|
|||||||||||||||||||
30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
RegistryImpl.java | 81.8% | 91.3% | 96.7% | 89.6% |
|
1 |
// Copyright 2004 The Apache Software Foundation
|
|
2 |
//
|
|
3 |
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
4 |
// you may not use this file except in compliance with the License.
|
|
5 |
// You may obtain a copy of the License at
|
|
6 |
//
|
|
7 |
// http://www.apache.org/licenses/LICENSE-2.0
|
|
8 |
//
|
|
9 |
// Unless required by applicable law or agreed to in writing, software
|
|
10 |
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
11 |
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
12 |
// See the License for the specific language governing permissions and
|
|
13 |
// limitations under the License.
|
|
14 |
|
|
15 |
package org.apache.hivemind.impl;
|
|
16 |
|
|
17 |
import java.util.Collection;
|
|
18 |
import java.util.HashMap;
|
|
19 |
import java.util.Iterator;
|
|
20 |
import java.util.LinkedList;
|
|
21 |
import java.util.List;
|
|
22 |
import java.util.Locale;
|
|
23 |
import java.util.Map;
|
|
24 |
|
|
25 |
import org.apache.commons.logging.Log;
|
|
26 |
import org.apache.commons.logging.LogFactory;
|
|
27 |
import org.apache.hivemind.ApplicationRuntimeException;
|
|
28 |
import org.apache.hivemind.ErrorHandler;
|
|
29 |
import org.apache.hivemind.HiveMind;
|
|
30 |
import org.apache.hivemind.HiveMindMessages;
|
|
31 |
import org.apache.hivemind.Location;
|
|
32 |
import org.apache.hivemind.Registry;
|
|
33 |
import org.apache.hivemind.ShutdownCoordinator;
|
|
34 |
import org.apache.hivemind.SymbolSource;
|
|
35 |
import org.apache.hivemind.SymbolSourceContribution;
|
|
36 |
import org.apache.hivemind.internal.ConfigurationPoint;
|
|
37 |
import org.apache.hivemind.internal.RegistryInfrastructure;
|
|
38 |
import org.apache.hivemind.internal.ServiceModelFactory;
|
|
39 |
import org.apache.hivemind.internal.ServicePoint;
|
|
40 |
import org.apache.hivemind.order.Orderer;
|
|
41 |
import org.apache.hivemind.schema.Translator;
|
|
42 |
import org.apache.hivemind.service.ThreadEventNotifier;
|
|
43 |
import org.apache.hivemind.util.ToStringBuilder;
|
|
44 |
|
|
45 |
/**
|
|
46 |
* Implementation of {@link org.apache.hivemind.Registry}.
|
|
47 |
*
|
|
48 |
* @author Howard Lewis Ship
|
|
49 |
*/
|
|
50 |
public final class RegistryImpl implements Registry, RegistryInfrastructure |
|
51 |
{ |
|
52 |
private static final String SYMBOL_SOURCES = "hivemind.SymbolSources"; |
|
53 |
private static final Log LOG = LogFactory.getLog(RegistryImpl.class); |
|
54 |
|
|
55 |
/**
|
|
56 |
* Map of {@link ServicePoint} keyed on fully qualified service id.
|
|
57 |
*/
|
|
58 |
private Map _servicePoints = new HashMap(); |
|
59 |
|
|
60 |
/**
|
|
61 |
* Map of List (of {@link ServicePoint}, keyed on service interface.
|
|
62 |
*/
|
|
63 |
private Map _servicePointsByInterface = new HashMap(); |
|
64 |
|
|
65 |
/**
|
|
66 |
* Map of {@link ConfigurationPoint} keyed on fully qualified configuration id.
|
|
67 |
*/
|
|
68 |
private Map _configurationPoints = new HashMap(); |
|
69 |
|
|
70 |
private SymbolSource[] _variableSources;
|
|
71 |
private ErrorHandler _errorHandler;
|
|
72 |
private Locale _locale;
|
|
73 |
private ShutdownCoordinator _shutdownCoordinator;
|
|
74 |
|
|
75 |
/**
|
|
76 |
* Map of {@link ServiceModelFactory}, keyed on service model name,
|
|
77 |
* loaded from <code>hivemind.ServiceModels</code> configuration point.
|
|
78 |
*/
|
|
79 |
private Map _serviceModelFactories;
|
|
80 |
|
|
81 |
private boolean _started = false; |
|
82 |
private boolean _shutdown = false; |
|
83 |
|
|
84 |
private ThreadEventNotifier _threadEventNotifier;
|
|
85 |
private TranslatorManager _translatorManager;
|
|
86 |
|
|
87 | 97 |
public RegistryImpl(ErrorHandler errorHandler, Locale locale)
|
88 |
{ |
|
89 | 97 |
_errorHandler = errorHandler; |
90 | 97 |
_locale = locale; |
91 |
|
|
92 | 97 |
_translatorManager = new TranslatorManager(this, errorHandler); |
93 |
} |
|
94 |
|
|
95 | 11 |
public Locale getLocale()
|
96 |
{ |
|
97 | 11 |
return _locale;
|
98 |
} |
|
99 |
|
|
100 | 1544 |
public void addServicePoint(ServicePoint point) |
101 |
{ |
|
102 | 1544 |
checkStarted(); |
103 |
|
|
104 | 1544 |
_servicePoints.put(point.getExtensionPointId(), point); |
105 |
|
|
106 | 1544 |
addServicePointByInterface(point); |
107 |
} |
|
108 |
|
|
109 | 1544 |
private void addServicePointByInterface(ServicePoint point) |
110 |
{ |
|
111 | 1544 |
Class key = point.getServiceInterface(); |
112 |
|
|
113 | 1544 |
List l = (List) _servicePointsByInterface.get(key); |
114 |
|
|
115 | 1544 |
if (l == null) |
116 |
{ |
|
117 | 1017 |
l = new LinkedList();
|
118 | 1017 |
_servicePointsByInterface.put(key, l); |
119 |
} |
|
120 |
|
|
121 | 1544 |
l.add(point); |
122 |
} |
|
123 |
|
|
124 | 819 |
public void addConfigurationPoint(ConfigurationPoint point) |
125 |
{ |
|
126 | 819 |
checkStarted(); |
127 |
|
|
128 | 819 |
_configurationPoints.put(point.getExtensionPointId(), point); |
129 |
} |
|
130 |
|
|
131 | 2529 |
public ServicePoint getServicePoint(String serviceId)
|
132 |
{ |
|
133 | 2529 |
checkShutdown(); |
134 |
|
|
135 | 2529 |
ServicePoint result = (ServicePoint) _servicePoints.get(serviceId); |
136 |
|
|
137 | 2529 |
if (result == null) |
138 | 0 |
throw new ApplicationRuntimeException(ImplMessages.noSuchServicePoint(serviceId)); |
139 |
|
|
140 | 2529 |
return result;
|
141 |
} |
|
142 |
|
|
143 | 2141 |
public Object getService(String serviceId, Class serviceInterface)
|
144 |
{ |
|
145 | 2141 |
ServicePoint point = getServicePoint(serviceId); |
146 |
|
|
147 | 2141 |
return point.getService(serviceInterface);
|
148 |
} |
|
149 |
|
|
150 | 134 |
public Object getService(Class serviceInterface)
|
151 |
{ |
|
152 | 134 |
List servicePoints = (List) _servicePointsByInterface.get(serviceInterface); |
153 |
|
|
154 | 134 |
if (servicePoints == null) |
155 | 1 |
throw new ApplicationRuntimeException( |
156 |
ImplMessages.noServicePointForInterface(serviceInterface)); |
|
157 |
|
|
158 | 133 |
if (servicePoints.size() > 1)
|
159 | 1 |
throw new ApplicationRuntimeException( |
160 |
ImplMessages.multipleServicePointsForInterface(serviceInterface, servicePoints)); |
|
161 |
|
|
162 | 132 |
ServicePoint sp = (ServicePoint) servicePoints.get(0); |
163 |
|
|
164 | 132 |
return sp.getService(serviceInterface);
|
165 |
} |
|
166 |
|
|
167 | 528 |
public ConfigurationPoint getConfigurationPoint(String configurationId)
|
168 |
{ |
|
169 | 528 |
checkShutdown(); |
170 |
|
|
171 | 527 |
ConfigurationPoint result = (ConfigurationPoint) _configurationPoints.get(configurationId); |
172 |
|
|
173 | 527 |
if (result == null) |
174 | 1 |
throw new ApplicationRuntimeException( |
175 |
ImplMessages.noSuchConfiguration(configurationId)); |
|
176 |
|
|
177 | 526 |
return result;
|
178 |
} |
|
179 |
|
|
180 | 527 |
public List getConfiguration(String configurationId)
|
181 |
{ |
|
182 | 527 |
ConfigurationPoint point = getConfigurationPoint(configurationId); |
183 |
|
|
184 | 525 |
return point.getElements();
|
185 |
} |
|
186 |
|
|
187 | 4 |
public String toString()
|
188 |
{ |
|
189 | 4 |
ToStringBuilder builder = new ToStringBuilder(this); |
190 |
|
|
191 | 4 |
builder.append("locale", _locale);
|
192 |
|
|
193 | 4 |
return builder.toString();
|
194 |
} |
|
195 |
|
|
196 |
private static final int STATE_START = 0; |
|
197 |
private static final int STATE_DOLLAR = 1; |
|
198 |
private static final int STATE_COLLECT_SYMBOL_NAME = 2; |
|
199 |
|
|
200 |
/**
|
|
201 |
*
|
|
202 |
* Note: a little cut-n-paste from {@link org.apache.tapestry.script.AbstractTokenRule}.
|
|
203 |
*/
|
|
204 | 4915 |
public String expandSymbols(String text, Location location)
|
205 |
{ |
|
206 | 4915 |
StringBuffer result = new StringBuffer(text.length());
|
207 | 4915 |
char[] buffer = text.toCharArray();
|
208 | 4915 |
int state = STATE_START;
|
209 | 4915 |
int blockStart = 0;
|
210 | 4915 |
int blockLength = 0;
|
211 | 4915 |
int symbolStart = -1;
|
212 | 4915 |
int symbolLength = 0;
|
213 | 4915 |
int i = 0;
|
214 | 4915 |
int braceDepth = 0;
|
215 | 4915 |
boolean anySymbols = false; |
216 |
|
|
217 | 4915 |
while (i < buffer.length)
|
218 |
{ |
|
219 | 127910 |
char ch = buffer[i];
|
220 |
|
|
221 | 127910 |
switch (state)
|
222 |
{ |
|
223 |
case STATE_START :
|
|
224 |
|
|
225 | 127877 |
if (ch == '$')
|
226 |
{ |
|
227 | 5 |
state = STATE_DOLLAR; |
228 | 5 |
i++; |
229 | 5 |
continue;
|
230 |
} |
|
231 |
|
|
232 | 127872 |
blockLength++; |
233 | 127872 |
i++; |
234 | 127872 |
continue;
|
235 |
|
|
236 |
case STATE_DOLLAR :
|
|
237 |
|
|
238 | 5 |
if (ch == '{')
|
239 |
{ |
|
240 | 5 |
state = STATE_COLLECT_SYMBOL_NAME; |
241 | 5 |
i++; |
242 |
|
|
243 | 5 |
symbolStart = i; |
244 | 5 |
symbolLength = 0; |
245 | 5 |
braceDepth = 1; |
246 |
|
|
247 | 5 |
continue;
|
248 |
} |
|
249 |
|
|
250 |
// The '$' was just what it was, not the start of a ${} expression
|
|
251 |
// block, so include it as part of the static text block.
|
|
252 |
|
|
253 | 0 |
blockLength++; |
254 |
|
|
255 | 0 |
state = STATE_START; |
256 | 0 |
continue;
|
257 |
|
|
258 |
case STATE_COLLECT_SYMBOL_NAME :
|
|
259 |
|
|
260 | 28 |
if (ch != '}')
|
261 |
{ |
|
262 | 23 |
if (ch == '{')
|
263 | 0 |
braceDepth++; |
264 |
|
|
265 | 23 |
i++; |
266 | 23 |
symbolLength++; |
267 | 23 |
continue;
|
268 |
} |
|
269 |
|
|
270 | 5 |
braceDepth--; |
271 |
|
|
272 | 5 |
if (braceDepth > 0)
|
273 |
{ |
|
274 | 0 |
i++; |
275 | 0 |
symbolLength++; |
276 | 0 |
continue;
|
277 |
} |
|
278 |
|
|
279 |
// Hit the closing brace of a symbol.
|
|
280 |
|
|
281 |
// Degenerate case: the string "${}".
|
|
282 |
|
|
283 | 5 |
if (symbolLength == 0)
|
284 | 0 |
blockLength += 3; |
285 |
|
|
286 |
// Append anything up to the start of the sequence (this is static
|
|
287 |
// text between symbol references).
|
|
288 |
|
|
289 | 5 |
if (blockLength > 0)
|
290 | 1 |
result.append(buffer, blockStart, blockLength); |
291 |
|
|
292 | 5 |
if (symbolLength > 0)
|
293 |
{ |
|
294 | 5 |
String variableName = |
295 |
text.substring(symbolStart, symbolStart + symbolLength); |
|
296 |
|
|
297 | 5 |
result.append(expandSymbol(variableName, location)); |
298 |
|
|
299 | 5 |
anySymbols = true;
|
300 |
} |
|
301 |
|
|
302 | 5 |
i++; |
303 | 5 |
blockStart = i; |
304 | 5 |
blockLength = 0; |
305 |
|
|
306 |
// And drop into state start
|
|
307 |
|
|
308 | 5 |
state = STATE_START; |
309 |
|
|
310 | 5 |
continue;
|
311 |
} |
|
312 |
|
|
313 |
} |
|
314 |
|
|
315 |
// If get this far without seeing any variables, then just pass
|
|
316 |
// the input back.
|
|
317 |
|
|
318 | 4915 |
if (!anySymbols)
|
319 | 4910 |
return text;
|
320 |
|
|
321 |
// OK, to handle the end. Couple of degenerate cases where
|
|
322 |
// a ${...} was incomplete, so we adust the block length.
|
|
323 |
|
|
324 | 5 |
if (state == STATE_DOLLAR)
|
325 | 0 |
blockLength++; |
326 |
|
|
327 | 5 |
if (state == STATE_COLLECT_SYMBOL_NAME)
|
328 | 0 |
blockLength += symbolLength + 2; |
329 |
|
|
330 | 5 |
if (blockLength > 0)
|
331 | 1 |
result.append(buffer, blockStart, blockLength); |
332 |
|
|
333 | 5 |
return result.toString();
|
334 |
} |
|
335 |
|
|
336 | 5 |
private String expandSymbol(String name, Location location)
|
337 |
{ |
|
338 | 5 |
String value = valueForSymbol(name); |
339 |
|
|
340 | 5 |
if (value != null) |
341 | 4 |
return value;
|
342 |
|
|
343 | 1 |
_errorHandler.error(LOG, ImplMessages.noSuchSymbol(name), location, null);
|
344 |
|
|
345 | 1 |
return "${" + name + "}"; |
346 |
} |
|
347 |
|
|
348 | 5 |
public String valueForSymbol(String name)
|
349 |
{ |
|
350 | 5 |
checkShutdown(); |
351 |
|
|
352 | 5 |
SymbolSource[] sources = getSymbolSources(); |
353 |
|
|
354 | 5 |
for (int i = 0; i < sources.length; i++) |
355 |
{ |
|
356 | 7 |
String value = sources[i].valueForSymbol(name); |
357 |
|
|
358 | 7 |
if (value != null) |
359 | 4 |
return value;
|
360 |
} |
|
361 |
|
|
362 | 1 |
return null; |
363 |
} |
|
364 |
|
|
365 | 5 |
private synchronized SymbolSource[] getSymbolSources() |
366 |
{ |
|
367 | 5 |
if (_variableSources != null) |
368 | 2 |
return _variableSources;
|
369 |
|
|
370 | 3 |
List contributions = getConfiguration(SYMBOL_SOURCES); |
371 |
|
|
372 | 3 |
Orderer o = |
373 |
new Orderer(
|
|
374 |
LogFactory.getLog(SYMBOL_SOURCES), |
|
375 |
_errorHandler, |
|
376 |
ImplMessages.symbolSourceContribution()); |
|
377 |
|
|
378 | 3 |
Iterator i = contributions.iterator(); |
379 | 3 |
while (i.hasNext())
|
380 |
{ |
|
381 | 8 |
SymbolSourceContribution c = (SymbolSourceContribution) i.next(); |
382 |
|
|
383 | 8 |
o.add(c, c.getName(), c.getPrecedingNames(), c.getFollowingNames()); |
384 |
} |
|
385 |
|
|
386 | 3 |
List sources = o.getOrderedObjects(); |
387 |
|
|
388 | 3 |
int count = sources.size();
|
389 |
|
|
390 | 3 |
_variableSources = new SymbolSource[count];
|
391 |
|
|
392 | 3 |
for (int j = 0; j < count; j++) |
393 |
{ |
|
394 | 8 |
SymbolSourceContribution c = (SymbolSourceContribution) sources.get(j); |
395 | 8 |
_variableSources[j] = c.getSource(); |
396 |
} |
|
397 |
|
|
398 | 3 |
return _variableSources;
|
399 |
} |
|
400 |
|
|
401 | 96 |
public void setShutdownCoordinator(ShutdownCoordinator coordinator) |
402 |
{ |
|
403 | 96 |
_shutdownCoordinator = coordinator; |
404 |
} |
|
405 |
|
|
406 |
/**
|
|
407 |
* Invokes {@link ShutdownCoordinator#shutdown()}, then releases
|
|
408 |
* the coordinator, modules and variable sources.
|
|
409 |
*/
|
|
410 | 19 |
public synchronized void shutdown() |
411 |
{ |
|
412 | 19 |
checkShutdown(); |
413 |
// Allow service implementations and such to shutdown.
|
|
414 |
|
|
415 | 18 |
ShutdownCoordinator coordinatorService = |
416 |
(ShutdownCoordinator) getService("hivemind.ShutdownCoordinator",
|
|
417 |
ShutdownCoordinator.class);
|
|
418 |
|
|
419 | 18 |
coordinatorService.shutdown(); |
420 |
|
|
421 | 18 |
_shutdown = true;
|
422 |
|
|
423 |
// Shutdown infrastructure items, such as proxies.
|
|
424 |
|
|
425 | 18 |
_shutdownCoordinator.shutdown(); |
426 |
|
|
427 | 18 |
_servicePoints = null;
|
428 | 18 |
_servicePointsByInterface = null;
|
429 | 18 |
_configurationPoints = null;
|
430 | 18 |
_shutdownCoordinator = null;
|
431 | 18 |
_variableSources = null;
|
432 | 18 |
_serviceModelFactories = null;
|
433 | 18 |
_threadEventNotifier = null;
|
434 |
} |
|
435 |
|
|
436 | 3088 |
private synchronized void checkShutdown() |
437 |
{ |
|
438 | 3088 |
if (_shutdown)
|
439 | 2 |
throw new ApplicationRuntimeException(HiveMindMessages.registryShutdown()); |
440 |
} |
|
441 |
|
|
442 | 2459 |
private void checkStarted() |
443 |
{ |
|
444 | 2459 |
if (_started)
|
445 | 0 |
throw new IllegalStateException(ImplMessages.registryAlreadyStarted()); |
446 |
} |
|
447 |
|
|
448 |
/**
|
|
449 |
* Starts up the Registry after all service and configuration points have been defined.
|
|
450 |
* This locks down the Registry so that no further extension points may be added.
|
|
451 |
* This method may only be invoked once.
|
|
452 |
*
|
|
453 |
* <p>
|
|
454 |
* In addition, the service <code>hivemind.Startup</code> is obtained and
|
|
455 |
* <code>run()</code> is invoked on it. This allows additional startup, provided
|
|
456 |
* in the <code>hivemind.Startup</code> configuration point, to be executed.
|
|
457 |
*/
|
|
458 | 96 |
public void startup() |
459 |
{ |
|
460 | 96 |
checkStarted(); |
461 |
|
|
462 | 96 |
_started = true;
|
463 |
|
|
464 | 96 |
Runnable startup = (Runnable) getService("hivemind.Startup", Runnable.class); |
465 |
|
|
466 | 96 |
startup.run(); |
467 |
} |
|
468 |
|
|
469 | 981 |
public synchronized ServiceModelFactory getServiceModelFactory(String name) |
470 |
{ |
|
471 | 981 |
if (_serviceModelFactories == null) |
472 | 96 |
readServiceModelFactories(); |
473 |
|
|
474 | 981 |
ServiceModelFactory result = (ServiceModelFactory) _serviceModelFactories.get(name); |
475 |
|
|
476 | 981 |
if (result == null) |
477 | 0 |
throw new ApplicationRuntimeException(ImplMessages.unknownServiceModel(name)); |
478 |
|
|
479 | 981 |
return result;
|
480 |
} |
|
481 |
|
|
482 | 96 |
private void readServiceModelFactories() |
483 |
{ |
|
484 | 96 |
List l = getConfiguration("hivemind.ServiceModels");
|
485 |
|
|
486 | 96 |
_serviceModelFactories = new HashMap();
|
487 |
|
|
488 | 96 |
Iterator i = l.iterator(); |
489 |
|
|
490 | 96 |
while (i.hasNext())
|
491 |
{ |
|
492 | 384 |
ServiceModelContribution smc = (ServiceModelContribution) i.next(); |
493 |
|
|
494 | 384 |
String name = smc.getName(); |
495 |
|
|
496 | 384 |
ServiceModelFactory old = (ServiceModelFactory) _serviceModelFactories.get(name); |
497 |
|
|
498 | 384 |
if (old != null) |
499 |
{ |
|
500 | 0 |
_errorHandler.error( |
501 |
LOG, |
|
502 |
ImplMessages.dupeServiceModelName(name, HiveMind.getLocation(old)), |
|
503 |
HiveMind.getLocation(smc), |
|
504 |
null);
|
|
505 |
|
|
506 | 0 |
continue;
|
507 |
} |
|
508 |
|
|
509 | 384 |
_serviceModelFactories.put(name, smc.getFactory()); |
510 |
} |
|
511 |
} |
|
512 |
|
|
513 | 802 |
public synchronized void cleanupThread() |
514 |
{ |
|
515 | 802 |
if (_threadEventNotifier == null) |
516 | 6 |
_threadEventNotifier = |
517 |
(ThreadEventNotifier) getService("hivemind.ThreadEventNotifier",
|
|
518 |
ThreadEventNotifier.class);
|
|
519 |
|
|
520 | 802 |
_threadEventNotifier.fireThreadCleanup(); |
521 |
} |
|
522 |
|
|
523 | 2 |
public boolean containsConfiguration(String configurationId) |
524 |
{ |
|
525 | 2 |
checkShutdown(); |
526 |
|
|
527 | 2 |
return _configurationPoints.containsKey(configurationId);
|
528 |
} |
|
529 |
|
|
530 | 2 |
public boolean containsService(Class serviceInterface) |
531 |
{ |
|
532 | 2 |
checkShutdown(); |
533 |
|
|
534 | 2 |
List servicePoints = (List) _servicePointsByInterface.get(serviceInterface); |
535 |
|
|
536 | 2 |
return size(servicePoints) == 1;
|
537 |
} |
|
538 |
|
|
539 | 3 |
public boolean containsService(String serviceId, Class serviceInterface) |
540 |
{ |
|
541 | 3 |
checkShutdown(); |
542 |
|
|
543 | 3 |
ServicePoint point = (ServicePoint) _servicePoints.get(serviceId); |
544 |
|
|
545 | 3 |
if (point == null) |
546 | 1 |
return false; |
547 |
|
|
548 | 2 |
return point.getServiceInterface().equals(serviceInterface);
|
549 |
} |
|
550 |
|
|
551 | 0 |
public void setLocale(Locale locale) |
552 |
{ |
|
553 | 0 |
_locale = locale; |
554 |
} |
|
555 |
|
|
556 | 936 |
public ErrorHandler getErrorHander()
|
557 |
{ |
|
558 | 936 |
return _errorHandler;
|
559 |
} |
|
560 |
|
|
561 | 5375 |
public Translator getTranslator(String translator)
|
562 |
{ |
|
563 | 5375 |
return _translatorManager.getTranslator(translator);
|
564 |
} |
|
565 |
|
|
566 | 2 |
private int size(Collection c) |
567 |
{ |
|
568 | 2 |
return c == null ? 0 : c.size(); |
569 |
} |
|
570 |
|
|
571 |
} |
|
572 |
|
|