component name="OSGiTestServiceComponent">

+        <tuscany:implementation.osgi 

+            bundle="OSGiTestService" 

+            bundleSymbolicName="org.apache.tuscany.sca.implementation.osgi.test.OSGiTestInterface"

+        />

+        

+        <property name="currency" type="xsd:string" >USD</property> 

+        <property name="exchangeRate" type="xsd:double" >2.0</property> 

+            

+    </component>

+

+</composite>