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diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java b/sca-java-2.x/tags/2.0.1-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java
new file mode 100644
index 0000000000..f7fe4df87c
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java
@@ -0,0 +1,194 @@
+/*
+ * 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.core;
+
+import static org.apache.tuscany.sca.extensibility.ServiceHelper.newInstance;
+
+import java.lang.reflect.Modifier;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.IdentityHashMap;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
+import org.apache.tuscany.sca.extensibility.ServiceHelper;
+
+/**
+ * Default implementation of a registry to hold all the Tuscany core extension
+ * points. As the point of contact for all extension artifacts this registry
+ * allows loaded extensions to find all other parts of the system and register
+ * themselves appropriately.
+ * 
+ * @tuscany.spi.extension.asclient
+ *
+ * @version $Rev$ $Date$
+ */
+public class DefaultExtensionPointRegistry implements ExtensionPointRegistry {
+    protected Map<Class<?>, Object> extensionPoints = new HashMap<Class<?>, Object>();
+    private ServiceDiscovery discovery;
+    /**
+     * Constructs a new registry.
+     */
+    public DefaultExtensionPointRegistry() {
+        this.discovery = ServiceDiscovery.getInstance();
+    }
+    
+    public DefaultExtensionPointRegistry(ServiceDiscovery discovery) {
+        this.discovery = discovery;
+    }
+
+    /**
+     * Add an extension point to the registry. This default implementation
+     * stores extensions against the interfaces that they implement.
+     *
+     * @param extensionPoint The instance of the extension point
+     *
+     * @throws IllegalArgumentException if extensionPoint is null
+     */
+    public synchronized void addExtensionPoint(Object extensionPoint) {
+        addExtensionPoint(extensionPoint, null);
+    }
+
+    public synchronized void addExtensionPoint(Object extensionPoint, ServiceDeclaration declaration) {
+        if (extensionPoint == null) {
+            throw new IllegalArgumentException("Cannot register null as an ExtensionPoint");
+        }
+        ServiceHelper.start(extensionPoint);
+        
+        Set<Class<?>> interfaces = getAllInterfaces(extensionPoint.getClass());
+        for (Class<?> i : interfaces) {
+            registerExtensionPoint(i, extensionPoint, declaration);
+        }
+    }
+
+    protected void registerExtensionPoint(Class<?> i, Object extensionPoint, ServiceDeclaration declaration) {
+        extensionPoints.put(i, extensionPoint);
+    }
+
+    /**
+     * Get the extension point by the interface that it implements
+     *
+     * @param extensionPointType The lookup key (extension point interface)
+     * @return The instance of the extension point
+     *
+     * @throws IllegalArgumentException if extensionPointType is null
+     */
+    public synchronized <T> T getExtensionPoint(Class<T> extensionPointType) {
+        if (extensionPointType == null) {
+            throw new IllegalArgumentException("Cannot lookup ExtensionPoint of type null");
+        }
+
+        Object extensionPoint = findExtensionPoint(extensionPointType);
+        if (extensionPoint == null) {
+
+            // Dynamically load an extension point class declared under META-INF/services
+            try {
+                ServiceDeclaration extensionPointDeclaration =
+                    getServiceDiscovery().getServiceDeclaration(extensionPointType);
+                if (extensionPointDeclaration != null) {
+                    extensionPoint = newInstance(this, extensionPointDeclaration);
+                    // Cache the loaded extension point
+                    addExtensionPoint(extensionPoint, extensionPointDeclaration);
+                }
+            } catch (Throwable e) {
+                throw new IllegalArgumentException(e);
+            }
+        }
+        return extensionPointType.cast(extensionPoint);
+    }
+
+    protected <T> Object findExtensionPoint(Class<T> extensionPointType) {
+        return extensionPoints.get(extensionPointType);
+    }
+
+    /**
+     * Remove an extension point based on the interface that it implements
+     *
+     * @param extensionPoint The extension point to remove
+     *
+     * @throws IllegalArgumentException if extensionPoint is null
+     */
+    public synchronized void removeExtensionPoint(Object extensionPoint) {
+        if (extensionPoint == null) {
+            throw new IllegalArgumentException("Cannot remove null as an ExtensionPoint");
+        }
+
+        ServiceHelper.stop(extensionPoint);
+
+        Set<Class<?>> interfaces = getAllInterfaces(extensionPoint.getClass());
+        for (Class<?> i : interfaces) {
+            unregisterExtensionPoint(i);
+        }
+    }
+
+    protected void unregisterExtensionPoint(Class<?> i) {
+        extensionPoints.remove(i);
+    }
+
+    /**
+     * Returns the set of interfaces implemented by the given class and its
+     * ancestors or a blank set if none
+     */
+    private static Set<Class<?>> getAllInterfaces(Class<?> clazz) {
+        Set<Class<?>> implemented = new HashSet<Class<?>>();
+        getAllInterfaces(clazz, implemented);
+        implemented.remove(LifeCycleListener.class);
+        return implemented;
+    }
+
+    private static void getAllInterfaces(Class<?> clazz, Set<Class<?>> implemented) {
+        Class<?>[] interfaces = clazz.getInterfaces();
+        for (Class<?> interfaze : interfaces) {
+            if (Modifier.isPublic(interfaze.getModifiers())) {
+                implemented.add(interfaze);
+            }
+        }
+        Class<?> superClass = clazz.getSuperclass();
+        // Object has no superclass so check for null
+        if (superClass != null && !superClass.equals(Object.class)) {
+            getAllInterfaces(superClass, implemented);
+        }
+    }
+
+    public synchronized void start() {
+        ExtensionPointRegistryLocator.addExtensionPointRegistry(this);
+    }
+
+    public synchronized void stop() {
+        // Get a unique map as an extension point may exist in the map by different keys
+        Map<LifeCycleListener, LifeCycleListener> map = new IdentityHashMap<LifeCycleListener, LifeCycleListener>();
+        for (Object extp : extensionPoints.values()) {
+            if (extp instanceof LifeCycleListener) {
+                LifeCycleListener listener = (LifeCycleListener)extp;
+                map.put(listener, listener);
+            }
+        }
+        ServiceHelper.stop(map.values());
+        extensionPoints.clear();
+        ExtensionPointRegistryLocator.removeExtensionPointRegistry(this);
+    }
+
+    public ServiceDiscovery getServiceDiscovery() {
+        return discovery;
+    }
+
+}