From f860c2f35b2f94e379d2ff7d5c13f54cd4a3132a Mon Sep 17 00:00:00 2001
From: lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>
Date: Wed, 11 Nov 2009 23:06:42 +0000
Subject: Moving 1.x branches

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@835119 13f79535-47bb-0310-9956-ffa450edef68
---
 .../sca/core/DefaultExtensionPointRegistry.java    | 69 ++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java

(limited to 'sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java')

diff --git a/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java
new file mode 100644
index 0000000000..7a42300098
--- /dev/null
+++ b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.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.core;
+
+import java.util.HashMap;
+import java.util.Map;
+
+
+/**
+ * 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>();
+
+    /**
+     * 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
+     */    
+    public void addExtensionPoint(Object extensionPoint) {
+        Class[] interfaces = extensionPoint.getClass().getInterfaces();
+        for (int i = 0; i < interfaces.length; i++) {
+            extensionPoints.put(interfaces[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
+     */
+    public <T> T getExtensionPoint(Class<T> extensionPointType) {
+        return extensionPointType.cast(extensionPoints.get(extensionPointType));
+    }
+
+    /**
+     * Remove an extension point based on the interface that it implements
+     * @param extensionPoint The extension point to remove
+     */
+    public void removeExtensionPoint(Object extensionPoint) {
+        Class[] interfaces = extensionPoint.getClass().getInterfaces();
+        for (int i = 0; i < interfaces.length; i++) {
+            extensionPoints.remove(interfaces[i]);
+        }
+    }
+
+}
-- 
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