Start porting Implementation Widget to 2.x

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@835227 13f79535-47bb-0310-9956-ffa450edef68

12 files changed, 950 insertions, 0 deletions

diff --git a/java/sca/modules/web-javascript/LICENSE b/java/sca/modules/web-javascript/LICENSE
new file mode 100644
index 0000000000..8aa906c321
--- /dev/null
+++ b/java/sca/modules/web-javascript/LICENSE
@@ -0,0 +1,205 @@
+
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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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+      Contribution(s) alone or by combination of their Contribution(s)
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+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
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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
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (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
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+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
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+          the Derivative Works; and
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+      (d) If the Work includes a "NOTICE" text file as part of its
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+      may provide additional or different license terms and conditions
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+      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.
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+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
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diff --git a/java/sca/modules/web-javascript/NOTICE b/java/sca/modules/web-javascript/NOTICE
new file mode 100644
index 0000000000..25bb89c9b2
--- /dev/null
+++ b/java/sca/modules/web-javascript/NOTICE
@@ -0,0 +1,6 @@
+${pom.name}
+Copyright (c) 2005 - 2009 The Apache Software Foundation
+
+This product includes software developed by
+The Apache Software Foundation (http://www.apache.org/).
+
diff --git a/java/sca/modules/web-javascript/pom.xml b/java/sca/modules/web-javascript/pom.xml
new file mode 100644
index 0000000000..62518e3406
--- /dev/null
+++ b/java/sca/modules/web-javascript/pom.xml
@@ -0,0 +1,67 @@
+<?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>1.6-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>tuscany-web-javascript</artifactId>
+    <name>Apache Tuscany SCA Web JavaScript</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.tuscany.sca</groupId>
+            <artifactId>tuscany-core</artifactId>
+            <version>1.6-SNAPSHOT</version>
+        </dependency>
+
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.5</version>
+            <scope>test</scope>
+        </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.core.web</Bundle-SymbolicName>
+                        <Bundle-Description>${pom.name}</Bundle-Description>
+                        <Export-Package>org.apache.tuscany.sca.core.web</Export-Package>
+                        <Import-Package>org.apache.tuscany.sca.assembly.xml;version="1.4", *</Import-Package>
+                    </instructions>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/ComponentJavaScriptGenerator.java b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/ComponentJavaScriptGenerator.java
new file mode 100644
index 0000000000..adfe449912
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/ComponentJavaScriptGenerator.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.web.javascript;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+
+
+/**
+ * Widget component script generator interface
+ * This generates the necessary JavaScript client code into a single JavaScript per component
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface ComponentJavaScriptGenerator {
+    
+    /**
+     * Return the QName that identify the Component script generator
+     * This is used to identify different generators supporting different JavaScript frameworks
+     * 
+     * @return The QName
+     */
+    QName getQName();
+    
+    /**
+     * Generate the Java Script code for a given component
+     *   - generate/append client proxyies as needed
+     *   - generate tuscany namespace as needed
+     *   - generate properties for JavaScript injection
+     *   - generate references for JavaScript injection
+     *     
+     * @param component The SCA Component to be used 
+     * @param pw A Print Writer where the script should be written to 
+     * @throws IOException
+     */
+    void generateJavaScriptCode(RuntimeComponent component, PrintWriter pw) throws IOException;
+
+}
diff --git a/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/ComponentJavaScriptGeneratorExtensionPoint.java b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/ComponentJavaScriptGeneratorExtensionPoint.java
new file mode 100644
index 0000000000..ac160d7d1a
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/ComponentJavaScriptGeneratorExtensionPoint.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.web.javascript;
+
+import java.util.List;
+
+import javax.xml.namespace.QName;
+
+/**
+ * Widget component script generator extension pointinterface
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface ComponentJavaScriptGeneratorExtensionPoint {
+
+    /**
+     * Add a component script generator
+     * @param componentScriptGenerator
+     */
+    void addComponentJavaScriptGenerator(ComponentJavaScriptGenerator componentScriptGenerator);
+
+    /**
+     * Remove a component script generator
+     * @param componentScriptGenerator
+     */
+    void removeComponentJavaScriptGenerator(ComponentJavaScriptGenerator componentScriptGenerator);
+
+    /**
+     * Get a component scrpt generator instance based on QName
+     * @param bindingName
+     * @return
+     */
+    ComponentJavaScriptGenerator getComponentJavaScriptGenerator(QName bindingName);    
+    
+    /**
+     * Get a list of component script generator instances
+     */
+    List<ComponentJavaScriptGenerator> getComponentJavaScriptGenerators();
+}
diff --git a/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/DefaultComponentJavaScriptGeneratorExtensionPoint.java b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/DefaultComponentJavaScriptGeneratorExtensionPoint.java
new file mode 100644
index 0000000000..79ddab1c60
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/DefaultComponentJavaScriptGeneratorExtensionPoint.java
@@ -0,0 +1,154 @@
+/*
+ * 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.web.javascript;
+
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
+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.Problem.Severity;
+import org.apache.tuscany.sca.monitor.impl.ProblemImpl;
+
+
+/**
+ * Default extension point for widget component script generator
+ * 
+ * @version $Rev$ $Date$
+ */
+public class DefaultComponentJavaScriptGeneratorExtensionPoint implements ComponentJavaScriptGeneratorExtensionPoint {
+    private final List<ComponentJavaScriptGenerator> generators = new ArrayList<ComponentJavaScriptGenerator>();
+    private final Map<QName, ComponentJavaScriptGenerator> generatorsByQName = new HashMap<QName, ComponentJavaScriptGenerator>();
+
+    private ExtensionPointRegistry extensionPoints;
+    private Monitor monitor = null;
+
+    private boolean loaded = false;
+
+    public DefaultComponentJavaScriptGeneratorExtensionPoint(ExtensionPointRegistry extensionPoints) {
+        this.extensionPoints = extensionPoints;
+        
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        MonitorFactory monitorFactory = utilities.getUtility(MonitorFactory.class);
+        if (monitorFactory != null) {
+                this.monitor = monitorFactory.createMonitor();
+        }
+    }
+    
+    /**
+     * Report a exception.
+     * 
+     * @param problems
+     * @param message
+     * @param model
+    */
+    private void error(String message, Object model, Exception ex) {
+        if (monitor != null) {
+            Problem problem = new ProblemImpl(this.getClass().getName(), "web-javascript-validation-messages", Severity.ERROR, model, message, ex);
+            monitor.problem(problem);
+        }        
+    }
+    
+    public void addComponentJavaScriptGenerator(ComponentJavaScriptGenerator componentScriptGenerator) {
+        if (componentScriptGenerator.getQName() != null) {
+            generatorsByQName.put(componentScriptGenerator.getQName(), componentScriptGenerator);
+        }
+        
+        generators.add(componentScriptGenerator);
+    }
+
+    public void removeComponentJavaScriptGenerator(ComponentJavaScriptGenerator componentScriptGenerator) {
+        if (componentScriptGenerator.getQName() != null) {
+            generatorsByQName.remove(componentScriptGenerator.getQName());
+        }
+        
+        generators.remove(componentScriptGenerator);
+    }
+    
+
+    public ComponentJavaScriptGenerator getComponentJavaScriptGenerator(QName bindingName) {
+        loadFactories();
+        return generatorsByQName.get(bindingName);
+    }
+    
+    public List<ComponentJavaScriptGenerator> getComponentJavaScriptGenerators() {
+        loadFactories();
+        return this.generators;
+    }
+    
+    /**
+     * Private Utility methods
+     */
+    
+    
+    /**
+     * Lazily load artifact processors registered in the extension point.
+     */
+    @SuppressWarnings("unchecked")
+    private synchronized void loadFactories() {
+        if (loaded) {
+            return;
+        }
+
+        // Get the proxy factories declarations
+        Set<ServiceDeclaration> factoryDeclarations = null;
+        try {
+            factoryDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(ComponentJavaScriptGenerator.class);
+        } catch (IOException e) {
+            IllegalStateException ie = new IllegalStateException(e);
+            error("IllegalStateException", factoryDeclarations, ie);
+            throw ie;
+        }
+
+        for (ServiceDeclaration processorDeclaration : factoryDeclarations) {
+            // Create a factory, and register it
+            ComponentJavaScriptGenerator generator = null;
+            try {
+                Class generatorClass = processorDeclaration.loadClass();
+                
+                Constructor<ComponentJavaScriptGenerator> constructor = generatorClass.getConstructor(ExtensionPointRegistry.class);
+                generator = constructor.newInstance(extensionPoints);
+                
+            } catch (Exception e) {
+                IllegalStateException ie = new IllegalStateException(e);
+                error("IllegalStateException", generator, ie);
+                throw ie;
+            }
+
+            addComponentJavaScriptGenerator(generator);
+        }
+
+        loaded = true;
+    }
+
+
+}
diff --git a/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/DefaultJavascriptProxyFactoryExtensionPoint.java b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/DefaultJavascriptProxyFactoryExtensionPoint.java
new file mode 100644
index 0000000000..6ec7577d52
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/DefaultJavascriptProxyFactoryExtensionPoint.java
@@ -0,0 +1,225 @@
+/*
+ * 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.web.javascript;
+
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
+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.Problem.Severity;
+import org.apache.tuscany.sca.monitor.impl.ProblemImpl;
+
+/**
+ * Default extension point for javascript proxy factories
+ * 
+ * @version $Rev$ $Date$
+ */
+public class DefaultJavascriptProxyFactoryExtensionPoint implements JavascriptProxyFactoryExtensionPoint {
+    private final Map<QName, JavascriptProxyFactory> factoriesByQName = new HashMap<QName, JavascriptProxyFactory>();
+    private final Map<Class<?>, JavascriptProxyFactory> factoriesByType = new HashMap<Class<?>, JavascriptProxyFactory>();
+    
+    private Monitor monitor = null;
+    
+    private boolean loaded = false;
+    
+    public DefaultJavascriptProxyFactoryExtensionPoint(ExtensionPointRegistry extensionPoints) {
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        MonitorFactory monitorFactory = utilities.getUtility(MonitorFactory.class);
+        if (monitorFactory != null) {
+                this.monitor = monitorFactory.createMonitor();
+        }
+    }
+
+    /**
+     * Report a exception.
+     * 
+     * @param problems
+     * @param message
+     * @param model
+    */
+    private void error(String message, Object model, Exception ex) {
+        if (monitor != null) {
+            Problem problem = new ProblemImpl(this.getClass().getName(), "web-javascript-validation-messages", Severity.ERROR, model, message, ex);
+            monitor.problem(problem);
+        }        
+    }
+    
+    public void addProxyFactory(JavascriptProxyFactory javascriptProxyfactory) {
+        if (javascriptProxyfactory.getModelType() != null) {
+            factoriesByType.put(javascriptProxyfactory.getModelType(), javascriptProxyfactory);
+        }
+        if (javascriptProxyfactory.getQName() != null) {
+            factoriesByQName.put(javascriptProxyfactory.getQName(), javascriptProxyfactory);
+        }
+    }
+
+    public void removeProxyFactory(JavascriptProxyFactory javascriptProxyfactory) {
+        if (javascriptProxyfactory.getModelType() != null) {
+            factoriesByType.remove(javascriptProxyfactory.getModelType());
+        }
+        if (javascriptProxyfactory.getQName() != null) {
+            factoriesByQName.remove(javascriptProxyfactory.getQName());
+        }
+    }
+
+    public JavascriptProxyFactory getProxyFactory(QName bindingName) {
+        loadFactories();
+        return factoriesByQName.get(bindingName);
+    }
+
+    public JavascriptProxyFactory getProxyFactory(Class<?> bindingType) {
+        loadFactories();
+        Class<?>[] classes = bindingType.getInterfaces();
+        for (Class<?> c : classes) {
+            JavascriptProxyFactory proxyFactory = factoriesByType.get(c);
+            if (proxyFactory != null) {
+                return proxyFactory;
+            }
+        }
+
+        //here we didn't find the proxy factory for the biding
+        JavascriptProxyFactory factory = null;
+        if (bindingType.isInterface()) {
+            // Dynamically load a factory class declared under META-INF/services 
+            try {
+                Class<?> factoryClass = ServiceDiscovery.getInstance().loadFirstServiceClass(bindingType);
+                if (factoryClass != null) {
+
+                    try {
+                        // Default empty constructor
+                        Constructor<?> constructor = factoryClass.getConstructor();
+                        factory = (JavascriptProxyFactory) constructor.newInstance();
+                    } catch (NoSuchMethodException e) {
+
+                        // Constructor taking the model factory extension point
+                        Constructor<?> constructor = factoryClass.getConstructor(ModelFactoryExtensionPoint.class);
+                        factory = (JavascriptProxyFactory) constructor.newInstance(this);
+                    }
+
+                    // Cache the loaded factory
+                    addProxyFactory(factory);
+                }
+            } catch (Exception e) {
+                throw new IllegalArgumentException(e);
+            }
+        } else {
+
+            // Call the newInstance static method on the factory abstract class
+            try {
+                factory = (JavascriptProxyFactory) ServiceDiscovery.getInstance().newFactoryClassInstance(bindingType);
+            } catch (Exception e) {
+                throw new IllegalArgumentException(e);
+            }
+
+            // Cache the factory
+            addProxyFactory(factory);
+        }
+    
+        return factory;
+    }
+    
+    /**
+     * Private Utility methods
+     */
+    
+    /**
+     * Returns a QName object from a QName expressed as {ns}name
+     * or ns#name.
+     * 
+     * @param qname
+     * @return
+     */
+    private static QName getQName(String qname) {
+        if (qname == null) {
+            return null;
+        }
+        qname = qname.trim();
+        if (qname.startsWith("{")) {
+            int h = qname.indexOf('}');
+            if (h != -1) {
+                return new QName(qname.substring(1, h), qname.substring(h + 1));
+            }
+        } else {
+            int h = qname.indexOf('#');
+            if (h != -1) {
+                return new QName(qname.substring(0, h), qname.substring(h + 1));
+            }
+        }
+        throw new IllegalArgumentException("Invalid qname: "+qname);
+    }    
+    
+    /**
+     * Lazily load artifact processors registered in the extension point.
+     */
+    private synchronized void loadFactories() {
+        if (loaded) {
+            return;
+        }
+
+        // Get the proxy factories declarations
+        Set<ServiceDeclaration> factoryDeclarations = null;
+        try {
+            factoryDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(JavascriptProxyFactory.class);
+        } catch (IOException e) {
+            IllegalStateException ie = new IllegalStateException(e);
+            error("IllegalStateException", factoryDeclarations, ie);
+            throw ie;
+        }
+
+        for (ServiceDeclaration processorDeclaration : factoryDeclarations) {
+            Map<String, String> attributes = processorDeclaration.getAttributes();
+
+            // Load a StAX artifact processor
+
+            // Get the model QName
+            QName artifactType = getQName(attributes.get("qname"));
+
+            // Get the model class name
+            String modelTypeName = attributes.get("model");
+
+            // Create a factory, and register it
+            JavascriptProxyFactory proxyFactory = null;
+            try {
+                proxyFactory = (JavascriptProxyFactory) processorDeclaration.loadClass().newInstance();
+            } catch (Exception e) {
+                IllegalStateException ie = new IllegalStateException(e);
+                error("IllegalStateException", proxyFactory, ie);
+                throw ie;
+            }
+
+            addProxyFactory(proxyFactory);
+        }
+
+        loaded = true;
+    }
+
+}
diff --git a/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/JavascriptProxyFactory.java b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/JavascriptProxyFactory.java
new file mode 100644
index 0000000000..10455ef764
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/JavascriptProxyFactory.java
@@ -0,0 +1,69 @@
+/*
+ * 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.web.javascript;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.assembly.ComponentReference;
+
+/**
+ * Javascript Proxy Factory used to allow Web related bindings to generate 
+ * client js proxyies
+ * 
+ * @version $Rev$ $Date$
+ */
+public interface JavascriptProxyFactory {
+
+    /**
+     * The binding model type associated with this factory
+     * @return the binding model type
+     */
+    Class<?> getModelType(); 
+    
+    /**
+     * The binding qname associated with this factory
+     * @return the binding qname
+     */
+    QName getQName();
+    
+    /**
+     * Get the Javascript proxy client file name
+     * @return the javascript file name
+     */
+    String getJavascriptProxyFile();
+    
+    /**
+     * Get the Javascript proxy client contents as a stream
+     * @return
+     */
+    InputStream getJavascriptProxyFileAsStream() throws IOException;
+
+    
+    /**
+     * Create a JavaScript Proxy for a given reference
+     * @param componentReference The reference
+     * @return the javascript proxy code
+     * @throws IOException
+     */
+    String createJavascriptReference(ComponentReference componentReference) throws IOException;
+}
diff --git a/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/JavascriptProxyFactoryExtensionPoint.java b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/JavascriptProxyFactoryExtensionPoint.java
new file mode 100644
index 0000000000..bf0e6e0526
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/java/org/apache/tuscany/sca/web/javascript/JavascriptProxyFactoryExtensionPoint.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.web.javascript;
+
+import javax.xml.namespace.QName;
+
+public interface JavascriptProxyFactoryExtensionPoint {
+    /**
+     * Add Javascript proxy factory
+     * 
+     * @param javascriptProxyfactory The Javascript proxy factory
+     */
+    void addProxyFactory(JavascriptProxyFactory javascriptProxyfactory);
+
+    /**
+     * Remove Javascript proxy factory
+     * 
+     * @param javascriptProxyfactory The Javascript proxy fatory
+     */
+    void removeProxyFactory(JavascriptProxyFactory javascriptProxyfactory);
+
+    /**
+     * Returns the Javascript proxy factory associated with the given QName
+     * @param bindingName
+     * @return
+     */
+    JavascriptProxyFactory  getProxyFactory(QName bindingName);
+    
+    /**
+     * Returns the Javascript proxy factory associated with the given Type
+     * @param bindingType
+     * @return
+     */
+    JavascriptProxyFactory  getProxyFactory(Class<?> bindingType);
+}
diff --git a/java/sca/modules/web-javascript/src/main/resources/META-INF/services/org.apache.tuscany.sca.web.javascript.ComponentJavaScriptGeneratorExtensionPoint b/java/sca/modules/web-javascript/src/main/resources/META-INF/services/org.apache.tuscany.sca.web.javascript.ComponentJavaScriptGeneratorExtensionPoint
new file mode 100644
index 0000000000..6a28e3481d
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/resources/META-INF/services/org.apache.tuscany.sca.web.javascript.ComponentJavaScriptGeneratorExtensionPoint
@@ -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.web.javascript.DefaultComponentJavaScriptGeneratorExtensionPoint
diff --git a/java/sca/modules/web-javascript/src/main/resources/META-INF/services/org.apache.tuscany.sca.web.javascript.JavascriptProxyFactoryExtensionPoint b/java/sca/modules/web-javascript/src/main/resources/META-INF/services/org.apache.tuscany.sca.web.javascript.JavascriptProxyFactoryExtensionPoint
new file mode 100644
index 0000000000..95a7cecd2b
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/resources/META-INF/services/org.apache.tuscany.sca.web.javascript.JavascriptProxyFactoryExtensionPoint
@@ -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.web.javascript.DefaultJavascriptProxyFactoryExtensionPoint
diff --git a/java/sca/modules/web-javascript/src/main/resources/web-javascript-validation-messages.properties b/java/sca/modules/web-javascript/src/main/resources/web-javascript-validation-messages.properties
new file mode 100644
index 0000000000..dbc7317653
--- /dev/null
+++ b/java/sca/modules/web-javascript/src/main/resources/web-javascript-validation-messages.properties
@@ -0,0 +1,21 @@
+#

+#

+#    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.

+#

+#

+IllegalArgumentException = Invalid qname: {0}