| /* |
| * 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.runtime; |
| |
| import java.util.List; |
| |
| import org.apache.felix.dm.Component; |
| import org.apache.felix.dm.Dependency; |
| import org.apache.felix.dm.DependencyManager; |
| import org.osgi.framework.Bundle; |
| import org.osgi.service.log.LogService; |
| |
| /** |
| * base class for all kind of DM component builders (for Component, Aspect, Adapters ...). |
| */ |
| public abstract class AbstractBuilder |
| { |
| /** |
| * Returns the service component type. |
| */ |
| abstract String getType(); |
| |
| /** |
| * Builds the service component. |
| * @param serviceMetaData the service component metadata parsed from the descriptor file. |
| * @param serviceDependencies the service component dependencies metadata parsed from the descriptor file. |
| */ |
| abstract void build(MetaData serviceMetaData, List<MetaData> serviceDependencies, Bundle b, |
| DependencyManager dm) |
| throws Exception; |
| |
| /** |
| * Set common Service parameters, if provided from our Component descriptor |
| */ |
| protected void setCommonServiceParams(Component service, MetaData serviceMetaData) |
| throws Exception |
| { |
| String init = serviceMetaData.getString(Params.init, null); |
| String start = serviceMetaData.getString(Params.start, null); |
| String stop = serviceMetaData.getString(Params.stop, null); |
| String destroy = serviceMetaData.getString(Params.destroy, null); |
| service.setCallbacks(init, start, stop, destroy); |
| String composition = serviceMetaData.getString(Params.composition, null); |
| if (composition != null) |
| { |
| service.setComposition(composition); |
| } |
| } |
| |
| /** |
| * Registers all unnamed dependencies into a given service. Named dependencies are |
| * handled differently, and are managed by the ServiceLifecycleHandler class. |
| * @throws Exception |
| */ |
| protected static void addUnamedDependencies(Bundle b, DependencyManager dm, Component s, |
| MetaData srvMeta, List<MetaData> depsMeta) |
| throws Exception |
| { |
| for (MetaData dependency : depsMeta) |
| { |
| String name = dependency.getString(Params.name, null); |
| if (name == null) { |
| DependencyBuilder depBuilder = new DependencyBuilder(dependency); |
| Log.instance().log(LogService.LOG_INFO, |
| "ServiceLifecycleHandler.init: adding dependency %s into service %s", |
| dependency, srvMeta); |
| Dependency d = depBuilder.build(b, dm, false); |
| s.add(d); |
| } |
| } |
| } |
| } |