Pierre De Rop | 19476fe | 2010-05-23 08:13:58 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.apache.felix.dm.impl; |
| 20 | |
| 21 | import java.util.ArrayList; |
| 22 | import java.util.Dictionary; |
| 23 | import java.util.Iterator; |
| 24 | import java.util.List; |
| 25 | |
Marcel Offermans | 8b93efa | 2010-07-02 18:27:21 +0000 | [diff] [blame] | 26 | import org.apache.felix.dm.Dependency; |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame] | 27 | import org.apache.felix.dm.DependencyManager; |
Marcel Offermans | 8b93efa | 2010-07-02 18:27:21 +0000 | [diff] [blame] | 28 | import org.apache.felix.dm.Service; |
| 29 | import org.apache.felix.dm.ServiceStateListener; |
Pierre De Rop | 19476fe | 2010-05-23 08:13:58 +0000 | [diff] [blame] | 30 | import org.osgi.framework.ServiceRegistration; |
| 31 | |
| 32 | /** |
| 33 | * This class allows to filter a Service interface. All Aspect/Adapters extends this class |
| 34 | * in order to add functionality to the default Service implementation. |
| 35 | */ |
| 36 | public class FilterService implements Service |
| 37 | { |
| 38 | protected ServiceImpl m_service; |
| 39 | protected List m_stateListeners = new ArrayList(); |
| 40 | protected String m_init = "init"; |
| 41 | protected String m_start = "start"; |
| 42 | protected String m_stop = "stop"; |
| 43 | protected String m_destroy = "destroy"; |
| 44 | protected Object m_callbackObject; |
| 45 | protected Object m_compositionInstance; |
| 46 | protected String m_compositionMethod; |
| 47 | protected String[] m_serviceInterfaces; |
| 48 | protected Object m_serviceImpl; |
| 49 | protected Object m_factory; |
| 50 | protected String m_factoryCreateMethod; |
| 51 | protected Dictionary m_serviceProperties; |
| 52 | |
| 53 | public FilterService(Service service) |
| 54 | { |
| 55 | m_service = (ServiceImpl) service; |
| 56 | } |
| 57 | |
| 58 | public Service add(Dependency dependency) |
| 59 | { |
| 60 | m_service.add(dependency); |
| 61 | // Add the dependency (if optional) to all already instantiated services. |
| 62 | // If the dependency is required, our internal service will be stopped/restarted, so in this case |
| 63 | // we have nothing to do. |
| 64 | if (! dependency.isRequired()) { |
| 65 | AbstractDecorator ad = (AbstractDecorator) m_service.getService(); |
| 66 | if (ad != null) |
| 67 | { |
| 68 | ad.addDependency(dependency); |
| 69 | } |
| 70 | } |
| 71 | return this; |
| 72 | } |
| 73 | |
| 74 | public Service add(List dependencies) |
| 75 | { |
| 76 | m_service.add(dependencies); |
| 77 | // Add the dependencies to all already instantiated services. |
| 78 | // If one dependency from the list is required, we have nothing to do, since our internal |
| 79 | // service will be stopped/restarted. |
| 80 | Iterator it = dependencies.iterator(); |
| 81 | while (it.hasNext()) { |
| 82 | if (((Dependency) it.next()).isRequired()) { |
| 83 | return this; |
| 84 | } |
| 85 | } |
| 86 | // Ok, the list contains no required dependencies: add optionals dependencies in already instantiated |
| 87 | // services. |
| 88 | AbstractDecorator ad = (AbstractDecorator) m_service.getService(); |
| 89 | if (ad != null) |
| 90 | { |
| 91 | ad.addDependencies(dependencies); |
| 92 | } |
| 93 | return this; |
| 94 | } |
| 95 | |
| 96 | public void addStateListener(ServiceStateListener listener) |
| 97 | { |
| 98 | synchronized (this) |
| 99 | { |
| 100 | m_stateListeners.add(listener); |
| 101 | } |
| 102 | // Add the listener to all already instantiated services. |
| 103 | AbstractDecorator ad = (AbstractDecorator) m_service.getService(); |
| 104 | if (ad != null) |
| 105 | { |
| 106 | ad.addStateListener(listener); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | public List getDependencies() |
| 111 | { |
| 112 | return m_service.getDependencies(); |
| 113 | } |
| 114 | |
| 115 | public Object getService() |
| 116 | { |
| 117 | return m_service.getService(); |
| 118 | } |
| 119 | |
| 120 | public synchronized Dictionary getServiceProperties() |
| 121 | { |
| 122 | return m_serviceProperties; |
| 123 | } |
| 124 | |
| 125 | public ServiceRegistration getServiceRegistration() |
| 126 | { |
| 127 | return m_service.getServiceRegistration(); |
| 128 | } |
| 129 | |
| 130 | public Service remove(Dependency dependency) |
| 131 | { |
| 132 | m_service.remove(dependency); |
| 133 | // Remove the dependency (if optional) from all already instantiated services. |
| 134 | // If the dependency is required, our internal service will be stopped, so in this case |
| 135 | // we have nothing to do. |
| 136 | if (!dependency.isRequired()) |
| 137 | { |
| 138 | AbstractDecorator ad = (AbstractDecorator) m_service.getService(); |
| 139 | if (ad != null) |
| 140 | { |
| 141 | ad.removeDependency(dependency); |
| 142 | } |
| 143 | } |
| 144 | return this; |
| 145 | } |
| 146 | |
| 147 | public void removeStateListener(ServiceStateListener listener) |
| 148 | { |
| 149 | synchronized (this) |
| 150 | { |
| 151 | m_stateListeners.remove(listener); |
| 152 | } |
| 153 | // Remove the listener from all already instantiated services. |
| 154 | AbstractDecorator ad = (AbstractDecorator) m_service.getService(); |
| 155 | if (ad != null) |
| 156 | { |
| 157 | ad.removeStateListener(listener); |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | public synchronized Service setCallbacks(Object instance, String init, String start, String stop, |
| 162 | String destroy) |
| 163 | { |
| 164 | m_service.ensureNotActive(); |
| 165 | m_callbackObject = instance; |
| 166 | m_init = init; |
| 167 | m_start = start; |
| 168 | m_stop = stop; |
| 169 | m_destroy = destroy; |
| 170 | return this; |
| 171 | } |
| 172 | |
| 173 | public Service setCallbacks(String init, String start, String stop, String destroy) |
| 174 | { |
| 175 | setCallbacks(null, init, start, stop, destroy); |
| 176 | return this; |
| 177 | } |
| 178 | |
| 179 | public synchronized Service setComposition(Object instance, String getMethod) |
| 180 | { |
| 181 | m_service.ensureNotActive(); |
| 182 | m_compositionInstance = instance; |
| 183 | m_compositionMethod = getMethod; |
| 184 | return this; |
| 185 | } |
| 186 | |
| 187 | public synchronized Service setComposition(String getMethod) |
| 188 | { |
| 189 | m_service.ensureNotActive(); |
| 190 | m_compositionMethod = getMethod; |
| 191 | return this; |
| 192 | } |
| 193 | |
| 194 | public synchronized Service setFactory(Object factory, String createMethod) |
| 195 | { |
| 196 | m_service.ensureNotActive(); |
| 197 | m_factory = factory; |
| 198 | m_factoryCreateMethod = createMethod; |
| 199 | return this; |
| 200 | } |
| 201 | |
| 202 | public Service setFactory(String createMethod) |
| 203 | { |
| 204 | return setFactory(null, createMethod); |
| 205 | } |
| 206 | |
| 207 | public synchronized Service setImplementation(Object implementation) |
| 208 | { |
| 209 | m_service.ensureNotActive(); |
| 210 | m_serviceImpl = implementation; |
| 211 | return this; |
| 212 | } |
| 213 | |
| 214 | public Service setInterface(String serviceName, Dictionary properties) |
| 215 | { |
| 216 | return setInterface(new String[] { serviceName }, properties); |
| 217 | } |
| 218 | |
| 219 | public synchronized Service setInterface(String[] serviceInterfaces, Dictionary properties) { |
| 220 | m_service.ensureNotActive(); |
| 221 | if (serviceInterfaces != null) { |
| 222 | m_serviceInterfaces = new String[serviceInterfaces.length]; |
| 223 | System.arraycopy(serviceInterfaces, 0, m_serviceInterfaces, 0, serviceInterfaces.length); |
| 224 | m_serviceProperties = properties; |
| 225 | } |
| 226 | return this; |
| 227 | } |
| 228 | |
| 229 | public Service setServiceProperties(Dictionary serviceProperties) |
| 230 | { |
| 231 | synchronized (this) |
| 232 | { |
| 233 | m_serviceProperties = serviceProperties; |
| 234 | } |
| 235 | // Set the properties to all already instantiated services. |
| 236 | if (serviceProperties != null) { |
| 237 | AbstractDecorator ad = (AbstractDecorator) m_service.getService(); |
| 238 | if (ad != null) |
| 239 | { |
| 240 | ad.setServiceProperties(serviceProperties); |
| 241 | } |
| 242 | } |
| 243 | return this; |
| 244 | } |
| 245 | |
| 246 | public void start() |
| 247 | { |
| 248 | m_service.start(); |
| 249 | } |
| 250 | |
| 251 | public void stop() |
| 252 | { |
| 253 | m_service.stop(); |
| 254 | } |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame] | 255 | |
| 256 | public Object[] getCompositionInstances() { |
| 257 | return m_service.getCompositionInstances(); |
| 258 | } |
| 259 | |
| 260 | public DependencyManager getDependencyManager() { |
| 261 | return m_service.getDependencyManager(); |
| 262 | } |
Marcel Offermans | 3d92121 | 2010-08-09 13:37:02 +0000 | [diff] [blame^] | 263 | |
| 264 | public Service setAutoConfig(Class clazz, boolean autoConfig) { |
| 265 | m_service.setAutoConfig(clazz, autoConfig); |
| 266 | return this; |
| 267 | } |
| 268 | |
| 269 | public Service setAutoConfig(Class clazz, String instanceName) { |
| 270 | m_service.setAutoConfig(clazz, instanceName); |
| 271 | return this; |
| 272 | } |
| 273 | |
| 274 | public boolean getAutoConfig(Class clazz) { |
| 275 | return m_service.getAutoConfig(clazz); |
| 276 | } |
| 277 | |
| 278 | public String getAutoConfigInstance(Class clazz) { |
| 279 | return m_service.getAutoConfigInstance(clazz); |
| 280 | }; |
Pierre De Rop | 19476fe | 2010-05-23 08:13:58 +0000 | [diff] [blame] | 281 | } |