1 files changed, 128 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/core-spi/src/main/java/org/apache/tuscany/sca/runtime/DefaultWireProcessorExtensionPoint.java b/sca-java-2.x/tags/2.0.1-RC1/modules/core-spi/src/main/java/org/apache/tuscany/sca/runtime/DefaultWireProcessorExtensionPoint.java
new file mode 100644
index 0000000000..054ebeda13
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/core-spi/src/main/java/org/apache/tuscany/sca/runtime/DefaultWireProcessorExtensionPoint.java
@@ -0,0 +1,128 @@
+/*
+ * 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.runtime;
+
+import java.lang.reflect.Constructor;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.LifeCycleListener;
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.extensibility.ServiceDiscovery;
+
+/**
+ * The default implementation of a <code>WireProcessorExtensionPoint</code>
+ *
+ * @version $Rev$ $Date$
+ */
+public class DefaultWireProcessorExtensionPoint implements RuntimeWireProcessorExtensionPoint, LifeCycleListener {
+    private ExtensionPointRegistry registry;
+    private boolean loaded;
+
+    /**
+     * @param registry
+     */
+    public DefaultWireProcessorExtensionPoint(ExtensionPointRegistry registry) {
+        super();
+        this.registry = registry;
+    }
+
+    /**
+     * The list of WireProcessors available to the runtime
+     */
+    private final List<RuntimeWireProcessor> processors = new ArrayList<RuntimeWireProcessor>();
+
+    /**
+    * Registers a wire-processor in the runtime
+    * 
+    * @param processor The processor to register
+    */
+    public void addWireProcessor(RuntimeWireProcessor processor) {
+        processors.add(processor);
+        if (processor instanceof LifeCycleListener) {
+            ((LifeCycleListener)processor).start();
+        }
+    }
+
+    /**
+     * De-registers a wire-processor in the runtime
+     * 
+     * @param processor The processor to de-register
+     */
+    public void removeWireProcessor(RuntimeWireProcessor processor) {
+        boolean found = processors.remove(processor);
+        if (found && (processor instanceof LifeCycleListener)) {
+            ((LifeCycleListener)processor).stop();
+        }
+    }
+
+    /**
+     * Returns a list of registered wire-processors.
+     * 
+     * @return The list of wire processors
+     */
+    public List<RuntimeWireProcessor> getWireProcessors() {
+        loadWireProcessors();
+        return processors;
+    }
+
+    private synchronized void loadWireProcessors() {
+        if (loaded) {
+            return;
+        }
+        try {
+            Collection<ServiceDeclaration> sds =
+                registry.getServiceDiscovery().getServiceDeclarations(RuntimeWireProcessor.class, true);
+            sds = ServiceDiscovery.removeDuplicateDeclarations(sds);
+            for (ServiceDeclaration sd : sds) {
+                Class type = sd.loadClass();
+                Constructor constructor = null;
+                RuntimeWireProcessor processor = null;
+                try {
+                    constructor = type.getConstructor(ExtensionPointRegistry.class);
+                    processor = (RuntimeWireProcessor)constructor.newInstance(registry);
+
+                } catch (NoSuchMethodException e) {
+                    constructor = type.getConstructor();
+                    processor = (RuntimeWireProcessor)constructor.newInstance();
+                }
+                if (processor != null) {
+                    addWireProcessor(processor);
+                }
+            }
+            loaded = true;
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
+        }
+    }
+
+    public void start() {
+    }
+
+    public void stop() {
+        for (RuntimeWireProcessor processor : processors) {
+            if ((processor instanceof LifeCycleListener)) {
+                ((LifeCycleListener)processor).stop();
+            }
+        }
+        processors.clear();
+    }
+}