Copying modules from Equinox branch, to start merging the delta changes from 1.x/original trunk

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@718815 13f79535-47bb-0310-9956-ffa450edef68

17 files changed, 1736 insertions, 0 deletions

diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringBeanNotFoundException.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringBeanNotFoundException.java
new file mode 100644
index 0000000000..35df76fabc
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringBeanNotFoundException.java
@@ -0,0 +1,39 @@
+/*
+ * 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.spring;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class SpringBeanNotFoundException extends Exception {
+
+    private static final long serialVersionUID = -1157790036638157553L;
+
+    public SpringBeanNotFoundException(String msg) {
+        super(msg);
+    }
+    
+    public SpringBeanNotFoundException(Throwable e) {
+        super(e);
+    }
+    
+    public SpringBeanNotFoundException(String msg, Throwable e) {
+        super(msg,e);
+    }
+}
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringImplementation.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringImplementation.java
new file mode 100644
index 0000000000..8f49a1751b
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringImplementation.java
@@ -0,0 +1,164 @@
+/*
+ * 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.spring;
+
+import java.util.Hashtable;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.ComponentType;
+import org.apache.tuscany.sca.assembly.Extensible;
+import org.apache.tuscany.sca.assembly.Implementation;
+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.impl.ImplementationImpl;
+import org.apache.tuscany.sca.implementation.spring.xml.SpringBeanElement;
+import org.springframework.core.io.Resource;
+
+/**
+ * Represents a Spring implementation.
+ * 
+ * @version $Rev: 511195 $ $Date: 2007-02-24 02:29:46 +0000 (Sat, 24 Feb 2007) $ 
+ */
+public class SpringImplementation extends ImplementationImpl implements Implementation, Extensible {
+
+    /** The location attribute which points to the Spring application-context XML file **/
+    private String location;
+    /** The application-context file as a Spring Resource **/
+    private Resource resource;
+    /** **/
+    private ComponentType componentType;
+    /** Mapping of Services to Beans **/
+    private Hashtable<String, SpringBeanElement> serviceMap;
+    /** Mapping of property names to Java class **/
+    private Hashtable<String, Class> propertyMap;
+
+    public SpringImplementation() {
+        this.location = null;
+        this.resource = null;
+        setUnresolved(true);
+        serviceMap = new Hashtable<String, SpringBeanElement>();
+        propertyMap = new Hashtable<String, Class>();
+    }
+
+
+    /**
+     * Returns the location attribute for this Spring implementation
+     * @return URI for the location of the Spring implementation
+     */
+    public String getLocation() {
+        return location;
+    }
+
+    /**
+     * Sets the location attribute for this Spring implementation
+     * @param location a URI to the Spring application-context file
+     */
+    public void setLocation(String location) {
+        this.location = location;
+        return;
+    }
+
+    /**
+     * 
+     * @param resource
+     */
+    public void setResource(Resource resource) {
+        this.resource = resource;
+    }
+
+    /**
+     * 
+     * @return
+     */
+    public Resource getResource() {
+        return resource;
+    }
+
+    /**
+     * Returns the componentType for this Spring implementation
+     * @return
+     */
+    public ComponentType getComponentType() {
+        return componentType;
+    }
+
+    /**
+     * Sets the componentType for this Spring implementation
+     * @param componentType
+     */
+    public void setComponentType(ComponentType componentType) {
+        this.componentType = componentType;
+    }
+
+    /**
+     * Returns the Spring Bean which implements a particular service
+     * @param service the service
+     * @return the bean which implements the service, as a SpringBeanElement
+     */
+    public SpringBeanElement getBeanFromService(Service service) {
+        SpringBeanElement theBean = serviceMap.get(service.getName());
+        return theBean;
+    }
+
+    /**
+     * Sets the mapping from a service to the Spring Bean that implements the service
+     * @param service the service
+     * @param theBean a SpringBeanElement for the Bean implementing the service
+     */
+    public void setBeanForService(Service service, SpringBeanElement theBean) {
+        serviceMap.put(service.getName(), theBean);
+    }
+
+    /**
+     * Add a mapping from a SCA property name to a Java class for the property
+     * @param propertyName
+     * @param propertyClass
+     */
+    public void setPropertyClass(String propertyName, Class propertyClass) {
+        if (propertyName == null || propertyClass == null)
+            return;
+        propertyMap.put(propertyName, propertyClass);
+        return;
+    }
+
+    /**
+     * Gets the Java Class for an SCA property 
+     * @param propertyName - the property name
+     * @return - a Class object for the type of the property
+     */
+    public Class getPropertyClass(String propertyName) {
+        return propertyMap.get(propertyName);
+    }
+
+    @Override
+    public List<Service> getServices() {
+        return componentType.getServices();
+    }
+
+    @Override
+    public List<Reference> getReferences() {
+        return componentType.getReferences();
+    }
+
+    @Override
+    public List<Property> getProperties() {
+        return componentType.getProperties();
+    }
+}
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringImplementationProcessor.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringImplementationProcessor.java
new file mode 100644
index 0000000000..cd2f381937
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/SpringImplementationProcessor.java
@@ -0,0 +1,229 @@
+/*
+ * 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.spring;
+
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+
+import javax.xml.namespace.QName;
+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.ComponentType;
+import org.apache.tuscany.sca.assembly.xml.Constants;
+import org.apache.tuscany.sca.assembly.xml.PolicyAttachPointProcessor;
+import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
+import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
+import org.apache.tuscany.sca.contribution.processor.ContributionWriteException;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory;
+import org.apache.tuscany.sca.implementation.spring.xml.SpringXMLComponentTypeLoader;
+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.apache.tuscany.sca.policy.PolicyFactory;
+
+/**
+ * SpringArtifactProcessor is responsible for processing the XML of an <implementation.spring.../>
+ * element in an SCA SCDL file.
+ * 
+ * @version $Rev: 511195 $ $Date: 2007-02-24 02:29:46 +0000 (Sat, 24 Feb 2007) $ 
+ */
+public class SpringImplementationProcessor implements StAXArtifactProcessor<SpringImplementation> {
+
+    private static final String LOCATION = "location";
+    private static final String IMPLEMENTATION_SPRING = "implementation.spring";
+    private static final QName IMPLEMENTATION_SPRING_QNAME = new QName(Constants.SCA10_NS, IMPLEMENTATION_SPRING);
+    private static final String MSG_LOCATION_MISSING = "Reading implementation.spring - location attribute missing";
+
+    private AssemblyFactory assemblyFactory;
+    private JavaInterfaceFactory javaFactory;
+    private JavaImplementationFactory javaImplementationFactory;
+    private PolicyFactory policyFactory;
+    private PolicyAttachPointProcessor policyProcessor;
+    private Monitor monitor;
+    
+    public SpringImplementationProcessor(FactoryExtensionPoint modelFactories, Monitor monitor) {
+        this.assemblyFactory = modelFactories.getFactory(AssemblyFactory.class);
+        this.javaFactory = modelFactories.getFactory(JavaInterfaceFactory.class);
+        this.javaImplementationFactory = modelFactories.getFactory(JavaImplementationFactory.class);
+        this.policyFactory = modelFactories.getFactory(PolicyFactory.class);
+        this.policyProcessor = new PolicyAttachPointProcessor(policyFactory);
+        this.monitor = monitor;
+    }
+    
+    /**
+     * Report a exception.
+     * 
+     * @param problems
+     * @param message
+     * @param model
+     */
+    private void error(String message, Object model, Exception ex) {
+    	 if (monitor != null) {
+	        Problem problem = monitor.createProblem(this.getClass().getName(), "impl-spring-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 = monitor.createProblem(this.getClass().getName(), "impl-spring-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
+	        monitor.problem(problem);
+    	 }
+    }
+
+    /*
+     * Read the XML and parse out the attributes.
+     * 
+     * <implementation.spring.../> has a single required attribute:
+     * "location" - which is the target URI of of an archive file or a directory that contains the Spring
+     * application context files.
+     * If the resource identified by the location attribute is an archive file, then the file 
+     * META-INF/MANIFEST.MF is read from the archive. 
+     * If the location URI identifies a directory, then META-INF/MANIFEST.MF must exist
+     * underneath that directory. 
+     * If the manifest file contains a header "Spring-Context" of the format:
+     *    Spring-Context ::= path ( ';' path )*
+     *    
+     * Where path is a relative path with respect to the location URI, then the set of paths 
+     * specified in the header identify the context configuration files. 
+     * If there is no MANIFEST.MF file or no Spring-Context header within that file, 
+     * then the default behaviour is to build an application context using all the *.xml files 
+     * in the METAINF/spring directory.
+     */
+    public SpringImplementation read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+
+        // Create the Spring implementation
+        SpringImplementation springImplementation = null;
+
+        // Read the location attribute for the spring implementation
+        String springLocation = reader.getAttributeValue(null, LOCATION);
+        if (springLocation != null) {
+        	springImplementation = new SpringImplementation();
+        	springImplementation.setLocation(springLocation);
+        	springImplementation.setUnresolved(true);
+            processComponentType(springImplementation);
+        } else {
+        	error("LocationAttributeMissing", reader);
+            //throw new ContributionReadException(MSG_LOCATION_MISSING);
+        }
+
+        // Skip to end element
+        while (reader.hasNext()) {
+            if (reader.next() == END_ELEMENT && IMPLEMENTATION_SPRING_QNAME.equals(reader.getName())) {
+                break;
+            }
+        } // end while
+
+        return springImplementation;
+    } // end read
+
+    /*
+     * Handles the component type for the Spring implementation
+     * @param springImplementation - a Spring implementation.  The component type information
+     * is created for this implementation
+     *  
+     */
+    private void processComponentType(SpringImplementation springImplementation) {
+
+        // Create a ComponentType and mark it unresolved
+        ComponentType componentType = assemblyFactory.createComponentType();
+        componentType.setUnresolved(true);
+        springImplementation.setComponentType(componentType);
+    } // end processComponentType
+
+    /*
+     * Write out the XML representation of the Spring implementation
+     * <implementation.spring location="..." />
+     */
+    public void write(SpringImplementation springImplementation, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+
+        // Write <implementation.spring>
+        policyProcessor.writePolicyPrefixes(springImplementation, writer);
+        writer.writeStartElement(Constants.SCA10_NS, IMPLEMENTATION_SPRING);
+        policyProcessor.writePolicyAttributes(springImplementation, writer);
+        
+        if (springImplementation.getLocation() != null) {
+            writer.writeAttribute(LOCATION, springImplementation.getLocation());
+        }
+
+        writer.writeEndElement();
+
+    } // end write
+
+    /**
+     * Resolves the Spring implementation - loads the Spring application-context XML and
+     * derives the spring implementation componentType from it
+     */
+    public void resolve(SpringImplementation springImplementation, ModelResolver resolver)
+        throws ContributionResolveException {
+    	
+    	if (springImplementation == null)
+    		return;
+
+        /* Load the Spring component type by reading the Spring application context */
+        SpringXMLComponentTypeLoader springLoader =
+            new SpringXMLComponentTypeLoader(assemblyFactory, javaFactory, javaImplementationFactory, policyFactory);
+        try {
+            // Load the Spring Implementation information from its application context file...
+            springLoader.load(springImplementation);
+        } catch (ContributionReadException e) {
+        	ContributionResolveException ce = new ContributionResolveException(e);
+        	error("ContributionResolveException", resolver, ce);
+            throw ce;
+        }
+
+        ComponentType ct = springImplementation.getComponentType();
+        if (ct.isUnresolved()) {
+            // If the introspection fails to resolve, try to find a side file...
+            ComponentType componentType = resolver.resolveModel(ComponentType.class, ct);
+            if (componentType.isUnresolved()) {
+            	error("UnableToResolveComponentType", resolver);
+                //throw new ContributionResolveException("SpringArtifactProcessor: unable to resolve componentType for Spring component");             
+            } else {
+                springImplementation.setComponentType(componentType);
+                springImplementation.setUnresolved(false);
+           }            
+   
+        } // end if
+
+    } // end method resolve
+
+    public QName getArtifactType() {
+        return IMPLEMENTATION_SPRING_QNAME;
+    }
+
+    public Class<SpringImplementation> getModelType() {
+        return SpringImplementation.class;
+    }
+
+} // end class SpringArtifactProcessor
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/Constants.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/Constants.java
new file mode 100644
index 0000000000..92f980fdfe
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/Constants.java
@@ -0,0 +1,64 @@
+/*

+ * 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.spring.xml;

+

+import javax.xml.namespace.QName;

+

+/**

+ * Constants used in Spring Application Context XML files.

+ */

+public interface Constants {

+    

+    String SCA_NS = "http://www.springframework.org/schema/sca";

+    String SPRING_NS = "http://www.springframework.org/schema/beans";

+    

+    String PROPERTY = "property";

+    QName SCAPROPERTY_ELEMENT = new QName(SCA_NS, PROPERTY);

+    QName PROPERTY_ELEMENT = new QName(SPRING_NS, PROPERTY);

+    

+    String SERVICE = "service";

+    QName SERVICE_ELEMENT = new QName(SCA_NS, SERVICE);

+    

+    String REFERENCE = "reference";

+    QName REFERENCE_ELEMENT = new QName(SCA_NS, REFERENCE);

+    

+    String BEANS = "beans";

+    QName BEANS_ELEMENT = new QName(SPRING_NS, BEANS);

+    

+    String IMPORT = "import";

+    QName IMPORT_ELEMENT = new QName(SPRING_NS, IMPORT);

+    

+    String BEAN = "bean";

+    QName BEAN_ELEMENT = new QName(SPRING_NS, BEAN);

+    

+    String CONSTRUCTORARG = "constructor-arg";

+    QName CONSTRUCTORARG_ELEMENT = new QName(SPRING_NS, CONSTRUCTORARG);

+    

+    String LIST = "list";

+    QName LIST_ELEMENT = new QName(SPRING_NS, LIST); 

+    

+    String VALUE = "value";

+    QName VALUE_ELEMENT = new QName(SPRING_NS, VALUE);

+    

+    String REF = "ref";

+    QName REF_ELEMENT = new QName(SPRING_NS, REF);

+

+    String APPLICATION_CONTEXT = "application-context.xml";

+}

diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringBeanElement.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringBeanElement.java
new file mode 100644
index 0000000000..f9a9fee58f
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringBeanElement.java
@@ -0,0 +1,67 @@
+/*
+ * 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.spring.xml;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Represents a <bean> element in a Spring application-context
+ * - this has id and className attributes
+ * - plus zero or more property elements as children
+ *
+ * @version $Rev: 512919 $ $Date: 2007-02-28 19:32:56 +0000 (Wed, 28 Feb 2007) $
+ */
+public class SpringBeanElement {
+
+    private String id;
+    private String className;
+    private List<SpringPropertyElement> properties = new ArrayList<SpringPropertyElement>();
+    private List<SpringConstructorArgElement> constructorargs = new ArrayList<SpringConstructorArgElement>();
+
+    public SpringBeanElement(String id, String className) {
+        this.id = id;
+        this.className = className;
+    }
+
+    public String getClassName() {
+        return className;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public List<SpringPropertyElement> getProperties() {
+        return properties;
+    }
+
+    public void addProperty(SpringPropertyElement property) {
+        properties.add(property);
+    }
+    
+    public List<SpringConstructorArgElement> getCustructorArgs() {
+        return constructorargs;
+    }
+
+    public void addCustructorArgs(SpringConstructorArgElement args) {
+        constructorargs.add(args);
+    }
+
+} // end class SpringBeanElement
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringBeanIntrospector.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringBeanIntrospector.java
new file mode 100644
index 0000000000..f142b429b3
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringBeanIntrospector.java
@@ -0,0 +1,102 @@
+/*
+ * 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.spring.xml;
+
+import java.util.Map;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.ComponentType;
+import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
+import org.apache.tuscany.sca.implementation.java.IntrospectionException;
+import org.apache.tuscany.sca.implementation.java.JavaElementImpl;
+import org.apache.tuscany.sca.implementation.java.JavaImplementation;
+import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+import org.apache.tuscany.sca.policy.PolicyFactory;
+
+/**
+ * Provides introspection functions for Spring beans
+ * This version leans heavily on the implementation-java classes
+ *
+ * @version $Rev: 512919 $ $Date: 2007-02-28 19:32:56 +0000 (Wed, 28 Feb 2007) $
+ */
+public class SpringBeanIntrospector {
+
+    private JavaImplementationFactory javaImplementationFactory;
+
+    /**
+     * The constructor sets up the various visitor elements that will be used to introspect
+     * the Spring bean and extract SCA information.
+     *
+     * @param assemblyFactory The Assembly Factory to use
+     * @param javaFactory The Java Interface Factory to use
+     * @param policyFactory The Policy Factory to use.
+     */
+    public SpringBeanIntrospector(AssemblyFactory assemblyFactory,
+                                  JavaInterfaceFactory javaFactory,
+                                  JavaImplementationFactory javaImplementationFactory,
+                                  PolicyFactory policyFactory) {
+
+        this.javaImplementationFactory = javaImplementationFactory;
+
+    } // end constructor 
+
+    /**
+     * Introspect a Spring Bean and extract the features important to SCA
+     * @param beanClass the Spring Bean class to introspect
+     * @param componentType the componentType that is filled in through the introspection
+     * process (assumed empty on invocation, filled on return
+     * @return a Map of property names to JavaElementImpl
+     * @throws ContributionResolveException - if there was a problem resolving the
+     * Spring Bean or its componentType
+     *
+     */
+    public Map<String, JavaElementImpl> introspectBean(Class<?> beanClass, ComponentType componentType)
+        throws ContributionResolveException {
+
+        if (componentType == null)
+            throw new ContributionResolveException("Introspect Spring bean: supplied componentType is null");
+
+        // Create a Java implementation ready for the introspection
+        JavaImplementation javaImplementation = javaImplementationFactory.createJavaImplementation();
+
+        try {
+            // Introspect the bean...the results of the introspection are placed into the Java implementation
+            javaImplementationFactory.createJavaImplementation(javaImplementation, beanClass);
+
+            // Extract the services, references & properties found through introspection
+            // put the services, references and properties into the component type
+            componentType.getServices().addAll(javaImplementation.getServices());
+            componentType.getReferences().addAll(javaImplementation.getReferences());
+            componentType.getProperties().addAll(javaImplementation.getProperties());
+        } catch (IntrospectionException e) {
+            throw new ContributionResolveException(e);
+        } // end try
+
+        //List<Service> services = javaImplementation.getServices();
+        //for (Service service : services) {
+            //String name = service.getName();
+            //System.out.println("Spring Bean: found service with name: " + name);
+        //} // end for
+
+        return javaImplementation.getPropertyMembers();
+
+    } // end method introspectBean
+
+} // end class SpringBeanIntrospector
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringConstructorArgElement.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringConstructorArgElement.java
new file mode 100644
index 0000000000..57f4a26ba3
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringConstructorArgElement.java
@@ -0,0 +1,60 @@
+/*

+ * 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.spring.xml;

+

+import java.util.ArrayList;

+import java.util.List;

+

+/**

+ * Represents a <constructor-arg> element in a Spring application-context

+ * - this has ref attribute

+ * 

+ * @version $Rev: 512919 $ $Date: 2007-02-28 19:32:56 +0000 (Wed, 28 Feb 2007) $

+ */

+public class SpringConstructorArgElement {

+    

+    private String ref;

+    private String type;

+    private List<String> values = new ArrayList<String>();

+

+    public SpringConstructorArgElement(String ref, String type) {

+        this.ref = ref;

+        this.type = type;

+    }

+    

+    public String getType() {

+        return this.type;

+    }

+    

+    public String getRef() {

+        return this.ref;

+    }

+    

+    public void setRef(String ref) {

+        this.ref = ref;

+    }

+    

+    public List<String> getValues() {

+        return this.values;

+    }

+

+    public void addValue(String value) {

+        this.values.add(value);

+    }

+}

diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringPropertyElement.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringPropertyElement.java
new file mode 100644
index 0000000000..39e1286f32
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringPropertyElement.java
@@ -0,0 +1,61 @@
+/*
+ * 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.spring.xml;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Represents a <property> element in a Spring application-context
+ * - this has name and ref attributes
+ * 
+ * @version $Rev: 512919 $ $Date: 2007-02-28 19:32:56 +0000 (Wed, 28 Feb 2007) $
+ */
+public class SpringPropertyElement {
+
+    private String name;
+    private String ref;
+    private List<String> values = new ArrayList<String>();
+
+    public SpringPropertyElement(String name, String ref) {
+        this.name = name;
+        this.ref = ref;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getRef() {
+        return ref;
+    }
+    
+    public void setRef(String ref) {
+        this.ref = ref;
+    }
+    
+    public List<String> getProperties() {
+        return values;
+    }
+
+    public void addProperty(String value) {
+        values.add(value);
+    }
+
+} // end class SpringPropertyElement
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAPropertyElement.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAPropertyElement.java
new file mode 100644
index 0000000000..2f37ab6504
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAPropertyElement.java
@@ -0,0 +1,52 @@
+/*
+ * 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.spring.xml;
+
+/**
+ * Represents an <sca:property> element in a Spring application-context
+ * - this has name and type attributes
+ * @version $Rev: 511195 $ $Date: 2007-02-24 02:29:46 +0000 (Sat, 24 Feb 2007) $ 
+ */
+public class SpringSCAPropertyElement {
+
+    private String name;
+    private String type;
+
+    public SpringSCAPropertyElement(String name, String type) {
+        this.name = name;
+        this.type = type;
+    }
+    
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+    
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+} // end class SpringPropertyElement
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAReferenceElement.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAReferenceElement.java
new file mode 100644
index 0000000000..b3f45415fd
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAReferenceElement.java
@@ -0,0 +1,54 @@
+/*
+ * 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.spring.xml;
+
+/**
+ * Represents a <sca:reference> element in a Spring application-context
+ * - this has id and className attributes
+ * - plus zero or more property elements as children
+ *
+ * @version $Rev: 512919 $ $Date: 2007-02-28 19:32:56 +0000 (Wed, 28 Feb 2007) $
+ */
+public class SpringSCAReferenceElement {
+
+    private String name;
+    private String type;
+
+    public SpringSCAReferenceElement(String name, String type) {
+        this.name = name;
+        this.type = type;
+    }
+    
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+    
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+} // end class SpringSCAReferenceElement
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAServiceElement.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAServiceElement.java
new file mode 100644
index 0000000000..2eb5686270
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringSCAServiceElement.java
@@ -0,0 +1,64 @@
+/*
+ * 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.spring.xml;
+
+/**
+ * Represents a <sca:service> element in a Spring application-context
+ * - this has id and className attributes
+ * - plus zero or more property elements as children
+ *
+ * @version $Rev: 512919 $ $Date: 2007-02-28 19:32:56 +0000 (Wed, 28 Feb 2007) $
+ */
+public class SpringSCAServiceElement {
+
+    private String name;
+    private String type;
+    private String target;
+
+    public SpringSCAServiceElement(String name, String type, String target) {
+        this.name = name;
+        this.type = type;
+        this.target = target;
+    }
+    
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+    
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getType() {
+        return type;
+    }
+    
+    public void setTarget(String target) {
+        this.target = target;
+    }
+
+    public String getTarget() {
+        return target;
+    }
+
+} // end class SpringSCAServiceElement
diff --git a/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringXMLComponentTypeLoader.java b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringXMLComponentTypeLoader.java
new file mode 100644
index 0000000000..41d529a3d9
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/java/org/apache/tuscany/sca/implementation/spring/xml/SpringXMLComponentTypeLoader.java
@@ -0,0 +1,637 @@
+/*
+ * 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.spring.xml;
+
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.jar.Attributes;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+import java.util.jar.Manifest;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.ComponentType;
+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.contribution.processor.ContributionReadException;
+import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
+import org.apache.tuscany.sca.implementation.java.JavaElementImpl;
+import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory;
+import org.apache.tuscany.sca.implementation.spring.SpringImplementation;
+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.interfacedef.util.JavaXMLMapper;
+import org.apache.tuscany.sca.policy.PolicyFactory;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.UrlResource;
+
+/**
+ * Introspects a Spring XML application-context configuration file to create <implementation-spring../>
+ * component type information. 
+ * 
+ *
+ * @version $Rev: 512919 $ $Date: 2007-02-28 19:32:56 +0000 (Wed, 28 Feb 2007) $
+ */
+public class SpringXMLComponentTypeLoader {
+
+    private AssemblyFactory assemblyFactory;
+    private JavaInterfaceFactory javaFactory;
+    private ClassLoader cl;
+
+    private SpringBeanIntrospector beanIntrospector;
+
+    public SpringXMLComponentTypeLoader(AssemblyFactory assemblyFactory,
+                                        JavaInterfaceFactory javaFactory,
+                                        JavaImplementationFactory javaImplementationFactory,
+                                        PolicyFactory policyFactory) {
+        super();
+        this.assemblyFactory = assemblyFactory;
+        this.javaFactory = javaFactory;
+        beanIntrospector =
+            new SpringBeanIntrospector(assemblyFactory, javaFactory, javaImplementationFactory, policyFactory);
+    }
+
+    protected Class<SpringImplementation> getImplementationClass() {
+        return SpringImplementation.class;
+    }
+
+    /**
+     * Base method which loads the component type from the application-context attached to the 
+     * Spring implementation
+     * 
+     */
+    public void load(SpringImplementation implementation) throws ContributionReadException {
+        //System.out.println("Spring TypeLoader - load method start");
+        ComponentType componentType = implementation.getComponentType();
+        /* Check that there is a component type object already set	*/
+        if (componentType == null) {
+            throw new ContributionReadException("SpringXMLLoader load: implementation has no ComponentType object");
+        }
+        if (componentType.isUnresolved()) {
+            /* Fetch the location of the application-context file from the implementation */
+            loadFromXML(implementation);
+            if (!componentType.isUnresolved())
+                implementation.setUnresolved(false);
+        } // end if
+        //System.out.println("Spring TypeLoader - load method complete");
+    } // end method load
+
+    /**
+     * Method which fills out the component type for a Spring implementation by reading the 
+     * Spring application-context.xml file.
+     * 
+     * @param implementation SpringImplementation into which to load the component type information
+     * @throws ContributionReadException Failed to read the contribution
+     */
+    private void loadFromXML(SpringImplementation implementation) throws ContributionReadException {
+        XMLStreamReader reader;
+        List<SpringBeanElement> beans = new ArrayList<SpringBeanElement>();
+        List<SpringSCAServiceElement> services = new ArrayList<SpringSCAServiceElement>();
+        List<SpringSCAReferenceElement> references = new ArrayList<SpringSCAReferenceElement>();
+        List<SpringSCAPropertyElement> scaproperties = new ArrayList<SpringSCAPropertyElement>();        
+
+        Resource resource;
+
+        String location = implementation.getLocation();
+
+        try {
+            // FIXME - is the ContextClassLoader the right place to start the search?
+            cl = Thread.currentThread().getContextClassLoader();
+
+            resource = getApplicationContextResource(location, cl);
+            implementation.setResource(resource);
+            // The URI is used to uniquely identify the Implementation
+            implementation.setURI(resource.getURL().toString());
+            // FIXME - need a better way to handle the XMLInputFactory than allocating a new one every time
+            XMLInputFactory xmlFactory = XMLInputFactory.newInstance();
+            reader = xmlFactory.createXMLStreamReader(resource.getInputStream());
+
+            // System.out.println("Spring TypeLoader - starting to read context file");            
+            readBeanDefinition(reader, beans, services, references, scaproperties);            
+
+        } catch (IOException e) {
+            throw new ContributionReadException(e);
+        } catch (XMLStreamException e) {
+            throw new ContributionReadException(e);
+        }
+
+        /* At this point, the complete application-context.xml file has been read and its contents  */
+        /* stored in the lists of beans, services, references.  These are now used to generate      */
+        /* the implied componentType for the application context								    */
+        generateComponentType(implementation, beans, services, references, scaproperties);
+
+        return;
+    } // end method loadFromXML    
+    
+    /**
+     * Method which returns the XMLStreamReader for the Spring application-context.xml file
+     * specified in the location attribute
+     */
+    private XMLStreamReader getApplicationContextReader (String location) throws ContributionReadException {
+        
+        try {
+            // FIXME - is the ContextClassLoader the right place to start the search?
+            cl = Thread.currentThread().getContextClassLoader();    
+            Resource resource = getApplicationContextResource(location, cl);
+            // FIXME - need a better way to handle the XMLInputFactory than allocating a new one every time
+            XMLInputFactory xmlFactory = XMLInputFactory.newInstance();
+            XMLStreamReader reader = xmlFactory.createXMLStreamReader(resource.getInputStream());
+            return reader;
+        } catch (IOException e) {
+            throw new ContributionReadException(e);
+        } catch (XMLStreamException e) {
+            throw new ContributionReadException(e);
+        }
+    }    
+    
+    /**
+     * Method which reads the bean definitions from Spring application-context.xml file and identifies
+     * the defined beans, properties, services and references     
+     */
+    private void readBeanDefinition(XMLStreamReader reader, 
+            List<SpringBeanElement> beans,
+            List<SpringSCAServiceElement> services,
+            List<SpringSCAReferenceElement> references,
+            List<SpringSCAPropertyElement> scaproperties) throws ContributionReadException {
+        
+        SpringBeanElement bean = null;
+        SpringPropertyElement property = null;
+        SpringConstructorArgElement constructorArg = null;
+        
+        try {
+            boolean completed = false;
+            while (!completed) {
+                switch (reader.next()) {
+                    case START_ELEMENT:
+                        QName qname = reader.getName();
+                        //System.out.println("Spring TypeLoader - found element with name: " + qname.toString());
+                        if (Constants.IMPORT_ELEMENT.equals(qname)) {
+                        	//FIXME - put the sequence of code below which gets the ireader into a subsidiary method
+                            String location = reader.getAttributeValue(null, "resource");
+                            if (location != null) {
+                                XMLStreamReader ireader = getApplicationContextReader(location);
+                                // Read the bean definition for the identified imported resource
+                                readBeanDefinition(ireader, beans, services, references, scaproperties);
+                            }
+                        } else if (Constants.SERVICE_ELEMENT.equals(qname)) {
+                            SpringSCAServiceElement service =
+                                new SpringSCAServiceElement(reader.getAttributeValue(null, "name"), reader
+                                    .getAttributeValue(null, "type"), reader.getAttributeValue(null, "target"));
+                            services.add(service);
+                        } else if (Constants.REFERENCE_ELEMENT.equals(qname)) {
+                            SpringSCAReferenceElement reference =
+                                new SpringSCAReferenceElement(reader.getAttributeValue(null, "name"), reader
+                                    .getAttributeValue(null, "type"));
+                            references.add(reference);
+                        } else if (Constants.SCAPROPERTY_ELEMENT.equals(qname)) {
+                            SpringSCAPropertyElement scaproperty =
+                                new SpringSCAPropertyElement(reader.getAttributeValue(null, "name"), reader
+                                    .getAttributeValue(null, "type"));
+                            scaproperties.add(scaproperty);
+                        } else if (Constants.BEAN_ELEMENT.equals(qname)) {
+                            bean = new SpringBeanElement(reader.getAttributeValue(null, "id"), reader
+                                    .getAttributeValue(null, "class"));
+                            //beans.add(bean);
+                        } else if (Constants.PROPERTY_ELEMENT.equals(qname)) {
+                            property = new SpringPropertyElement(reader.getAttributeValue(null, "name"), reader
+                                    .getAttributeValue(null, "ref"));
+                            //bean.addProperty(property);
+                        } else if (Constants.CONSTRUCTORARG_ELEMENT.equals(qname)) {
+                            constructorArg = new SpringConstructorArgElement(reader.getAttributeValue(null, "ref"), 
+                                    reader.getAttributeValue(null, "type"));                            
+                        } else if (Constants.REF_ELEMENT.equals(qname)) {
+                            String ref = reader.getAttributeValue(null, "bean");
+                            // Check if the parent element is a property 
+                            if (property != null) property.setRef(ref);
+                            // Check if the parent element is a constructor-arg
+                            if (constructorArg != null) constructorArg.setRef(ref);
+                        } else if (Constants.VALUE_ELEMENT.equals(qname)) {
+                            String value = reader.getElementText();
+                            // Check if the parent element is a constructor-arg
+                            if (constructorArg != null) {
+                                constructorArg.addValue(value);                            
+                                // Identify the XML resource specified for the constructor-arg element
+                                if ((value.indexOf(".xml") != -1)) {
+                                    if ((bean.getClassName().indexOf(".ClassPathXmlApplicationContext") != -1) ||
+                                        (bean.getClassName().indexOf(".FileSystemXmlApplicationContext") != -1)) {                                    
+                                        XMLStreamReader creader = getApplicationContextReader(value);
+                                        // Read the bean definition for the constructor-arg resources
+                                        readBeanDefinition(creader, beans, services, references, scaproperties);
+                                    }
+                                }
+                            }
+                        } // end if
+                        break;
+                    case END_ELEMENT:
+                        if (Constants.BEANS_ELEMENT.equals(reader.getName())) {
+                            //System.out.println("Spring TypeLoader - finished read of context file");
+                            completed = true;
+                            break;
+                        } else if (Constants.BEAN_ELEMENT.equals(reader.getName())) {
+                            beans.add(bean);
+                            bean = null;
+                        } else if (Constants.PROPERTY_ELEMENT.equals(reader.getName())) {
+                            bean.addProperty(property);
+                            property = null;
+                        } else if (Constants.CONSTRUCTORARG_ELEMENT.equals(reader.getName())) {
+                            bean.addCustructorArgs(constructorArg);
+                            constructorArg = null;
+                        } // end if
+                } // end switch
+            } // end while
+        } catch (XMLStreamException e) {
+            throw new ContributionReadException(e);
+        }
+    }
+
+    /**
+     * Generates the Spring implementation component type from the configuration contained in the
+     * lists of beans, services, references and scaproperties derived from the application context
+     */
+    private void generateComponentType(SpringImplementation implementation,
+                                       List<SpringBeanElement> beans,
+                                       List<SpringSCAServiceElement> services,
+                                       List<SpringSCAReferenceElement> references,
+                                       List<SpringSCAPropertyElement> scaproperties) throws ContributionReadException {
+        /*
+         * 1. Each service becomes a service in the component type
+         * 2. Each reference becomes a reference in the component type
+         * 3. IF there are no explicit service elements, each bean becomes a service
+         * 4. Each bean property which is a reference not pointing at another bean in the 
+         *    application context becomes a reference unless it is pointing at one of the references
+         * 5. Each scaproperty becomes a property in the component type
+         * 6. Each bean property which is not a reference and which is not pointing 
+         *    at another bean in the application context becomes a property in the component type
+         */
+
+        ComponentType componentType = implementation.getComponentType();
+
+        try {
+            // Deal with the services first....												
+            Iterator<SpringSCAServiceElement> its = services.iterator();
+            while (its.hasNext()) {
+                SpringSCAServiceElement serviceElement = its.next();
+                Class<?> interfaze = cl.loadClass(serviceElement.getType());
+                Service theService = createService(interfaze, serviceElement.getName());
+                componentType.getServices().add(theService);
+                // Add this service to the Service / Bean map
+                String beanName = serviceElement.getTarget();
+                for (SpringBeanElement beanElement : beans) {
+                    if (beanName.equals(beanElement.getId())) {
+                        implementation.setBeanForService(theService, beanElement);
+                    }
+                } // end for
+            } // end while
+
+            // Next handle the references
+            Iterator<SpringSCAReferenceElement> itr = references.iterator();
+            while (itr.hasNext()) {
+                SpringSCAReferenceElement referenceElement = itr.next();
+                Class<?> interfaze = cl.loadClass(referenceElement.getType());
+                Reference theReference = createReference(interfaze, referenceElement.getName());
+                componentType.getReferences().add(theReference);
+            } // end while
+
+            // Finally deal with the beans
+            Iterator<SpringBeanElement> itb;
+            // If there are no explicit service elements, then expose all the beans
+            if (services.isEmpty()) {
+                itb = beans.iterator();
+                // Loop through all the beans found
+                while (itb.hasNext()) {
+                    SpringBeanElement beanElement = itb.next();
+                    // Load the Spring bean class
+                    Class<?> beanClass = cl.loadClass(beanElement.getClassName());
+                    // Introspect the bean 
+                    ComponentType beanComponentType = assemblyFactory.createComponentType();
+                    beanIntrospector.introspectBean(beanClass, beanComponentType);
+                    // Get the service interface defined by this Spring Bean and add to
+                    // the component type of the Spring Assembly
+                    List<Service> beanServices = beanComponentType.getServices();
+                    componentType.getServices().addAll(beanServices);
+                    // Add these services to the Service / Bean map
+                    for (Service beanService : beanServices) {
+                        implementation.setBeanForService(beanService, beanElement);
+                    }
+                } // end while
+            } // end if
+            // Now check to see if there are any more references from beans that are not satisfied
+            itb = beans.iterator();
+            while (itb.hasNext()) {
+                SpringBeanElement beanElement = itb.next();
+                boolean unresolvedProperties = false;
+                if (!beanElement.getProperties().isEmpty()) {
+                    // Scan through the properties
+                    Iterator<SpringPropertyElement> itp = beanElement.getProperties().iterator();
+                    while (itp.hasNext()) {
+                        SpringPropertyElement propertyElement = itp.next();
+                        if (propertyRefUnresolved(propertyElement.getRef(), beans, references, scaproperties)) {
+                            // This means an unresolved reference from the spring bean...
+                            unresolvedProperties = true;
+                        } // end if
+                    } // end while 
+                    // If there are unresolved properties, then find which ones are references
+                    if (unresolvedProperties) {
+                        Class<?> beanClass = cl.loadClass(beanElement.getClassName());
+                        // Introspect the bean 
+                        ComponentType beanComponentType = assemblyFactory.createComponentType();
+                        Map<String, JavaElementImpl> propertyMap =
+                            beanIntrospector.introspectBean(beanClass, beanComponentType);
+                        // Get the references by this Spring Bean and add the unresolved ones to
+                        // the component type of the Spring Assembly
+                        List<Reference> beanReferences = beanComponentType.getReferences();
+                        List<Property> beanProperties = beanComponentType.getProperties();
+                        itp = beanElement.getProperties().iterator();
+                        while (itp.hasNext()) {
+                            SpringPropertyElement propertyElement = itp.next();
+                            if (propertyRefUnresolved(propertyElement.getRef(), beans, references, scaproperties)) {
+                                boolean resolved = false;
+                                // This means an unresolved reference from the spring bean...add it to
+                                // the references for the Spring application context
+                                for (Reference reference : beanReferences) {
+                                    if (propertyElement.getName().equals(reference.getName())) {
+                                        // The name of the reference in this case is the string in
+                                        // the @ref attribute of the Spring property element, NOT the
+                                        // name of the field in the Spring bean....
+                                        reference.setName(propertyElement.getRef());
+                                        componentType.getReferences().add(reference);
+                                        resolved = true;
+                                    } // end if
+                                } // end for
+                                if (!resolved) {
+                                    // If the bean property is not already resolved as a reference
+                                    // then it must be an SCA property...
+                                    for (Property scaproperty : beanProperties) {
+                                        if (propertyElement.getName().equals(scaproperty.getName())) {
+                                            // The name of the reference in this case is the string in
+                                            // the @ref attribute of the Spring property element, NOT the
+                                            // name of the field in the Spring bean....
+                                            scaproperty.setName(propertyElement.getRef());
+                                            componentType.getProperties().add(scaproperty);
+                                            // Fetch and store the type of the property
+                                            implementation.setPropertyClass(scaproperty.getName(), propertyMap
+                                                .get(scaproperty.getName()).getType());
+                                            resolved = true;
+                                        } // end if
+                                    } // end for
+                                } // end if
+                            } // end if
+                        } // end while 
+                    } // end if
+                } // end if
+
+            } // end while
+
+            Iterator<SpringSCAPropertyElement> itsp = scaproperties.iterator();
+            while (itsp.hasNext()) {
+                SpringSCAPropertyElement scaproperty = itsp.next();
+                // Create a component type property if the SCA property element has a name
+                // and a type declared...
+                if (scaproperty.getType() != null && scaproperty.getName() != null) {
+                    Property theProperty = assemblyFactory.createProperty();
+                    theProperty.setName(scaproperty.getName());
+                    // Get the Java class and then an XSD element type for the property
+                    Class<?> propType = Class.forName(scaproperty.getType());
+                    theProperty.setXSDType(JavaXMLMapper.getXMLType(propType));
+                    componentType.getProperties().add(theProperty);
+                    // Remember the Java Class (ie the type) for this property
+                    implementation.setPropertyClass(theProperty.getName(), propType);
+                } // end if 
+            } // end while
+
+        } catch (ClassNotFoundException e) {
+            // Means that either an interface class, property class or a bean was not found
+            throw new ContributionReadException(e);
+        } catch (InvalidInterfaceException e) {
+            throw new ContributionReadException(e);
+        } catch (ContributionResolveException e) {
+
+        } // end try
+
+        // If we get here, the Spring assembly component type is resolved
+        componentType.setUnresolved(false);
+        implementation.setComponentType(componentType);
+        return;
+    } // end method generateComponentType
+
+    /*
+     * Determines whether a reference attribute of a Spring property element is resolved either
+     * by a bean in the application context or by an SCA reference element or by an SCA property
+     * element
+     * @param ref - a String containing the name of the reference - may be null
+     * @param beans - a List of SpringBean elements
+     * @param references - a List of SCA reference elements
+     * @return true if the property is not resolved, false if it is resolved
+     */
+    private boolean propertyRefUnresolved(String ref,
+                                          List<SpringBeanElement> beans,
+                                          List<SpringSCAReferenceElement> references,
+                                          List<SpringSCAPropertyElement> scaproperties) {
+        boolean unresolved = true;
+
+        if (ref != null) {
+            // Scan over the beans looking for a match
+            Iterator<SpringBeanElement> itb = beans.iterator();
+            while (itb.hasNext()) {
+                SpringBeanElement beanElement = itb.next();
+                // Does the bean name match the ref?
+                if (ref.equals(beanElement.getId())) {
+                    unresolved = false;
+                    break;
+                } // end if
+            } // end while
+            // Scan over the SCA reference elements looking for a match
+            if (unresolved) {
+                Iterator<SpringSCAReferenceElement> itr = references.iterator();
+                while (itr.hasNext()) {
+                    SpringSCAReferenceElement referenceElement = itr.next();
+                    if (ref.equals(referenceElement.getName())) {
+                        unresolved = false;
+                        break;
+                    } // end if
+                } // end while
+            } // end if
+            // Scan over the SCA property elements looking for a match
+            if (unresolved) {
+                Iterator<SpringSCAPropertyElement> itsp = scaproperties.iterator();
+                while (itsp.hasNext()) {
+                    SpringSCAPropertyElement propertyElement = itsp.next();
+                    if (ref.equals(propertyElement.getName())) {
+                        unresolved = false;
+                        break;
+                    } // end if
+                } // end while
+            } // end if
+        } else {
+            // In the case where ref = null, the property is not going to be a reference of any
+            // kind and can be ignored
+            unresolved = false;
+        } // end if
+
+        return unresolved;
+
+    } // end method propertyRefUnresolved
+
+    /**
+     * Gets hold of the application-context.xml file as a Spring resource
+     * @param locationAttr - the location attribute from the <implementation.spring../> element
+     * @param cl - the ClassLoader for the Spring implementation
+     */
+    protected Resource getApplicationContextResource(String locationAttr, ClassLoader cl)
+        throws ContributionReadException {
+        File manifestFile = null;
+        File appXmlFile;
+        File locationFile = null;
+        
+        URL url = cl.getResource(locationAttr);
+        if (url != null) {
+            String path = url.getPath();
+            locationFile = new File(path);            
+        } else {
+            throw new ContributionReadException(
+                    "SpringXMLLoader getApplicationContextResource: " + "unable to find resource file " 
+                        + locationAttr);
+        }
+
+        if (locationFile.isDirectory()) {
+            try {
+                manifestFile = new File(locationFile, "META-INF"+ File.separator +"MANIFEST.MF");
+                if (manifestFile.exists()) {
+                    Manifest mf = new Manifest(new FileInputStream(manifestFile));
+                    Attributes mainAttrs = mf.getMainAttributes();
+                    String appCtxPath = mainAttrs.getValue("Spring-Context");
+                    if (appCtxPath != null) {
+                        appXmlFile = new File(locationFile, appCtxPath);
+                        if (appXmlFile.exists()) {
+                            return new UrlResource(appXmlFile.toURL());
+                        }
+                    }
+                }
+                // no manifest-specified Spring context, use default
+                appXmlFile = new File(locationFile, "META-INF" + File.separator + "spring" 
+                                                        + File.separator + Constants.APPLICATION_CONTEXT);
+                if (appXmlFile.exists()) {
+                    return new UrlResource(appXmlFile.toURL());
+                }
+            } catch (IOException e) {
+                throw new ContributionReadException("Error reading manifest " + manifestFile);
+            }
+        } else {            
+            if (locationFile.isFile() && locationFile.getName().indexOf(".jar") < 0) {
+                return new UrlResource(url);
+            }
+            else {
+                try {
+                    JarFile jf = new JarFile(locationFile);
+                    JarEntry je;
+                    Manifest mf = jf.getManifest();
+                    if (mf != null) {
+                        Attributes mainAttrs = mf.getMainAttributes();
+                        String appCtxPath = mainAttrs.getValue("Spring-Context");
+                        if (appCtxPath != null) {
+                            je = jf.getJarEntry(appCtxPath);
+                            if (je != null) {
+                                // TODO return a Spring specific Resource type for jars
+                                return new UrlResource(new URL("jar:" + locationFile.toURI().toURL() + "!/" + appCtxPath));
+                            }
+                        }
+                    }
+                    je = jf.getJarEntry("META-INF" + File.separator + "spring" 
+                                                + File.separator + Constants.APPLICATION_CONTEXT);
+                    if (je != null) {
+                        return new UrlResource(new URL("jar:" + locationFile.toURI().toURL() + "!/" + Constants.APPLICATION_CONTEXT));
+                    }
+                } catch (IOException e) {
+                    // bad archive
+                    // TODO: create a more appropriate exception type
+                    throw new ContributionReadException(
+                                                        "SpringXMLLoader getApplicationContextResource: " + " IO exception reading context file.",
+                                                        e);
+                }
+            }
+        }
+
+        throw new ContributionReadException("SpringXMLLoader getApplicationContextResource: " 
+                                        + "META-INF/spring/" + Constants.APPLICATION_CONTEXT + "not found");
+    } // end method getApplicationContextResource
+
+    /**
+     * Creates a Service for the component type based on its name and Java interface
+     */
+    public Service createService(Class<?> interfaze, String name) throws InvalidInterfaceException {
+        Service service = assemblyFactory.createService();
+        JavaInterfaceContract interfaceContract = javaFactory.createJavaInterfaceContract();
+        service.setInterfaceContract(interfaceContract);
+
+        // Set the name for the service
+        service.setName(name);
+
+        // Set the call interface and, if present, the callback interface
+        JavaInterface callInterface = javaFactory.createJavaInterface(interfaze);
+        service.getInterfaceContract().setInterface(callInterface);
+        if (callInterface.getCallbackClass() != null) {
+            JavaInterface callbackInterface = javaFactory.createJavaInterface(callInterface.getCallbackClass());
+            service.getInterfaceContract().setCallbackInterface(callbackInterface);
+        }
+        return service;
+    } // end method createService
+
+    /**
+     * Creates a Reference for the component type based on its name and Java interface
+     */
+    private org.apache.tuscany.sca.assembly.Reference createReference(Class<?> interfaze, String name)
+        throws InvalidInterfaceException {
+        org.apache.tuscany.sca.assembly.Reference reference = assemblyFactory.createReference();
+        JavaInterfaceContract interfaceContract = javaFactory.createJavaInterfaceContract();
+        reference.setInterfaceContract(interfaceContract);
+
+        // Set the name of the reference to the supplied name and the multiplicity of the reference
+        // to 1..1 - for Spring implementations, this is the only multiplicity supported
+        reference.setName(name);
+        reference.setMultiplicity(Multiplicity.ONE_ONE);
+
+        // Set the call interface and, if present, the callback interface
+        JavaInterface callInterface = javaFactory.createJavaInterface(interfaze);
+        reference.getInterfaceContract().setInterface(callInterface);
+        if (callInterface.getCallbackClass() != null) {
+            JavaInterface callbackInterface = javaFactory.createJavaInterface(callInterface.getCallbackClass());
+            reference.getInterfaceContract().setCallbackInterface(callbackInterface);
+        }
+
+        return reference;
+    }
+} // end class SpringXMLComponentTypeLoader
diff --git a/java/sca/modules/implementation-spring/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor b/java/sca/modules/implementation-spring/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
new file mode 100644
index 0000000000..4b71cef6c4
--- /dev/null
+++ b/java/sca/modules/implementation-spring/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.spring.SpringImplementationProcessor;qname=http://www.osoa.org/xmlns/sca/1.0#implementation.spring,model=org.apache.tuscany.sca.implementation.spring.SpringImplementation
diff --git a/java/sca/modules/implementation-spring/src/main/resources/META-INF/spring.handlers b/java/sca/modules/implementation-spring/src/main/resources/META-INF/spring.handlers
new file mode 100644
index 0000000000..7f9a7b17b0
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/resources/META-INF/spring.handlers
@@ -0,0 +1 @@
+http\://www.springframework.org/schema/sca=org.apache.tuscany.sca.implementation.spring.ScaNamespaceHandler
diff --git a/java/sca/modules/implementation-spring/src/main/resources/META-INF/spring.schemas b/java/sca/modules/implementation-spring/src/main/resources/META-INF/spring.schemas
new file mode 100644
index 0000000000..249cc21c13
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/resources/META-INF/spring.schemas
@@ -0,0 +1 @@
+http\://www.osoa.org/xmlns/sca/1.0/spring-sca.xsd=org/springframework/sca/xml/spring-sca.xsd
diff --git a/java/sca/modules/implementation-spring/src/main/resources/impl-spring-validation-messages.properties b/java/sca/modules/implementation-spring/src/main/resources/impl-spring-validation-messages.properties
new file mode 100644
index 0000000000..6fce02664a
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/resources/impl-spring-validation-messages.properties
@@ -0,0 +1,23 @@
+#
+#
+#    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.
+#
+#
+LocationAttributeMissing = Reading implementation.spring - location attribute missing
+ContributionResolveException = ContributionResolveException occured due to:
+UnableToResolveComponentType = SpringArtifactProcessor: unable to resolve componentType for Spring component
\ No newline at end of file
diff --git a/java/sca/modules/implementation-spring/src/main/resources/org/springframework/sca/xml/spring-sca.xsd b/java/sca/modules/implementation-spring/src/main/resources/org/springframework/sca/xml/spring-sca.xsd
new file mode 100644
index 0000000000..e20f4e8158
--- /dev/null
+++ b/java/sca/modules/implementation-spring/src/main/resources/org/springframework/sca/xml/spring-sca.xsd
@@ -0,0 +1,99 @@
+<?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.    
+-->
+<xsd:schema xmlns="http://www.springframework.org/schema/sca" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+    attributeFormDefault="unqualified" elementFormDefault="qualified"
+    targetNamespace="http://www.springframework.org/schema/sca">
+
+    <xsd:element name="composite">
+        <xsd:complexType>
+            <xsd:attribute name="component" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+            <xsd:attribute name="sca-adapter-class" use="optional">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+        </xsd:complexType>
+    </xsd:element>
+
+    <xsd:element name="reference">
+        <xsd:complexType>
+            <xsd:attribute name="name" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+            <xsd:attribute name="type" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+            <xsd:attribute name="default" use="optional">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+        </xsd:complexType>
+    </xsd:element>
+
+    <xsd:element name="property">
+        <xsd:complexType>
+            <xsd:attribute name="id" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+            <xsd:attribute name="name" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+            <xsd:attribute name="type" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+        </xsd:complexType>
+    </xsd:element>
+
+    <xsd:element name="service">
+        <xsd:complexType>
+            <xsd:attribute name="name" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+            <xsd:attribute name="type" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+            <xsd:attribute name="target" use="required">
+                <xsd:simpleType>
+                    <xsd:restriction base="xsd:string" />
+                </xsd:simpleType>
+            </xsd:attribute>
+        </xsd:complexType>
+    </xsd:element>
+
+</xsd:schema>