| /* |
| * 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.dependencymanager; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.osgi.framework.BundleContext; |
| |
| /** |
| * The dependency manager. Manages all services and their dependencies. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class DependencyManager { |
| private final BundleContext m_context; |
| private final Logger m_logger; |
| private List m_services = Collections.synchronizedList(new ArrayList()); |
| |
| /** |
| * Creates a new dependency manager. |
| * |
| * @param context the bundle context |
| * @param logger |
| */ |
| public DependencyManager(BundleContext context, Logger logger) { |
| m_context = context; |
| m_logger = logger; |
| } |
| |
| /** |
| * Adds a new service to the dependency manager. After the service was added |
| * it will be started immediately. |
| * |
| * @param service the service to add |
| */ |
| public void add(Service service) { |
| m_services.add(service); |
| service.start(); |
| } |
| |
| /** |
| * Removes a service from the dependency manager. Before the service is removed |
| * it is stopped first. |
| * |
| * @param service the service to remove |
| */ |
| public void remove(Service service) { |
| service.stop(); |
| m_services.remove(service); |
| } |
| |
| /** |
| * Creates a new service. |
| * |
| * @return the new service |
| */ |
| public Service createService() { |
| return new ServiceImpl(m_context, this, m_logger); |
| } |
| |
| /** |
| * Creates a new service dependency. |
| * |
| * @return the service dependency |
| */ |
| public ServiceDependency createServiceDependency() { |
| return new ServiceDependency(m_context, m_logger); |
| } |
| |
| public ConfigurationDependency createConfigurationDependency() { |
| return new ConfigurationDependency(m_context, m_logger); |
| } |
| |
| /** |
| * Returns a list of services. |
| * |
| * @return a list of services |
| */ |
| public List getServices() { |
| return Collections.unmodifiableList(m_services); |
| } |
| |
| } |