|
0
|
1 // MODIFIED FOR THE MSGPACK PROJECT
|
|
|
2 // Licensed to the Apache Software Foundation (ASF) under one or more
|
|
|
3 // contributor license agreements. See the NOTICE file distributed with
|
|
|
4 // this work for additional information regarding copyright ownership.
|
|
|
5 // The ASF licenses this file to You under the Apache License, Version 2.0
|
|
|
6 // (the "License"); you may not use this file except in compliance with
|
|
|
7 // the License. You may obtain a copy of the License at
|
|
|
8 //
|
|
|
9 // http://www.apache.org/licenses/LICENSE-2.0
|
|
|
10 //
|
|
|
11 // Unless required by applicable law or agreed to in writing, software
|
|
|
12 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
|
13 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
|
14 // License for the specific language governing permissions and limitations under
|
|
|
15 // the License.
|
|
|
16 //
|
|
|
17
|
|
|
18 package org.msgpack.template.builder.beans;
|
|
|
19
|
|
|
20 import java.lang.reflect.Method;
|
|
|
21 import java.util.ArrayList;
|
|
|
22 import java.util.TooManyListenersException;
|
|
|
23 import org.apache.harmony.beans.internal.nls.Messages;
|
|
|
24
|
|
|
25 public class EventSetDescriptor extends FeatureDescriptor {
|
|
|
26 private Class<?> listenerType;
|
|
|
27
|
|
|
28 private ArrayList<MethodDescriptor> listenerMethodDescriptors;
|
|
|
29
|
|
|
30 private Method[] listenerMethods;
|
|
|
31
|
|
|
32 private Method getListenerMethod;
|
|
|
33
|
|
|
34 private Method addListenerMethod;
|
|
|
35
|
|
|
36 private Method removeListenerMethod;
|
|
|
37
|
|
|
38 private boolean unicast;
|
|
|
39
|
|
|
40 private boolean inDefaultEventSet = true;
|
|
|
41
|
|
|
42 public EventSetDescriptor(Class<?> sourceClass, String eventSetName,
|
|
|
43 Class<?> listenerType, String listenerMethodName)
|
|
|
44 throws IntrospectionException {
|
|
|
45 checkNotNull(sourceClass, eventSetName, listenerType,
|
|
|
46 listenerMethodName);
|
|
|
47 setName(eventSetName);
|
|
|
48 this.listenerType = listenerType;
|
|
|
49
|
|
|
50 Method method = findListenerMethodByName(listenerMethodName);
|
|
|
51 checkEventType(eventSetName, method);
|
|
|
52 listenerMethodDescriptors = new ArrayList<MethodDescriptor>();
|
|
|
53 listenerMethodDescriptors.add(new MethodDescriptor(method));
|
|
|
54 addListenerMethod = findMethodByPrefix(sourceClass, "add", ""); //$NON-NLS-1$ //$NON-NLS-2$
|
|
|
55 removeListenerMethod = findMethodByPrefix(sourceClass, "remove", ""); //$NON-NLS-1$ //$NON-NLS-2$
|
|
|
56
|
|
|
57 if (addListenerMethod == null || removeListenerMethod == null) {
|
|
|
58 throw new IntrospectionException(Messages.getString("custom.beans.38")); //$NON-NLS-1$
|
|
|
59 }
|
|
|
60
|
|
|
61 getListenerMethod = findMethodByPrefix(sourceClass, "get", "s"); //$NON-NLS-1$ //$NON-NLS-2$
|
|
|
62 unicast = isUnicastByDefault(addListenerMethod);
|
|
|
63 }
|
|
|
64
|
|
|
65 public EventSetDescriptor(Class<?> sourceClass, String eventSetName,
|
|
|
66 Class<?> listenerType, String[] listenerMethodNames,
|
|
|
67 String addListenerMethodName, String removeListenerMethodName)
|
|
|
68 throws IntrospectionException {
|
|
|
69 this(sourceClass, eventSetName, listenerType, listenerMethodNames,
|
|
|
70 addListenerMethodName, removeListenerMethodName, null);
|
|
|
71
|
|
|
72 }
|
|
|
73
|
|
|
74 public EventSetDescriptor(Class<?> sourceClass, String eventSetName,
|
|
|
75 Class<?> listenerType, String[] listenerMethodNames,
|
|
|
76 String addListenerMethodName, String removeListenerMethodName,
|
|
|
77 String getListenerMethodName) throws IntrospectionException {
|
|
|
78
|
|
|
79 checkNotNull(sourceClass, eventSetName, listenerType,
|
|
|
80 listenerMethodNames);
|
|
|
81
|
|
|
82 setName(eventSetName);
|
|
|
83 this.listenerType = listenerType;
|
|
|
84
|
|
|
85 listenerMethodDescriptors = new ArrayList<MethodDescriptor>();
|
|
|
86 for (String element : listenerMethodNames) {
|
|
|
87 Method m = findListenerMethodByName(element);
|
|
|
88
|
|
|
89 // checkEventType(eventSetName, m);
|
|
|
90 listenerMethodDescriptors.add(new MethodDescriptor(m));
|
|
|
91 }
|
|
|
92
|
|
|
93 if (addListenerMethodName != null) {
|
|
|
94 this.addListenerMethod = findAddRemoveListenerMethod(sourceClass,
|
|
|
95 addListenerMethodName);
|
|
|
96 }
|
|
|
97 if (removeListenerMethodName != null) {
|
|
|
98 this.removeListenerMethod = findAddRemoveListenerMethod(
|
|
|
99 sourceClass, removeListenerMethodName);
|
|
|
100 }
|
|
|
101 if (getListenerMethodName != null) {
|
|
|
102 this.getListenerMethod = findGetListenerMethod(sourceClass,
|
|
|
103 getListenerMethodName);
|
|
|
104 }
|
|
|
105 this.unicast = isUnicastByDefault(addListenerMethod);
|
|
|
106 }
|
|
|
107
|
|
|
108 private Method findListenerMethodByName(String listenerMethodName)
|
|
|
109 throws IntrospectionException {
|
|
|
110 Method result = null;
|
|
|
111 Method[] methods = listenerType.getMethods();
|
|
|
112 for (Method method : methods) {
|
|
|
113 if (listenerMethodName.equals(method.getName())) {
|
|
|
114 Class<?>[] paramTypes = method.getParameterTypes();
|
|
|
115 if (paramTypes.length == 1
|
|
|
116 && paramTypes[0].getName().endsWith("Event")) { //$NON-NLS-1$
|
|
|
117 result = method;
|
|
|
118 break;
|
|
|
119 }
|
|
|
120
|
|
|
121 }
|
|
|
122 }
|
|
|
123 if (null == result) {
|
|
|
124 throw new IntrospectionException(Messages.getString("custom.beans.31", //$NON-NLS-1$
|
|
|
125 listenerMethodName, listenerType.getName()));
|
|
|
126 }
|
|
|
127 return result;
|
|
|
128 }
|
|
|
129
|
|
|
130 public EventSetDescriptor(String eventSetName, Class<?> listenerType,
|
|
|
131 Method[] listenerMethods, Method addListenerMethod,
|
|
|
132 Method removeListenerMethod) throws IntrospectionException {
|
|
|
133
|
|
|
134 this(eventSetName, listenerType, listenerMethods, addListenerMethod,
|
|
|
135 removeListenerMethod, null);
|
|
|
136 }
|
|
|
137
|
|
|
138 public EventSetDescriptor(String eventSetName, Class<?> listenerType,
|
|
|
139 Method[] listenerMethods, Method addListenerMethod,
|
|
|
140 Method removeListenerMethod, Method getListenerMethod)
|
|
|
141 throws IntrospectionException {
|
|
|
142
|
|
|
143 setName(eventSetName);
|
|
|
144 this.listenerType = listenerType;
|
|
|
145
|
|
|
146 this.listenerMethods = listenerMethods;
|
|
|
147 if (listenerMethods != null) {
|
|
|
148 listenerMethodDescriptors = new ArrayList<MethodDescriptor>();
|
|
|
149
|
|
|
150 for (Method element : listenerMethods) {
|
|
|
151 // XXX do we need this check?
|
|
|
152 // checkEventType(eventSetName, element);
|
|
|
153 // if (checkMethod(listenerType, element)) {
|
|
|
154 this.listenerMethodDescriptors
|
|
|
155 .add(new MethodDescriptor(element));
|
|
|
156 // }
|
|
|
157 }
|
|
|
158 }
|
|
|
159
|
|
|
160 this.addListenerMethod = addListenerMethod;
|
|
|
161 this.removeListenerMethod = removeListenerMethod;
|
|
|
162 this.getListenerMethod = getListenerMethod;
|
|
|
163 this.unicast = isUnicastByDefault(addListenerMethod);
|
|
|
164 }
|
|
|
165
|
|
|
166 public EventSetDescriptor(String eventSetName, Class<?> listenerType,
|
|
|
167 MethodDescriptor[] listenerMethodDescriptors,
|
|
|
168 Method addListenerMethod, Method removeListenerMethod)
|
|
|
169 throws IntrospectionException {
|
|
|
170
|
|
|
171 this(eventSetName, listenerType, null, addListenerMethod,
|
|
|
172 removeListenerMethod, null);
|
|
|
173
|
|
|
174 if (listenerMethodDescriptors != null) {
|
|
|
175 this.listenerMethodDescriptors = new ArrayList<MethodDescriptor>();
|
|
|
176
|
|
|
177 for (MethodDescriptor element : listenerMethodDescriptors) {
|
|
|
178 this.listenerMethodDescriptors.add(element);
|
|
|
179 }
|
|
|
180 }
|
|
|
181 }
|
|
|
182
|
|
|
183 // ensures that there is no nulls
|
|
|
184 @SuppressWarnings("nls")
|
|
|
185 private void checkNotNull(Object sourceClass, Object eventSetName,
|
|
|
186 Object alistenerType, Object listenerMethodName) {
|
|
|
187 if (sourceClass == null) {
|
|
|
188 throw new NullPointerException(Messages.getString("custom.beans.0C"));
|
|
|
189 }
|
|
|
190 if (eventSetName == null) {
|
|
|
191 throw new NullPointerException(Messages.getString("custom.beans.53"));
|
|
|
192 }
|
|
|
193 if (alistenerType == null) {
|
|
|
194 throw new NullPointerException(Messages.getString("custom.beans.54"));
|
|
|
195 }
|
|
|
196 if (listenerMethodName == null) {
|
|
|
197 throw new NullPointerException(Messages.getString("custom.beans.52"));
|
|
|
198 }
|
|
|
199 }
|
|
|
200
|
|
|
201 /**
|
|
|
202 * Checks that given listener method has an argument of the valid type.
|
|
|
203 *
|
|
|
204 * @param eventSetName
|
|
|
205 * event set name
|
|
|
206 * @param listenerMethod
|
|
|
207 * listener method
|
|
|
208 * @throws IntrospectionException
|
|
|
209 * if check fails
|
|
|
210 */
|
|
|
211 private static void checkEventType(String eventSetName,
|
|
|
212 Method listenerMethod) throws IntrospectionException {
|
|
|
213 Class<?>[] params = listenerMethod.getParameterTypes();
|
|
|
214 String firstParamTypeName = null;
|
|
|
215 String eventTypeName = prepareEventTypeName(eventSetName);
|
|
|
216
|
|
|
217 if (params.length > 0) {
|
|
|
218 firstParamTypeName = extractShortClassName(params[0]
|
|
|
219 .getName());
|
|
|
220 }
|
|
|
221
|
|
|
222 if (firstParamTypeName == null
|
|
|
223 || !firstParamTypeName.equals(eventTypeName)) {
|
|
|
224 throw new IntrospectionException(Messages.getString("custom.beans.51", //$NON-NLS-1$
|
|
|
225 listenerMethod.getName(), eventTypeName));
|
|
|
226 }
|
|
|
227 }
|
|
|
228
|
|
|
229 /**
|
|
|
230 * @param fullClassName full name of the class
|
|
|
231 * @return name with package and encapsulating class info omitted
|
|
|
232 */
|
|
|
233 private static String extractShortClassName(String fullClassName) {
|
|
|
234 int k = fullClassName.lastIndexOf('$');
|
|
|
235 k = (k == -1 ? fullClassName.lastIndexOf('.') : k);
|
|
|
236 return fullClassName.substring(k + 1);
|
|
|
237 }
|
|
|
238
|
|
|
239 private static String prepareEventTypeName(String eventSetName) {
|
|
|
240 StringBuilder sb = new StringBuilder();
|
|
|
241
|
|
|
242 if (eventSetName != null && eventSetName.length() > 0) {
|
|
|
243 sb.append(Character.toUpperCase(eventSetName.charAt(0)));
|
|
|
244
|
|
|
245 if (eventSetName.length() > 1) {
|
|
|
246 sb.append(eventSetName.substring(1));
|
|
|
247 }
|
|
|
248 }
|
|
|
249
|
|
|
250 sb.append("Event"); //$NON-NLS-1$
|
|
|
251 return sb.toString();
|
|
|
252 }
|
|
|
253
|
|
|
254 public Method[] getListenerMethods() {
|
|
|
255 if (listenerMethods != null) {
|
|
|
256 return listenerMethods;
|
|
|
257 }
|
|
|
258
|
|
|
259 if (listenerMethodDescriptors != null) {
|
|
|
260 listenerMethods = new Method[listenerMethodDescriptors.size()];
|
|
|
261 int index = 0;
|
|
|
262 for (MethodDescriptor md : listenerMethodDescriptors) {
|
|
|
263 listenerMethods[index++] = md.getMethod();
|
|
|
264 }
|
|
|
265 return listenerMethods;
|
|
|
266 }
|
|
|
267 return null;
|
|
|
268 }
|
|
|
269
|
|
|
270 public MethodDescriptor[] getListenerMethodDescriptors() {
|
|
|
271 return listenerMethodDescriptors == null ? null
|
|
|
272 : listenerMethodDescriptors.toArray(new MethodDescriptor[0]);
|
|
|
273 }
|
|
|
274
|
|
|
275 public Method getRemoveListenerMethod() {
|
|
|
276 return removeListenerMethod;
|
|
|
277 }
|
|
|
278
|
|
|
279 public Method getGetListenerMethod() {
|
|
|
280 return getListenerMethod;
|
|
|
281 }
|
|
|
282
|
|
|
283 public Method getAddListenerMethod() {
|
|
|
284 return addListenerMethod;
|
|
|
285 }
|
|
|
286
|
|
|
287 public Class<?> getListenerType() {
|
|
|
288 return listenerType;
|
|
|
289 }
|
|
|
290
|
|
|
291 public void setUnicast(boolean unicast) {
|
|
|
292 this.unicast = unicast;
|
|
|
293 }
|
|
|
294
|
|
|
295 public void setInDefaultEventSet(boolean inDefaultEventSet) {
|
|
|
296 this.inDefaultEventSet = inDefaultEventSet;
|
|
|
297 }
|
|
|
298
|
|
|
299 public boolean isUnicast() {
|
|
|
300 return unicast;
|
|
|
301 }
|
|
|
302
|
|
|
303 public boolean isInDefaultEventSet() {
|
|
|
304 return inDefaultEventSet;
|
|
|
305 }
|
|
|
306
|
|
|
307 /**
|
|
|
308 * Searches for {add|remove}Listener methods in the event source. Parameter
|
|
|
309 * check is also performed.
|
|
|
310 *
|
|
|
311 * @param sourceClass
|
|
|
312 * event source class
|
|
|
313 * @param methodName
|
|
|
314 * method name to search
|
|
|
315 * @return found method
|
|
|
316 * @throws IntrospectionException
|
|
|
317 * if no valid method found
|
|
|
318 */
|
|
|
319 private Method findAddRemoveListenerMethod(Class<?> sourceClass,
|
|
|
320 String methodName) throws IntrospectionException {
|
|
|
321 try {
|
|
|
322 return sourceClass.getMethod(methodName, listenerType);
|
|
|
323 } catch (NoSuchMethodException e) {
|
|
|
324 return findAddRemoveListnerMethodWithLessCheck(sourceClass,
|
|
|
325 methodName);
|
|
|
326 } catch (Exception e) {
|
|
|
327 throw new IntrospectionException(Messages.getString("custom.beans.31", //$NON-NLS-1$
|
|
|
328 methodName, listenerType.getName()));
|
|
|
329 }
|
|
|
330 }
|
|
|
331
|
|
|
332 private Method findAddRemoveListnerMethodWithLessCheck(
|
|
|
333 Class<?> sourceClass, String methodName)
|
|
|
334 throws IntrospectionException {
|
|
|
335 Method[] methods = sourceClass.getMethods();
|
|
|
336 Method result = null;
|
|
|
337 for (Method method : methods) {
|
|
|
338 if (method.getName().equals(methodName)) {
|
|
|
339 Class<?>[] paramTypes = method.getParameterTypes();
|
|
|
340 if (paramTypes.length == 1) {
|
|
|
341 result = method;
|
|
|
342 break;
|
|
|
343 }
|
|
|
344 }
|
|
|
345 }
|
|
|
346 if (null == result) {
|
|
|
347 throw new IntrospectionException(Messages.getString("custom.beans.31", //$NON-NLS-1$
|
|
|
348 methodName, listenerType.getName()));
|
|
|
349 }
|
|
|
350 return result;
|
|
|
351 }
|
|
|
352
|
|
|
353 /**
|
|
|
354 * @param sourceClass
|
|
|
355 * class of event source
|
|
|
356 * @param methodName
|
|
|
357 * name of the custom getListeners() method
|
|
|
358 * @return found Method object for custom getListener or null if nothing is
|
|
|
359 * found
|
|
|
360 */
|
|
|
361 private Method findGetListenerMethod(Class<?> sourceClass, String methodName) {
|
|
|
362 try {
|
|
|
363 return sourceClass.getMethod(methodName);
|
|
|
364 } catch (Exception e) {
|
|
|
365 // RI keeps silence here and just returns null
|
|
|
366 return null;
|
|
|
367 }
|
|
|
368 }
|
|
|
369
|
|
|
370 private Method findMethodByPrefix(Class<?> sourceClass, String prefix,
|
|
|
371 String postfix) {
|
|
|
372 String shortName = listenerType.getName();
|
|
|
373 if (listenerType.getPackage() != null) {
|
|
|
374 shortName = shortName.substring(listenerType.getPackage().getName()
|
|
|
375 .length() + 1);
|
|
|
376 }
|
|
|
377 String methodName = prefix + shortName + postfix;
|
|
|
378 try {
|
|
|
379 if ("get".equals(prefix)) { //$NON-NLS-1$
|
|
|
380 return sourceClass.getMethod(methodName);
|
|
|
381 }
|
|
|
382 } catch (NoSuchMethodException nsme) {
|
|
|
383 return null;
|
|
|
384 }
|
|
|
385 Method[] methods = sourceClass.getMethods();
|
|
|
386 for (int i = 0; i < methods.length; i++) {
|
|
|
387 if (methods[i].getName().equals(methodName)) {
|
|
|
388 Class<?>[] paramTypes = methods[i].getParameterTypes();
|
|
|
389 if (paramTypes.length == 1) {
|
|
|
390 return methods[i];
|
|
|
391 }
|
|
|
392 }
|
|
|
393 }
|
|
|
394 return null;
|
|
|
395 }
|
|
|
396
|
|
|
397 private static boolean isUnicastByDefault(Method addMethod) {
|
|
|
398 if (addMethod != null) {
|
|
|
399 Class<?>[] exceptionTypes = addMethod.getExceptionTypes();
|
|
|
400 for (Class<?> element : exceptionTypes) {
|
|
|
401 if (element.equals(TooManyListenersException.class)) {
|
|
|
402 return true;
|
|
|
403 }
|
|
|
404 }
|
|
|
405 }
|
|
|
406 return false;
|
|
|
407 }
|
|
|
408
|
|
|
409 void merge(EventSetDescriptor event) {
|
|
|
410 super.merge(event);
|
|
|
411 if (addListenerMethod == null) {
|
|
|
412 addListenerMethod = event.addListenerMethod;
|
|
|
413 }
|
|
|
414 if (getListenerMethod == null) {
|
|
|
415 getListenerMethod = event.getListenerMethod;
|
|
|
416 }
|
|
|
417 if (listenerMethodDescriptors == null) {
|
|
|
418 listenerMethodDescriptors = event.listenerMethodDescriptors;
|
|
|
419 }
|
|
|
420 if (listenerMethods == null) {
|
|
|
421 listenerMethods = event.listenerMethods;
|
|
|
422 }
|
|
|
423 if (listenerType == null) {
|
|
|
424 listenerType = event.listenerType;
|
|
|
425 }
|
|
|
426
|
|
|
427 if (removeListenerMethod == null) {
|
|
|
428 removeListenerMethod = event.removeListenerMethod;
|
|
|
429 }
|
|
|
430 inDefaultEventSet &= event.inDefaultEventSet;
|
|
|
431 }
|
|
|
432 }
|
