1 files changed, 0 insertions, 186 deletions
diff --git a/tags/java/sca/2.0-M1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java b/tags/java/sca/2.0-M1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java
deleted file mode 100644
index 12979723b1..0000000000
--- a/tags/java/sca/2.0-M1/modules/extensibility/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java
+++ /dev/null
@@ -1,186 +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.core;
-
-import java.io.IOException;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Modifier;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Set;
-
-import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
-import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
-
-/**
- * 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.
- *
- * @version $Rev$ $Date$
- */
-public class DefaultExtensionPointRegistry implements ExtensionPointRegistry {
-    private Map<Class<?>, Object> extensionPoints = new HashMap<Class<?>, Object>();
-    
-    /**
-     * Constructs a new registry. 
-     */
-    public DefaultExtensionPointRegistry() {
-    }
-
-    /**
-     * 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 void addExtensionPoint(Object extensionPoint) {
-        if (extensionPoint == null) {
-            throw new IllegalArgumentException("Cannot register null as an ExtensionPoint");
-        }
-
-        Set<Class<?>> interfaces = getAllInterfaces(extensionPoint.getClass());
-        for (Class<?> i : interfaces) {
-            extensionPoints.put(i, extensionPoint);
-        }
-    }
-    
-    private Constructor<?> getConstructor(Constructor<?>[] constructors, Class<?>[] paramTypes) {
-        for (Constructor<?> c : constructors) {
-            Class<?>[] types = c.getParameterTypes();
-            if (c.getParameterTypes().length == paramTypes.length) {
-                boolean found = true;
-                for (int i = 0; i < types.length; i++) {
-                    if (types[i] != paramTypes[i]) {
-                        found = false;
-                        break;
-                    }
-                }
-                if (found) {
-                    return c;
-                }
-            }
-        }
-        return null;
-    }
-
-    /**
-     * 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 <T> T getExtensionPoint(Class<T> extensionPointType) {
-        if (extensionPointType == null) {
-            throw new IllegalArgumentException("Cannot lookup ExtensionPoint of type null");
-        }
-
-        Object extensionPoint = extensionPoints.get(extensionPointType);
-        if (extensionPoint == null) {
-            
-            // Dynamically load an extension point class declared under META-INF/services           
-            try {
-                ServiceDeclaration extensionPointDeclaration = ServiceDiscovery.getInstance().getFirstServiceDeclaration(extensionPointType.getName());
-                if (extensionPointDeclaration != null) {
-                    Class<?> extensionPointClass = extensionPointDeclaration.loadClass();
-                    
-                    // Construct the extension point
-                    Constructor<?>[] constructors = extensionPointClass.getConstructors();
-                    Constructor<?> constructor = getConstructor(constructors, new Class<?>[] {ExtensionPointRegistry.class});
-                    if (constructor != null) {
-                        extensionPoint = constructor.newInstance(this);
-                    } else {
-                        constructor = getConstructor(constructors, new Class<?>[] {});
-                        if (constructor != null) {
-                            extensionPoint = constructor.newInstance();
-                        } else {
-                            throw new IllegalArgumentException(
-                                                               "No valid constructor is found for " + extensionPointClass);
-                        }
-                    }
-                   
-                    // Cache the loaded extension point
-                    addExtensionPoint(extensionPoint);
-                }
-            } catch (InvocationTargetException e) {
-                throw new IllegalArgumentException(e);
-            } catch (IOException e) {
-                throw new IllegalArgumentException(e);
-            } catch (ClassNotFoundException e) {
-                throw new IllegalArgumentException(e);
-            } catch (InstantiationException e) {
-                throw new IllegalArgumentException(e);
-            } catch (IllegalAccessException e) {
-                throw new IllegalArgumentException(e);
-            }
-        }
-        return extensionPointType.cast(extensionPoint);
-    }
-
-    /**
-     * 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 void removeExtensionPoint(Object extensionPoint) {
-        if (extensionPoint == null) {
-            throw new IllegalArgumentException("Cannot remove null as an ExtensionPoint");
-        }
-
-        Set<Class<?>> interfaces = getAllInterfaces(extensionPoint.getClass());
-        for (Class<?> i : interfaces) {
-            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);
-        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);
-        }
-    }
-
-}