Create 2.0 M4 release branch

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@830484 13f79535-47bb-0310-9956-ffa450edef68

8 files changed, 714 insertions, 0 deletions

diff --git a/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiDistributionProvider.java b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiDistributionProvider.java
new file mode 100644
index 0000000000..e54d2eee7b
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiDistributionProvider.java
@@ -0,0 +1,86 @@
+/*
+ * 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.util.Dictionary;
+import java.util.Hashtable;
+
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.Constants;
+
+/**
+ * OSGi distribution provider for remote services
+ */
+public class OSGiDistributionProvider {
+    /**
+     * Registered by the distribution provider on one of its services to indicate the 
+     * supported configuration types.
+     */
+    public static final String REMOTE_CONFIGS_SUPPORTED = "remote.configs.supported"; // String+
+
+    /**
+     * Registered by the distribution provider on one of its services to indicate the vocabulary 
+     * of implemented intents.
+     */
+    public static final String REMOTE_INTENTS_SUPPORTED = "remote.intents.supported"; // String+ 
+
+    /**
+     * Service Registration property for the name of the Distribution Provider
+     * product.
+     * <p>
+     * The value of this property is of type String.
+     */
+    static final String PRODUCT_NAME = "osgi.remote.distribution.product";
+
+    /**
+     * Service Registration property for the version of the Distribution
+     * Provider product.
+     * <p>
+     * The value of this property is of type String.
+     */
+    static final String PRODUCT_VERSION = "osgi.remote.distribution.product.version";
+
+    /**
+     * Service Registration property for the Distribution Provider product
+     * vendor name.
+     * <p>
+     * The value of this property is of type String.
+     */
+    static final String VENDOR_NAME = "osgi.remote.distribution.vendor";
+
+    private BundleContext bundleContext;
+
+    public OSGiDistributionProvider(BundleContext bundleContext) {
+        super();
+        this.bundleContext = bundleContext;
+    }
+
+    public Dictionary<String, Object> getProperties() {
+        Dictionary headers = bundleContext.getBundle().getHeaders();
+        Hashtable<String, Object> props = new Hashtable<String, Object>();
+        props.put(PRODUCT_NAME, "Apache Tuscany SCA");
+        props.put(PRODUCT_VERSION, headers.get(Constants.BUNDLE_VERSION));
+        props.put(VENDOR_NAME, headers.get(Constants.BUNDLE_VENDOR));
+        props.put(REMOTE_CONFIGS_SUPPORTED, new String[] {"org.osgi.sca"});
+        // FIXME: We need to populate the list of intents from the SCA definitions
+        props.put(REMOTE_INTENTS_SUPPORTED, new String[] {});
+        return props;
+    }
+}
diff --git a/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProvider.java b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProvider.java
new file mode 100644
index 0000000000..7c2b90e601
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProvider.java
@@ -0,0 +1,227 @@
+/*
+ * 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 static org.apache.tuscany.sca.implementation.osgi.OSGiProperty.REMOTE_CONFIG_SCA;
+import static org.apache.tuscany.sca.implementation.osgi.OSGiProperty.SCA_REFERENCE;
+import static org.apache.tuscany.sca.implementation.osgi.OSGiProperty.SERVICE_IMPORTED;
+import static org.apache.tuscany.sca.implementation.osgi.OSGiProperty.SERVICE_IMPORTED_CONFIGS;
+import static org.osgi.framework.Constants.SERVICE_RANKING;
+
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Extensible;
+import org.apache.tuscany.sca.core.invocation.ProxyFactory;
+import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
+import org.apache.tuscany.sca.implementation.osgi.OSGiImplementation;
+import org.apache.tuscany.sca.implementation.osgi.OSGiProperty;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+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.provider.ImplementationProvider;
+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.oasisopen.sca.ServiceRuntimeException;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.BundleException;
+import org.osgi.framework.InvalidSyntaxException;
+import org.osgi.framework.ServiceFactory;
+import org.osgi.framework.ServiceReference;
+import org.osgi.framework.ServiceRegistration;
+
+/**
+ *
+ */
+public class OSGiImplementationProvider implements ImplementationProvider {
+    private RuntimeComponent component;
+    private ProxyFactoryExtensionPoint proxyFactoryExtensionPoint;
+    private Bundle osgiBundle;
+    private OSGiImplementation implementation;
+    private List<ServiceRegistration> registrations = new ArrayList<ServiceRegistration>();
+
+    public OSGiImplementationProvider(RuntimeComponent component,
+                                      OSGiImplementation impl,
+                                      ProxyFactoryExtensionPoint proxyFactoryExtensionPoint) throws BundleException {
+        this.component = component;
+        this.proxyFactoryExtensionPoint = proxyFactoryExtensionPoint;
+        this.implementation = impl;
+        this.osgiBundle = impl.getBundle();
+    }
+
+    public Invoker createInvoker(RuntimeComponentService service, Operation operation) {
+        return new OSGiTargetInvoker(operation, this, service);
+    }
+
+    public void start() {
+        // First try to start the osgi bundle
+        try {
+            int state = osgiBundle.getState();
+            if ((state & Bundle.STARTING) == 0 && (state & Bundle.ACTIVE) == 0) {
+                osgiBundle.start();
+            }
+        } catch (BundleException e) {
+            throw new ServiceRuntimeException(e);
+        }
+
+        for (ComponentReference ref : component.getReferences()) {
+            RuntimeComponentReference reference = (RuntimeComponentReference)ref;
+            InterfaceContract interfaceContract = reference.getInterfaceContract();
+            JavaInterface javaInterface = (JavaInterface)interfaceContract.getInterface();
+            final Class<?> interfaceClass = javaInterface.getJavaClass();
+
+            //            final Hashtable<String, Object> props = new Hashtable<String, Object>();
+            //            props.put(FILTER_MATCH_CRITERIA, "");
+            //            Collection<String> interfaceNames = new ArrayList<String>();
+            //            props.put(INTERFACE_MATCH_CRITERIA, interfaceNames);
+            //            interfaceNames.add(interfaceClass.getName());
+
+            final Hashtable<String, Object> osgiProps = getOSGiProperties(reference);
+            osgiProps.put(SERVICE_RANKING, Integer.MAX_VALUE);
+            osgiProps.put(SCA_REFERENCE, component.getURI() + "#reference(" + ref.getName() + ")");
+            osgiProps.put(SERVICE_IMPORTED, "true");
+            osgiProps.put(SERVICE_IMPORTED_CONFIGS, new String[] {REMOTE_CONFIG_SCA});
+
+            for (RuntimeWire wire : reference.getRuntimeWires()) {
+                final OSGiServiceFactory serviceFactory = new OSGiServiceFactory(interfaceClass.getName(), wire);
+                ServiceRegistration registration =
+                    AccessController.doPrivileged(new PrivilegedAction<ServiceRegistration>() {
+                        public ServiceRegistration run() {
+                            // Register the proxy as OSGi service
+                            BundleContext context = osgiBundle.getBundleContext();
+                            ServiceRegistration registration =
+                                context.registerService(interfaceClass.getName(), serviceFactory, osgiProps);
+                            return registration;
+                        }
+                    });
+                registrations.add(registration);
+            }
+        }
+    }
+
+    public void stop() {
+        for (ServiceRegistration registration : registrations) {
+            registration.unregister();
+        }
+        registrations.clear();
+        try {
+            int state = osgiBundle.getState();
+            if ((state & Bundle.STOPPING) == 0 && (state & Bundle.ACTIVE) != 0) {
+                osgiBundle.stop();
+            }
+        } catch (BundleException e) {
+            throw new ServiceRuntimeException(e);
+        }
+    }
+
+    public boolean supportsOneWayInvocation() {
+        return false;
+    }
+
+    /**
+     * Get all the OSGi properties from the extension list
+     * @param extensible
+     * @return
+     */
+    protected Hashtable<String, Object> getOSGiProperties(Extensible extensible) {
+        Hashtable<String, Object> props = new Hashtable<String, Object>();
+        for (Object ext : extensible.getExtensions()) {
+            if (ext instanceof OSGiProperty) {
+                OSGiProperty p = (OSGiProperty)ext;
+                props.put(p.getName(), p.getValue());
+            }
+        }
+        return props;
+    }
+
+    protected Object getOSGiService(ComponentService service) {
+        JavaInterface javaInterface = (JavaInterface)service.getInterfaceContract().getInterface();
+        // String filter = getOSGiFilter(provider.getOSGiProperties(service));
+        // FIXME: What is the filter?
+        String filter = "(!(" + SERVICE_IMPORTED + "=*))";
+        // "(sca.service=" + component.getURI() + "#service-name\\(" + service.getName() + "\\))";
+        BundleContext bundleContext = osgiBundle.getBundleContext();
+        ServiceReference ref;
+        try {
+            ref = bundleContext.getServiceReferences(javaInterface.getName(), filter)[0];
+        } catch (InvalidSyntaxException e) {
+            throw new ServiceRuntimeException(e);
+        }
+        if (ref != null) {
+            Object instance = bundleContext.getService(ref);
+            return instance;
+        } else {
+            return null;
+        }
+    }
+
+    RuntimeComponent getComponent() {
+        return component;
+    }
+
+    OSGiImplementation getImplementation() {
+        return implementation;
+    }
+
+    public class OSGiServiceFactory implements ServiceFactory {
+        private RuntimeWire wire;
+        private String interfaceName;
+
+        /**
+         * @param interfaceName
+         * @param wire
+         */
+        public OSGiServiceFactory(String interfaceName, RuntimeWire wire) {
+            super();
+            this.interfaceName = interfaceName;
+            this.wire = wire;
+        }
+
+        public Object getService(Bundle bundle, ServiceRegistration registration) {
+            Class<?> interfaceClass = null;
+            try {
+                interfaceClass = bundle.loadClass(interfaceName);
+            } catch (ClassNotFoundException e) {
+                return null;
+            }
+            ProxyFactory proxyService = proxyFactoryExtensionPoint.getInterfaceProxyFactory();
+            if (!interfaceClass.isInterface()) {
+                proxyService = proxyFactoryExtensionPoint.getClassProxyFactory();
+            }
+            Object proxy = proxyService.createProxy(interfaceClass, wire);
+            return proxy;
+        }
+
+        public void ungetService(Bundle bundle, ServiceRegistration registration, Object service) {
+            // Do we need to release the proxy?
+        }
+
+    }
+
+}
diff --git a/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProviderFactory.java b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProviderFactory.java
new file mode 100644
index 0000000000..0e4a3ef995
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationProviderFactory.java
@@ -0,0 +1,59 @@
+/*
+ * 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.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.invocation.ProxyFactoryExtensionPoint;
+import org.apache.tuscany.sca.implementation.osgi.OSGiImplementation;
+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 ProxyFactoryExtensionPoint proxyFactoryExtensionPoint;
+
+    public OSGiImplementationProviderFactory(ExtensionPointRegistry extensionPoints) {
+        proxyFactoryExtensionPoint = extensionPoints.getExtensionPoint(ProxyFactoryExtensionPoint.class);
+    }
+
+    public ImplementationProvider createImplementationProvider(RuntimeComponent component,
+                                                               OSGiImplementation implementation) {
+
+        try {
+
+            return new OSGiImplementationProvider(component, implementation, proxyFactoryExtensionPoint);
+
+        } catch (BundleException e) {
+            throw new RuntimeException(e);
+        }
+
+    }
+
+    public Class<OSGiImplementation> getModelType() {
+        return OSGiImplementation.class;
+    }
+
+}
diff --git a/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationRuntimeActivator.java b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationRuntimeActivator.java
new file mode 100644
index 0000000000..8bbfc19323
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiImplementationRuntimeActivator.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.runtime;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceRegistration;
+
+/**
+ * Bundle activator to receive the BundleContext
+ */
+public class OSGiImplementationRuntimeActivator implements BundleActivator {
+    private static BundleContext bundleContext;
+    private ServiceRegistration distributionProvider;
+
+    public void start(BundleContext context) throws Exception {
+        bundleContext = context;
+        OSGiDistributionProvider provider = new OSGiDistributionProvider(bundleContext);
+        distributionProvider =
+            bundleContext.registerService(OSGiDistributionProvider.class.getName(), provider, provider.getProperties());
+    }
+
+    public void stop(BundleContext context) throws Exception {
+        if (distributionProvider != null) {
+            distributionProvider.unregister();
+        }
+        bundleContext = null;
+    }
+
+    static BundleContext getBundleContext() {
+        return bundleContext;
+    }
+
+}
diff --git a/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java
new file mode 100644
index 0000000000..a9a2fdbd0b
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/java/org/apache/tuscany/sca/implementation/osgi/runtime/OSGiTargetInvoker.java
@@ -0,0 +1,210 @@
+/*
+ * 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.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.util.List;
+
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.interfacedef.java.JavaOperation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.osgi.framework.Constants;
+
+/**
+ * The Invoker looks up the corresponding OSGi service from the OSGi service registry
+ * and delegate the call to it.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiTargetInvoker implements Invoker {
+
+    private Operation operation;
+
+    private final OSGiImplementationProvider provider;
+    private final RuntimeComponent component;
+    private final RuntimeComponentService service;
+
+    public OSGiTargetInvoker(Operation operation, OSGiImplementationProvider provider, RuntimeComponentService service) {
+
+        this.operation = operation;
+        this.service = service;
+        this.provider = provider;
+        this.component = provider.getComponent();
+
+    }
+
+    private Object invokeTarget(Message msg) throws InvocationTargetException {
+
+        Operation op = msg.getOperation();
+        if (op == null) {
+            op = this.operation;
+        }
+
+        try {
+            Object instance = provider.getOSGiService(service);
+            Method m = findMethod(instance.getClass(), operation);
+
+            Object ret = invokeMethod(instance, m, msg);
+
+            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 resp = invokeTarget(msg);
+            msg.setBody(resp);
+        } catch (InvocationTargetException e) {
+            msg.setFaultBody(e.getCause());
+        }
+        return msg;
+    }
+
+    private String getOSGiFilter(Hashtable<String, Object> props) {
+        Object serviceID = props.get(Constants.SERVICE_ID);
+        if (serviceID != null) {
+            return "(" + Constants.SERVICE_ID + "=" + serviceID + ")";
+        }
+
+        String filter = "";
+
+        if (props != null && props.size() > 0) {
+            int propCount = 0;
+            for (String propName : props.keySet()) {
+                String value = String.valueOf(props.get(propName));
+                StringBuffer buf = new StringBuffer();
+                for (char c : value.toCharArray()) {
+                    if (c == '(' || c == ')') {
+                        buf.append("\\" + c);
+                    } else {
+                        buf.append(c);
+                    }
+                }
+                filter = filter + "(" + propName + "=" + buf.toString() + ")";
+                propCount++;
+            }
+
+            if (propCount > 1) {
+                filter = "(&" + filter + ")";
+            }
+        } else {
+            filter = null;
+        }
+        return filter;
+    }
+
+    /**
+     * @Deprecated
+     */
+    private static Class<?>[] getPhysicalTypes(Operation operation) {
+        DataType<List<DataType>> inputType = operation.getInputType();
+        if (inputType == null) {
+            return new Class<?>[] {};
+        }
+        List<DataType> types = inputType.getLogical();
+        Class<?>[] javaTypes = new Class<?>[types.size()];
+        for (int i = 0; i < javaTypes.length; i++) {
+            Type physical = types.get(i).getPhysical();
+            if (physical instanceof Class<?>) {
+                javaTypes[i] = (Class<?>)physical;
+            } else {
+                throw new UnsupportedOperationException();
+            }
+        }
+        return javaTypes;
+    }
+
+    /**
+     * Return the method on the implementation class that matches the operation.
+     *
+     * @param implClass the implementation class or interface
+     * @param operation the operation to match
+     * @return the method described by the operation
+     * @throws NoSuchMethodException if no such method exists
+     * @Deprecated
+     */
+    public static Method findMethod(Class<?> implClass, Operation operation) throws NoSuchMethodException {
+        String name = operation.getName();
+        if (operation instanceof JavaOperation) {
+            name = ((JavaOperation)operation).getJavaMethod().getName();
+        }
+        Interface interface1 = operation.getInterface();
+        int numParams = operation.getInputType().getLogical().size();
+        if (interface1 != null && interface1.isRemotable()) {
+            List<Method> matchingMethods = new ArrayList<Method>();
+            for (Method m : implClass.getMethods()) {
+                if (m.getName().equals(name) && m.getParameterTypes().length == numParams) {
+                    matchingMethods.add(m);
+                }
+            }
+
+            // TUSCANY-2180 If there is only one method then we just match on the name
+            // (this is the same as the existing behaviour)
+            if (matchingMethods.size() == 1) {
+                return matchingMethods.get(0);
+            }
+            if (matchingMethods.size() > 1) {
+                // TUSCANY-2180 We need to check the parameter types too
+                Class<?>[] paramTypes = getPhysicalTypes(operation);
+                return implClass.getMethod(name, paramTypes);
+            }
+
+            // No matching method found
+            throw new NoSuchMethodException("No matching method for operation " + operation.getName()
+                + " is found on "
+                + implClass);
+        }
+        Class<?>[] paramTypes = getPhysicalTypes(operation);
+        return implClass.getMethod(name, paramTypes);
+    }
+
+}
diff --git a/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/resources/META-INF/definitions.xml b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/resources/META-INF/definitions.xml
new file mode 100644
index 0000000000..f531c2c4ed
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/resources/META-INF/definitions.xml
@@ -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.    
+-->
+<sca:definitions xmlns:sca="http://docs.oasis-open.org/ns/opencsa/sca/200903" 
+    targetNamespace="http://www.osgi.org/xmlns/sca/intents/v1.0.0">
+                 
+    <intent name="passByReference" constrains="sca:implementation" 
+        intentType="implementation">
+        <description>
+            An OSGi intent to pass data by reference
+        </description>
+    </intent>
+    
+    <intent name="passByValue" constrains="sca:implementation" 
+        intentType="implementation">
+        <description>
+            An OSGi intent to pass data by value
+        </description>
+    </intent>
+    
+</sca:definitions>
\ No newline at end of file
diff --git a/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/resources/META-INF/services/org.apache.tuscany.sca.provider.ImplementationProviderFactory b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/resources/META-INF/services/org.apache.tuscany.sca.provider.ImplementationProviderFactory
new file mode 100644
index 0000000000..c2cd957351
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/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/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/resources/impl-osgi-validation-messages.properties b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/src/main/resources/impl-osgi-validation-messages.properties
new file mode 100644
index 0000000000..2503be0b13
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/implementation-osgi-runtime/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