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

16 files changed, 1082 insertions, 0 deletions

diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceExport.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceExport.java
new file mode 100644
index 0000000000..0bd30c19dd
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceExport.java
@@ -0,0 +1,46 @@
+/*
+ * 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.contribution.resource;
+
+import org.apache.tuscany.sca.contribution.Export;
+
+
+/**
+ * The representation of an resource export.
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface ResourceExport extends Export {
+
+    /**
+     * Get Resource URI that identifies the export.
+     * 
+     * @return The exported resource URI
+     */
+    String getURI();
+
+    /**
+     * Set Resource URI that identifies the export.
+     * 
+     * @param uri The exported resource URI
+     */
+    void setURI(String uri);
+    
+}
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceImport.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceImport.java
new file mode 100644
index 0000000000..07eac9d843
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceImport.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.contribution.resource;
+
+import org.apache.tuscany.sca.contribution.Import;
+
+/**
+ * The representation of an resource import.
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface ResourceImport extends Import {
+
+    /**
+     * Get the location used to resolve the definitions for this import
+     * 
+     * @return The import location
+     */
+    String getLocation();
+
+    /**
+     * Set the location used to resolve the definitions for this import
+     * 
+     * @param location The import location
+     */
+    void setLocation(String location);
+
+    /**
+     * Get URI that identifies the resource import
+     * 
+     * @return The URI
+     */
+    String getURI();
+
+    /**
+     * Set URI that identifies the resource import
+     * 
+     * @param uri The resource URI
+     */
+    void setURI(String uri);
+    
+}
\ No newline at end of file
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceImportExportFactory.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceImportExportFactory.java
new file mode 100644
index 0000000000..4119c344ce
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/ResourceImportExportFactory.java
@@ -0,0 +1,42 @@
+/*
+ * 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.contribution.resource;
+
+/**
+ * Base Resource import/export model factory
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface ResourceImportExportFactory {
+
+    /**
+     * Create a resource import model object
+     * 
+     * @return The new ResourceImport model object
+     */
+    ResourceImport createResourceImport();
+    
+    /**
+     * Create a resource export model object
+     * 
+     * @return The new ResourceExport model object
+     */
+    ResourceExport createResourceExport();
+}
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ArtifactModelResolver.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ArtifactModelResolver.java
new file mode 100644
index 0000000000..5c6bb5e245
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ArtifactModelResolver.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.contribution.resource.impl;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.tuscany.sca.contribution.Artifact;
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.Import;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.resource.ResourceImport;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+
+/**
+ * A Model Resolver for contribution artifacts.
+ *
+ * @version $Rev$ $Date$
+ */
+public class ArtifactModelResolver implements ModelResolver {
+    private Contribution contribution;
+    private Map<String, Artifact> map = new HashMap<String, Artifact>();
+    
+    public ArtifactModelResolver(Contribution contribution, FactoryExtensionPoint modelFactories) {
+    	this.contribution = contribution;
+    }
+
+    public void addModel(Object resolved) {
+    	Artifact artifact = (Artifact)resolved;
+        map.put(artifact.getURI(), artifact);
+    }
+    
+    public Object removeModel(Object resolved) {
+        return map.remove(((Artifact)resolved).getURI());
+    }
+    
+    public <T> T resolveModel(Class<T> modelClass, T unresolved) {
+
+    	// Get the artifact URI
+        String uri = ((Artifact)unresolved).getURI();
+        if (uri == null) {
+        	return (T)unresolved;
+        }
+        
+        // Lookup the artifact
+        Artifact resolved = (Artifact) map.get(uri);
+        if (resolved != null) {
+            return modelClass.cast(resolved);
+        } 
+        
+        // If not found, delegate the resolution to the imports (in this case based on the resource imports)
+        for (Import import_ : this.contribution.getImports()) {
+            if (import_ instanceof ResourceImport) {
+            	ResourceImport resourceImport = (ResourceImport)import_;
+            	//check the import location against the computed package name from the componentType URI
+                if (resourceImport.getURI().equals(uri)) {
+                    // Delegate the resolution to the import resolver
+                    resolved = resourceImport.getModelResolver().resolveModel(Artifact.class, (Artifact)unresolved);
+                    if (!resolved.isUnresolved()) {
+                        return modelClass.cast(resolved);
+                    }
+                }
+            }
+        }
+
+        return (T)unresolved;
+    }
+    
+}
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportImpl.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportImpl.java
new file mode 100644
index 0000000000..c2d525dfef
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportImpl.java
@@ -0,0 +1,58 @@
+/*
+ * 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.contribution.resource.impl;
+
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.resource.ResourceExport;
+
+/**
+ * The representation of an export for the contribution
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ResourceExportImpl implements ResourceExport {
+    /**
+     * The resource URI to be exported
+     */	
+    private String uri; 
+    
+    private ModelResolver modelResolver;
+    
+    protected ResourceExportImpl() {
+        super();
+    }
+    
+    public String getURI() {
+        return uri;
+    }
+
+    public void setURI(String uri) {
+        this.uri = uri;
+    }
+    
+    public ModelResolver getModelResolver() {
+        return modelResolver;
+    }
+    
+    public void setModelResolver(ModelResolver modelResolver) {
+        this.modelResolver = modelResolver;
+    }
+    
+}
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportModelResolver.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportModelResolver.java
new file mode 100644
index 0000000000..fd568e533d
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportModelResolver.java
@@ -0,0 +1,65 @@
+/*
+ * 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.contribution.resource.impl;
+
+import org.apache.tuscany.sca.contribution.Artifact;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.resource.ResourceExport;
+
+/**
+ * A model resolver for resource exports.
+ *
+ * @version $Rev$ $Date$
+ */
+public class ResourceExportModelResolver implements ModelResolver {
+
+    private ResourceExport export;
+    private ModelResolver resolver;
+    
+    public ResourceExportModelResolver(ResourceExport export, ModelResolver resolver) {
+        this.export = export;
+        this.resolver = resolver;
+    }
+    
+    public void addModel(Object resolved) {
+        throw new IllegalStateException();
+    }
+
+    public Object removeModel(Object resolved) {
+        throw new IllegalStateException();
+    }
+
+    public <T> T resolveModel(Class<T> modelClass, T unresolved) {
+        
+        // Filter based on the artifact URI
+        Artifact artifact = (Artifact)unresolved;
+        if (export.getURI().equals(artifact.getURI())) {
+            
+            // The artifact URI matches the exported URI, delegate to the
+            // contribution's resolver
+            return resolver.resolveModel(modelClass, unresolved);
+        } else {
+            
+            // The artifact URI is not exported, return the unresolved object
+            return unresolved;
+        }
+    }
+
+}
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportProcessor.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportProcessor.java
new file mode 100644
index 0000000000..f5f9fad167
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportProcessor.java
@@ -0,0 +1,141 @@
+/*
+ * 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.contribution.resource.impl;
+
+import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.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.contribution.resource.ResourceExport;
+import org.apache.tuscany.sca.contribution.resource.ResourceImportExportFactory;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.apache.tuscany.sca.monitor.Problem.Severity;
+
+/**
+ * Artifact processor for Resource export
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ResourceExportProcessor implements StAXArtifactProcessor<ResourceExport> {
+
+    private static final String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0";
+    private static final QName EXPORT_RESOURCE = new QName(SCA10_NS, "export.resource");
+    private static final String URI = "uri";
+    
+    private final ResourceImportExportFactory factory;
+    private final Monitor monitor;
+    
+    public ResourceExportProcessor(FactoryExtensionPoint modelFactories, Monitor monitor) {
+        this.factory = modelFactories.getFactory(ResourceImportExportFactory.class);
+        this.monitor = monitor;
+    }
+    
+    /**
+     * 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(), "contribution-resource-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
+	        monitor.problem(problem);
+    	 }
+     }
+
+    public QName getArtifactType() {
+        return EXPORT_RESOURCE;
+    }
+    
+    public Class<ResourceExport> getModelType() {
+        return ResourceExport.class;
+    }
+    
+    /**
+     * Process <export.resource uri=""/>
+     */
+    public ResourceExport read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+    	ResourceExport resourceExport = this.factory.createResourceExport();
+        QName element = null;
+        
+        while (reader.hasNext()) {
+            int event = reader.getEventType();
+            switch (event) {
+                case START_ELEMENT:
+                    element = reader.getName();
+                    
+                    // Read <export.resource>
+                    if (EXPORT_RESOURCE.equals(element)) {
+                        String uri = reader.getAttributeValue(null, URI);
+                        if (uri == null) {
+                        	error("AttributeURIMissing", reader);
+                            //throw new ContributionReadException("Attribute 'uri' is missing");
+                        } else
+                            resourceExport.setURI(uri);
+                    } 
+                    
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    if (EXPORT_RESOURCE.equals(reader.getName())) {
+                        return resourceExport;
+                    }
+                    break;        
+            }
+            
+            // Read the next element
+            if (reader.hasNext()) {
+                reader.next();
+            }
+        }
+        
+        return resourceExport;
+    }
+
+    public void write(ResourceExport resourceExport, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+        
+        // Write <export.resource>
+        writer.writeStartElement(EXPORT_RESOURCE.getNamespaceURI(), EXPORT_RESOURCE.getLocalPart());
+        
+        if (resourceExport.getURI() != null) {
+            writer.writeAttribute(URI, resourceExport.getURI());
+        }
+        
+        writer.writeEndElement();
+    }
+
+    public void resolve(ResourceExport resourceExport, ModelResolver resolver) throws ContributionResolveException {
+        
+        if (resourceExport.getURI() != null)
+            // Initialize the export's model resolver
+            resourceExport.setModelResolver(new ResourceExportModelResolver(resourceExport, resolver));
+    }
+}
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportExportFactoryImpl.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportExportFactoryImpl.java
new file mode 100644
index 0000000000..880f5f5786
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportExportFactoryImpl.java
@@ -0,0 +1,41 @@
+/*
+ * 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.contribution.resource.impl;
+
+import org.apache.tuscany.sca.contribution.resource.ResourceExport;
+import org.apache.tuscany.sca.contribution.resource.ResourceImport;
+import org.apache.tuscany.sca.contribution.resource.ResourceImportExportFactory;
+
+/**
+ * Resource Import/Export model factory implementation
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ResourceImportExportFactoryImpl implements ResourceImportExportFactory {
+
+    public ResourceImport createResourceImport() {
+        return new ResourceImportImpl();
+    }
+    
+    public ResourceExport createResourceExport() {
+        return new ResourceExportImpl();
+    }
+
+}
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportImpl.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportImpl.java
new file mode 100644
index 0000000000..cd33f1290f
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportImpl.java
@@ -0,0 +1,107 @@
+/*
+ * 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.contribution.resource.impl;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.Export;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.resource.ResourceExport;
+import org.apache.tuscany.sca.contribution.resource.ResourceImport;
+
+/**
+ * The representation of an import for the contribution
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ResourceImportImpl implements ResourceImport {
+    /**
+     * The resource URI to be imported
+     */
+    private String uri; 
+    
+	private ModelResolver modelResolver;
+    private List<Contribution> exportContributions;
+
+    /**
+     * Optional location URI pointing to a Contribution that exports the resource
+     */
+    private String location;
+
+    
+    protected ResourceImportImpl() {
+        super();
+    }
+    
+    public String getLocation() {
+        return location;
+    }
+
+    public void setLocation(String location) {
+        this.location = location;
+    }
+
+    public String getURI() {
+        return uri;
+    }
+
+    public void setURI(String uri) {
+        this.uri = uri;
+    }
+    
+    public ModelResolver getModelResolver() {
+        return modelResolver;
+    }
+    
+    public void setModelResolver(ModelResolver modelResolver) {
+        this.modelResolver = modelResolver;
+    }
+    
+    public List<Contribution> getExportContributions() {
+        return exportContributions;
+    }
+
+    public void setExportContributions(List<Contribution> contributions) {
+        this.exportContributions = contributions;
+    }
+
+    /**
+     * Match a ResourceImport to a given ResourceExport based on :
+     *    location is not provided
+     *    import and export resource URI match
+     */
+    public boolean match(Export export) {
+        if (export instanceof ResourceExport) {
+            if (this.getLocation() == null || this.getLocation().length() == 0) {
+                if (this.getURI().equals(((ResourceExport)export).getURI())) {
+                    return true;
+                }
+            }
+            
+        }
+        return false;
+    }
+    
+    @Override
+    public String toString() {
+        return String.valueOf(uri);
+    }
+}
diff --git a/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportProcessor.java b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportProcessor.java
new file mode 100644
index 0000000000..7fdb74e256
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportProcessor.java
@@ -0,0 +1,147 @@
+/*
+ * 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.contribution.resource.impl;
+
+import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.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.contribution.resource.ResourceImport;
+import org.apache.tuscany.sca.contribution.resource.ResourceImportExportFactory;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.apache.tuscany.sca.monitor.Problem.Severity;
+
+/**
+ * Artifact processor for Namespace import
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ResourceImportProcessor  implements StAXArtifactProcessor<ResourceImport> {
+    private static final String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0";
+    
+    private static final QName IMPORT_RESOURCE = new QName(SCA10_NS, "import.resource");
+
+    private static final String URI = "uri";
+    private static final String LOCATION = "location";
+    
+    private final ResourceImportExportFactory factory;
+    private final Monitor monitor;
+    
+    public ResourceImportProcessor(FactoryExtensionPoint modelFactories, Monitor monitor) {
+        this.factory = modelFactories.getFactory(ResourceImportExportFactory.class);
+        this.monitor = monitor;
+    }
+    
+    /**
+     * Report a warning.
+     * 
+     * @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(), "contribution-resource-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
+	        monitor.problem(problem);
+    	 }
+     }
+    
+    public QName getArtifactType() {
+        return IMPORT_RESOURCE;
+    }
+    
+    public Class<ResourceImport> getModelType() {
+        return ResourceImport.class;
+    }
+
+    /**
+     * Process <import.resource uri="" location=""/>
+     */
+    public ResourceImport read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+    	ResourceImport resourceImport = this.factory.createResourceImport();
+        QName element;
+        
+        while (reader.hasNext()) {
+            int event = reader.getEventType();
+            switch (event) {
+                case START_ELEMENT:
+                    element = reader.getName();
+
+                    // Read <import>
+                    if (IMPORT_RESOURCE.equals(element)) {
+                        String uri = reader.getAttributeValue(null, URI);
+                        if (uri == null) {
+                        	error("AttributeURIMissing", reader);
+                            //throw new ContributionReadException("Attribute 'uri' is missing");
+                        } else
+                            resourceImport.setURI(uri);
+
+                        String location = reader.getAttributeValue(null, LOCATION);
+                        if (location != null) {
+                            resourceImport.setLocation(location);
+                        }
+                    }
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    if (IMPORT_RESOURCE.equals(reader.getName())) {
+                        return resourceImport;
+                    }
+                    break;        
+            }
+            
+            // Read the next element
+            if (reader.hasNext()) {
+                reader.next();
+            }
+        }
+        
+        return resourceImport;
+    }
+
+    public void write(ResourceImport resourceImport, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+        
+        // Write <import>
+        writer.writeStartElement(IMPORT_RESOURCE.getNamespaceURI(), IMPORT_RESOURCE.getLocalPart());
+        
+        if (resourceImport.getURI() != null) {
+            writer.writeAttribute(URI, resourceImport.getURI());
+        }
+        if (resourceImport.getLocation() != null) {
+            writer.writeAttribute(LOCATION, resourceImport.getLocation());
+        }
+        
+        writer.writeEndElement();
+    }
+
+
+    public void resolve(ResourceImport model, ModelResolver resolver) throws ContributionResolveException {
+    }
+}
diff --git a/java/sca/modules/contribution-resource/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor b/java/sca/modules/contribution-resource/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
new file mode 100644
index 0000000000..14eb81546d
--- /dev/null
+++ b/java/sca/modules/contribution-resource/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. 
+
+org.apache.tuscany.sca.contribution.resource.impl.ResourceImportProcessor;qname=http://www.osoa.org/xmlns/sca/1.0#import.resource,model=org.apache.tuscany.sca.contribution.resource.ResourceImport
+org.apache.tuscany.sca.contribution.resource.impl.ResourceExportProcessor;qname=http://www.osoa.org/xmlns/sca/1.0#export.resource,model=org.apache.tuscany.sca.contribution.resource.ResourceExport
diff --git a/java/sca/modules/contribution-resource/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resolver.ModelResolver b/java/sca/modules/contribution-resource/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resolver.ModelResolver
new file mode 100644
index 0000000000..08d2b1c338
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resolver.ModelResolver
@@ -0,0 +1,18 @@
+# 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. 

+

+org.apache.tuscany.sca.contribution.resource.impl.ArtifactModelResolver;model=org.apache.tuscany.sca.contribution.Artifact
\ No newline at end of file
diff --git a/java/sca/modules/contribution-resource/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resource.ResourceImportExportFactory b/java/sca/modules/contribution-resource/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resource.ResourceImportExportFactory
new file mode 100644
index 0000000000..d39a5065c2
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resource.ResourceImportExportFactory
@@ -0,0 +1,18 @@
+# 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. 

+

+org.apache.tuscany.sca.contribution.resource.impl.ResourceImportExportFactoryImpl

diff --git a/java/sca/modules/contribution-resource/src/main/resources/contribution-resource-validation-messages.properties b/java/sca/modules/contribution-resource/src/main/resources/contribution-resource-validation-messages.properties
new file mode 100644
index 0000000000..58ee8153f8
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/main/resources/contribution-resource-validation-messages.properties
@@ -0,0 +1,22 @@
+#
+#
+#    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.
+#
+#
+AttributeURIMissing = Attribute 'uri' is missing
+
diff --git a/java/sca/modules/contribution-resource/src/test/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportProcessorTestCase.java b/java/sca/modules/contribution-resource/src/test/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportProcessorTestCase.java
new file mode 100644
index 0000000000..52ec0b4cfc
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/test/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceExportProcessorTestCase.java
@@ -0,0 +1,106 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.contribution.resource.impl;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.io.StringReader;
+
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamReader;
+
+import org.apache.tuscany.sca.contribution.processor.ExtensibleStAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.contribution.resource.ResourceExport;
+import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.monitor.DefaultMonitorFactory;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.MonitorFactory;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ * Test NamespaceExportProcessorTestCase
+ *  
+ * @version $Rev$ $Date$
+ */
+public class ResourceExportProcessorTestCase {
+
+    private static final String VALID_XML =
+        "<?xml version=\"1.0\" encoding=\"ASCII\"?>" + "<export.resource xmlns=\"http://www.osoa.org/xmlns/sca/1.0\" xmlns:ns=\"http://ns\" uri=\"helloworld/HelloWorldService.componentType\"/>";
+
+    private static final String INVALID_XML =
+        "<?xml version=\"1.0\" encoding=\"ASCII\"?>" + "<export.resource xmlns=\"http://www.osoa.org/xmlns/sca/1.0\" xmlns:ns=\"http://ns\"/>";
+
+    private static XMLInputFactory inputFactory;
+    private static StAXArtifactProcessor<Object> staxProcessor;
+    private static Monitor monitor;
+
+    @BeforeClass
+    public static void setUp() throws Exception {
+        ExtensionPointRegistry extensionPoints = new DefaultExtensionPointRegistry();
+        inputFactory = XMLInputFactory.newInstance();
+        // Create a monitor
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        MonitorFactory monitorFactory = new DefaultMonitorFactory();
+        if (monitorFactory != null) {
+            monitor = monitorFactory.createMonitor();
+            utilities.addUtility(monitorFactory);
+        }
+        StAXArtifactProcessorExtensionPoint staxProcessors =
+            extensionPoints.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);
+        staxProcessor = new ExtensibleStAXArtifactProcessor(staxProcessors, inputFactory, null, null);
+    }
+
+    /**
+     * Test loading a valid export element from a contribution metadata stream
+     * @throws Exception
+     */
+    @Test
+    public void testLoad() throws Exception {
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(VALID_XML));
+        ResourceExport resourceExport = (ResourceExport)staxProcessor.read(reader);
+        assertEquals("helloworld/HelloWorldService.componentType", resourceExport.getURI());
+    }
+
+    /**
+     * Test loading an INVALID export element from a contribution metadata stream
+     * @throws Exception
+     */
+    @Test
+    public void testLoadInvalid() throws Exception {
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(INVALID_XML));
+        /*try {
+            staxProcessor.read(reader);
+            fail("readerException should have been thrown");
+        } catch (ContributionReadException e) {
+            assertTrue(true);
+        }*/
+        staxProcessor.read(reader);
+        Problem problem = monitor.getLastProblem();
+        assertNotNull(problem);
+        assertEquals("AttributeURIMissing", problem.getMessageId());
+    }
+}
diff --git a/java/sca/modules/contribution-resource/src/test/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportProcessorTestCase.java b/java/sca/modules/contribution-resource/src/test/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportProcessorTestCase.java
new file mode 100644
index 0000000000..1fc439f073
--- /dev/null
+++ b/java/sca/modules/contribution-resource/src/test/java/org/apache/tuscany/sca/contribution/resource/impl/ResourceImportProcessorTestCase.java
@@ -0,0 +1,107 @@
+/*
+ * 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.contribution.resource.impl;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.io.StringReader;
+
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamReader;
+
+import org.apache.tuscany.sca.contribution.processor.ExtensibleStAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.contribution.resource.ResourceImport;
+import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.monitor.DefaultMonitorFactory;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.MonitorFactory;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ * Test NamespaceImportProcessorTestCase
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ResourceImportProcessorTestCase {
+
+    private static final String VALID_XML =
+        "<?xml version=\"1.0\" encoding=\"ASCII\"?>" + "<import.resource xmlns=\"http://www.osoa.org/xmlns/sca/1.0\" xmlns:ns=\"http://ns\" uri=\"helloworld/HelloWorldService.componentType\" location=\"sca://contributions/001\"/>";
+
+    private static final String INVALID_XML =
+        "<?xml version=\"1.0\" encoding=\"ASCII\"?>" + "<import.resource xmlns=\"http://www.osoa.org/xmlns/sca/1.0\" xmlns:ns=\"http://ns\" location=\"sca://contributions/001\"/>";
+
+    private static XMLInputFactory inputFactory;
+    private static StAXArtifactProcessor<Object> staxProcessor;
+    private static Monitor monitor;
+
+    @BeforeClass
+    public static void setUp() throws Exception {
+        ExtensionPointRegistry extensionPoints = new DefaultExtensionPointRegistry();
+        inputFactory = XMLInputFactory.newInstance();
+        // Create a monitor
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        MonitorFactory monitorFactory = new DefaultMonitorFactory();
+        if (monitorFactory != null) {
+            monitor = monitorFactory.createMonitor();
+            utilities.addUtility(monitorFactory);
+        }
+        StAXArtifactProcessorExtensionPoint staxProcessors =
+            extensionPoints.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);
+        staxProcessor = new ExtensibleStAXArtifactProcessor(staxProcessors, inputFactory, null, null);
+    }
+
+    /**
+     * Test loading a valid import element from a contribution metadata stream
+     * @throws Exception
+     */
+    @Test
+    public void testLoad() throws Exception {
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(VALID_XML));
+        ResourceImport namespaceImport = (ResourceImport)staxProcessor.read(reader);
+        assertEquals("helloworld/HelloWorldService.componentType", namespaceImport.getURI());
+        assertEquals("sca://contributions/001", namespaceImport.getLocation());
+    }
+
+    /**
+     * Test loading a INVALID import element from a contribution metadata stream
+     * @throws Exception
+     */
+    @Test
+    public void testLoadInvalid() throws Exception {
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(INVALID_XML));
+        /*try {
+            staxProcessor.read(reader);
+            fail("readerException should have been thrown");
+        } catch (ContributionReadException e) {
+            assertTrue(true);
+        }*/
+        staxProcessor.read(reader);
+        Problem problem = monitor.getLastProblem();
+        assertNotNull(problem);
+        assertEquals("AttributeURIMissing", problem.getMessageId());
+    }
+}