| /* |
| * 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.net.URL; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.util.List; |
| |
| import org.apache.felix.dm.BundleComponent; |
| import org.apache.felix.dm.Component; |
| import org.apache.felix.dm.ComponentStateListener; |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.ResourceComponent; |
| import org.apache.felix.dm.ResourceDependency; |
| import org.apache.felix.dm.context.DependencyContext; |
| |
| /** |
| * Resource adapter service implementation. This class extends the FilterService in order to catch |
| * some Service methods for configuring actual resource adapter service implementation. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class ResourceAdapterImpl extends FilterComponent<ResourceComponent> implements ResourceComponent { |
| private volatile Object m_callbackInstance; |
| private volatile String m_callbackChanged; |
| private volatile String m_callbackAdded; |
| private volatile String m_resourceFilter; |
| private volatile boolean m_propagate = true; |
| private volatile Object m_propagateCallbackInstance; |
| private volatile String m_propagateCallbackMethod; |
| |
| public ResourceAdapterImpl(DependencyManager dm) { |
| super(dm.createComponent()); // This service will be filtered by our super class, allowing us to take control. |
| } |
| |
| public ResourceComponent setResourceFilter(String filter) { |
| m_resourceFilter = filter; |
| return this; |
| } |
| |
| public ResourceComponent setPropagate(boolean propagate) { |
| m_propagate = propagate; |
| return this; |
| } |
| |
| public ResourceComponent setPropagate(Object propagateCbInstance, String propagateCbMethod) { |
| m_propagateCallbackInstance = propagateCbInstance; |
| m_propagateCallbackMethod = propagateCbMethod; |
| return this; |
| } |
| |
| public ResourceComponent setBundleCallbacks(String add, String change) { |
| m_callbackAdded = add; |
| m_callbackChanged = change; |
| return this; |
| } |
| |
| public ResourceComponent setBundleCallbackInstance(Object callbackInstance) { |
| m_callbackInstance = callbackInstance; |
| return this; |
| } |
| |
| @Override |
| protected void startInitial() { |
| DependencyManager dm = getDependencyManager(); |
| m_component.setImplementation(new ResourceAdapterDecorator()) |
| .add(dm.createResourceDependency() |
| .setFilter(m_resourceFilter) |
| .setAutoConfig(false) |
| .setCallbacks("added", "removed")) |
| .setCallbacks("init", null, "stop", null); |
| } |
| |
| public String getName() { |
| return "Resource Adapter" + ((m_resourceFilter != null) ? " with filter " + m_resourceFilter : ""); |
| } |
| |
| public class ResourceAdapterDecorator extends AbstractDecorator { |
| |
| public Component createService(Object[] properties) { |
| URL resource = (URL) 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 resource, which |
| // will be replaced with a more specific dependency below |
| dependencies.remove(0); |
| ResourceDependency resourceDependency = m_manager.createResourceDependency() |
| .setResource(resource) |
| .setCallbacks(m_callbackInstance, m_callbackAdded, m_callbackChanged, null) |
| .setAutoConfig(m_callbackAdded == null) |
| .setRequired(true); |
| if (m_propagateCallbackInstance != null && m_propagateCallbackMethod != null) { |
| resourceDependency.setPropagate(m_propagateCallbackInstance, m_propagateCallbackMethod); |
| } else { |
| resourceDependency.setPropagate(m_propagate); |
| } |
| 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 |
| .setScope(m_scope) |
| .add(resourceDependency); |
| |
| configureAutoConfigState(service, m_component); |
| |
| copyDependencies(dependencies, service); |
| |
| for (ComponentStateListener stateListener : m_stateListeners) { |
| service.add(stateListener); |
| } |
| return service; |
| } |
| } |
| } |