| /* |
| * 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.felix.ipojo.extender.internal.processor; |
| |
| import org.apache.felix.ipojo.extender.internal.BundleProcessor; |
| import org.osgi.framework.Bundle; |
| |
| import java.util.LinkedList; |
| |
| /** |
| * A bundle processor delegating a wrapped bundle processor. On stop, the bundles are processed in reverse. |
| */ |
| public class ReverseBundleProcessor extends ForwardingBundleProcessor { |
| |
| /** |
| * The wrapped bundle processor. |
| */ |
| private final BundleProcessor m_delegate; |
| |
| /** |
| * A list of bundle to process. |
| */ |
| private LinkedList<Bundle> m_bundles = new LinkedList<Bundle>(); |
| |
| /** |
| * Creates the processor. |
| * |
| * @param delegate the processor on which call are delegated |
| */ |
| public ReverseBundleProcessor(BundleProcessor delegate) { |
| m_delegate = delegate; |
| } |
| |
| /** |
| * @return the wrapped processor. |
| */ |
| @Override |
| protected BundleProcessor delegate() { |
| return m_delegate; |
| } |
| |
| /** |
| * A bundle is starting. |
| * The bundle is added to the list, and the processing delegated to the wrapped processor. |
| * |
| * @param bundle the bundle |
| */ |
| @Override |
| public void activate(Bundle bundle) { |
| m_bundles.addLast(bundle); |
| super.activate(bundle); |
| } |
| |
| /** |
| * A bundle is stopping. |
| * The bundle is removed from the list and the processing delegated to the wrapped processor. |
| * |
| * @param bundle the bundle |
| */ |
| @Override |
| public void deactivate(Bundle bundle) { |
| m_bundles.remove(bundle); |
| super.deactivate(bundle); |
| } |
| |
| /** |
| * iPOJO is stopping. |
| * The bundle that are still in the list are processed in the <strong>reverse</strong> order by the wrapped |
| * processor. |
| */ |
| @Override |
| public void stop() { |
| // deactivate in reverse order |
| while (!m_bundles.isEmpty()) { |
| super.deactivate(m_bundles.removeLast()); |
| } |
| super.stop(); |
| } |
| } |