Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +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 | */ |
Pierre De Rop | e4d80b9 | 2009-12-04 22:48:32 +0000 | [diff] [blame] | 19 | package org.apache.felix.dm.impl.dependencies; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 20 | |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 21 | import java.lang.reflect.Proxy; |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 22 | import java.util.ArrayList; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 23 | import java.util.Dictionary; |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 24 | import java.util.List; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 25 | |
Pierre De Rop | e4d80b9 | 2009-12-04 22:48:32 +0000 | [diff] [blame] | 26 | import org.apache.felix.dm.dependencies.BundleDependency; |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 27 | import org.apache.felix.dm.impl.DefaultNullObject; |
Pierre De Rop | e4d80b9 | 2009-12-04 22:48:32 +0000 | [diff] [blame] | 28 | import org.apache.felix.dm.impl.Logger; |
| 29 | import org.apache.felix.dm.impl.tracker.BundleTracker; |
| 30 | import org.apache.felix.dm.impl.tracker.BundleTrackerCustomizer; |
| 31 | import org.apache.felix.dm.management.ServiceComponentDependency; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 32 | import org.osgi.framework.Bundle; |
| 33 | import org.osgi.framework.BundleContext; |
| 34 | import org.osgi.framework.BundleEvent; |
| 35 | import org.osgi.framework.Filter; |
| 36 | import org.osgi.framework.InvalidSyntaxException; |
| 37 | |
Marcel Offermans | 61a8114 | 2010-04-02 15:16:50 +0000 | [diff] [blame] | 38 | public class BundleDependencyImpl extends DependencyBase implements BundleDependency, BundleTrackerCustomizer, ServiceComponentDependency { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 39 | private final BundleContext m_context; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 40 | private boolean m_isStarted; |
| 41 | private BundleTracker m_tracker; |
Marcel Offermans | d66c5ce | 2009-11-26 09:58:44 +0000 | [diff] [blame] | 42 | private int m_stateMask = Bundle.INSTALLED | Bundle.RESOLVED | Bundle.ACTIVE; |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 43 | private List m_services = new ArrayList(); |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 44 | private boolean m_isAvailable; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 45 | |
| 46 | private Object m_callbackInstance; |
| 47 | private String m_callbackAdded; |
| 48 | private String m_callbackChanged; |
| 49 | private String m_callbackRemoved; |
| 50 | private boolean m_autoConfig; |
| 51 | private Bundle m_bundleInstance; |
| 52 | private Filter m_filter; |
| 53 | private long m_bundleId = -1; |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 54 | private boolean m_propagate; |
| 55 | private String m_autoConfigInstance; |
| 56 | private Object m_nullObject; |
| 57 | private boolean m_autoConfigInvoked; |
| 58 | |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 59 | |
Pierre De Rop | e4d80b9 | 2009-12-04 22:48:32 +0000 | [diff] [blame] | 60 | public BundleDependencyImpl(BundleContext context, Logger logger) { |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 61 | super(logger); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 62 | m_context = context; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 63 | m_autoConfig = true; |
| 64 | } |
| 65 | |
Marcel Offermans | 61a8114 | 2010-04-02 15:16:50 +0000 | [diff] [blame] | 66 | public BundleDependency setInstanceBound(boolean isInstanceBound) { |
| 67 | setIsInstanceBound(isInstanceBound); |
| 68 | return this; |
| 69 | } |
| 70 | |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 71 | public synchronized boolean isAvailable() { |
| 72 | return m_isAvailable; |
| 73 | } |
| 74 | |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 75 | public void start(DependencyService service) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 76 | boolean needsStarting = false; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 77 | synchronized (this) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 78 | m_services.add(service); |
| 79 | if (!m_isStarted) { |
| 80 | m_tracker = new BundleTracker(m_context, m_stateMask, this); |
| 81 | m_isStarted = true; |
| 82 | needsStarting = true; |
| 83 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 84 | } |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 85 | if (needsStarting) { |
| 86 | m_tracker.open(); |
| 87 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 88 | } |
| 89 | |
| 90 | public void stop(DependencyService service) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 91 | boolean needsStopping = false; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 92 | synchronized (this) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 93 | if (m_services.size() == 1 && m_services.contains(service)) { |
| 94 | m_isStarted = false; |
| 95 | needsStopping = true; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 96 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 97 | } |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 98 | if (needsStopping) { |
| 99 | m_tracker.close(); |
| 100 | m_tracker = null; |
| 101 | m_services.remove(service); |
| 102 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | public String getName() { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 106 | StringBuilder sb = new StringBuilder(); |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 107 | if (m_bundleInstance != null) { |
| 108 | sb.append(m_bundleInstance.getSymbolicName()); |
| 109 | sb.append(' '); |
| 110 | sb.append(m_bundleInstance.getHeaders().get("Bundle-Version")); |
| 111 | sb.append(' '); |
| 112 | } |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 113 | sb.append(Integer.toString(m_stateMask, 2)); |
| 114 | if (m_filter != null) { |
| 115 | sb.append(' '); |
| 116 | sb.append(m_filter.toString()); |
| 117 | } |
| 118 | return sb.toString(); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | public int getState() { |
| 122 | // TODO Auto-generated method stub |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | public String getType() { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 127 | return "bundle"; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | public Object addingBundle(Bundle bundle, BundleEvent event) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 131 | // if we don't like a bundle, we could reject it here by returning null |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 132 | long bundleId = bundle.getBundleId(); |
| 133 | if (m_bundleId >= 0 && m_bundleId != bundleId) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 134 | return null; |
| 135 | } |
| 136 | Filter filter = m_filter; |
| 137 | if (filter != null) { |
| 138 | Dictionary headers = bundle.getHeaders(); |
| 139 | if (!m_filter.match(headers)) { |
| 140 | return null; |
| 141 | } |
| 142 | } |
| 143 | return bundle; |
| 144 | } |
| 145 | |
| 146 | public void addedBundle(Bundle bundle, BundleEvent event, Object object) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 147 | boolean makeAvailable = makeAvailable(); |
| 148 | Object[] services = m_services.toArray(); |
| 149 | for (int i = 0; i < services.length; i++) { |
| 150 | DependencyService ds = (DependencyService) services[i]; |
| 151 | if (makeAvailable) { |
| 152 | ds.dependencyAvailable(this); |
| 153 | if (!isRequired()) { |
| 154 | invokeAdded(ds, bundle); |
| 155 | } |
| 156 | } |
| 157 | else { |
| 158 | ds.dependencyChanged(this); |
| 159 | invokeAdded(ds, bundle); |
| 160 | } |
| 161 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | public void modifiedBundle(Bundle bundle, BundleEvent event, Object object) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 165 | Object[] services = m_services.toArray(); |
| 166 | for (int i = 0; i < services.length; i++) { |
| 167 | DependencyService ds = (DependencyService) services[i]; |
| 168 | ds.dependencyChanged(this); |
| 169 | if (ds.isRegistered()) { |
| 170 | invokeChanged(ds, bundle); |
| 171 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 172 | } |
| 173 | } |
| 174 | |
| 175 | public void removedBundle(Bundle bundle, BundleEvent event, Object object) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 176 | boolean makeUnavailable = makeUnavailable(); |
| 177 | Object[] services = m_services.toArray(); |
| 178 | for (int i = 0; i < services.length; i++) { |
| 179 | DependencyService ds = (DependencyService) services[i]; |
| 180 | if (makeUnavailable) { |
| 181 | ds.dependencyUnavailable(this); |
| 182 | if (!isRequired()) { |
| 183 | invokeRemoved(ds, bundle); |
| 184 | } |
Marcel Offermans | 9f3c5f4 | 2009-11-26 11:17:36 +0000 | [diff] [blame] | 185 | } |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 186 | else { |
| 187 | ds.dependencyChanged(this); |
| 188 | invokeRemoved(ds, bundle); |
| 189 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 190 | } |
| 191 | } |
| 192 | |
| 193 | private synchronized boolean makeAvailable() { |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 194 | if (!isAvailable()) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 195 | m_isAvailable = true; |
| 196 | return true; |
| 197 | } |
| 198 | return false; |
| 199 | } |
| 200 | |
| 201 | private synchronized boolean makeUnavailable() { |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 202 | if ((isAvailable()) && (m_tracker.getTrackingCount() == 0)) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 203 | m_isAvailable = false; |
| 204 | return true; |
| 205 | } |
| 206 | return false; |
| 207 | } |
| 208 | |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 209 | public void invokeAdded(DependencyService dependencyService, Bundle service) { |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame^] | 210 | invoke(dependencyService, service, m_callbackAdded); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 211 | } |
| 212 | |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 213 | public void invokeChanged(DependencyService dependencyService, Bundle service) { |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame^] | 214 | invoke(dependencyService, service, m_callbackChanged); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 215 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 216 | |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 217 | public void invokeRemoved(DependencyService dependencyService, Bundle service) { |
Marcel Offermans | ea89b86 | 2010-06-24 13:14:43 +0000 | [diff] [blame^] | 218 | invoke(dependencyService, service, m_callbackRemoved); |
| 219 | } |
| 220 | |
| 221 | public void invoke(DependencyService dependencyService, Bundle service, String name) { |
| 222 | if (name != null) { |
| 223 | dependencyService.invokeCallbackMethod(getCallbackInstances(dependencyService), name, |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 224 | new Class[][] {{Bundle.class}, {Object.class}, {}}, |
| 225 | new Object[][] {{service}, {service}, {}} |
| 226 | ); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 227 | } |
| 228 | } |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 229 | |
| 230 | private synchronized Object[] getCallbackInstances(DependencyService dependencyService) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 231 | if (m_callbackInstance == null) { |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 232 | return dependencyService.getCompositionInstances(); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 233 | } |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 234 | else { |
| 235 | return new Object[] { m_callbackInstance }; |
| 236 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 237 | } |
Marcel Offermans | cae6136 | 2009-12-01 08:37:10 +0000 | [diff] [blame] | 238 | |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 239 | /** |
| 240 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 241 | * dependency is added or removed. When you specify callbacks, the auto configuration |
| 242 | * feature is automatically turned off, because we're assuming you don't need it in this |
| 243 | * case. |
| 244 | * |
| 245 | * @param added the method to call when a service was added |
| 246 | * @param removed the method to call when a service was removed |
| 247 | * @return this service dependency |
| 248 | */ |
| 249 | public synchronized BundleDependency setCallbacks(String added, String removed) { |
| 250 | return setCallbacks(null, added, null, removed); |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 255 | * dependency is added, changed or removed. When you specify callbacks, the auto |
| 256 | * configuration feature is automatically turned off, because we're assuming you don't |
| 257 | * need it in this case. |
| 258 | * |
| 259 | * @param added the method to call when a service was added |
| 260 | * @param changed the method to call when a service was changed |
| 261 | * @param removed the method to call when a service was removed |
| 262 | * @return this service dependency |
| 263 | */ |
| 264 | public synchronized BundleDependency setCallbacks(String added, String changed, String removed) { |
| 265 | return setCallbacks(null, added, changed, removed); |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 270 | * dependency is added or removed. They are called on the instance you provide. When you |
| 271 | * specify callbacks, the auto configuration feature is automatically turned off, because |
| 272 | * we're assuming you don't need it in this case. |
| 273 | * |
| 274 | * @param instance the instance to call the callbacks on |
| 275 | * @param added the method to call when a service was added |
| 276 | * @param removed the method to call when a service was removed |
| 277 | * @return this service dependency |
| 278 | */ |
| 279 | public synchronized BundleDependency setCallbacks(Object instance, String added, String removed) { |
| 280 | return setCallbacks(instance, added, null, removed); |
| 281 | } |
| 282 | |
| 283 | /** |
| 284 | * Sets the callbacks for this service. These callbacks can be used as hooks whenever a |
| 285 | * dependency is added, changed or removed. They are called on the instance you provide. When you |
| 286 | * specify callbacks, the auto configuration feature is automatically turned off, because |
| 287 | * we're assuming you don't need it in this case. |
| 288 | * |
| 289 | * @param instance the instance to call the callbacks on |
| 290 | * @param added the method to call when a service was added |
| 291 | * @param changed the method to call when a service was changed |
| 292 | * @param removed the method to call when a service was removed |
| 293 | * @return this service dependency |
| 294 | */ |
| 295 | public synchronized BundleDependency setCallbacks(Object instance, String added, String changed, String removed) { |
| 296 | ensureNotActive(); |
| 297 | // if at least one valid callback is specified, we turn off auto configuration |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 298 | if ((added != null || removed != null || changed != null) && ! m_autoConfigInvoked) { |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 299 | setAutoConfig(false); |
| 300 | } |
| 301 | m_callbackInstance = instance; |
| 302 | m_callbackAdded = added; |
| 303 | m_callbackChanged = changed; |
| 304 | m_callbackRemoved = removed; |
| 305 | return this; |
| 306 | } |
| 307 | |
| 308 | private void ensureNotActive() { |
| 309 | if (m_tracker != null) { |
| 310 | throw new IllegalStateException("Cannot modify state while active."); |
| 311 | } |
| 312 | } |
| 313 | public synchronized BundleDependency setAutoConfig(boolean autoConfig) { |
| 314 | ensureNotActive(); |
| 315 | m_autoConfig = autoConfig; |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 316 | m_autoConfigInvoked = true; |
| 317 | return this; |
| 318 | } |
| 319 | |
| 320 | public synchronized BundleDependency setAutoConfig(String instanceName) { |
| 321 | ensureNotActive(); |
| 322 | m_autoConfig = (instanceName != null); |
| 323 | m_autoConfigInstance = instanceName; |
| 324 | m_autoConfigInvoked = true; |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 325 | return this; |
| 326 | } |
| 327 | |
| 328 | public synchronized BundleDependency setRequired(boolean required) { |
| 329 | ensureNotActive(); |
Marcel Offermans | b196d72 | 2009-11-26 17:12:12 +0000 | [diff] [blame] | 330 | setIsRequired(required); |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 331 | return this; |
| 332 | } |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 333 | |
| 334 | public BundleDependency setPropagate(boolean propagate) { |
| 335 | ensureNotActive(); |
| 336 | m_propagate = propagate; |
| 337 | return this; |
| 338 | } |
| 339 | |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 340 | public BundleDependency setBundle(Bundle bundle) { |
| 341 | m_bundleId = bundle.getBundleId(); |
| 342 | return this; |
| 343 | } |
| 344 | |
| 345 | public BundleDependency setFilter(String filter) throws IllegalArgumentException { |
| 346 | if (filter != null) { |
| 347 | try { |
| 348 | m_filter = m_context.createFilter(filter); |
| 349 | } |
| 350 | catch (InvalidSyntaxException e) { |
| 351 | throw new IllegalArgumentException(e.getMessage()); |
| 352 | } |
| 353 | } |
| 354 | return this; |
| 355 | } |
| 356 | |
| 357 | public BundleDependency setStateMask(int mask) { |
| 358 | m_stateMask = mask; |
| 359 | return this; |
| 360 | } |
| 361 | |
| 362 | public synchronized boolean isAutoConfig() { |
| 363 | return m_autoConfig; |
| 364 | } |
| 365 | |
| 366 | public Bundle getBundle() { |
| 367 | Bundle[] bundles = m_tracker.getBundles(); |
| 368 | if (bundles != null && bundles.length > 0) { |
| 369 | return bundles[0]; |
| 370 | } |
| 371 | return null; |
| 372 | } |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 373 | |
| 374 | public Object getAutoConfigInstance() { |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 375 | return lookupBundle(); |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 376 | } |
| 377 | |
Marcel Offermans | ad76067 | 2010-03-03 15:30:01 +0000 | [diff] [blame] | 378 | public Bundle lookupBundle() { |
| 379 | Bundle service = null; |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 380 | if (m_isStarted) { |
| 381 | service = getBundle(); |
| 382 | } |
| 383 | else { |
| 384 | Bundle[] bundles = m_context.getBundles(); |
| 385 | for (int i = 0; i < bundles.length; i++) { |
| 386 | if ((bundles[i].getState() & m_stateMask) > 0) { |
Marcel Offermans | 9ace4f4 | 2010-02-16 16:25:38 +0000 | [diff] [blame] | 387 | Filter filter = m_filter; |
| 388 | if (filter == null) { |
| 389 | service = bundles[i]; |
| 390 | break; |
| 391 | } |
| 392 | else if (filter.match(bundles[i].getHeaders())) { |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 393 | service = bundles[i]; |
| 394 | break; |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | } |
| 399 | if (service == null && isAutoConfig()) { |
| 400 | // TODO does it make sense to add support for custom bundle impls? |
| 401 | // service = getDefaultImplementation(); |
| 402 | if (service == null) { |
| 403 | service = getNullObject(); |
| 404 | } |
| 405 | } |
| 406 | return service; |
| 407 | } |
| 408 | |
Marcel Offermans | ad76067 | 2010-03-03 15:30:01 +0000 | [diff] [blame] | 409 | private Bundle getNullObject() { |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 410 | if (m_nullObject == null) { |
| 411 | try { |
| 412 | m_nullObject = Proxy.newProxyInstance(getClass().getClassLoader(), new Class[] { Bundle.class }, new DefaultNullObject()); |
| 413 | } |
| 414 | catch (Exception e) { |
| 415 | m_logger.log(Logger.LOG_ERROR, "Could not create null object for Bundle.", e); |
| 416 | } |
| 417 | } |
Marcel Offermans | ad76067 | 2010-03-03 15:30:01 +0000 | [diff] [blame] | 418 | return (Bundle) m_nullObject; |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 419 | } |
| 420 | |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 421 | public String getAutoConfigName() { |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 422 | return m_autoConfigInstance; |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | public Class getAutoConfigType() { |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 426 | return Bundle.class; |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | public void invokeAdded(DependencyService service) { |
| 430 | // we remember these for future reference, needed for required service callbacks |
Marcel Offermans | ad76067 | 2010-03-03 15:30:01 +0000 | [diff] [blame] | 431 | m_bundleInstance = lookupBundle(); |
Marcel Offermans | 001db05 | 2009-12-08 08:58:40 +0000 | [diff] [blame] | 432 | invokeAdded(service, m_bundleInstance); |
| 433 | } |
| 434 | |
| 435 | public void invokeRemoved(DependencyService service) { |
| 436 | invokeRemoved(service, m_bundleInstance); |
| 437 | m_bundleInstance = null; |
| 438 | } |
Marcel Offermans | 117aa2f | 2009-12-10 09:48:17 +0000 | [diff] [blame] | 439 | |
| 440 | public Dictionary getProperties() { |
| 441 | // TODO Auto-generated method stub |
| 442 | return null; |
| 443 | } |
| 444 | |
| 445 | public boolean isPropagated() { |
Marcel Offermans | d665eaf | 2010-02-16 15:56:35 +0000 | [diff] [blame] | 446 | return m_propagate; |
Marcel Offermans | 117aa2f | 2009-12-10 09:48:17 +0000 | [diff] [blame] | 447 | } |
Marcel Offermans | e14b342 | 2009-11-25 23:04:32 +0000 | [diff] [blame] | 448 | } |