001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.gbean;
018
019 import java.beans.Introspector;
020 import java.lang.reflect.Constructor;
021 import java.lang.reflect.Method;
022 import java.util.Collection;
023 import java.util.HashMap;
024 import java.util.HashSet;
025 import java.util.Iterator;
026 import java.util.List;
027 import java.util.Map;
028 import java.util.Set;
029 import java.util.Arrays;
030
031 import org.apache.geronimo.kernel.ClassLoading;
032 import org.apache.geronimo.kernel.Kernel;
033
034 /**
035 * @version $Rev: 558235 $ $Date: 2007-07-20 23:47:45 -0400 (Fri, 20 Jul 2007) $
036 */
037 public class GBeanInfoBuilder {
038 public static GBeanInfoBuilder createStatic(Class gbeanType) {
039 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
040 return createStatic(gbeanType, gbeanType.getName(), gbeanType, null, null);
041 }
042
043 public static GBeanInfoBuilder createStatic(Class gbeanType, String j2eeType) {
044 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
045 return createStatic(gbeanType, gbeanType.getName(), gbeanType, null, j2eeType);
046 }
047
048 public static GBeanInfoBuilder createStatic(String name, Class gbeanType) {
049 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
050 return createStatic(gbeanType, name, gbeanType, null, null);
051 }
052
053 public static GBeanInfoBuilder createStatic(String name, Class gbeanType, String j2eeType) {
054 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
055 return createStatic(gbeanType, name, gbeanType, null, j2eeType);
056 }
057
058 public static GBeanInfoBuilder createStatic(Class gbeanType, GBeanInfo source) {
059 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
060 return createStatic(gbeanType, gbeanType.getName(), gbeanType, source, null);
061 }
062
063 public static GBeanInfoBuilder createStatic(Class gbeanType, GBeanInfo source, String j2eeType) {
064 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
065 return createStatic(gbeanType, gbeanType.getName(), gbeanType, source, j2eeType);
066 }
067
068 public static GBeanInfoBuilder createStatic(String name, Class gbeanType, GBeanInfo source) {
069 if (name == null) throw new NullPointerException("name is null");
070 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
071 return createStatic(gbeanType, name, gbeanType, source, null);
072 }
073
074 //
075 // These methods are used by classes that declare a GBeanInfo for another class
076 //
077 public static GBeanInfoBuilder createStatic(Class sourceClass, Class gbeanType) {
078 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
079 return createStatic(sourceClass, gbeanType.getName(), gbeanType, null, null);
080 }
081
082 public static GBeanInfoBuilder createStatic(Class sourceClass, Class gbeanType, String j2eeType) {
083 if (sourceClass == null) throw new NullPointerException("sourceClass is null");
084 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
085 return createStatic(sourceClass, gbeanType.getName(), gbeanType, null, j2eeType);
086 }
087
088 public static GBeanInfoBuilder createStatic(Class sourceClass, Class gbeanType, GBeanInfo source, String j2eeType) {
089 if (sourceClass == null) throw new NullPointerException("sourceClass is null");
090 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
091 return createStatic(sourceClass, gbeanType.getName(), gbeanType, source, j2eeType);
092 }
093
094 public static GBeanInfoBuilder createStatic(Class sourceClass, String name, Class gbeanType, String j2eeType) {
095 if (sourceClass == null) throw new NullPointerException("sourceClass is null");
096 if (name == null) throw new NullPointerException("name is null");
097 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
098 return createStatic(sourceClass, name, gbeanType, null, j2eeType);
099 }
100
101 public static GBeanInfoBuilder createStatic(Class sourceClass, String name, Class gbeanType, GBeanInfo source, String j2eeType) {
102 if (sourceClass == null) throw new NullPointerException("sourceClass is null");
103 if (name == null) throw new NullPointerException("name is null");
104 if (gbeanType == null) throw new NullPointerException("gbeanType is null");
105 return new GBeanInfoBuilder(sourceClass.getName(), name, gbeanType, source, j2eeType);
106 }
107
108 public static final String DEFAULT_J2EE_TYPE = "GBean"; //NameFactory.GERONIMO_SERVICE
109
110 private static final Class[] NO_ARGS = {};
111
112 /**
113 * The class from which the info can be retrieved using GBeanInfo.getGBeanInfo(className, classLoader)
114 */
115 private final String sourceClass;
116
117 private final String name;
118
119 private final String j2eeType;
120
121 private final Class gbeanType;
122
123 private final Map attributes = new HashMap();
124
125 private GConstructorInfo constructor = new GConstructorInfo();
126
127 private final Map operations = new HashMap();
128
129 private final Map references = new HashMap();
130
131 private final Set interfaces = new HashSet();
132
133 private int priority = GBeanInfo.PRIORITY_NORMAL;
134
135 public GBeanInfoBuilder(Class gbeanType) {
136 this(checkNotNull(gbeanType).getName(), gbeanType, null, null);
137 }
138
139 public GBeanInfoBuilder(Class gbeanType, String j2eeType) {
140 this(checkNotNull(gbeanType).getName(), gbeanType, null, j2eeType);
141 }
142
143 public GBeanInfoBuilder(String name, Class gbeanType) {
144 this(name, checkNotNull(gbeanType), null, null);
145 }
146
147 public GBeanInfoBuilder(String name, Class gbeanType, String j2eeType) {
148 this(name, checkNotNull(gbeanType), null, j2eeType);
149 }
150
151 public GBeanInfoBuilder(Class gbeanType, GBeanInfo source) {
152 this(checkNotNull(gbeanType).getName(), gbeanType, source);
153 }
154
155 public GBeanInfoBuilder(Class gbeanType, GBeanInfo source, String j2eeType) {
156 this(checkNotNull(gbeanType).getName(), gbeanType, source, j2eeType);
157 }
158
159 //TODO remove this
160 /**
161 * @deprecated This will be removed in a future release
162 */
163 public GBeanInfoBuilder(String name, ClassLoader classLoader) {
164 this(checkNotNull(name), loadClass(classLoader, name), GBeanInfo.getGBeanInfo(name, classLoader));
165 }
166
167 public GBeanInfoBuilder(String name, Class gbeanType, GBeanInfo source) {
168 this(name, gbeanType, source, null);
169 }
170
171 public GBeanInfoBuilder(String name, Class gbeanType, GBeanInfo source, String j2eeType) {
172 this(null, name, gbeanType, source, j2eeType);
173 }
174
175 private GBeanInfoBuilder(String sourceClass, String name, Class gbeanType, GBeanInfo source, String j2eeType) {
176 checkNotNull(name);
177 checkNotNull(gbeanType);
178 this.name = name;
179 this.gbeanType = gbeanType;
180 this.sourceClass = sourceClass;
181
182 if (source != null) {
183 for (Iterator i = source.getAttributes().iterator(); i.hasNext();) {
184 GAttributeInfo attributeInfo = (GAttributeInfo) i.next();
185 attributes.put(attributeInfo.getName(), attributeInfo);
186 }
187
188 for (Iterator i = source.getOperations().iterator(); i.hasNext();) {
189 GOperationInfo operationInfo = (GOperationInfo) i.next();
190 operations.put(new GOperationSignature(operationInfo.getName(), operationInfo.getParameterList()), operationInfo);
191 }
192
193 for (Iterator iterator = source.getReferences().iterator(); iterator.hasNext();) {
194 GReferenceInfo referenceInfo = (GReferenceInfo) iterator.next();
195 references.put(referenceInfo.getName(), new RefInfo(referenceInfo.getReferenceType(), referenceInfo.getNameTypeName()));
196 }
197
198 for (Iterator iterator = source.getInterfaces().iterator(); iterator.hasNext();) {
199 String intf = (String) iterator.next();
200 interfaces.add(intf);
201 }
202
203 //in case subclass constructor has same parameters as superclass.
204 constructor = source.getConstructor();
205
206 priority = source.getPriority();
207 }
208 if (j2eeType != null) {
209 this.j2eeType = j2eeType;
210 } else if (source != null) {
211 this.j2eeType = source.getJ2eeType();
212 } else {
213 this.j2eeType = DEFAULT_J2EE_TYPE; //NameFactory.GERONIMO_SERVICE
214 }
215
216 // add all interfaces based on GBean type
217 if (gbeanType.isArray()) {
218 throw new IllegalArgumentException("GBean is an array type: gbeanType=" + gbeanType.getName());
219 }
220 Set allTypes = ClassLoading.getAllTypes(gbeanType);
221 for (Iterator iterator = allTypes.iterator(); iterator.hasNext();) {
222 Class type = (Class) iterator.next();
223 addInterface(type);
224 }
225 }
226
227 public void setPersistentAttributes(String[] persistentAttributes) {
228 for (int i = 0; i < persistentAttributes.length; i++) {
229 String attributeName = persistentAttributes[i];
230 GAttributeInfo attribute = (GAttributeInfo) attributes.get(attributeName);
231 if (attribute != null && !references.containsKey(attributeName)) {
232 if (isMagicAttribute(attribute)) {
233 // magic attributes can't be persistent
234 continue;
235 }
236 attributes.put(attributeName,
237 new GAttributeInfo(attributeName,
238 attribute.getType(),
239 true,
240 attribute.isManageable(),
241 attribute.getGetterName(),
242 attribute.getSetterName()));
243 } else {
244 if (attributeName.equals("kernel")) {
245 addAttribute("kernel", Kernel.class, false);
246 } else if (attributeName.equals("classLoader")) {
247 addAttribute("classLoader", ClassLoader.class, false);
248 } else if (attributeName.equals("abstractName")) {
249 addAttribute("abstractName", AbstractName.class, false);
250 } else if (attributeName.equals("objectName")) {
251 addAttribute("obectName", String.class, false);
252 }
253 }
254 }
255 }
256
257 public void setManageableAttributes(String[] manageableAttributes) {
258 for (int i = 0; i < manageableAttributes.length; i++) {
259 String attributeName = manageableAttributes[i];
260 GAttributeInfo attribute = (GAttributeInfo) attributes.get(attributeName);
261 if (attribute != null) {
262 attributes.put(attributeName,
263 new GAttributeInfo(attributeName,
264 attribute.getType(),
265 attribute.isPersistent(),
266 true,
267 attribute.getGetterName(),
268 attribute.getSetterName()));
269 }
270 }
271 }
272
273 private boolean isMagicAttribute(GAttributeInfo attributeInfo) {
274 String name = attributeInfo.getName();
275 String type = attributeInfo.getType();
276 return ("kernel".equals(name) && Kernel.class.getName().equals(type)) ||
277 ("classLoader".equals(name) && ClassLoader.class.getName().equals(type)) ||
278 ("abstractName".equals(name) && AbstractName.class.getName().equals(type)) ||
279 ("objectName".equals(name) && String.class.getName().equals(type));
280 }
281
282 public void addInterface(Class intf) {
283 addInterface(intf, new String[0]);
284 }
285
286 //do not use beaninfo Introspector to list the properties. This method is primarily for interfaces,
287 //and it does not process superinterfaces. It seems to really only work well for classes.
288 public void addInterface(Class intf, String[] persistentAttributes) {
289 addInterface(intf, persistentAttributes, new String[0]);
290 }
291
292 public void addInterface(Class intf, String[] persistentAttributes, String[] manageableAttributes) {
293 Set persistentNames = new HashSet(Arrays.asList(persistentAttributes));
294 Set manageableNames = new HashSet(Arrays.asList(manageableAttributes));
295 Method[] methods = intf.getMethods();
296 for (int i = 0; i < methods.length; i++) {
297 Method method = methods[i];
298 if ("java.lang.Object".equals(method.getDeclaringClass().getName())) continue;
299 if (isGetter(method)) {
300 String attributeName = getAttributeName(method);
301 GAttributeInfo attribute = (GAttributeInfo) attributes.get(attributeName);
302 String attributeType = method.getReturnType().getName();
303 if (attribute == null) {
304 attributes.put(attributeName,
305 new GAttributeInfo(attributeName,
306 attributeType,
307 persistentNames.contains(attributeName),
308 manageableNames.contains(attributeName),
309 method.getName(),
310 null));
311 } else {
312 if (!attributeType.equals(attribute.getType())) {
313 throw new IllegalArgumentException("Getter and setter type do not match: " + attributeName + " for gbeanType: " + gbeanType.getName());
314 }
315 attributes.put(attributeName,
316 new GAttributeInfo(attributeName,
317 attributeType,
318 attribute.isPersistent() || persistentNames.contains(attributeName),
319 attribute.isManageable() || manageableNames.contains(attributeName),
320 method.getName(),
321 attribute.getSetterName()));
322 }
323 } else if (isSetter(method)) {
324 String attributeName = getAttributeName(method);
325 String attributeType = method.getParameterTypes()[0].getName();
326 GAttributeInfo attribute = (GAttributeInfo) attributes.get(attributeName);
327 if (attribute == null) {
328 attributes.put(attributeName,
329 new GAttributeInfo(attributeName,
330 attributeType,
331 persistentNames.contains(attributeName),
332 manageableNames.contains(attributeName),
333 null,
334 method.getName()));
335 } else {
336 if (!attributeType.equals(attribute.getType())) {
337 throw new IllegalArgumentException("Getter and setter type do not match: " + attributeName + " for gbeanType: " + gbeanType.getName());
338 }
339 attributes.put(attributeName,
340 new GAttributeInfo(attributeName,
341 attributeType,
342 attribute.isPersistent() || persistentNames.contains(attributeName),
343 attribute.isManageable() || manageableNames.contains(attributeName),
344 attribute.getGetterName(),
345 method.getName()));
346 }
347 } else {
348 addOperation(new GOperationInfo(method.getName(), method.getParameterTypes(), method.getReturnType().getName()));
349 }
350 }
351 addInterface(interfaces, intf);
352 }
353
354 private static void addInterface(Set set, Class intf) {
355 String name = intf.getName();
356 if(set.contains(name)) {
357 return;
358 }
359 set.add(name);
360 Class cls[] = intf.getInterfaces();
361 for (int i = 0; i < cls.length; i++) {
362 addInterface(set, cls[i]);
363 }
364 }
365
366 public void addAttribute(String name, Class type, boolean persistent) {
367 addAttribute(name, type.getName(), persistent, true);
368 }
369
370 public void addAttribute(String name, String type, boolean persistent) {
371 addAttribute(name, type, persistent, true);
372 }
373
374 public void addAttribute(String name, Class type, boolean persistent, boolean manageable) {
375 addAttribute(name, type.getName(), persistent, manageable);
376 }
377
378 public void addAttribute(String name, String type, boolean persistent, boolean manageable) {
379 String getter = searchForGetter(name, type, gbeanType);
380 String setter = searchForSetter(name, type, gbeanType);
381 addAttribute(new GAttributeInfo(name, type, persistent, manageable, getter, setter));
382 }
383
384 public void addAttribute(GAttributeInfo info) {
385 attributes.put(info.getName(), info);
386 }
387
388 public void setConstructor(GConstructorInfo constructor) {
389 assert constructor != null;
390 this.constructor = constructor;
391 List names = constructor.getAttributeNames();
392 setPersistentAttributes((String[]) names.toArray(new String[names.size()]));
393 }
394
395 public void setConstructor(String[] names) {
396 constructor = new GConstructorInfo(names);
397 setPersistentAttributes(names);
398 }
399
400 public void addOperation(GOperationInfo operationInfo) {
401 operations.put(new GOperationSignature(operationInfo.getName(), operationInfo.getParameterList()), operationInfo);
402 }
403
404 /**
405 * @deprecated
406 */
407 public void addOperation(String name) {
408 // FIXME : This is needed because the getters/setters are not being added as operation
409 // i.e. kerenl.invoke("getX") fails.
410 addOperation(new GOperationInfo(name, NO_ARGS, ""));
411 }
412
413 /**
414 * @deprecated
415 */
416 public void addOperation(String name, Class[] paramTypes) {
417 //addOperation(new GOperationInfo(name, paramTypes, ""));
418 }
419
420 public void addOperation(String name, String returnType) {
421 addOperation(new GOperationInfo(name, NO_ARGS, returnType));
422 }
423
424 // This is redundant because these operations are added automatically; it can be made private
425 public void addOperation(String name, Class[] paramTypes, String returnType) {
426 addOperation(new GOperationInfo(name, paramTypes, returnType));
427 }
428
429 public void addReference(GReferenceInfo info) {
430 references.put(info.getName(), new RefInfo(info.getReferenceType(), info.getNameTypeName()));
431 }
432
433 /**
434 * Add a reference to another GBean or collection of GBeans
435 * @param name the name of the reference
436 * @param type The proxy type of the GBean or objects in a ReferenceCollection
437 * @param namingType the string expected as the type component of the name. For jsr-77 names this is the j2eeType value
438 */
439 public void addReference(String name, Class type, String namingType) {
440 references.put(name, new RefInfo(type.getName(), namingType));
441 }
442
443 public void addReference(String name, Class type) {
444 references.put(name, new RefInfo(type.getName(), null));
445 }
446
447 public void setPriority(int priority) {
448 this.priority = priority;
449 }
450
451 public GBeanInfo getBeanInfo() {
452 // get the types of the constructor args
453 // this also verifies that we have a valid constructor
454 Map constructorTypes = getConstructorTypes();
455
456 // build the reference infos now that we know the constructor types
457 Set referenceInfos = new HashSet();
458 for (Iterator iterator = references.entrySet().iterator(); iterator.hasNext();) {
459 Map.Entry entry = (Map.Entry) iterator.next();
460 String referenceName = (String) entry.getKey();
461 RefInfo refInfo = (RefInfo) entry.getValue();
462 String referenceType = refInfo.getJavaType();
463 String namingType = refInfo.getNamingType();
464
465 String proxyType = (String) constructorTypes.get(referenceName);
466 String setterName = null;
467 if (proxyType == null) {
468 Method setter = searchForSetterMethod(referenceName, referenceType, gbeanType);
469 if (setter == null) {
470 setter = searchForSetterMethod(referenceName, Collection.class.getName(), gbeanType);
471 if (setter == null) {
472 throw new InvalidConfigurationException("Reference must be a constructor argument or have a setter: name=" + referenceName + " for gbeanType: " + gbeanType);
473 }
474 }
475 proxyType = setter.getParameterTypes()[0].getName();
476
477 setterName = setter.getName();
478 }
479
480 if (!proxyType.equals(Collection.class.getName()) && !proxyType.equals(referenceType)) {
481 throw new InvalidConfigurationException("Reference proxy type must be Collection or " + referenceType + ": name=" + referenceName + " for gbeanType: " + gbeanType.getName());
482 }
483
484 referenceInfos.add(new GReferenceInfo(referenceName, referenceType, proxyType, setterName, namingType));
485 }
486
487 return new GBeanInfo(sourceClass, name, gbeanType.getName(), j2eeType, attributes.values(), constructor, operations.values(), referenceInfos, interfaces, priority);
488 }
489
490 private Map getConstructorTypes() throws InvalidConfigurationException {
491 List arguments = constructor.getAttributeNames();
492 String[] argumentTypes = new String[arguments.size()];
493 boolean[] isReference = new boolean[arguments.size()];
494 for (int i = 0; i < argumentTypes.length; i++) {
495 String argumentName = (String) arguments.get(i);
496 if (references.containsKey(argumentName)) {
497 argumentTypes[i] = ((RefInfo) references.get(argumentName)).getJavaType();
498 isReference[i] = true;
499 } else if (attributes.containsKey(argumentName)) {
500 GAttributeInfo attribute = (GAttributeInfo) attributes.get(argumentName);
501 argumentTypes[i] = attribute.getType();
502 isReference[i] = false;
503 }
504 }
505
506 Constructor[] constructors = gbeanType.getConstructors();
507 Set validConstructors = new HashSet();
508 for (int i = 0; i < constructors.length; i++) {
509 Constructor constructor = constructors[i];
510 if (isValidConstructor(constructor, argumentTypes, isReference)) {
511 validConstructors.add(constructor);
512 }
513 }
514
515 if (validConstructors.isEmpty()) {
516 throw new InvalidConfigurationException("Could not find a valid constructor for GBean: " + gbeanType.getName());
517 }
518 if (validConstructors.size() > 1) {
519 throw new InvalidConfigurationException("More then one valid constructors found for GBean: " + gbeanType.getName());
520 }
521
522 Map constructorTypes = new HashMap();
523 Constructor constructor = (Constructor) validConstructors.iterator().next();
524 Class[] parameterTypes = constructor.getParameterTypes();
525 Iterator argumentIterator = arguments.iterator();
526 for (int i = 0; i < parameterTypes.length; i++) {
527 String parameterType = parameterTypes[i].getName();
528 String argumentName = (String) argumentIterator.next();
529 constructorTypes.put(argumentName, parameterType);
530 }
531 return constructorTypes;
532 }
533
534 private static String searchForGetter(String name, String type, Class gbeanType) throws InvalidConfigurationException {
535 Method getterMethod = null;
536
537 // no explicit name give so we must search for a name
538 String getterName = "get" + name;
539 String isName = "is" + name;
540 Method[] methods = gbeanType.getMethods();
541 for (int i = 0; i < methods.length; i++) {
542 if (methods[i].getParameterTypes().length == 0 && methods[i].getReturnType() != Void.TYPE
543 && (getterName.equalsIgnoreCase(methods[i].getName()) || isName.equalsIgnoreCase(methods[i].getName()))) {
544
545 // found it
546 getterMethod = methods[i];
547 break;
548 }
549 }
550
551 // if the return type of the getter doesn't match, throw an exception
552 if (getterMethod != null && !type.equals(getterMethod.getReturnType().getName())) {
553 throw new InvalidConfigurationException("Incorrect return type for getter method:" +
554 " name=" + name +
555 ", targetClass=" + gbeanType.getName() +
556 ", getter type=" + getterMethod.getReturnType() +
557 ", expected type=" + type);
558 }
559
560 if (getterMethod == null) {
561 return null;
562 }
563 return getterMethod.getName();
564 }
565
566 private static String searchForSetter(String name, String type, Class gbeanType) throws InvalidConfigurationException {
567 Method method = searchForSetterMethod(name, type, gbeanType);
568 if (method == null) {
569 return null;
570 }
571 return method.getName();
572 }
573
574 private static Method searchForSetterMethod(String name, String type, Class gbeanType) throws InvalidConfigurationException {
575 // no explicit name give so we must search for a name
576 String setterName = "set" + name;
577 Method[] methods = gbeanType.getMethods();
578 for (int i = 0; i < methods.length; i++) {
579 Method method = methods[i];
580 if (method.getParameterTypes().length == 1 &&
581 method.getParameterTypes()[0].getName().equals(type) &&
582 method.getReturnType() == Void.TYPE &&
583 setterName.equalsIgnoreCase(method.getName())) {
584
585 return method;
586 }
587 }
588
589 // a setter is not necessary for this attribute
590 return null;
591 }
592
593 private static boolean isValidConstructor(Constructor constructor, String[] argumentTypes, boolean[] isReference) {
594 Class[] parameterTypes = constructor.getParameterTypes();
595
596 // same number of parameters?
597 if (parameterTypes.length != argumentTypes.length) {
598 return false;
599 }
600
601 // is each parameter the correct type?
602 for (int i = 0; i < parameterTypes.length; i++) {
603 String parameterType = parameterTypes[i].getName();
604 if (isReference[i]) {
605 // reference: does type match
606 // OR is it a java.util.Collection
607 // OR is it a java.util.Set?
608 if (!parameterType.equals(argumentTypes[i]) &&
609 !parameterType.equals(Collection.class.getName()) &&
610 !parameterType.equals(Set.class.getName())) {
611 return false;
612 }
613 } else {
614 // attribute: does type match?
615 if (!parameterType.equals(argumentTypes[i])) {
616 return false;
617 }
618 }
619 }
620 return true;
621 }
622
623 private String getAttributeName(Method method) {
624 String name = method.getName();
625 String attributeName = (name.startsWith("get") || name.startsWith("set")) ? name.substring(3) : name.substring(2);
626 attributeName = Introspector.decapitalize(attributeName);
627 return attributeName;
628 }
629
630 private boolean isSetter(Method method) {
631 return method.getName().startsWith("set") && method.getParameterTypes().length == 1;
632 }
633
634 private static boolean isGetter(Method method) {
635 String name = method.getName();
636 return (name.startsWith("get") || name.startsWith("is")) && method.getParameterTypes().length == 0;
637 }
638
639 /**
640 * Checks whether or not the input argument is null; otherwise it throws
641 * {@link IllegalArgumentException}.
642 *
643 * @param clazz the input argument to validate
644 * @throws IllegalArgumentException if input is null
645 */
646 private static Class checkNotNull(final Class clazz) {
647 if (clazz == null) {
648 throw new IllegalArgumentException("null argument supplied");
649 }
650 return clazz;
651 }
652
653 /**
654 * Checks whether or not the input argument is null; otherwise it throws
655 * {@link IllegalArgumentException}.
656 *
657 * @param string the input argument to validate
658 * @throws IllegalArgumentException if input is null
659 */
660 private static String checkNotNull(final String string) {
661 if (string == null) {
662 throw new IllegalArgumentException("null argument supplied");
663 }
664 return string;
665 }
666
667 private static Class loadClass(ClassLoader classLoader, String name) {
668 try {
669 return classLoader.loadClass(name);
670 } catch (ClassNotFoundException e) {
671 throw new InvalidConfigurationException("Could not load class " + name, e);
672 }
673 }
674
675 private static class RefInfo {
676 private final String javaType;
677 private final String namingType;
678
679 public RefInfo(String javaType, String namingType) {
680 this.javaType = javaType;
681 this.namingType = namingType;
682 }
683
684 public String getJavaType() {
685 return javaType;
686 }
687
688 public String getNamingType() {
689 return namingType;
690 }
691 }
692 }