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diff --git a/branches/sca-java-1.0/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXArtifactProcessorExtensionPoint.java b/branches/sca-java-1.0/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXArtifactProcessorExtensionPoint.java
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+/*
+ * 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.processor;
+
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.util.List;
+import java.util.Map;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+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.contribution.util.ServiceConfigurationUtil;
+import org.apache.tuscany.sca.policy.PolicyFactory;
+
+/**
+ * The default implementation of an extension point for StAX artifact processors.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class DefaultStAXArtifactProcessorExtensionPoint
+    extends DefaultArtifactProcessorExtensionPoint<StAXArtifactProcessor>
+    implements StAXArtifactProcessorExtensionPoint {
+
+    private ModelFactoryExtensionPoint modelFactories;
+    private boolean loaded;
+
+    /**
+     * Constructs a new extension point.
+     */
+    public DefaultStAXArtifactProcessorExtensionPoint(ModelFactoryExtensionPoint modelFactories) {
+        this.modelFactories = modelFactories;
+    }
+
+    public void addArtifactProcessor(StAXArtifactProcessor artifactProcessor) {
+        processorsByArtifactType.put((Object)artifactProcessor.getArtifactType(), artifactProcessor);
+        processorsByModelType.put(artifactProcessor.getModelType(), artifactProcessor);
+    }
+    
+    public void removeArtifactProcessor(StAXArtifactProcessor artifactProcessor) {
+        processorsByArtifactType.remove((Object)artifactProcessor.getArtifactType());
+        processorsByModelType.remove(artifactProcessor.getModelType());        
+    }
+    
+    @Override
+    public StAXArtifactProcessor getProcessor(Class<?> modelType) {
+        loadArtifactProcessors();
+        return super.getProcessor(modelType);
+    }
+    
+    @Override
+    public StAXArtifactProcessor getProcessor(Object artifactType) {
+        loadArtifactProcessors();
+        return super.getProcessor(artifactType);
+    }
+
+    private void loadArtifactProcessors() {
+        if (loaded)
+            return;
+
+        // Get the processor service declarations
+        ClassLoader classLoader = StAXArtifactProcessor.class.getClassLoader();
+        List<String> processorDeclarations; 
+        try {
+            processorDeclarations = ServiceConfigurationUtil.getServiceClassNames(classLoader, StAXArtifactProcessor.class.getName());
+        } catch (IOException e) {
+            throw new IllegalStateException(e);
+        }
+        
+        for (String processorDeclaration: processorDeclarations) {
+            Map<String, String> attributes = ServiceConfigurationUtil.parseServiceDeclaration(processorDeclaration);
+            String className = attributes.get("class");
+            
+            // Load a StAX artifact processor
+            
+            // Get the model qname
+            QName artifactType = null;
+            String qname = attributes.get("qname");
+            if (qname != null) {
+                int h = qname.indexOf('#');
+                artifactType = new QName(qname.substring(0, h), qname.substring(h+1));
+            }
+            
+            // Get the model class name
+            String modelTypeName = attributes.get("model");
+            
+            // Get the model factory class name 
+            String factoryName = attributes.get("factory");
+            
+            // Create a processor wrapper and register it
+            StAXArtifactProcessor processor = new LazyStAXArtifactProcessor(modelFactories, artifactType, modelTypeName, factoryName, className);
+            addArtifactProcessor(processor);
+        }
+        
+        loaded = true;
+    }
+
+    /**
+     * A wrapper around an Artifact processor class allowing lazy loading and
+     * initialization of artifact processors.
+     */
+    private static class LazyStAXArtifactProcessor implements StAXArtifactProcessor {
+
+        private ModelFactoryExtensionPoint modelFactories;
+        private QName artifactType;
+        private String modelTypeName;
+        private String factoryName;
+        private String className;
+        private StAXArtifactProcessor processor;
+        private Class modelType;
+        
+        LazyStAXArtifactProcessor(ModelFactoryExtensionPoint modelFactories, QName artifactType, String modelTypeName, String factoryName, String className) {
+            this.modelFactories = modelFactories;
+            this.artifactType = artifactType;
+            this.modelTypeName = modelTypeName;
+            this.factoryName = factoryName;
+            this.className = className;
+        }
+
+        public QName getArtifactType() {
+            return artifactType;
+        }
+        
+        @SuppressWarnings("unchecked")
+        private StAXArtifactProcessor getProcessor() {
+            if (processor == null) {
+
+                if (className.equals("org.apache.tuscany.sca.assembly.xml.DefaultBeanModelProcessor")) {
+                    
+                    // Specific initialization for the DefaultBeanModelProcessor
+                    AssemblyFactory assemblyFactory = modelFactories.getFactory(AssemblyFactory.class);
+                    PolicyFactory policyFactory = modelFactories.getFactory(PolicyFactory.class);
+                    try {
+                        ClassLoader classLoader = URLArtifactProcessor.class.getClassLoader();
+                        Class<StAXArtifactProcessor> processorClass = (Class<StAXArtifactProcessor>)Class.forName(className, true, classLoader);
+                        Object modelFactory;
+                        if (factoryName != null) {
+                            Class<?> factoryClass = (Class<?>)Class.forName(factoryName, true, classLoader);
+                            modelFactory = modelFactories.getFactory(factoryClass);
+                        } else {
+                            modelFactory = null;
+                        }
+                        Constructor<StAXArtifactProcessor> constructor = processorClass.getConstructor(AssemblyFactory.class, PolicyFactory.class, QName.class, Class.class, Object.class);
+                        processor = constructor.newInstance(assemblyFactory, policyFactory, artifactType, getModelType(), modelFactory);
+                    } catch (Exception e) {
+                        throw new IllegalStateException(e);
+                    }
+                } else {
+                    
+                    // Load and instanciate the processor class
+                    try {
+                        ClassLoader classLoader = URLArtifactProcessor.class.getClassLoader();
+                        Class<StAXArtifactProcessor> processorClass = (Class<StAXArtifactProcessor>)Class.forName(className, true, classLoader);
+                        Constructor<StAXArtifactProcessor> constructor = processorClass.getConstructor(ModelFactoryExtensionPoint.class);
+                        processor = constructor.newInstance(modelFactories);
+                    } catch (Exception e) {
+                        throw new IllegalStateException(e);
+                    }
+                }
+            }
+            return processor;
+        }
+
+        public Object read(XMLStreamReader inputSource) throws ContributionReadException, XMLStreamException {
+            return getProcessor().read(inputSource);
+        }
+
+        @SuppressWarnings("unchecked")
+        public void write(Object model, XMLStreamWriter outputSource) throws ContributionWriteException, XMLStreamException {
+            getProcessor().write(model, outputSource);
+        }
+
+        public Class getModelType() {
+            if (modelType == null) {
+                try {
+                    ClassLoader classLoader = URLArtifactProcessor.class.getClassLoader();
+                    modelType = Class.forName(modelTypeName, true, classLoader);
+                } catch (Exception e) {
+                    throw new IllegalStateException(e);
+                }
+            }
+            return modelType;
+        }
+
+        @SuppressWarnings("unchecked")
+        public void resolve(Object model, ModelResolver resolver) throws ContributionResolveException {
+            getProcessor().resolve(model, resolver);
+        }
+
+    }
+}