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package org.mule.registry; |
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import org.mule.MuleServer; |
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import org.mule.RegistryContext; |
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import org.mule.api.MuleException; |
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import org.mule.api.MuleRuntimeException; |
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import org.mule.api.agent.Agent; |
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import org.mule.api.config.MuleProperties; |
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import org.mule.api.context.MuleContextAware; |
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import org.mule.api.endpoint.EndpointBuilder; |
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import org.mule.api.endpoint.EndpointFactory; |
22 | |
import org.mule.api.endpoint.ImmutableEndpoint; |
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import org.mule.api.lifecycle.Disposable; |
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import org.mule.api.lifecycle.Initialisable; |
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import org.mule.api.lifecycle.InitialisationException; |
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import org.mule.api.lifecycle.LifecycleManager; |
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import org.mule.api.model.Model; |
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import org.mule.api.registry.RegistrationException; |
29 | |
import org.mule.api.registry.Registry; |
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import org.mule.api.service.Service; |
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import org.mule.api.transformer.DiscoverableTransformer; |
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import org.mule.api.transformer.Transformer; |
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import org.mule.api.transformer.TransformerException; |
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import org.mule.api.transport.Connector; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.transformer.TransformerCollection; |
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import org.mule.transformer.TransformerWeighting; |
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import org.mule.transformer.simple.ObjectToByteArray; |
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import org.mule.transformer.simple.ObjectToString; |
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import org.mule.util.CollectionUtils; |
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import org.mule.util.UUID; |
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import org.mule.util.expression.ExpressionEvaluatorManager; |
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|
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.List; |
48 | |
import java.util.Map; |
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|
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import edu.emory.mathcs.backport.java.util.concurrent.ConcurrentHashMap; |
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|
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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public abstract class AbstractRegistry implements Registry |
57 | |
{ |
58 | 2 | private static final ObjectToString objectToString = new ObjectToString(); |
59 | 2 | private static final ObjectToByteArray objectToByteArray = new ObjectToByteArray(); |
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|
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private Registry parent; |
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|
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private String id; |
64 | |
|
65 | 1160 | private int defaultScope = DEFAULT_SCOPE; |
66 | |
|
67 | 1160 | protected transient Log logger = LogFactory.getLog(getClass()); |
68 | |
|
69 | |
protected LifecycleManager lifecycleManager; |
70 | 1160 | protected Map transformerListCache = new ConcurrentHashMap(8); |
71 | 1160 | protected Map exactTransformerCache = new ConcurrentHashMap(8); |
72 | |
|
73 | |
|
74 | |
protected AbstractRegistry(String id) |
75 | 1160 | { |
76 | 1160 | if (id == null) |
77 | |
{ |
78 | 0 | throw new MuleRuntimeException(CoreMessages.objectIsNull("RegistryID")); |
79 | |
} |
80 | 1160 | this.id = id; |
81 | 1160 | lifecycleManager = createLifecycleManager(); |
82 | 1160 | } |
83 | |
|
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protected AbstractRegistry(String id, Registry parent) |
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{ |
86 | 0 | this(id); |
87 | 0 | setParent(parent); |
88 | 0 | } |
89 | |
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90 | |
protected abstract LifecycleManager createLifecycleManager(); |
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92 | |
protected LifecycleManager getLifecycleManager() |
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{ |
94 | 0 | return lifecycleManager; |
95 | |
} |
96 | |
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97 | |
public final synchronized void dispose() |
98 | |
{ |
99 | |
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100 | |
|
101 | 1144 | if (isDisposed()) |
102 | |
{ |
103 | 0 | return; |
104 | |
} |
105 | |
|
106 | |
try |
107 | |
{ |
108 | 1144 | exactTransformerCache.clear(); |
109 | 1144 | transformerListCache.clear(); |
110 | |
|
111 | 1144 | doDispose(); |
112 | 1144 | lifecycleManager.firePhase(MuleServer.getMuleContext(), Disposable.PHASE_NAME); |
113 | 1144 | if (getParent() != null) |
114 | |
{ |
115 | 0 | parent.dispose(); |
116 | |
} |
117 | |
else |
118 | |
{ |
119 | |
|
120 | 1144 | RegistryContext.setRegistry(null); |
121 | 1144 | ExpressionEvaluatorManager.clearEvaluators(); |
122 | |
} |
123 | |
} |
124 | 0 | catch (MuleException e) |
125 | |
{ |
126 | |
|
127 | 0 | logger.error("Failed to cleanly dispose: " + e.getMessage(), e); |
128 | 1144 | } |
129 | 1144 | } |
130 | |
|
131 | |
protected void doDispose() |
132 | |
{ |
133 | |
|
134 | 1144 | } |
135 | |
|
136 | |
public boolean isDisposed() |
137 | |
{ |
138 | 1144 | return lifecycleManager.isPhaseComplete(Disposable.PHASE_NAME); |
139 | |
} |
140 | |
|
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public boolean isDisposing() |
142 | |
{ |
143 | 0 | return Disposable.PHASE_NAME.equals(lifecycleManager.getExecutingPhase()); |
144 | |
} |
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|
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public boolean isInitialised() |
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{ |
148 | 33436 | return lifecycleManager.isPhaseComplete(Initialisable.PHASE_NAME); |
149 | |
} |
150 | |
|
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public boolean isInitialising() |
152 | |
{ |
153 | 0 | return Initialisable.PHASE_NAME.equals(lifecycleManager.getExecutingPhase()); |
154 | |
} |
155 | |
|
156 | |
public final void initialise() throws InitialisationException |
157 | |
{ |
158 | 1160 | lifecycleManager.checkPhase(Initialisable.PHASE_NAME); |
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172 | 1160 | if (id == null) |
173 | |
{ |
174 | 0 | logger.warn("No unique id has been set on this registry"); |
175 | 0 | id = UUID.getUUID(); |
176 | |
} |
177 | |
try |
178 | |
{ |
179 | 1160 | doInitialise(); |
180 | 1160 | lifecycleManager.firePhase(MuleServer.getMuleContext(), Initialisable.PHASE_NAME); |
181 | |
} |
182 | 0 | catch (InitialisationException e) |
183 | |
{ |
184 | 0 | throw e; |
185 | |
} |
186 | 0 | catch (Exception e) |
187 | |
{ |
188 | 0 | throw new InitialisationException(e, this); |
189 | 1160 | } |
190 | 1160 | } |
191 | |
|
192 | |
protected void doInitialise() throws InitialisationException |
193 | |
{ |
194 | |
|
195 | 0 | } |
196 | |
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197 | |
|
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public Connector lookupConnector(String name) |
199 | |
{ |
200 | 76 | return (Connector) lookupObject(name); |
201 | |
} |
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public ImmutableEndpoint lookupEndpoint(String name) |
218 | |
{ |
219 | 0 | Object obj = lookupObject(name); |
220 | 0 | if (obj instanceof ImmutableEndpoint) |
221 | |
{ |
222 | 0 | return (ImmutableEndpoint) obj; |
223 | |
} |
224 | |
else |
225 | |
{ |
226 | 0 | logger.debug("No endpoint with the name: " |
227 | |
+ name |
228 | |
+ "found. If " |
229 | |
+ name |
230 | |
+ " is a global endpoint you should use the EndpointFactory to create endpoint instances from global endpoints."); |
231 | 0 | return null; |
232 | |
} |
233 | |
} |
234 | |
|
235 | |
public EndpointBuilder lookupEndpointBuilder(String name) |
236 | |
{ |
237 | 50 | Object o = lookupObject(name); |
238 | 50 | if (o instanceof EndpointBuilder) |
239 | |
{ |
240 | 16 | logger.debug("Global endpoint EndpointBuilder for name: " + name + " found"); |
241 | 16 | return (EndpointBuilder) o; |
242 | |
} |
243 | |
else |
244 | |
{ |
245 | 34 | logger.debug("No endpoint builder with the name: " + name + " found."); |
246 | 34 | return null; |
247 | |
} |
248 | |
} |
249 | |
|
250 | |
public EndpointFactory lookupEndpointFactory() |
251 | |
{ |
252 | 456 | return (EndpointFactory) lookupObject(MuleProperties.OBJECT_MULE_ENDPOINT_FACTORY); |
253 | |
} |
254 | |
|
255 | |
public Transformer lookupTransformer(String name) |
256 | |
{ |
257 | 4594 | return (Transformer) lookupObject(name); |
258 | |
} |
259 | |
|
260 | |
|
261 | |
public Transformer lookupTransformer(Class inputType, Class outputType) throws TransformerException |
262 | |
{ |
263 | 18 | Transformer result = (Transformer) exactTransformerCache.get(inputType.getName() + outputType.getName()); |
264 | 18 | if (result != null) |
265 | |
{ |
266 | 0 | return result; |
267 | |
} |
268 | 18 | List trans = lookupTransformers(inputType, outputType); |
269 | |
|
270 | 18 | result = getNearestTransformerMatch(trans, inputType, outputType); |
271 | |
|
272 | |
|
273 | 18 | Transformer secondPass = null; |
274 | |
|
275 | 18 | if (result == null) |
276 | |
{ |
277 | |
|
278 | |
|
279 | 0 | if (outputType.equals(String.class)) |
280 | |
{ |
281 | 0 | secondPass = objectToString; |
282 | |
} |
283 | 0 | else if (outputType.equals(byte[].class)) |
284 | |
{ |
285 | 0 | secondPass = objectToByteArray; |
286 | |
} |
287 | |
else |
288 | |
{ |
289 | 0 | throw new TransformerException(CoreMessages.noTransformerFoundForMessage(inputType, outputType)); |
290 | |
} |
291 | |
|
292 | 0 | trans = lookupTransformers(inputType, Object.class); |
293 | |
|
294 | 0 | result = getNearestTransformerMatch(trans, inputType, outputType); |
295 | 0 | if (result != null) |
296 | |
{ |
297 | 0 | result = new TransformerCollection(new Transformer[]{result, secondPass}); |
298 | |
} |
299 | |
} |
300 | |
|
301 | 18 | if (result != null) |
302 | |
{ |
303 | 18 | exactTransformerCache.put(inputType.getName() + outputType.getName(), result); |
304 | |
} |
305 | 18 | return result; |
306 | |
} |
307 | |
|
308 | |
protected Transformer getNearestTransformerMatch(List trans, Class input, Class output) throws TransformerException |
309 | |
{ |
310 | 18 | if (trans.size() > 1) |
311 | |
{ |
312 | 4 | TransformerWeighting weighting = null; |
313 | 4 | for (Iterator iterator = trans.iterator(); iterator.hasNext();) |
314 | |
{ |
315 | 8 | Transformer transformer = (Transformer) iterator.next(); |
316 | 8 | TransformerWeighting current = new TransformerWeighting(input, output, transformer); |
317 | 8 | if (weighting == null) |
318 | |
{ |
319 | 4 | weighting = current; |
320 | |
} |
321 | |
else |
322 | |
{ |
323 | 4 | int compare = current.compareTo(weighting); |
324 | 4 | if (compare == 1) |
325 | |
{ |
326 | 2 | weighting = current; |
327 | |
} |
328 | 2 | else if (compare == 0) |
329 | |
{ |
330 | |
|
331 | 0 | if (!weighting.getTransformer().getClass().equals(current.getTransformer().getClass())) |
332 | |
{ |
333 | 0 | throw new TransformerException(CoreMessages.transformHasMultipleMatches(input, output, |
334 | |
current.getTransformer(), weighting.getTransformer())); |
335 | |
} |
336 | |
} |
337 | |
} |
338 | 8 | } |
339 | 4 | return weighting.getTransformer(); |
340 | |
} |
341 | 14 | else if (trans.size() == 0) |
342 | |
{ |
343 | 0 | return null; |
344 | |
} |
345 | |
else |
346 | |
{ |
347 | 14 | return (Transformer) trans.get(0); |
348 | |
} |
349 | |
} |
350 | |
|
351 | |
|
352 | |
public List lookupTransformers(Class input, Class output) |
353 | |
{ |
354 | 20 | List results = (List) transformerListCache.get(input.getName() + output.getName()); |
355 | 20 | if (results != null) |
356 | |
{ |
357 | 2 | return results; |
358 | |
} |
359 | |
|
360 | 18 | results = new ArrayList(2); |
361 | 18 | Collection transformers = getTransformers(); |
362 | 18 | for (Iterator itr = transformers.iterator(); itr.hasNext();) |
363 | |
{ |
364 | 82 | Transformer t = (Transformer) itr.next(); |
365 | |
|
366 | |
|
367 | 82 | if (!(t instanceof DiscoverableTransformer)) |
368 | |
{ |
369 | 0 | continue; |
370 | |
} |
371 | 82 | Class c = t.getReturnClass(); |
372 | |
|
373 | 82 | if (c == null) |
374 | |
{ |
375 | 0 | c = Object.class; |
376 | |
} |
377 | 82 | if (output.isAssignableFrom(c) |
378 | |
&& t.isSourceTypeSupported(input)) |
379 | |
{ |
380 | 22 | results.add(t); |
381 | |
} |
382 | 82 | } |
383 | |
|
384 | 18 | transformerListCache.put(input.getName() + output.getName(), results); |
385 | 18 | return results; |
386 | |
} |
387 | |
|
388 | |
public Model lookupModel(String name) |
389 | |
{ |
390 | 8 | return (Model) lookupObject(name); |
391 | |
} |
392 | |
|
393 | |
public Model lookupSystemModel() |
394 | |
{ |
395 | 0 | return lookupModel(MuleProperties.OBJECT_SYSTEM_MODEL); |
396 | |
} |
397 | |
|
398 | |
public Collection getModels() |
399 | |
{ |
400 | 1160 | return lookupObjects(Model.class); |
401 | |
} |
402 | |
|
403 | |
public Collection getConnectors() |
404 | |
{ |
405 | 1160 | return lookupObjects(Connector.class); |
406 | |
} |
407 | |
|
408 | |
public Collection getAgents() |
409 | |
{ |
410 | 1160 | return lookupObjects(Agent.class); |
411 | |
} |
412 | |
|
413 | |
public Collection getEndpoints() |
414 | |
{ |
415 | 1160 | return lookupObjects(ImmutableEndpoint.class); |
416 | |
} |
417 | |
|
418 | |
public Collection getTransformers() |
419 | |
{ |
420 | 1178 | return lookupObjects(Transformer.class); |
421 | |
} |
422 | |
|
423 | |
public Agent lookupAgent(String name) |
424 | |
{ |
425 | 0 | return (Agent) lookupObject(name); |
426 | |
} |
427 | |
|
428 | |
public Service lookupService(String name) |
429 | |
{ |
430 | 2 | return (Service) lookupObject(name); |
431 | |
} |
432 | |
|
433 | |
public Collection lookupServices() |
434 | |
{ |
435 | 1160 | return lookupObjects(Service.class); |
436 | |
} |
437 | |
|
438 | |
public Collection lookupServices(String model) |
439 | |
{ |
440 | 0 | Collection components = lookupServices(); |
441 | 0 | List modelComponents = new ArrayList(); |
442 | 0 | Iterator it = components.iterator(); |
443 | |
Service service; |
444 | 0 | while (it.hasNext()) |
445 | |
{ |
446 | 0 | service = (Service) it.next(); |
447 | |
|
448 | 0 | if (model.equals(service.getModel().getName())) |
449 | |
{ |
450 | 0 | modelComponents.add(service); |
451 | |
} |
452 | |
} |
453 | 0 | return modelComponents; |
454 | |
} |
455 | |
|
456 | |
public final Object lookupObject(String key, int scope) |
457 | |
{ |
458 | 10024 | logger.debug("lookupObject: key=" + key + " scope=" + scope); |
459 | 10024 | Object o = doLookupObject(key); |
460 | |
|
461 | 10024 | if (o == null) |
462 | |
{ |
463 | 5674 | if (logger.isDebugEnabled()) |
464 | |
{ |
465 | 0 | logger.debug("Failed to find object in Registry ID: " + getRegistryId()); |
466 | |
} |
467 | 5674 | if (getParent() != null && scope > SCOPE_IMMEDIATE) |
468 | |
{ |
469 | 0 | if (getParent().isRemote() && scope == SCOPE_REMOTE) |
470 | |
{ |
471 | 0 | o = getParent().lookupObject(key); |
472 | |
} |
473 | 0 | else if (!getParent().isRemote() && scope >= SCOPE_LOCAL) |
474 | |
{ |
475 | 0 | o = getParent().lookupObject(key); |
476 | |
} |
477 | |
} |
478 | |
} |
479 | 10024 | return o; |
480 | |
} |
481 | |
|
482 | |
public final Object lookupObject(Class type) throws RegistrationException |
483 | |
{ |
484 | 0 | return lookupObject(type, getDefaultScope()); |
485 | |
} |
486 | |
|
487 | |
|
488 | |
|
489 | |
|
490 | |
|
491 | |
|
492 | |
public final Object lookupObject(Class type, int scope) throws RegistrationException |
493 | |
{ |
494 | 0 | Collection collection = lookupObjects(type, scope); |
495 | 0 | if (collection == null || collection.size() < 1) |
496 | |
{ |
497 | 0 | return null; |
498 | |
} |
499 | 0 | else if (collection.size() > 1) |
500 | |
{ |
501 | 0 | throw new RegistrationException("More than one object of type " + type + " was found in registry, but only 1 was expected."); |
502 | |
} |
503 | |
else |
504 | |
{ |
505 | 0 | return collection.iterator().next(); |
506 | |
} |
507 | |
} |
508 | |
|
509 | |
public final Collection lookupObjects(Class type) |
510 | |
{ |
511 | 8186 | return lookupObjects(type, getDefaultScope()); |
512 | |
} |
513 | |
|
514 | |
public final Collection lookupObjects(Class type, int scope) |
515 | |
{ |
516 | 65002 | logger.debug("lookupObjects: type=" + type + " scope=" + scope); |
517 | 65002 | Collection collection = doLookupObjects(type); |
518 | 65002 | if (collection == null) |
519 | |
{ |
520 | 22162 | collection = new ArrayList(); |
521 | |
} |
522 | |
|
523 | 65002 | if (getParent() != null && scope > SCOPE_IMMEDIATE) |
524 | |
{ |
525 | 0 | if (getParent().isRemote() && scope == SCOPE_REMOTE) |
526 | |
{ |
527 | 0 | Collection collection2 = getParent().lookupObjects(type); |
528 | 0 | if (collection2 != null) |
529 | |
{ |
530 | 0 | collection.addAll(collection2); |
531 | |
} |
532 | 0 | } |
533 | 0 | else if (!getParent().isRemote() && scope >= SCOPE_LOCAL) |
534 | |
{ |
535 | 0 | Collection collection2 = getParent().lookupObjects(type); |
536 | 0 | if (collection2 != null) |
537 | |
{ |
538 | 0 | collection = CollectionUtils.union(collection, collection2); |
539 | |
} |
540 | |
} |
541 | |
} |
542 | |
|
543 | 65002 | return collection; |
544 | |
} |
545 | |
|
546 | |
protected abstract Collection doLookupObjects(Class type); |
547 | |
|
548 | |
public Object lookupObject(String key) |
549 | |
{ |
550 | 10024 | return lookupObject(key, getDefaultScope()); |
551 | |
} |
552 | |
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553 | |
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554 | |
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555 | |
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556 | |
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557 | |
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558 | |
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559 | |
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560 | |
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609 | |
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611 | |
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616 | |
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619 | |
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622 | |
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623 | |
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624 | |
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625 | |
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626 | |
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627 | |
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628 | |
protected abstract Object doLookupObject(String key); |
629 | |
|
630 | |
protected void unsupportedOperation(String operation, Object o) throws UnsupportedOperationException |
631 | |
{ |
632 | 0 | throw new UnsupportedOperationException( |
633 | |
"Registry: " |
634 | |
+ getRegistryId() |
635 | |
+ " is read-only so objects cannot be registered or unregistered. Failed to execute operation " |
636 | |
+ operation + " on object: " + o); |
637 | |
} |
638 | |
|
639 | |
public final void registerObject(String key, Object value) throws RegistrationException |
640 | |
{ |
641 | 13112 | registerObject(key, value, null); |
642 | 13112 | } |
643 | |
|
644 | |
public final void registerObject(String key, |
645 | |
Object value, |
646 | |
Object metadata) throws RegistrationException |
647 | |
{ |
648 | |
|
649 | 33436 | logger.debug("registerObject: key=" + key + " value=" + value + " metadata=" + metadata); |
650 | 33436 | if (value instanceof MuleContextAware) |
651 | |
{ |
652 | 5032 | ((MuleContextAware) value).setMuleContext(MuleServer.getMuleContext()); |
653 | |
} |
654 | 33436 | doRegisterObject(key, value, metadata); |
655 | 33436 | } |
656 | |
|
657 | |
protected abstract void doRegisterObject(String key, |
658 | |
Object value, |
659 | |
Object metadata) throws RegistrationException; |
660 | |
|
661 | |
public final void registerTransformer(Transformer transformer) throws MuleException |
662 | |
{ |
663 | 4592 | if (transformer instanceof DiscoverableTransformer) |
664 | |
{ |
665 | 4592 | exactTransformerCache.clear(); |
666 | 4592 | transformerListCache.clear(); |
667 | |
} |
668 | 4592 | doRegisterTransformer(transformer); |
669 | |
|
670 | 4592 | } |
671 | |
|
672 | |
protected abstract void doRegisterTransformer(Transformer transformer) throws MuleException; |
673 | |
|
674 | |
|
675 | |
|
676 | |
|
677 | |
|
678 | |
public final String getRegistryId() |
679 | |
{ |
680 | 0 | return id; |
681 | |
} |
682 | |
|
683 | |
public Registry getParent() |
684 | |
{ |
685 | 113376 | return parent; |
686 | |
} |
687 | |
|
688 | |
public void setParent(Registry registry) |
689 | |
{ |
690 | 0 | this.parent = registry; |
691 | 0 | } |
692 | |
|
693 | |
public int getDefaultScope() |
694 | |
{ |
695 | 19370 | return defaultScope; |
696 | |
} |
697 | |
|
698 | |
public void setDefaultScope(int scope) |
699 | |
{ |
700 | 2320 | if (scope < SCOPE_IMMEDIATE || scope > SCOPE_REMOTE) |
701 | |
{ |
702 | 0 | throw new IllegalArgumentException("Invalid value for scope: " + scope); |
703 | |
} |
704 | 2320 | defaultScope = scope; |
705 | 2320 | } |
706 | |
} |