Renaming branch

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@694108 13f79535-47bb-0310-9956-ffa450edef68

28 files changed, 2595 insertions, 0 deletions

diff --git a/branches/sca-java-20080910/modules/contribution-java/LICENSE b/branches/sca-java-20080910/modules/contribution-java/LICENSE
new file mode 100644
index 0000000000..8aa906c321
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/LICENSE
@@ -0,0 +1,205 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+      separable from, or merely link (or bind by name) to the interfaces of,
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
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+      to the Licensor or its representatives, including but not limited to
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+      designated in writing by the copyright owner as "Not a Contribution."
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+      on behalf of whom a Contribution has been received by Licensor and
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+   2. Grant of Copyright License. Subject to the terms and conditions of
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+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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+      Contribution(s) alone or by combination of their Contribution(s)
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+      institute patent litigation against any entity (including a
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+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
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+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
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+      meet the following conditions:
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+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
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+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
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+          that such additional attribution notices cannot be construed
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+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
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+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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diff --git a/branches/sca-java-20080910/modules/contribution-java/NOTICE b/branches/sca-java-20080910/modules/contribution-java/NOTICE
new file mode 100644
index 0000000000..fdfa0e9faa
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/NOTICE
@@ -0,0 +1,6 @@
+${pom.name}
+Copyright (c) 2005 - 2008 The Apache Software Foundation
+
+This product includes software developed by
+The Apache Software Foundation (http://www.apache.org/).
+
diff --git a/branches/sca-java-20080910/modules/contribution-java/pom.xml b/branches/sca-java-20080910/modules/contribution-java/pom.xml
new file mode 100644
index 0000000000..153a4f7c5e
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/pom.xml
@@ -0,0 +1,77 @@
+<?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.    
+-->
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.tuscany.sca</groupId>
+        <artifactId>tuscany-modules</artifactId>
+        <version>1.4-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>tuscany-contribution-java</artifactId>
+    <name>Apache Tuscany SCA Java Import/Export Model</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.tuscany.sca</groupId>
+            <artifactId>tuscany-contribution</artifactId>
+            <version>1.4-SNAPSHOT</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.tuscany.sca</groupId>
+            <artifactId>tuscany-core-spi</artifactId>
+            <version>1.4-SNAPSHOT</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.codehaus.woodstox</groupId>
+            <artifactId>wstx-asl</artifactId>
+            <version>3.2.1</version>
+            <scope>runtime</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>stax</groupId>
+                    <artifactId>stax-api</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.felix</groupId>
+                <artifactId>maven-bundle-plugin</artifactId>
+
+                <configuration>
+                    <instructions>
+                        <Bundle-Version>${tuscany.version}</Bundle-Version>
+                        <Bundle-SymbolicName>org.apache.tuscany.sca.contribution.java</Bundle-SymbolicName>
+                        <Bundle-Description>${pom.name}</Bundle-Description>
+                        <Export-Package>org.apache.tuscany.sca.contribution.java*</Export-Package>
+                        <DynamicImport-Package>org.apache.tuscany.sca.contribution.osgi.impl</DynamicImport-Package>
+                    </instructions>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/DefaultJavaImportExportFactory.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/DefaultJavaImportExportFactory.java
new file mode 100644
index 0000000000..886c61c00a
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/DefaultJavaImportExportFactory.java
@@ -0,0 +1,30 @@
+/*
+ * 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.java;
+
+import org.apache.tuscany.sca.contribution.java.impl.JavaImportExportFactoryImpl;
+
+/**
+ * Default Java Import/Export Factory implementation
+ * 
+ * @version $Rev$ $Date$
+ */
+public class DefaultJavaImportExportFactory extends JavaImportExportFactoryImpl implements JavaImportExportFactory {
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaExport.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaExport.java
new file mode 100644
index 0000000000..41e93ec148
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaExport.java
@@ -0,0 +1,43 @@
+/*
+ * 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.java;
+
+import org.apache.tuscany.sca.contribution.Export;
+
+/**
+ * Base Java Export model interface
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface JavaExport extends Export {
+    /**
+     * Get java package that identifies the import
+     * 
+     * @return The package name
+     */
+    String getPackage();
+
+    /**
+     * Set java package that identifies the import
+     * 
+     * @param packageName The package name
+     */
+    void setPackage(String packageName);
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaImport.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaImport.java
new file mode 100644
index 0000000000..d3568f6283
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaImport.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.java;
+
+import org.apache.tuscany.sca.contribution.Import;
+
+/**
+ * Base Java Import model interface
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface JavaImport 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 java package that identifies the import
+     * 
+     * @return The package name
+     */
+    String getPackage();
+
+    /**
+     * Set java package that identifies the import
+     * 
+     * @param packageName The package name
+     */
+    void setPackage(String packageName);
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaImportExportFactory.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaImportExportFactory.java
new file mode 100644
index 0000000000..af2ca9cd57
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/JavaImportExportFactory.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.java;

+

+/**

+ * Base Java Import/Export model factory

+ * 

+ * @version $Rev$ $Date$

+ */

+public interface JavaImportExportFactory {

+

+    /**

+     * Create a java import model object

+     * 

+     * @return The new JavaImport model object

+     */

+    JavaImport createJavaImport();

+    

+    /**

+     * Create a java export model object

+     * 

+     * @return The new JavaExport model object

+     */

+    JavaExport createJavaExport();

+}

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ClassLoaderModelResolver.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ClassLoaderModelResolver.java
new file mode 100644
index 0000000000..61c73bf2f8
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ClassLoaderModelResolver.java
@@ -0,0 +1,161 @@
+/*
+ * 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.java.impl;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.Import;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.java.JavaImport;
+import org.apache.tuscany.sca.contribution.resolver.ClassReference;
+import org.apache.tuscany.sca.contribution.resolver.DefaultDelegatingModelResolver;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
+
+/**
+ * A Model Resolver for ClassReferences.
+ *
+ * @version $Rev$ $Date$
+ */
+public class ClassLoaderModelResolver extends URLClassLoader implements ModelResolver {
+    private Contribution contribution;
+    private Map<String, ModelResolver> importResolvers = new HashMap<String, ModelResolver>();
+    
+    private static ClassLoader parentClassLoader() {
+        ClassLoader parentClassLoader = ServiceDiscovery.getInstance().getServiceDiscoverer().getClass().getClassLoader();
+        return parentClassLoader;
+    }
+    
+    public ClassLoaderModelResolver(final Contribution contribution, ModelFactoryExtensionPoint modelFactories) throws MalformedURLException {
+        super(new URL[] {new URL(contribution.getLocation())}, parentClassLoader());
+        this.contribution = contribution;
+        
+        // Index Java import resolvers by package name
+        Map<String, List<ModelResolver>> resolverMap = new HashMap<String, List<ModelResolver>>();
+        for (Import import_: this.contribution.getImports()) {
+            if (import_ instanceof JavaImport) {
+                JavaImport javaImport = (JavaImport)import_;
+                List<ModelResolver> resolvers = resolverMap.get(javaImport.getPackage());
+                if (resolvers == null) {
+                    resolvers = new ArrayList<ModelResolver>();
+                    resolverMap.put(javaImport.getPackage(), resolvers);
+                }
+                resolvers.add(javaImport.getModelResolver());
+            }
+        }
+        
+        // Create a delegating model resolver for each imported package
+        for (Map.Entry<String, List<ModelResolver>> entry: resolverMap.entrySet()) {
+            importResolvers.put(entry.getKey(), new DefaultDelegatingModelResolver(entry.getValue()));
+        }
+    }
+
+    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) {
+        if (!(unresolved instanceof ClassReference)) {
+            return unresolved;
+        }
+        
+        try {
+            
+            // Load the class and return a class reference for it
+            String className = ((ClassReference)unresolved).getClassName();
+            Class<?> clazz = Class.forName(className, true, this);
+            return modelClass.cast(new ClassReference(clazz));
+            
+        } catch (ClassNotFoundException e) {
+            return unresolved;
+        } catch (NoClassDefFoundError e) {
+            return unresolved;
+        }
+    }
+    
+    @Override
+    public URL findResource(String name) {
+        
+        //TODO delegate to the Java import resolvers
+        
+        URL url = super.findResource(name);
+        return url;
+    }
+
+    @Override
+    public Enumeration<URL> findResources(String name) throws IOException {
+        
+        //TODO delegate to the Java import resolvers
+        //Enumeration<URL> importedResources;
+        
+        Enumeration<URL> resources = super.findResources(name);
+        List<URL> allResources = new ArrayList<URL>(); 
+        //for (; importedResources.hasMoreElements(); ) {
+        //    allResources.add(importedResources.nextElement());
+        //}
+        for (; resources.hasMoreElements(); ) {
+            allResources.add(resources.nextElement());
+        }
+        return Collections.enumeration(allResources);
+    }
+    
+    @Override
+    protected Class<?> findClass(String name) throws ClassNotFoundException {
+        
+        // Extract the package name
+        int d = name.lastIndexOf('.');
+        String packageName;
+        if (d != -1) {
+            packageName = name.substring(0, d);
+        } else {
+            packageName = null;
+        }
+        
+        // First try to load the class using the Java import resolvers
+        ModelResolver importResolver = importResolvers.get(packageName);
+        if (importResolver != null) {
+            ClassReference classReference = importResolver.resolveModel(ClassReference.class, new ClassReference(name));
+            if (!classReference.isUnresolved()) {
+                return classReference.getJavaClass();
+            }
+        }
+
+        // Next, try to load the class from the current contribution
+        Class<?> clazz = super.findClass(name);
+        return clazz;
+    }
+    
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ClassReferenceModelResolver.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ClassReferenceModelResolver.java
new file mode 100644
index 0000000000..962512a745
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ClassReferenceModelResolver.java
@@ -0,0 +1,158 @@
+/*

+ * 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.java.impl;

+

+import java.lang.ref.WeakReference;

+import java.lang.reflect.Constructor;

+import java.security.AccessController;

+import java.security.PrivilegedAction;

+import java.util.HashMap;

+import java.util.Map;

+

+import org.apache.tuscany.sca.contribution.Contribution;

+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;

+import org.apache.tuscany.sca.contribution.resolver.ClassReference;

+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;

+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;

+

+/**

+ * A Model Resolver for ClassReferences.

+ *

+ * @version $Rev: 557916 $ $Date: 2007-07-20 01:04:40 -0700 (Fri, 20 Jul 2007) $

+ */

+public class ClassReferenceModelResolver implements ModelResolver {

+    private Contribution contribution;

+    private WeakReference<ClassLoader> classLoader;

+    private Map<String, ClassReference> map = new HashMap<String, ClassReference>();

+

+    private ModelResolver osgiResolver;

+

+    public ClassReferenceModelResolver(final Contribution contribution, ModelFactoryExtensionPoint modelFactories) {

+        this.contribution = contribution;

+        if (this.contribution != null) {

+            // Allow privileged access to get ClassLoader. Requires RuntimePermission in security policy.

+            // ClassLoader cl = contribution.getClassLoader();

+            ClassLoader cl = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {

+                public ClassLoader run() {

+                    return contribution.getClassLoader();

+                }

+            });           

+

+            if (cl == null) {

+                // Allow privileged access to get ClassLoader. Requires RuntimePermission in security policy.

+                //ClassLoader contextClassLoader = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {

+                //    public ClassLoader run() {

+                //        return Thread.currentThread().getContextClassLoader();

+                //    }

+                //});

+                ClassLoader contextClassLoader = ServiceDiscovery.getInstance().getServiceDiscoverer().getClass().getClassLoader();

+                cl = new ContributionClassLoader(contribution, contextClassLoader);

+                contribution.setClassLoader(cl);

+            }

+            this.classLoader = new WeakReference<ClassLoader>(cl);

+        } else {

+            // This path should be used only for unit testing.

+            // Allow privileged access to get ClassLoader. Requires RuntimePermission in security policy.

+            // this.classLoader = new WeakReference<ClassLoader>(this.getClass().getClassLoader());

+            ClassLoader cl = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {

+                public ClassLoader run() {

+                    return this.getClass().getClassLoader();

+                }

+            });           

+            this.classLoader = new WeakReference<ClassLoader>( cl );

+        }

+

+        try {

+            Class<?> osgiResolverClass =

+                Class.forName("org.apache.tuscany.sca.contribution.osgi.impl.OSGiClassReferenceModelResolver");

+            if (osgiResolverClass != null) {

+                Constructor constructor =

+                    osgiResolverClass.getConstructor(Contribution.class, ModelFactoryExtensionPoint.class);

+                this.osgiResolver = (ModelResolver)constructor.newInstance(contribution, modelFactories);

+            }

+        } catch (Throwable e) {

+            // Ignore error, non-OSGi classloading is used in this case

+        }

+    }

+

+    public void addModel(Object resolved) {

+        ClassReference clazz = (ClassReference)resolved;

+        map.put(clazz.getClassName(), clazz);

+    }

+

+    public Object removeModel(Object resolved) {

+        return map.remove(((ClassReference)resolved).getClassName());

+    }

+

+  

+

+    public <T> T resolveModel(Class<T> modelClass, T unresolved) {

+        if (!(unresolved instanceof ClassReference)) {

+            return unresolved;

+        }

+        Object resolved = map.get(((ClassReference)unresolved).getClassName());

+

+        if (resolved != null) {

+            return modelClass.cast(resolved);

+        }

+

+        //Load a class on demand

+        Class clazz = null;

+        

+        if (osgiResolver != null) {

+            resolved = osgiResolver.resolveModel(modelClass, unresolved);

+            clazz = ((ClassReference)resolved).getJavaClass();

+        }

+        

+        if (clazz == null) {

+            try {

+            	// Search contribution ClassLoader (which has visibility of classes in the contribution

+            	// as well as explicitly imported packages from other contributions)

+                clazz = Class.forName(((ClassReference)unresolved).getClassName(), true, classLoader.get());

+            } catch (ClassNotFoundException e) {

+            } catch (NoClassDefFoundError e) {

+            }

+        }

+

+        if (clazz != null) {

+            //if we load the class            

+            // Store a new ClassReference wrapping the loaded class

+            ClassReference classReference = new ClassReference(clazz);

+            map.put(clazz.getName(), classReference);

+

+            // Return the resolved ClassReference

+            return modelClass.cast(classReference);

+        } else {

+            return unresolved;

+        }

+

+    }

+

+    

+    /***************

+     * Helper methods

+     ***************/

+

+    private String getPackageName(ClassReference clazz) {

+        int pos = clazz.getClassName().lastIndexOf(".");

+        return clazz.getClassName().substring(0, pos);

+    }

+    

+}

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ContributionClassLoader.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ContributionClassLoader.java
new file mode 100644
index 0000000000..aa68925376
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/ContributionClassLoader.java
@@ -0,0 +1,385 @@
+/*

+ * 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.java.impl;

+

+import java.io.IOException;

+import java.net.MalformedURLException;

+import java.net.URL;

+import java.net.URLClassLoader;

+import java.security.AccessController;

+import java.security.PrivilegedAction;

+import java.util.Collection;

+import java.util.Collections;

+import java.util.Enumeration;

+import java.util.HashSet;

+

+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.java.JavaImport;

+

+

+public class ContributionClassLoader extends URLClassLoader {

+// public class ContributionClassLoader  {

+    

+    private Contribution contribution;

+    // private b urlClassLoader;

+    

+    /**

+     * Constructor for contribution ClassLoader 

+     * 

+     * @param contribution

+     * @param parent

+     * @throws MalformedURLException

+     */

+    public ContributionClassLoader(Contribution contribution, final ClassLoader parent) {

+        super(new URL[0], parent);

+        // Note that privileged use of getContextClassLoader have been promoted to callers.

+        // super(new URL[0], parent == null?Thread.currentThread().getContextClassLoader(): null);

+        this.contribution = contribution;

+        if (contribution.getLocation() != null) {

+            try {

+                this.addURL(new URL(contribution.getLocation()));

+            } catch (MalformedURLException e) {

+                throw new RuntimeException(e);

+            }

+        }

+    }

+

+    /*

+     * Return the ClassLoader corresponding to a contribution providing an export

+     * Create a new ClassLoader for the contribution if one does not exist

+     */

+    private ClassLoader getExportClassLoader(Contribution exportingContribution) {

+    	ClassLoader cl = exportingContribution.getClassLoader();

+        if (!(cl instanceof ContributionClassLoader)) {

+            if (cl == null) {

+                cl = getParent();

+            }

+

+            cl = new ContributionClassLoader(exportingContribution, cl);

+            exportingContribution.setClassLoader(cl);

+        }

+        return cl;

+    }

+    

+    /* (non-Javadoc)

+     * @see java.net.URLClassLoader#findClass(java.lang.String)

+     * 

+     * Search path for class:

+     *     This contribution

+     *     Imported contributions

+     */

+    @Override   

+    protected Class<?> findClass(String className) throws ClassNotFoundException {

+        

+        Class<?> clazz = null;

+        try {

+            clazz = findClassFromContribution(className);

+        } catch (ClassNotFoundException e) {

+                

+            for (Import import_ : this.contribution.getImports()) {

+                if (classNameMatchesImport(className, import_)) {

+                    // Delegate the resolution to the imported contribution

+                    for (Contribution exportingContribution : ((JavaImportModelResolver)import_.getModelResolver()).getExportContributions()) {

+                                    

+                        ClassLoader exportClassLoader = getExportClassLoader(exportingContribution);

+                        if (exportClassLoader instanceof ContributionClassLoader) {

+                            

+                            for (Export export : exportingContribution.getExports()) {

+                                try {

+                                    if (import_.match(export)) {

+                                        clazz = ((ContributionClassLoader)exportClassLoader).findClassFromContribution(className);

+                                        break;

+                                    }

+                                } catch (ClassNotFoundException e1) { 

+                                    continue;

+                                }

+                                    

+                            }

+                            if (clazz != null)  break;

+                        }

+                    }

+                    if (clazz != null) break;

+                }

+            }

+

+            if (clazz == null) throw e;

+        }

+        return clazz;

+    }

+

+    

+    /* (non-Javadoc)

+     * @see java.lang.ClassLoader#loadClass(java.lang.String, boolean)

+     * 

+     * Search path for class:

+     *     Parent ClassLoader

+     *     This contribution

+     *     Imported contributions

+     *     

+     */

+    @Override

+    protected synchronized Class<?> loadClass(String className, boolean resolveClass) 

+        throws ClassNotFoundException {

+       

+        Class<?> clazz = null;

+        try {

+            

+            if (this.getParent() != null)

+                clazz = this.getParent().loadClass(className);

+            

+        } catch (ClassNotFoundException e) {

+        }

+

+        if (clazz == null)

+            clazz = findClass(className);

+

+

+        if (resolveClass)

+            this.resolveClass(clazz);

+        return clazz;

+        

+    }

+

+

+   

+    /*

+     * (non-Javadoc)

+     * 

+     * @see java.net.URLClassLoader#findResource(java.lang.String)

+     */

+    @Override

+    public URL findResource(String name) {

+        

+        URL url = findResourceFromContribution(name);

+        

+        if (url == null) {

+            for (Import import_ : this.contribution.getImports()) {

+                if (resourceNameMatchesImport(name, import_)) {

+                    // Delegate the resolution to the imported contribution

+                    for (Contribution exportingContribution : ((JavaImportModelResolver)import_.getModelResolver()).getExportContributions()) {

+                                

+                        ClassLoader exportClassLoader = getExportClassLoader(exportingContribution);

+                        if (exportClassLoader instanceof ContributionClassLoader) {

+

+                            for (Export export : exportingContribution.getExports()) {

+                                if (import_.match(export)) {

+                                    url = ((ContributionClassLoader)exportClassLoader).findResourceFromContribution(name);

+                                    if (url != null) break;

+                                }

+                            }

+                            if (url != null)  break;

+                        }

+                    }

+                    if (url != null) break;

+                }

+            }

+

+        }

+        return url;

+    }

+

+

+    /* (non-Javadoc)

+     * @see java.net.URLClassLoader#findResources(java.lang.String)

+     */

+    @Override

+    public Enumeration<URL> findResources(String name) throws IOException {

+              

+        return Collections.enumeration(findResourceSet(name));

+    }

+    

+    

+

+    

+    /* (non-Javadoc)

+     * @see java.lang.ClassLoader#getResource(java.lang.String)

+     * 

+     * Find a resource. 

+     * Search path for resource:

+     *     Parent ClassLoader

+     *     This contribution

+     *     Imported contributions

+     */

+    @Override

+    public URL getResource(String resName) {

+ 

+        URL resource  = null;

+        

+        if (this.getParent() != null) {

+            resource  = this.getParent().getResource(resName);

+        }        

+        if (resource == null)

+            resource  = findResource(resName);

+        

+        return resource;

+    }

+

+

+    

+    /* (non-Javadoc)

+     * @see java.lang.ClassLoader#getResources(java.lang.String)

+     * 

+     * Return list of resources from this contribution, resources

+     * imported through imported contributions and resources from parent 

+     * ClassLoader.

+     */

+    @Override

+    public Enumeration<URL> getResources(String resName) throws IOException {

+       

+        HashSet<URL> resourceSet = findResourceSet(resName);

+        addEnumerationToCollection(resourceSet, super.getResources(resName));

+        

+        return Collections.enumeration(resourceSet);

+    }

+    

+

+    /*

+     * Find set of resources

+     */

+    private HashSet<URL> findResourceSet(String name) throws IOException {

+        

+        HashSet<URL> resources = new HashSet<URL>();

+

+        addEnumerationToCollection(resources, super.findResources(name));

+        

+        for (Import import_ : this.contribution.getImports()) {

+            if (!(import_ instanceof JavaImport)) {

+                continue;

+            }

+            if (resourceNameMatchesImport(name, import_)) {

+                // Delegate the resolution to the imported contribution

+                for (Contribution exportingContribution : ((JavaImportModelResolver)import_.getModelResolver()).getExportContributions()) {

+                                

+                    ClassLoader exportClassLoader = getExportClassLoader(exportingContribution);

+                    if (exportClassLoader instanceof ContributionClassLoader) {

+

+                        for (Export export : exportingContribution.getExports()) {

+                            if (import_.match(export)) {

+                                addEnumerationToCollection(resources,

+                                        ((ContributionClassLoader)exportClassLoader).findResources(name));

+                            }

+                        }

+                    }

+                }

+            }

+         }

+

+        return resources;

+    }

+

+

+    /*

+     * Find class from contribution. If class has already been loaded, return loaded class.

+     */

+    private Class<?> findClassFromContribution(String className) throws ClassNotFoundException {

+        

+        Class<?> clazz = findLoadedClass(className);

+        if (clazz == null)

+            clazz =  super.findClass(className);

+        return clazz;

+       

+    }

+    

+    /*

+     * Find resource from contribution.

+     */

+    private URL findResourceFromContribution(String name) {

+        

+        return super.findResource(name);

+    }

+    

+    /**

+     * Check if a class name matches an import statement.

+     * Class matches if the package name used in <import.java/> matches

+     * 

+     * @param name    Name of class 

+     * @param import_ SCA contribution import

+     * @return true if this is a matching import

+     */

+    private boolean classNameMatchesImport(String name, Import import_) {

+        

+        if (import_ instanceof JavaImport && name != null && name.lastIndexOf('.') > 0) {

+            JavaImport javaImport = (JavaImport) import_;

+                

+            String packageName = name.substring(0, name.lastIndexOf('.'));

+            if (javaImport.getPackage().endsWith(".*")) {

+                String prefix = javaImport.getPackage().substring(0, javaImport.getPackage().length() -1);

+                 if (packageName.startsWith(prefix)) {

+                    return true;

+                }

+            } else {

+                return packageName.equals(javaImport.getPackage());

+            }

+        }

+        

+        return false;

+    }

+    

+    /**

+     * Check if a resource name matches an import statement.

+     * Resource matches if package/namespace match the directory of resource.

+     * 

+     * @param name    Name of resource

+     * @param import_ SCA contribution import

+     * @return true if this is a matching import

+     */

+    private boolean resourceNameMatchesImport(String name, Import import_) {

+        

+       

+        if (name == null || name.lastIndexOf('/') <= 0)

+            return false;

+        else if (import_ instanceof JavaImport) {

+            JavaImport javaImport = (JavaImport) import_;

+            

+            if (javaImport.getPackage().endsWith(".*")) {

+                String packageName = name.substring(0, name.lastIndexOf('/')).replace('/', '.');

+                String prefix = javaImport.getPackage().substring(0, javaImport.getPackage().length() -1);

+                if (packageName.startsWith(prefix)) {

+                    return true;

+                }

+            } else {

+                // 'name' is a resource : contains "/" as separators

+                // Get package name from resource name

+                String packageName = name.substring(0, name.lastIndexOf('/'));

+                 return packageName.equals(javaImport.getPackage().replaceAll("\\.", "/"));

+            }

+        } 

+        return false;

+    }

+    

+    /*

+     * Add an enumeration to a Collection

+     */

+    private <T extends Object> void addEnumerationToCollection(Collection<T> collection, Enumeration<T> enumeration) {

+        

+        while (enumeration.hasMoreElements())

+            collection.add(enumeration.nextElement());

+    }

+    

+    

+    @Override

+    public String toString() {

+        return "SCA Contribution ClassLoader location: " + contribution.getLocation() + " parent ClassLoader: " + getParent();

+    }

+    

+    

+}

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportImpl.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportImpl.java
new file mode 100644
index 0000000000..f35f35ac4c
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportImpl.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.java.impl;
+
+import org.apache.tuscany.sca.contribution.java.JavaExport;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+
+/**
+ * Implementation of a Java Import model
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaExportImpl implements JavaExport {
+    private ModelResolver modelResolver;
+
+    /**
+     * Java package being exported
+     */
+    private String packageName;
+
+    public JavaExportImpl() {
+        super();
+    }
+
+    public String getPackage() {
+        return this.packageName;
+    }
+
+    public void setPackage(String packageName) {
+        this.packageName = packageName;
+    }
+
+    public ModelResolver getModelResolver() {
+        return modelResolver;
+    }
+
+    public void setModelResolver(ModelResolver modelResolver) {
+        this.modelResolver = modelResolver;
+    }
+
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportModelResolver.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportModelResolver.java
new file mode 100644
index 0000000000..8d5412f6d7
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportModelResolver.java
@@ -0,0 +1,76 @@
+/*
+ * 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.java.impl;
+
+import org.apache.tuscany.sca.contribution.java.JavaExport;
+import org.apache.tuscany.sca.contribution.resolver.ClassReference;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+
+/**
+ * A model resolver for Java exports.
+ *
+ * @version $Rev$ $Date$
+ */
+public class JavaExportModelResolver implements ModelResolver {
+
+    private JavaExport export;
+    private ModelResolver resolver;
+    
+    public JavaExportModelResolver(JavaExport 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) {
+        if (!(unresolved instanceof ClassReference)) {
+            return unresolved;
+        }
+        
+        // Filter package name
+        ClassReference classReference = (ClassReference)unresolved;
+        String className = classReference.getClassName();
+        int d = className.lastIndexOf('.');
+        String packageName;
+        if (d != -1) {
+            packageName = className.substring(0, d);
+        } else {
+            packageName = "";
+        }
+        if (export.getPackage().equals(packageName)) {
+            
+            // Package matches the exported package, delegate to the
+            // contribution's resolver
+            return resolver.resolveModel(modelClass, unresolved);
+        } else {
+            
+            // Package is not exported, return the unresolved object 
+            return unresolved;
+        }
+    }
+
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportProcessor.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportProcessor.java
new file mode 100644
index 0000000000..9f6ff52289
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportProcessor.java
@@ -0,0 +1,143 @@
+/*
+ * 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.java.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.assembly.builder.impl.ProblemImpl;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.java.JavaExport;
+import org.apache.tuscany.sca.contribution.java.JavaImportExportFactory;
+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;
+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 Java Export
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaExportProcessor implements StAXArtifactProcessor<JavaExport> {
+    private static final String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0";
+    
+    private static final QName EXPORT_JAVA = new QName(SCA10_NS, "export.java");
+    
+    private static final String PACKAGE = "package";
+    
+    private final JavaImportExportFactory factory;
+    private final Monitor monitor;
+    
+    public JavaExportProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
+        super();
+        this.factory = modelFactories.getFactory(JavaImportExportFactory.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 = new ProblemImpl(this.getClass().getName(), "contribution-java-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
+	        monitor.problem(problem);
+    	 }
+     }
+
+    public QName getArtifactType() {
+        return EXPORT_JAVA;
+    }
+    
+    public Class<JavaExport> getModelType() {
+        return JavaExport.class;
+    }
+    
+    /**
+     * Process <export package=""/>
+     */
+    public JavaExport read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+        JavaExport javaExport = this.factory.createJavaExport();
+        QName element = null;
+        
+        while (reader.hasNext()) {
+            int event = reader.getEventType();
+            switch (event) {
+                case START_ELEMENT:
+                    element = reader.getName();
+                    
+                    // Read <export.java>
+                    if (EXPORT_JAVA.equals(element)) {
+                        String packageName = reader.getAttributeValue(null, PACKAGE);
+                        if (packageName == null) {
+                        	error("AttributePackageMissing", reader);
+                            //throw new ContributionReadException("Attribute 'package' is missing");
+                        } else                        
+                            javaExport.setPackage(packageName);
+                    }
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    if (EXPORT_JAVA.equals(reader.getName())) {
+                        return javaExport;
+                    }
+                    break;        
+            }
+            
+            //Read the next element
+            if (reader.hasNext()) {
+                reader.next();
+            }
+        }
+        
+        return javaExport;
+    }
+
+    public void write(JavaExport javaExport, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+        
+        // Write <export.java>
+        writer.writeStartElement(EXPORT_JAVA.getNamespaceURI(), EXPORT_JAVA.getLocalPart());
+        
+        if (javaExport.getPackage() != null) {
+            writer.writeAttribute(PACKAGE, javaExport.getPackage());
+        }
+        
+        writer.writeEndElement();
+    }
+
+    public void resolve(JavaExport javaExport, ModelResolver resolver) throws ContributionResolveException {
+        
+        if (javaExport.getPackage() != null)
+            // Initialize the export resolver
+            javaExport.setModelResolver(new JavaExportModelResolver(javaExport, resolver));
+    }
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportExportFactoryImpl.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportExportFactoryImpl.java
new file mode 100644
index 0000000000..e5dc397f4e
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportExportFactoryImpl.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.java.impl;

+

+import org.apache.tuscany.sca.contribution.java.JavaExport;

+import org.apache.tuscany.sca.contribution.java.JavaImport;

+import org.apache.tuscany.sca.contribution.java.JavaImportExportFactory;

+

+/**

+ * Java Import/Export Factory implementation

+ * 

+ * @version $Rev$ $Date$

+ */

+public class JavaImportExportFactoryImpl implements JavaImportExportFactory {

+

+    public JavaImport createJavaImport() {

+        return new JavaImportImpl();

+    }

+    

+    public JavaExport createJavaExport() {

+        return new JavaExportImpl();

+    }

+

+}

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportExportListener.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportExportListener.java
new file mode 100644
index 0000000000..47cdc9767b
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportExportListener.java
@@ -0,0 +1,157 @@
+/*

+ * 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.java.impl;

+

+import java.util.ArrayList;

+import java.util.HashSet;

+import java.util.List;

+import java.util.Set;

+

+import org.apache.tuscany.sca.contribution.Artifact;

+import org.apache.tuscany.sca.contribution.Contribution;

+import org.apache.tuscany.sca.contribution.ContributionFactory;

+import org.apache.tuscany.sca.contribution.Export;

+import org.apache.tuscany.sca.contribution.Import;

+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;

+import org.apache.tuscany.sca.contribution.java.JavaExport;

+import org.apache.tuscany.sca.contribution.java.JavaImport;

+import org.apache.tuscany.sca.contribution.resolver.DefaultImportAllModelResolver;

+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;

+import org.apache.tuscany.sca.contribution.service.ContributionListener;

+import org.apache.tuscany.sca.contribution.service.ContributionRepository;

+

+/**

+ * Java 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 JavaImportExportListener implements ContributionListener {

+    

+    private ContributionFactory contributionFactory;

+    

+    /**

+     * Constructs a new JavaImportExportListener

+     */

+    public JavaImportExportListener(ModelFactoryExtensionPoint modelFactories) {

+        contributionFactory = modelFactories.getFactory(ContributionFactory.class);

+    }

+    

+    /**

+     * 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 against all the other contributions

+     * Also set the exporting contributions used by contribution ClassLoaders to 

+     * match import/export for class loading.

+     */

+    public void contributionAdded(ContributionRepository repository, Contribution contribution) {

+        

+        // If the contribution does not contain sca-contribution.xml metadata

+        // (for example it's an existing JAR developed before SCA existed)

+        // export all its Java packages

+        ModelResolver modelResolver = contribution.getModelResolver();

+        

+        // Look for META-INF/sca-contribution.xml

+        Artifact artifact = contributionFactory.createArtifact();

+        artifact.setURI(Contribution.SCA_CONTRIBUTION_META);

+        artifact = modelResolver.resolveModel(Artifact.class, artifact);

+        if (artifact.getLocation() == null) {

+

+            // Look for META-INF/sca-contribution-generated.xml

+            artifact.setURI(Contribution.SCA_CONTRIBUTION_GENERATED_META);

+            artifact = modelResolver.resolveModel(Artifact.class, artifact);

+            if (artifact.getLocation() == null) {

+                

+                // No contribution metadata file was found, default to export all the

+                // Java packages found in the contribution

+                Set<String> packages = new HashSet<String>();

+                for (Artifact a: contribution.getArtifacts()) {

+                    String uri = a.getURI();

+                    if (uri.endsWith(".class")) {

+                        uri = uri.substring(0, uri.length() - 6);

+                        int d = uri.lastIndexOf('/');

+                        if (d != -1) {

+                            packages.add(uri.substring(0, d).replace('/', '.'));

+                        }

+                    }

+                }

+                

+                // Add Java export model objects for all the packages we found

+                for (String pkg: packages) {

+                    JavaExport export = new JavaExportImpl();

+                    export.setPackage(pkg);

+                    contribution.getExports().add(export);

+                }

+            }

+        }

+        

+        // 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 JavaImport) {

+                JavaImport javaImport = (JavaImport) import_;

+                

+                //Find a matching contribution

+                if(javaImport.getLocation() != null) {

+                    Contribution targetContribution = repository.getContribution(javaImport.getLocation());

+                    if (targetContribution != null) {

+                    

+                        // Find a matching contribution export

+                        for (Export export: targetContribution.getExports()) {

+                            if (export instanceof JavaExport) {

+                                JavaExport javaExport = (JavaExport)export;

+                                if (javaImport.getPackage().equals(javaExport.getPackage())) {

+                                    List<Contribution> exportingContributions = new ArrayList<Contribution>();

+                                    exportingContributions.add(targetContribution);

+                                    javaImport.setModelResolver(new JavaImportModelResolver(exportingContributions, javaExport.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 JavaImportModelResolver(repository.getContributions(), 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-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportImpl.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportImpl.java
new file mode 100644
index 0000000000..cc18d5f798
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportImpl.java
@@ -0,0 +1,110 @@
+/*
+ * 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.java.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.java.JavaExport;
+import org.apache.tuscany.sca.contribution.java.JavaImport;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+
+/**
+ * Implementation of a Java Import model
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaImportImpl implements JavaImport {
+    private ModelResolver modelResolver;
+    private List<Contribution> contributions;
+    /**
+     * Java package name being imported
+     */
+    private String packageName;
+    /**
+     * Contribution URI where the artifact is imported from
+     */
+    private String location;
+    
+    public JavaImportImpl() {
+        super();
+    }
+
+    public String getLocation() {
+        return this.location;
+    }
+
+    public void setLocation(String location) {
+        this.location = location;
+    }
+
+    public String getPackage() {
+        return this.packageName;
+    }
+
+    public void setPackage(String packageName) {
+        this.packageName = packageName;
+    }
+
+    public ModelResolver getModelResolver() {
+        return this.modelResolver;
+    }
+
+    public void setModelResolver(ModelResolver modelResolver) {
+        this.modelResolver = modelResolver;
+    }
+    public List<Contribution> getExportContributions() {
+        return contributions;
+    }
+
+    public void setExportContributions(List<Contribution> contributions) {
+        this.contributions = contributions;
+    }
+
+    /**
+     * Match a JavaImport to a given JavaExport based on :
+     *    location is not provided
+     *    import and export packages match
+     */
+    public boolean match(Export export) {
+        if(export instanceof JavaExport) {
+            JavaExport javaExport = (JavaExport)export;
+            String exportedPackage = javaExport.getPackage();
+            if (packageName.equals(exportedPackage)) {
+                return true;
+            } else {
+                if (packageName.endsWith(".*")) {
+                    String prefix = packageName.substring(0, packageName.length() - 1);
+                    if (exportedPackage.startsWith(prefix)) {
+                        return true;
+                    }
+                }
+            }
+        }
+        
+        return false;
+    }
+    
+    @Override
+    public String toString() {
+        return String.valueOf(packageName);
+    }
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportModelResolver.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportModelResolver.java
new file mode 100644
index 0000000000..484eddd222
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportModelResolver.java
@@ -0,0 +1,62 @@
+/*
+ * 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.java.impl;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+
+/**
+ * A JavaImport specific model resolver. This model resolver is temporary
+ * and provides the ContributionClassLoader with the list of exporting
+ * contributions that it currently needs.
+ * 
+ * FIXME Remove this class after the ContributionClassLoader is simplified
+ * and cleaned up.
+ *
+ * @version $Rev$ $Date$
+ */
+public class JavaImportModelResolver implements ModelResolver {
+
+    private ModelResolver modelResolver;
+    private List<Contribution> contributions;
+    
+    public JavaImportModelResolver(List<Contribution> contributions, ModelResolver modelResolver) {
+        this.modelResolver = modelResolver;
+        this.contributions = contributions;
+    }
+
+    public List<Contribution> getExportContributions() {
+        return contributions;
+    }
+    
+    public void addModel(Object resolved) {
+        modelResolver.addModel(resolved);
+    }
+
+    public Object removeModel(Object resolved) {
+        return modelResolver.removeModel(resolved);
+    }
+
+    public <T> T resolveModel(Class<T> modelClass, T unresolved) {
+        return modelResolver.resolveModel(modelClass, unresolved);
+    }
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportProcessor.java b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportProcessor.java
new file mode 100644
index 0000000000..d027d75b32
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportProcessor.java
@@ -0,0 +1,148 @@
+/*
+ * 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.java.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.assembly.builder.impl.ProblemImpl;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.java.JavaImport;
+import org.apache.tuscany.sca.contribution.java.JavaImportExportFactory;
+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;
+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 Java Imports
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaImportProcessor  implements StAXArtifactProcessor<JavaImport> {
+    private static final String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0";
+    
+    private static final QName IMPORT_JAVA = new QName(SCA10_NS, "import.java");
+
+    private static final String PACKAGE = "package";
+    private static final String LOCATION = "location";
+    
+    private final JavaImportExportFactory factory;
+    private final Monitor monitor;
+    
+    public JavaImportProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
+        super();
+        this.factory = modelFactories.getFactory(JavaImportExportFactory.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 = new ProblemImpl(this.getClass().getName(), "contribution-java-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
+	        monitor.problem(problem);
+    	 }
+     }
+    
+    public QName getArtifactType() {
+        return IMPORT_JAVA;
+    }
+    
+    public Class<JavaImport> getModelType() {
+        return JavaImport.class;
+    }
+
+    /**
+     * Process <import.java package="" location=""/>
+     */
+    public JavaImport read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+        JavaImport javaImport = this.factory.createJavaImport();
+        QName element = null;
+        
+        while (reader.hasNext()) {
+            int event = reader.getEventType();
+            switch (event) {
+                case START_ELEMENT:
+                    element = reader.getName();
+
+                    // Read <import.java>
+                    if (IMPORT_JAVA.equals(element)) {
+                        String packageName = reader.getAttributeValue(null, PACKAGE);
+                        if (packageName == null) {
+                        	error("AttributePackageMissing", reader);
+                            //throw new ContributionReadException("Attribute 'package' is missing");
+                        } else
+                        	javaImport.setPackage(packageName);
+                        
+                        String location = reader.getAttributeValue(null, LOCATION);                        
+                        javaImport.setLocation(location);
+                    }
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    if (IMPORT_JAVA.equals(reader.getName())) {
+                        return javaImport;
+                    }
+                    break;        
+            }
+            
+            // Read the next element
+            if (reader.hasNext()) {
+                reader.next();
+            }
+        }
+        
+        return javaImport;
+    }
+
+    public void write(JavaImport javaImport, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+        
+        // Write <import.java>
+        writer.writeStartElement(IMPORT_JAVA.getNamespaceURI(), IMPORT_JAVA.getLocalPart());
+        
+        if (javaImport.getPackage() != null) {
+            writer.writeAttribute(PACKAGE, javaImport.getPackage());
+        }
+        if (javaImport.getLocation() != null) {
+            writer.writeAttribute(LOCATION, javaImport.getLocation());
+        }
+        
+        writer.writeEndElement();
+    }
+
+
+    public void resolve(JavaImport model, ModelResolver resolver) throws ContributionResolveException {
+        
+    }
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.java.JavaImportExportFactory b/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.java.JavaImportExportFactory
new file mode 100644
index 0000000000..a293330a57
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.java.JavaImportExportFactory
@@ -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.java.impl.JavaImportExportFactoryImpl

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor b/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
new file mode 100644
index 0000000000..ac1fa9aade
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/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.java.impl.JavaImportProcessor;qname=http://www.osoa.org/xmlns/sca/1.0#import.java,model=org.apache.tuscany.sca.contribution.java.JavaImport
+org.apache.tuscany.sca.contribution.java.impl.JavaExportProcessor;qname=http://www.osoa.org/xmlns/sca/1.0#export.java,model=org.apache.tuscany.sca.contribution.java.JavaExport
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resolver.ModelResolver b/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resolver.ModelResolver
new file mode 100644
index 0000000000..c69eb40636
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/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.java.impl.ClassReferenceModelResolver;model=org.apache.tuscany.sca.contribution.resolver.ClassReference

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.service.ContributionListener b/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.service.ContributionListener
new file mode 100644
index 0000000000..7debb3d3c6
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.service.ContributionListener
@@ -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.java.impl.JavaImportExportListener

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/main/resources/contribution-java-validation-messages.properties b/branches/sca-java-20080910/modules/contribution-java/src/main/resources/contribution-java-validation-messages.properties
new file mode 100644
index 0000000000..70b58f75c0
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/main/resources/contribution-java-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.
+#
+#
+AttributePackageMissing = Attribute 'package' is missing
+
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/ClassReferenceArtifactResolverTestCase.java b/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/ClassReferenceArtifactResolverTestCase.java
new file mode 100644
index 0000000000..1405ad4bd5
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/ClassReferenceArtifactResolverTestCase.java
@@ -0,0 +1,70 @@
+ /*

+ * 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.java.impl;

+

+import junit.framework.TestCase;

+

+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;

+import org.apache.tuscany.sca.contribution.resolver.ClassReference;

+import org.apache.tuscany.sca.contribution.resolver.ExtensibleModelResolver;

+import org.apache.tuscany.sca.contribution.resolver.ModelResolverExtensionPoint;

+import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry;

+import org.apache.tuscany.sca.core.ExtensionPointRegistry;

+

+/**

+ * Test ClassReferenceArtifactResolver.

+ *

+ * @version $Rev: 560435 $ $Date: 2007-07-27 18:26:55 -0700 (Fri, 27 Jul 2007) $

+ */

+public class ClassReferenceArtifactResolverTestCase extends TestCase {

+    private ExtensibleModelResolver resolver;

+    

+    @Override

+    protected void setUp() throws Exception {

+        ExtensionPointRegistry extensionPoints = new DefaultExtensionPointRegistry();

+        

+        ModelResolverExtensionPoint resolvers = extensionPoints.getExtensionPoint(ModelResolverExtensionPoint.class);

+        resolvers.addResolver(ClassReference.class, ClassReferenceModelResolver.class);

+        ModelFactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(ModelFactoryExtensionPoint.class);

+        resolver = new ExtensibleModelResolver(null, resolvers, modelFactories);

+    }

+    

+    /**

+     * Test ClassReference resolution

+     * 

+     */

+    public void testResolveClass() {

+        ClassReference ref = new ClassReference(getClass().getName());

+        ClassReference clazz = resolver.resolveModel(ClassReference.class, ref);

+        assertFalse(clazz.isUnresolved());

+        assertTrue(clazz.getJavaClass() == getClass());

+    }

+    

+    /**

+     * Test ClassReference resolution of inexistent class

+     *

+     */

+    public void testUnresolvedClass() {

+        ClassReference ref = new ClassReference("NonExistentClass");

+        ClassReference clazz = resolver.resolveModel(ClassReference.class, ref);

+        assertTrue(clazz.isUnresolved());

+        assertTrue(clazz.getJavaClass() == null);

+    }

+}

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/ContributionClassLoaderTestCase.java b/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/ContributionClassLoaderTestCase.java
new file mode 100644
index 0000000000..3ae161642d
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/ContributionClassLoaderTestCase.java
@@ -0,0 +1,262 @@
+/*

+ * 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.java.impl;

+

+import java.io.File;

+import java.net.MalformedURLException;

+import java.net.URL;

+import java.security.AccessController;

+import java.security.PrivilegedAction;

+import java.util.ArrayList;

+

+import org.apache.tuscany.sca.contribution.Contribution;

+import org.apache.tuscany.sca.contribution.ContributionFactory;

+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;

+import org.apache.tuscany.sca.contribution.java.JavaExport;

+import org.apache.tuscany.sca.contribution.java.JavaImport;

+import org.apache.tuscany.sca.contribution.java.JavaImportExportFactory;

+import org.apache.tuscany.sca.core.DefaultExtensionPointRegistry;

+import org.apache.tuscany.sca.core.ExtensionPointRegistry;

+import org.junit.Assert;

+import org.junit.Before;

+import org.junit.Test;

+

+

+/**

+ * Test ContributionClassLoader.

+ *

+ */

+public class ContributionClassLoaderTestCase  {

+    

+    private ContributionFactory contributionFactory;

+    private JavaImportExportFactory javaImportExportFactory;

+    

+    @Before

+    public void setUp() throws Exception {

+        ExtensionPointRegistry extensionPoints = new DefaultExtensionPointRegistry();

+        ModelFactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(ModelFactoryExtensionPoint.class);

+        contributionFactory = modelFactories.getFactory(ContributionFactory.class);

+        javaImportExportFactory = modelFactories.getFactory(JavaImportExportFactory.class);

+    }

+    

+    private Contribution createContribution(String fileName) throws MalformedURLException {

+        Contribution contrib = contributionFactory.createContribution();

+        File contribDir = new File(fileName);        

+        contrib.setLocation(contribDir.toURI().toURL().toString());

+        ClassLoader contextClassLoader = AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {

+            public ClassLoader run() {

+                return Thread.currentThread().getContextClassLoader();

+            }

+        });           

+        contrib.setClassLoader(new ContributionClassLoader(contrib, contextClassLoader));

+        return contrib;

+    }

+    

+   

+    @Test

+    public void testClassLoadingFromContribution() throws ClassNotFoundException, MalformedURLException {

+        

+        Contribution contribA = createContribution("target/test-classes");

+        Contribution contribB = createContribution("target");

+        Contribution contribC = createContribution("target/test-classes/deployables/sample-calculator.jar");

+        

+        // Class present in contribution, also in parent. Class is loaded from parent

+        Class<?> testClassA = contribA.getClassLoader().loadClass(this.getClass().getName());        

+        Assert.assertNotNull(testClassA);

+        Assert.assertSame(this.getClass(), testClassA);

+        

+        // Class not present in contribution, but present in parent ClassLoader

+        Class<?> testClassB = contribB.getClassLoader().loadClass(this.getClass().getName());

+        Assert.assertNotNull(testClassB);

+        Assert.assertSame(this.getClass(), testClassB);

+        

+        // Class present in contribution, but not in parent

+        Class<?> testClassC = contribC.getClassLoader().loadClass("calculator.AddService");        

+        Assert.assertNotNull(testClassC);

+        

+        // Class not present in contribution or in parent

+        try {

+            contribA.getClassLoader().loadClass("NonExistent");

+            

+            Assert.assertTrue("ClassNotFoundException not thrown as expected", false);

+            

+        } catch (ClassNotFoundException e) {

+        }

+        

+        

+        

+    }

+    

+    @Test

+    public void testResourceLoadingFromContribution() throws ClassNotFoundException, MalformedURLException {

+        

+        Contribution contribA = createContribution("target/test-classes");

+        Contribution contribB = createContribution("target");

+        Contribution contribC = createContribution("target/test-classes/deployables/sample-calculator.jar");

+        

+        // Resource present in contribution, and in parent

+        URL resA = contribA.getClassLoader().getResource("deployables/sample-calculator.jar");

+        Assert.assertNotNull(resA);

+        

+        // Resource not present in contribution, but present in parent ClassLoader

+        URL resB = contribB.getClassLoader().getResource("deployables/sample-calculator.jar");

+        Assert.assertNotNull(resB);

+        

+        // Resource present in contribution, but not in parent

+        URL resC = contribC.getClassLoader().getResource("calculator/AddService.class");

+        Assert.assertNotNull(resC);        

+        

+        // Load Java class as resource from parent

+        String classResName = this.getClass().getName().replaceAll("\\.", "/") + ".class";

+        URL classResA = contribA.getClassLoader().getResource(classResName);

+        Assert.assertNotNull(classResA);

+               

+        // Non-existent resource

+        URL res = contribA.getClassLoader().getResource("deployables/NonExistent");

+        Assert.assertNull(res);

+        

+    }

+    

+    private static String getPackageName(Class<?> cls) {

+        String name = cls.getName();

+        int index = name.lastIndexOf('.');

+        return index == -1 ? "" : name.substring(0, index);

+    }

+

+    @Test

+    public void testClassLoadingFromImportedContribution() throws ClassNotFoundException, MalformedURLException {

+        

+        Contribution contribA = createContribution("target/test-classes");

+        Contribution contribB = createContribution("target");

+        Contribution contribC = createContribution("target/test-classes/deployables/sample-calculator.jar");

+        ArrayList<Contribution> exportContribList = new ArrayList<Contribution>();

+        exportContribList.add(contribA);

+        exportContribList.add(contribC);

+        

+        JavaImport import_ = javaImportExportFactory.createJavaImport();

+        import_.setPackage(getPackageName(getClass()));

+        import_.setModelResolver(new JavaImportModelResolver(exportContribList, null));

+        contribB.getImports().add(import_);

+        import_ = javaImportExportFactory.createJavaImport();

+        import_.setPackage("calculator");

+        import_.setModelResolver(new JavaImportModelResolver(exportContribList, null));

+        contribB.getImports().add(import_);

+        

+        JavaExport export = javaImportExportFactory.createJavaExport();

+        export.setPackage(getPackageName(getClass()));

+        contribA.getExports().add(export);

+        export = javaImportExportFactory.createJavaExport();

+        export.setPackage("calculator");

+        contribC.getExports().add(export);        

+        

+        // Load class from parent, class is also present in imported contribution. Class should

+        // be loaded from parent

+        Class<?> testClassB = contribB.getClassLoader().loadClass(this.getClass().getName());        

+        Assert.assertNotNull(testClassB);

+        Assert.assertSame(this.getClass(), testClassB);

+        

+        // Load class from parent, class is also present in parent. Class should be loaded

+        // from parent.

+        Class<?> testClassA = contribA.getClassLoader().loadClass(this.getClass().getName());        

+        Assert.assertNotNull(testClassA);

+        Assert.assertSame(this.getClass(), testClassA);

+        

+        // Imported class should be the same as the one loaded by the exporting contribution

+        Assert.assertSame(testClassA, testClassB);

+        

+        // Load class from imported contribution, class is not present in parent

+        Class<?> testClassB1 = contribB.getClassLoader().loadClass("calculator.AddService");

+        Assert.assertNotNull(testClassB1);

+        

+        // Imported class should be the same as the one loaded by the exporting contribution

+        Class<?> testClassC = contribC.getClassLoader().loadClass("calculator.AddService");

+        Assert.assertNotNull(testClassC);        

+        Assert.assertSame(testClassC, testClassB1);

+        

+

+        // Try to load class from package which is not explicitly imported - should throw ClassNotFoundException

+        try {

+            contribA.getClassLoader().loadClass("calculator.AddService");

+            

+            Assert.assertTrue("ClassNotFoundException not thrown as expected", false);

+            

+        } catch (ClassNotFoundException e) {

+        }

+        

+        // Try to load non-existent class from imported package - should throw ClassNotFoundException

+        try {

+            contribB.getClassLoader().loadClass(getPackageName(getClass()) + ".NonExistentClass");

+            

+            Assert.assertTrue("ClassNotFoundException not thrown as expected", false);

+            

+        } catch (ClassNotFoundException e) {

+        }

+        

+    }

+

+    @Test

+    public void testResourceLoadingFromImportedContribution() throws ClassNotFoundException, MalformedURLException {

+        

+        Contribution contribA = createContribution("target/test-classes");

+        Contribution contribB = createContribution("target");

+        Contribution contribC = createContribution("target/test-classes/deployables/sample-calculator.jar");

+        

+        ArrayList<Contribution> exportContribList = new ArrayList<Contribution>();

+        exportContribList.add(contribA);

+        exportContribList.add(contribC);

+        

+        JavaImport import_ = javaImportExportFactory.createJavaImport();

+        import_.setPackage(getPackageName(getClass()));

+        import_.setModelResolver(new JavaImportModelResolver(exportContribList, null));

+        contribB.getImports().add(import_);

+        JavaImport import1_ = javaImportExportFactory.createJavaImport();

+        import1_.setPackage("calculator");

+        import1_.setModelResolver(new JavaImportModelResolver(exportContribList, null));

+        contribB.getImports().add(import1_);

+        

+        JavaExport export = javaImportExportFactory.createJavaExport();

+        export.setPackage(getPackageName(getClass()));

+        contribA.getExports().add(export);

+        JavaExport export1 = javaImportExportFactory.createJavaExport();

+        export1.setPackage("calculator");

+        contribC.getExports().add(export1);

+

+        

+        // Load resource from parent

+        URL resB = contribB.getClassLoader().getResource("deployables/sample-calculator.jar"); 

+        Assert.assertNotNull(resB);

+        

+        // Load Java class as resource from imported contribution with JavaImport

+        String classResName = this.getClass().getName().replaceAll("\\.", "/") + ".class";               

+        URL classResB = contribB.getClassLoader().getResource(classResName);

+        Assert.assertNotNull(classResB);

+        

+        // Load Java class as resource from imported contribution with JavaImport

+        URL classResB1 = contribB.getClassLoader().getResource("calculator/AddService.class");

+        Assert.assertNotNull(classResB1);

+        

+        // Try to load resource not explicitly imported by contribution

+        URL classResA1 = contribA.getClassLoader().getResource("calculator/AddService.class");

+        Assert.assertNull(classResA1);

+        

+        

+    }

+

+}

diff --git a/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportProcessorTestCase.java b/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportProcessorTestCase.java
new file mode 100644
index 0000000000..0ec5bfba39
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/JavaExportProcessorTestCase.java
@@ -0,0 +1,103 @@
+/*
+ * 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.java.impl;
+
+import java.io.StringReader;
+
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamReader;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.contribution.java.JavaExport;
+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.core.DefaultExtensionPointRegistry;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.MonitorFactory;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.apache.tuscany.sca.monitor.impl.DefaultMonitorFactoryImpl;
+import org.apache.tuscany.sca.monitor.impl.DefaultMonitorImpl;
+
+/**
+ * Test JavaExportProcessorTestCase
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaExportProcessorTestCase extends TestCase {
+
+    private static final String VALID_XML =
+        "<?xml version=\"1.0\" encoding=\"ASCII\"?>" 
+            + "<export.java  xmlns=\"http://www.osoa.org/xmlns/sca/1.0\" xmlns:ns=\"http://ns\" package=\"org.apache.tuscany.sca.contribution.java\"/>";
+
+    private static final String INVALID_XML =
+        "<?xml version=\"1.0\" encoding=\"ASCII\"?>" 
+            + "<export.java  xmlns=\"http://www.osoa.org/xmlns/sca/1.0\"/>";
+
+    private XMLInputFactory inputFactory;
+    private StAXArtifactProcessor<Object> staxProcessor;
+    private Monitor monitor;
+
+    @Override
+    protected void setUp() throws Exception {
+        ExtensionPointRegistry extensionPoints = new DefaultExtensionPointRegistry();
+        inputFactory = XMLInputFactory.newInstance();
+        // Create a monitor
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        MonitorFactory monitorFactory = new DefaultMonitorFactoryImpl();  
+        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
+     */
+    public void testLoad() throws Exception {
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(VALID_XML));
+        JavaExport javaExport = (JavaExport)staxProcessor.read(reader);
+        assertEquals("org.apache.tuscany.sca.contribution.java", javaExport.getPackage());
+    }
+
+    /**
+     * Test loading an INVALID export element from a contribution metadata stream
+     * @throws Exception
+     */
+    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 = ((DefaultMonitorImpl)monitor).getLastLoggedProblem();           
+        assertNotNull(problem);
+        assertEquals("AttributePackageMissing", problem.getMessageId());
+    }    
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportProcessorTestCase.java b/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportProcessorTestCase.java
new file mode 100644
index 0000000000..9e43b744cf
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/test/java/org/apache/tuscany/sca/contribution/java/impl/JavaImportProcessorTestCase.java
@@ -0,0 +1,105 @@
+/*
+ * 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.java.impl;
+
+import java.io.StringReader;
+
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamReader;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.contribution.java.JavaImport;
+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.core.DefaultExtensionPointRegistry;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.MonitorFactory;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.apache.tuscany.sca.monitor.impl.DefaultMonitorFactoryImpl;
+import org.apache.tuscany.sca.monitor.impl.DefaultMonitorImpl;
+
+/**
+ * Test JavaImportProcessorTestCase
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaImportProcessorTestCase extends TestCase {
+
+    private static final String VALID_XML =
+        "<?xml version=\"1.0\" encoding=\"ASCII\"?>" 
+            + "<import.java  xmlns=\"http://www.osoa.org/xmlns/sca/1.0\" xmlns:ns=\"http://ns\" package=\"org.apache.tuscany.sca.contribution.java\" location=\"sca://contributions/001\"/>";
+
+    private static final String INVALID_XML =
+        "<?xml version=\"1.0\" encoding=\"ASCII\"?>" 
+            + "<import.java  xmlns=\"http://www.osoa.org/xmlns/sca/1.0\" xmlns:ns=\"http://ns\" location=\"sca://contributions/001\"/>";
+
+    private XMLInputFactory inputFactory;
+    private StAXArtifactProcessor<Object> staxProcessor;
+    private Monitor monitor;
+
+    @Override
+    protected void setUp() throws Exception {
+        ExtensionPointRegistry extensionPoints = new DefaultExtensionPointRegistry();
+        inputFactory = XMLInputFactory.newInstance();
+        // Create a monitor
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        MonitorFactory monitorFactory = new DefaultMonitorFactoryImpl();  
+        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
+     */
+    public void testLoad() throws Exception {
+        XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(VALID_XML));
+        JavaImport javaImport = (JavaImport)staxProcessor.read(reader);
+        
+        assertEquals("org.apache.tuscany.sca.contribution.java", javaImport.getPackage());
+        assertEquals("sca://contributions/001", javaImport.getLocation());
+    }
+
+    /**
+     * Test loading a INVALID import element from a contribution metadata stream
+     * @throws Exception
+     */
+    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 = ((DefaultMonitorImpl)monitor).getLastLoggedProblem();           
+        assertNotNull(problem);
+        assertEquals("AttributePackageMissing", problem.getMessageId());
+    }    
+}
diff --git a/branches/sca-java-20080910/modules/contribution-java/src/test/resources/deployables/sample-calculator.jar b/branches/sca-java-20080910/modules/contribution-java/src/test/resources/deployables/sample-calculator.jar
new file mode 100644
index 0000000000..0ca3a1b781
--- /dev/null
+++ b/branches/sca-java-20080910/modules/contribution-java/src/test/resources/deployables/sample-calculator.jar