| /* |
| * 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.dm.impl; |
| |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.util.List; |
| |
| import org.apache.felix.dm.Component; |
| import org.apache.felix.dm.ComponentStateListener; |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.context.DependencyContext; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * Bundle Adapter Service implementation. This class extends the FilterService in order to catch |
| * some Service methods for configuring actual adapter service implementation. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class BundleAdapterImpl extends FilterComponent |
| { |
| /** |
| * Creates a new Bundle Adapter Service implementation. |
| */ |
| public BundleAdapterImpl(DependencyManager dm, int bundleStateMask, String bundleFilter, boolean propagate) |
| { |
| this(dm, bundleStateMask, bundleFilter, propagate, null, null, null, null); |
| } |
| |
| public BundleAdapterImpl(DependencyManager dm, int stateMask, String filter, boolean propagate, Object cbInstance, String add, String change, String remove) { |
| super(dm.createComponent()); // This service will be filtered by our super class, allowing us to take control. |
| m_component |
| .setImplementation(new BundleAdapterDecorator(stateMask, propagate, cbInstance, add, change, remove)) |
| .add(dm.createBundleDependency() |
| .setFilter(filter) |
| .setStateMask(stateMask) |
| .setCallbacks("added", "removed")) |
| .setCallbacks("init", null, "stop", null); |
| } |
| |
| public class BundleAdapterDecorator extends AbstractDecorator { |
| private final boolean m_propagate; |
| private final int m_bundleStateMask; |
| public final Object m_cbInstance; |
| public final String m_add; |
| public final String m_change; |
| public final String m_remove; |
| |
| public BundleAdapterDecorator(int bundleStateMask, boolean propagate) { |
| this(bundleStateMask, propagate, null, null, null, null); |
| } |
| |
| public BundleAdapterDecorator(int bundleStateMask, boolean propagate, Object callbackInstance, String add, String change, String remove) { |
| m_bundleStateMask = bundleStateMask; |
| m_propagate = propagate; |
| m_cbInstance = callbackInstance; |
| m_add = add; |
| m_change = change; |
| m_remove = remove; |
| } |
| |
| public Component createService(Object[] properties) { |
| Bundle bundle = (Bundle) properties[0]; |
| Hashtable<String, Object> props = new Hashtable<>(); |
| if (m_serviceProperties != null) { |
| Enumeration<String> e = m_serviceProperties.keys(); |
| while (e.hasMoreElements()) { |
| String key = e.nextElement(); |
| props.put(key, m_serviceProperties.get(key)); |
| } |
| } |
| List<DependencyContext> dependencies = m_component.getDependencies(); |
| // the first dependency is always the dependency on the bundle, which |
| // will be replaced with a more specific dependency below |
| dependencies.remove(0); |
| Component service = m_manager.createComponent() |
| .setInterface(m_serviceInterfaces, props) |
| .setImplementation(m_serviceImpl) |
| .setFactory(m_factory, m_factoryCreateMethod) // if not set, no effect |
| .setComposition(m_compositionInstance, m_compositionMethod) // if not set, no effect |
| .setCallbacks(m_callbackObject, m_init, m_start, m_stop, m_destroy) // if not set, no effect |
| .add(m_manager.createBundleDependency() |
| .setBundle(bundle) |
| .setStateMask(m_bundleStateMask) |
| .setPropagate(m_propagate) |
| .setCallbacks(m_cbInstance, m_add, m_change, m_remove) // if no callbacks, autoconfig is enabled |
| .setRequired(true)); |
| |
| copyDependencies(dependencies, service); |
| |
| for (ComponentStateListener stateListener : m_stateListeners) { |
| service.add(stateListener); |
| } |
| configureAutoConfigState(service, m_component); |
| return service; |
| } |
| } |
| } |