TUSCANY-2972 instigate contribution type specific class loading to allow the JEE classloader to be used independently of jar, zip, dir classloading schemes

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@767015 13f79535-47bb-0310-9956-ffa450edef68

5 files changed, 452 insertions, 333 deletions

diff --git a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/EARContributionClassLoader.java b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/EARContributionClassLoader.java
new file mode 100644
index 0000000000..87cdaa2cf3
--- /dev/null
+++ b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/EARContributionClassLoader.java
@@ -0,0 +1,201 @@
+/*
+ * 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.jee.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.Collection;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.List;
+
+import org.apache.tuscany.sca.contribution.Artifact;
+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;
+import org.apache.tuscany.sca.contribution.jee.EjbModuleInfo;
+import org.apache.tuscany.sca.contribution.jee.JavaEEApplicationInfo;
+import org.apache.tuscany.sca.contribution.jee.WebModuleInfo;
+
+
+public class EARContributionClassLoader extends URLClassLoader {
+    
+    private Contribution contribution;
+    private List<EjbModuleInfo> ejbModules = new ArrayList<EjbModuleInfo>();
+    
+    /**
+     * Constructor for contribution ClassLoader 
+     * 
+     * @param contribution
+     * @param parent
+     * @throws MalformedURLException
+     */
+    public EARContributionClassLoader(Contribution contribution, final ClassLoader parent) {
+        super(new URL[0], parent);
+        
+        this.contribution = contribution;
+        
+        // get the classloaders for any EAR archive that is a contribution
+        for (Artifact artifact : contribution.getArtifacts()){
+            if (artifact.getModel() instanceof JavaEEApplicationInfo){
+                JavaEEApplicationInfo jeeAppInfo = (JavaEEApplicationInfo)artifact.getModel();
+                // TODO - won't these all have the same classloader?
+                ejbModules.addAll(jeeAppInfo.getEjbModuleInfos().values());
+            }
+        }
+             
+    }
+    
+    /* (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;
+        ClassNotFoundException cne = null;
+                
+        // TODO - Won't these classloaders all be the same?
+        for (EjbModuleInfo ejbModuleInfo : ejbModules){
+            try {
+                clazz = ejbModuleInfo.getModuleClassloader().loadClass(className);
+            } catch (ClassNotFoundException e) {
+                cne = e;
+            }
+            
+            if (clazz != null){
+                break;
+            }
+        }        
+        
+        if (clazz == null){
+            throw cne;
+        }
+             
+        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.lang.ClassLoader#getResource(java.lang.String)
+     * 
+     * Find a resource. 
+     * Search path for resource:
+     *     Parent ClassLoader
+     *     This contribution
+     */
+    @Override
+    public URL getResource(String resName) {
+ 
+        URL resource  = null;
+        
+        if (this.getParent() != null) {
+            resource  = this.getParent().getResource(resName);
+        }        
+        if (resource == null) {
+// TODO Which classloader?            
+//           resource  = webModuleInfo.getModuleClassloader().getResource(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 = new HashSet<URL>();
+  
+// TODO - which classloader
+//        addEnumerationToCollection(resourceSet, webModuleInfo.getModuleClassloader().getResources(resName));
+        addEnumerationToCollection(resourceSet, super.getResources(resName));
+        
+        return Collections.enumeration(resourceSet);
+    }
+       
+    /*
+     * 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 JEE ClassLoader, parent ClassLoader: " + getParent();
+    }
+    
+    
+}
diff --git a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoaderProvider.java b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/EARContributionClassLoaderProvider.java
index 73745fccef..5ea7dc55f7 100644
--- a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoaderProvider.java
+++ b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/EARContributionClassLoaderProvider.java
@@ -20,6 +20,7 @@
 package org.apache.tuscany.sca.contribution.jee.impl;
 
 import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.PackageType;
 import org.apache.tuscany.sca.contribution.java.ContributionClassLoaderProvider;
 import org.apache.tuscany.sca.contribution.java.impl.ContributionClassLoader;
 import org.apache.tuscany.sca.core.ExtensionPointRegistry;
@@ -27,15 +28,22 @@ import org.apache.tuscany.sca.core.ExtensionPointRegistry;
 /**
  * The default implementation of the ContributionClassLoaderProvider
  */
-public class JEEClassLoaderProvider implements ContributionClassLoaderProvider {
+public class EARContributionClassLoaderProvider implements ContributionClassLoaderProvider {
 
-    public JEEClassLoaderProvider(ExtensionPointRegistry registry) {
+    public EARContributionClassLoaderProvider() {
         super();
     }
+    
+    public String getContributionType() {
+        return PackageType.EAR;
+    }
 
     public ClassLoader getClassLoader(Contribution contribution, ClassLoader parent) {
+        // TODO - This is not quite right at the CCL will load up the nested jars
+        //        also. However we do need to pick up the import processing so 
+        //        need a bit of a refactor
         ContributionClassLoader ccl = new ContributionClassLoader(contribution, parent);
-        return new JEEClassLoader(contribution, ccl);
+        return new EARContributionClassLoader(contribution, ccl);
     }
 
 }
diff --git a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java
deleted file mode 100644
index bc009c50d7..0000000000
--- a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- * 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.jee.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.Collection;
-import java.util.Collections;
-import java.util.Enumeration;
-import java.util.HashSet;
-import java.util.List;
-
-import org.apache.tuscany.sca.contribution.Artifact;
-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;
-import org.apache.tuscany.sca.contribution.jee.EjbModuleInfo;
-import org.apache.tuscany.sca.contribution.jee.JavaEEApplicationInfo;
-import org.apache.tuscany.sca.contribution.jee.WebModuleInfo;
-
-
-public class JEEClassLoader extends URLClassLoader {
-    
-    private Contribution contribution;
-    private List<WebModuleInfo> webModules = new ArrayList<WebModuleInfo>();
-    private List<EjbModuleInfo> ejbModules = new ArrayList<EjbModuleInfo>();
-    
-    /**
-     * Constructor for contribution ClassLoader 
-     * 
-     * @param contribution
-     * @param parent
-     * @throws MalformedURLException
-     */
-    public JEEClassLoader(Contribution contribution, final ClassLoader parent) {
-        super(new URL[0], parent);
-        
-        this.contribution = contribution;
-        
-        // get the classloaders for any JEE archives references by the contribution
-        // TODO extend to case where JEE archive is outside the contribution
-        for (Artifact artifact : contribution.getArtifacts()){
-            if (artifact.getModel() instanceof WebModuleInfo){
-                WebModuleInfo webModuleInfo = (WebModuleInfo)artifact.getModel();
-                webModules.add(webModuleInfo);
-            } else if (artifact.getModel() instanceof EjbModuleInfo){
-                EjbModuleInfo ejbModuleInfo = (EjbModuleInfo)artifact.getModel();
-                ejbModules.add(ejbModuleInfo);
-            } else if (artifact.getModel() instanceof JavaEEApplicationInfo){
-                JavaEEApplicationInfo jeeAppInfo = (JavaEEApplicationInfo)artifact.getModel();
-                webModules.addAll(jeeAppInfo.getWebModuleInfos().values());
-                ejbModules.addAll(jeeAppInfo.getEjbModuleInfos().values());
-            }
-        }
-             
-    }
-    
-    /* (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;
-        ClassNotFoundException cne = null;
-        
-        // ask each of the JEE archive classloaders in turn
-        // TODO This is a bad thing as two archives may have the same class
-        //       but don't know how to avoid this
-        for (WebModuleInfo webModuleInfo : webModules){
-            try {
-                clazz = webModuleInfo.getModuleClassloader().loadClass(className);
-            } catch (ClassNotFoundException e) {
-                cne = e;
-            }
-            
-            if (clazz != null){
-                break;
-            }
-        }
-        
-        // We would expect the webapp classloaders to have an ejb classloader as parent
-        // but we have to go through the ebj module classloaders here just in case
-        // there are no webapps
-        for (EjbModuleInfo ejbModuleInfo : ejbModules){
-            try {
-                clazz = ejbModuleInfo.getModuleClassloader().loadClass(className);
-            } catch (ClassNotFoundException e) {
-                cne = e;
-            }
-            
-            if (clazz != null){
-                break;
-            }
-        }        
-        
-        if (clazz == null){
-            throw cne;
-        }
-             
-        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 = null;
-/*        
-        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 JEEClassLoader) {
-
-                            for (Export export : exportingContribution.getExports()) {
-                                if (import_.match(export)) {
-                                    url = ((JEEClassLoader)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 JEEClassLoader) {
-
-                        for (Export export : exportingContribution.getExports()) {
-                            if (import_.match(export)) {
-                                addEnumerationToCollection(resources,
-                                        ((JEEClassLoader)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);
-    }
-    
-    
-    /*
-     * 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 JEE ClassLoader, parent ClassLoader: " + getParent();
-    }
-    
-    
-}
diff --git a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/WARContributionClassLoader.java b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/WARContributionClassLoader.java
new file mode 100644
index 0000000000..4047371583
--- /dev/null
+++ b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/WARContributionClassLoader.java
@@ -0,0 +1,191 @@
+/*
+ * 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.jee.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.Collection;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.List;
+
+import org.apache.tuscany.sca.contribution.Artifact;
+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;
+import org.apache.tuscany.sca.contribution.jee.EjbModuleInfo;
+import org.apache.tuscany.sca.contribution.jee.JavaEEApplicationInfo;
+import org.apache.tuscany.sca.contribution.jee.WebModuleInfo;
+
+
+public class WARContributionClassLoader extends URLClassLoader {
+    
+    private Contribution contribution;
+    private WebModuleInfo webModuleInfo = null;
+    
+    /**
+     * Constructor for contribution ClassLoader 
+     * 
+     * @param contribution
+     * @param parent
+     * @throws MalformedURLException
+     */
+    public WARContributionClassLoader(Contribution contribution, final ClassLoader parent) {
+        super(new URL[0], parent);
+        
+        this.contribution = contribution;
+        
+        // get the classloaders for any WAR archive that is a contribution
+        // TODO extend to case where JEE archive is outside the contribution
+        for (Artifact artifact : contribution.getArtifacts()){
+            if (artifact.getModel() instanceof WebModuleInfo){
+                webModuleInfo = (WebModuleInfo)artifact.getModel();
+                break;
+            } 
+        }
+             
+    }
+    
+    /* (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;
+        ClassNotFoundException cne = null;
+        
+        try {
+            clazz = webModuleInfo.getModuleClassloader().loadClass(className);
+        } catch (ClassNotFoundException e) {
+            cne = e;
+        }               
+        
+        if (clazz == null){
+            throw cne;
+        }
+             
+        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.lang.ClassLoader#getResource(java.lang.String)
+     * 
+     * Find a resource. 
+     * Search path for resource:
+     *     Parent ClassLoader
+     *     This contribution
+     */
+    @Override
+    public URL getResource(String resName) {
+ 
+        URL resource  = null;
+        
+        if (this.getParent() != null) {
+            resource  = this.getParent().getResource(resName);
+        }        
+        if (resource == null)
+            resource  = webModuleInfo.getModuleClassloader().getResource(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 = new HashSet<URL>();
+        
+        addEnumerationToCollection(resourceSet, webModuleInfo.getModuleClassloader().getResources(resName));
+        addEnumerationToCollection(resourceSet, super.getResources(resName));
+        
+        return Collections.enumeration(resourceSet);
+    }
+    
+    
+    /*
+     * 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 WAR ClassLoader, parent ClassLoader: " + getParent();
+    }
+    
+    
+}
diff --git a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/WARContributionClassLoaderProvider.java b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/WARContributionClassLoaderProvider.java
new file mode 100644
index 0000000000..cfa8dd0d58
--- /dev/null
+++ b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/WARContributionClassLoaderProvider.java
@@ -0,0 +1,49 @@
+/*
+ * 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.jee.impl;
+
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.PackageType;
+import org.apache.tuscany.sca.contribution.java.ContributionClassLoaderProvider;
+import org.apache.tuscany.sca.contribution.java.impl.ContributionClassLoader;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+
+/**
+ * The default implementation of the ContributionClassLoaderProvider
+ */
+public class WARContributionClassLoaderProvider implements ContributionClassLoaderProvider {
+
+    public WARContributionClassLoaderProvider() {
+        super();
+    }
+    
+    public String getContributionType() {
+        return PackageType.EAR;
+    }
+
+    public ClassLoader getClassLoader(Contribution contribution, ClassLoader parent) {
+        // TODO - This is not quite right at the CCL will load up the nested jars
+        //        also. However we do need to pick up the import processing so 
+        //        need a bit of a refactor
+        ContributionClassLoader ccl = new ContributionClassLoader(contribution, parent);
+        return new WARContributionClassLoader(contribution, ccl);
+    }
+
+}