| /* |
| * 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.dependency.interceptors; |
| |
| import org.apache.felix.ipojo.util.DependencyModel; |
| import org.osgi.framework.BundleContext; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Default implementation of the default service tracking interceptor. |
| * It accepts all references and keeps the dependencies in the `dependencies` list. This list is guarded by the |
| * monitor lock. |
| * |
| * It also provides an `invalidateMatchingServices` method notifying all managed dependencies of a change in the |
| * matching service set. |
| */ |
| public class DefaultServiceTrackingInterceptor extends DefaultDependencyInterceptor implements ServiceTrackingInterceptor { |
| |
| /** |
| * Default implementation of the accept method. |
| * The default behavior is to accept all services as they are (no transformation). |
| * @param dependency the dependency the dependency |
| * @param context the context of the dependency the bundle context used by the dependency |
| * @param ref the reference the reference to accept, transform or reject |
| * @param <S> the type of service |
| * @return the reference as it is. |
| */ |
| public <S> TransformedServiceReference<S> accept(DependencyModel dependency, BundleContext context, TransformedServiceReference<S> ref) { |
| return ref; |
| } |
| |
| /** |
| * Notifies the managed dependencies of a change in the set of services accepted by this interceptor. |
| * The dependency will call the accept method to recompute the set of matching services. |
| */ |
| public void invalidateMatchingServices() { |
| List<DependencyModel> list = new ArrayList<DependencyModel>(); |
| synchronized (this) { |
| list.addAll(dependencies); |
| } |
| |
| for (DependencyModel dep : list) { |
| dep.invalidateMatchingServices(); |
| } |
| } |
| } |