Move Tuscany from Incubator to top level.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@668359 13f79535-47bb-0310-9956-ffa450edef68

9 files changed, 657 insertions, 0 deletions

diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceExport.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceExport.java
new file mode 100644
index 0000000000..c68aee8521
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceExport.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.namespace;
+
+import org.apache.tuscany.sca.contribution.Export;
+
+
+/**
+ * The representation of an XML namespace export.
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface NamespaceExport extends Export {
+
+    /**
+     * Get Namespace that identifies the export
+     * 
+     * @return The exported namespace
+     */
+    String getNamespace();
+
+    /**
+     * Set Namespace that identifies the export
+     * 
+     * @param namespace The exported namespace
+     */
+    void setNamespace(String namespace);
+    
+}
diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceImport.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceImport.java
new file mode 100644
index 0000000000..8af36d7da0
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceImport.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.namespace;
+
+import org.apache.tuscany.sca.contribution.Import;
+
+/**
+ * The representation of an XML namespace import.
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface NamespaceImport 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 Namespace that identifies the import
+     * 
+     * @return The namespace
+     */
+    String getNamespace();
+
+    /**
+     * Set Namespace that identifies the import
+     * 
+     * @param namespace The namespace
+     */
+    void setNamespace(String namespace);
+    
+}
\ No newline at end of file
diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceImportExportFactory.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceImportExportFactory.java
new file mode 100644
index 0000000000..cfbac8bb1f
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/NamespaceImportExportFactory.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.namespace;
+
+/**
+ * Base Namespace import/export model factory
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface NamespaceImportExportFactory {
+
+    /**
+     * Create a namespace import model object
+     * 
+     * @return The new NamespaceImport model object
+     */
+    NamespaceImport createNamespaceImport();
+    
+    /**
+     * Create a namespace export model object
+     * 
+     * @return The new NamespaceExport model object
+     */
+    NamespaceExport createNamespaceExport();
+}
diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceExportImpl.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceExportImpl.java
new file mode 100644
index 0000000000..080a6bab2b
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceExportImpl.java
@@ -0,0 +1,56 @@
+/*
+ * 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.namespace.impl;
+
+import org.apache.tuscany.sca.contribution.namespace.NamespaceExport;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+
+/**
+ * The representation of an export for the contribution
+ * 
+ * @version $Rev$ $Date$
+ */
+public class NamespaceExportImpl implements NamespaceExport {
+    /**
+     * The namespace to be exported
+     */
+    private String namespace; 
+    private ModelResolver modelResolver;
+    
+    protected NamespaceExportImpl() {
+        super();
+    }
+    
+    public String getNamespace() {
+        return namespace;
+    }
+
+    public void setNamespace(String namespace) {
+        this.namespace = namespace;
+    }
+    
+    public ModelResolver getModelResolver() {
+        return modelResolver;
+    }
+    
+    public void setModelResolver(ModelResolver modelResolver) {
+        this.modelResolver = modelResolver;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceExportProcessor.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceExportProcessor.java
new file mode 100644
index 0000000000..ece5240801
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceExportProcessor.java
@@ -0,0 +1,112 @@
+/*
+ * 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.namespace.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.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceExport;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceImportExportFactory;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
+import org.apache.tuscany.sca.contribution.service.ContributionWriteException;
+
+/**
+ * Artifact processor for Namespace export
+ * 
+ * @version $Rev$ $Date$
+ */
+public class NamespaceExportProcessor implements StAXArtifactProcessor<NamespaceExport> {
+    private static final String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0";
+    
+    private static final QName EXPORT = new QName(SCA10_NS, "export");
+    
+    private static final String NAMESPACE = "namespace";
+    
+    private final NamespaceImportExportFactory factory;
+    
+    public NamespaceExportProcessor(ModelFactoryExtensionPoint modelFactories) {
+        super();
+        this.factory = modelFactories.getFactory(NamespaceImportExportFactory.class);
+    }
+
+    public QName getArtifactType() {
+        return EXPORT;
+    }
+    
+    public Class<NamespaceExport> getModelType() {
+        return NamespaceExport.class;
+    }
+    
+    /**
+     * Process <export namespace=""/>
+     */
+    public NamespaceExport read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+        NamespaceExport namespaceExport = this.factory.createNamespaceExport();
+        QName element = null;
+
+        
+        while (reader.hasNext()) {
+            int event = reader.getEventType();
+            switch (event) {
+                case START_ELEMENT:
+                    element = reader.getName();
+                    
+                    if (EXPORT.equals(element)) {
+                        String ns = reader.getAttributeValue(null, NAMESPACE);
+                        if (ns == null) {
+                            throw new ContributionReadException("Attribute 'namespace' is missing");
+                        }
+                        namespaceExport.setNamespace(ns);
+                    } 
+                    
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    if (EXPORT.equals(reader.getName())) {
+                        return namespaceExport;
+                    }
+                    break;        
+            }
+            
+            //Read the next element
+            if (reader.hasNext()) {
+                reader.next();
+            }
+        }
+        
+        return namespaceExport;
+    }
+
+    public void write(NamespaceExport model, XMLStreamWriter outputSource) throws ContributionWriteException, XMLStreamException {
+        
+    }
+
+    public void resolve(NamespaceExport model, ModelResolver resolver) throws ContributionResolveException {
+        
+    }
+}
diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportFactoryImpl.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportFactoryImpl.java
new file mode 100644
index 0000000000..1146e593a9
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportFactoryImpl.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.namespace.impl;
+
+import org.apache.tuscany.sca.contribution.namespace.NamespaceExport;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceImport;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceImportExportFactory;
+
+/**
+ * Namespace Import/Export model factory implementation
+ * 
+ * @version $Rev$ $Date$
+ */
+public class NamespaceImportExportFactoryImpl implements NamespaceImportExportFactory {
+
+    public NamespaceImport createNamespaceImport() {
+        return new NamespaceImportImpl();
+    }
+    
+    public NamespaceExport createNamespaceExport() {
+        return new NamespaceExportImpl();
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportListener.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportListener.java
new file mode 100644
index 0000000000..f235f9f9f1
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportExportListener.java
@@ -0,0 +1,97 @@
+/*
+ * 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.namespace.impl;
+
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.Export;
+import org.apache.tuscany.sca.contribution.Import;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceExport;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceImport;
+import org.apache.tuscany.sca.contribution.resolver.DefaultImportAllModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionListener;
+import org.apache.tuscany.sca.contribution.service.ContributionRepository;
+
+/**
+ * Namespace Import/Export contribution listener
+ * The listener would process all import/export from a given contribution 
+ * and initialize the model resolvers properly
+ * 
+ * @version $Rev$ $Date$
+ */
+public class NamespaceImportExportListener implements ContributionListener {
+
+    /**
+     * Initialize the import/export model resolvers
+     * Export model resolvers are same as Contribution model resolver
+     * Import model resolvers are matched to a specific contribution if a location uri is specified, 
+     *    otherwise it try to resolve agains all the other contributions
+     */    
+    public void contributionAdded(ContributionRepository repository, Contribution contribution) {
+        // Initialize the contribution exports
+        for (Export export: contribution.getExports()) {
+            export.setModelResolver(contribution.getModelResolver());
+        }
+        
+        // Initialize the contribution imports
+        for (Import import_: contribution.getImports()) {
+            boolean initialized = false;
+            
+            if (import_ instanceof NamespaceImport) {
+                NamespaceImport namespaceImport = (NamespaceImport)import_;
+                
+                // Find a matching contribution
+                if (namespaceImport.getLocation() != null) {
+                    Contribution targetContribution = repository.getContribution(namespaceImport.getLocation());
+                    if (targetContribution != null) {
+                    
+                        // Find a matching contribution export
+                        for (Export export: targetContribution.getExports()) {
+                            if (export instanceof NamespaceExport) {
+                                NamespaceExport namespaceExport = (NamespaceExport)export;
+                                if (namespaceImport.getNamespace().equals(namespaceExport.getNamespace())) {
+                                    namespaceImport.setModelResolver(namespaceExport.getModelResolver());
+                                    initialized = true;
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                } 
+            } 
+            
+            //if no location was specified, try to resolve with any contribution            
+            if( !initialized ) {
+                // Use a resolver that will consider all contributions
+                import_.setModelResolver(new DefaultImportAllModelResolver(import_, repository.getContributions()));
+            }
+            
+        }
+
+    }
+
+    public void contributionRemoved(ContributionRepository repository, Contribution contribution) {
+
+    }
+
+    public void contributionUpdated(ContributionRepository repository, Contribution oldContribution, Contribution contribution) {
+
+    }
+
+}
diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportImpl.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportImpl.java
new file mode 100644
index 0000000000..468b18fc05
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportImpl.java
@@ -0,0 +1,88 @@
+/*
+ * 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.namespace.impl;
+
+import org.apache.tuscany.sca.contribution.Export;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceExport;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceImport;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+
+/**
+ * The representation of an import for the contribution
+ * 
+ * @version $Rev$ $Date$
+ */
+public class NamespaceImportImpl implements NamespaceImport {
+    private ModelResolver modelResolver;
+    /**
+     * The namespace to be imported
+     */
+    private String namespace; 
+    /**
+     * Optional location URI pointing to a Contribution that exports the namespace
+     */
+    private String location;
+
+    
+    protected NamespaceImportImpl() {
+        super();
+    }
+    
+    public String getLocation() {
+        return location;
+    }
+
+    public void setLocation(String location) {
+        this.location = location;
+    }
+
+    public String getNamespace() {
+        return namespace;
+    }
+
+    public void setNamespace(String namespace) {
+        this.namespace = namespace;
+    }
+    
+    public ModelResolver getModelResolver() {
+        return modelResolver;
+    }
+    
+    public void setModelResolver(ModelResolver modelResolver) {
+        this.modelResolver = modelResolver;
+    }
+
+    /**
+     * Match a NamespaceImport to a given NamespaceExport based on :
+     *    location is not provided
+     *    import and export namespaces match
+     */
+    public boolean match(Export export) {
+        if (export instanceof NamespaceExport) {
+            if (this.getLocation() == null || this.getLocation().length() == 0) {
+                if (this.getNamespace().equals(((NamespaceExport)export).getNamespace())) {
+                    return true;
+                }
+            }
+            
+        }
+        return false;
+    }
+}
diff --git a/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportProcessor.java b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportProcessor.java
new file mode 100644
index 0000000000..67c3d4b784
--- /dev/null
+++ b/branches/sca-java-0.99/modules/contribution-namespace/src/main/java/org/apache/tuscany/sca/contribution/namespace/impl/NamespaceImportProcessor.java
@@ -0,0 +1,116 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.contribution.namespace.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.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceImport;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceImportExportFactory;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
+import org.apache.tuscany.sca.contribution.service.ContributionWriteException;
+
+/**
+ * Artifact processor for Namespace import
+ * 
+ * @version $Rev$ $Date$
+ */
+public class NamespaceImportProcessor  implements StAXArtifactProcessor<NamespaceImport> {
+    private static final String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0";
+    
+    private static final QName IMPORT = new QName(SCA10_NS, "import");
+
+    private static final String NAMESPACE = "namespace";
+    private static final String LOCATION = "location";
+    
+    private final NamespaceImportExportFactory factory;
+    
+    public NamespaceImportProcessor(ModelFactoryExtensionPoint modelFactories) {
+        super();
+        this.factory = modelFactories.getFactory(NamespaceImportExportFactory.class);
+    }
+    
+    public QName getArtifactType() {
+        return IMPORT;
+    }
+    
+    public Class<NamespaceImport> getModelType() {
+        return NamespaceImport.class;
+    }
+
+    /**
+     * Process <import namespace="" location=""/>
+     */
+    public NamespaceImport read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+        NamespaceImport namespaceImport = this.factory.createNamespaceImport();
+        QName element = null;
+        
+        while (reader.hasNext()) {
+            int event = reader.getEventType();
+            switch (event) {
+                case START_ELEMENT:
+                    element = reader.getName();
+                    
+                    if (IMPORT.equals(element)) {
+                        String ns = reader.getAttributeValue(null, NAMESPACE);
+                        if (ns == null) {
+                            throw new ContributionReadException("Attribute 'namespace' is missing");
+                        }
+                        String location = reader.getAttributeValue(null, LOCATION);
+                        if (location != null) {
+                            namespaceImport.setLocation(location);
+                        }
+                        namespaceImport.setNamespace(ns);
+                    }
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    if (IMPORT.equals(reader.getName())) {
+                        return namespaceImport;
+                    }
+                    break;        
+            }
+            
+            //Read the next element
+            if (reader.hasNext()) {
+                reader.next();
+            }
+        }
+        
+        return namespaceImport;
+    }
+
+    public void write(NamespaceImport model, XMLStreamWriter outputSource) throws ContributionWriteException, XMLStreamException {
+        
+    }
+
+
+    public void resolve(NamespaceImport model, ModelResolver resolver) throws ContributionResolveException {
+        
+    }
+}