Source Code Cross Referenced for Constructor.java in  » Apache-Harmony-Java-SE » java-package » java » lang » reflect » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.lang.reflect 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


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:        /**
018:         * @author Evgueni Brevnov, Serguei S. Zapreyev, Alexey V. Varlamov
019:         * @version $Revision: 1.1.2.2.4.4 $
020:         */package java.lang.reflect;
021:
022:        import static org.apache.harmony.vm.ClassFormat.ACC_SYNTHETIC;
023:        import static org.apache.harmony.vm.ClassFormat.ACC_VARARGS;
024:
025:        import java.lang.annotation.Annotation;
026:        import java.util.Arrays;
027:
028:        import org.apache.harmony.lang.reflect.parser.Parser;
029:        import org.apache.harmony.vm.VMGenericsAndAnnotations;
030:        import org.apache.harmony.vm.VMStack;
031:
032:        /**
033:         * @com.intel.drl.spec_ref 
034:         */
035:        public final class Constructor<T> extends AccessibleObject implements 
036:                Member, GenericDeclaration {
037:
038:            /**
039:             *  @com.intel.drl.spec_ref
040:             */
041:            public boolean isVarArgs() {
042:                return (getModifiers() & ACC_VARARGS) != 0;
043:            }
044:
045:            /**
046:             *  @com.intel.drl.spec_ref
047:             */
048:            public Annotation[][] getParameterAnnotations() {
049:                Annotation a[][] = data.getParameterAnnotations();
050:                Annotation aa[][] = new Annotation[a.length][];
051:                for (int i = 0; i < a.length; i++) {
052:                    aa[i] = new Annotation[a[i].length];
053:                    System.arraycopy(a[i], 0, aa[i], 0, a[i].length);
054:                }
055:                return aa;
056:            }
057:
058:            /**
059:             *  @com.intel.drl.spec_ref
060:             */
061:            public Annotation[] getDeclaredAnnotations() {
062:                Annotation a[] = data.getDeclaredAnnotations();
063:                Annotation aa[] = new Annotation[a.length];
064:                System.arraycopy(a, 0, aa, 0, a.length);
065:                return aa;
066:            }
067:
068:            /**
069:             *  @com.intel.drl.spec_ref
070:             */
071:            @SuppressWarnings("unchecked")
072:            public <A extends Annotation> A getAnnotation(
073:                    Class<A> annotationClass) {
074:                if (annotationClass == null) {
075:                    throw new NullPointerException();
076:                }
077:                for (Annotation a : data.getDeclaredAnnotations()) {
078:                    if (a.annotationType() == annotationClass) {
079:                        return (A) a; // warning here, but it's known its type is A
080:                    }
081:                }
082:                return null;
083:            }
084:
085:            /**
086:             *  @com.intel.drl.spec_ref
087:             */
088:            public Type[] getGenericExceptionTypes()
089:                    throws GenericSignatureFormatError,
090:                    TypeNotPresentException,
091:                    MalformedParameterizedTypeException {
092:                if (data.genericExceptionTypes == null) {
093:                    data.genericExceptionTypes = Parser
094:                            .getGenericExceptionTypes(this ,
095:                                    VMGenericsAndAnnotations
096:                                            .getSignature(data.vm_member_id));
097:                }
098:
099:                return (Type[]) data.genericExceptionTypes.clone();
100:            }
101:
102:            /**
103:             *  @com.intel.drl.spec_ref
104:             */
105:            public Type[] getGenericParameterTypes()
106:                    throws GenericSignatureFormatError,
107:                    TypeNotPresentException,
108:                    MalformedParameterizedTypeException {
109:                if (data.genericParameterTypes == null) {
110:                    data.genericParameterTypes = Parser
111:                            .getGenericParameterTypes(this ,
112:                                    VMGenericsAndAnnotations
113:                                            .getSignature(data.vm_member_id));
114:                }
115:
116:                return (Type[]) data.genericParameterTypes.clone();
117:            }
118:
119:            /**
120:             *  @com.intel.drl.spec_ref
121:             */
122:            @SuppressWarnings("unchecked")
123:            public TypeVariable<Constructor<T>>[] getTypeParameters()
124:                    throws GenericSignatureFormatError {
125:                if (data.typeParameters == null) {
126:                    data.typeParameters = (TypeVariable<Constructor<T>>[]) Parser
127:                            .getTypeParameters(this , VMGenericsAndAnnotations
128:                                    .getSignature(data.vm_member_id));
129:                }
130:                return (TypeVariable<Constructor<T>>[]) data.typeParameters
131:                        .clone();
132:            }
133:
134:            /**
135:             * @com.intel.drl.spec_ref 
136:             */
137:            public String toGenericString() {
138:                StringBuilder sb = new StringBuilder(80);
139:                // data initialization
140:                if (data.genericParameterTypes == null) {
141:                    data.genericParameterTypes = Parser
142:                            .getGenericParameterTypes(this ,
143:                                    VMGenericsAndAnnotations
144:                                            .getSignature(data.vm_member_id));
145:                }
146:                if (data.genericExceptionTypes == null) {
147:                    data.genericExceptionTypes = Parser
148:                            .getGenericExceptionTypes(this ,
149:                                    VMGenericsAndAnnotations
150:                                            .getSignature(data.vm_member_id));
151:                }
152:                // append modifiers if any
153:                int modifier = getModifiers();
154:                if (modifier != 0) {
155:                    sb.append(Modifier.toString(modifier & ~ACC_VARARGS))
156:                            .append(' ');
157:                }
158:                // append type parameters
159:                if (data.typeParameters != null
160:                        && data.typeParameters.length > 0) {
161:                    sb.append('<');
162:                    for (int i = 0; i < data.typeParameters.length; i++) {
163:                        appendGenericType(sb, data.typeParameters[i]);
164:                        if (i < data.typeParameters.length - 1) {
165:                            sb.append(", ");
166:                        }
167:                    }
168:                    sb.append("> ");
169:                }
170:                // append constructor name
171:                appendArrayType(sb, getDeclaringClass());
172:                // append parameters
173:                sb.append('(');
174:                appendArrayGenericType(sb, data.genericParameterTypes);
175:                sb.append(')');
176:                // append exeptions if any
177:                if (data.genericExceptionTypes.length > 0) {
178:                    sb.append(" throws ");
179:                    appendArrayGenericType(sb, data.genericExceptionTypes);
180:                }
181:                return sb.toString();
182:            }
183:
184:            /**
185:             * @com.intel.drl.spec_ref 
186:             */
187:            public boolean isSynthetic() {
188:                return (getModifiers() & ACC_SYNTHETIC) != 0;
189:            }
190:
191:            /**
192:             * cache of the constructor data
193:             */
194:            private final ConstructorData data;
195:
196:            /**
197:             * Copy constructor
198:             * 
199:             * @param c original constructor
200:             */
201:            Constructor(Constructor<T> c) {
202:                data = c.data;
203:                isAccessible = c.isAccessible;
204:            }
205:
206:            /**
207:             * Only VM should call this constructor.
208:             * String parameters must be interned.
209:             * @api2vm
210:             */
211:            Constructor(long id, Class<T> clss, String name, String desc, int m) {
212:                data = new ConstructorData(id, clss, name, desc, m);
213:            }
214:
215:            /**
216:             * Called by VM to obtain this constructor's handle.
217:             * 
218:             * @return handle for this constructor
219:             * @api2vm
220:             */
221:            long getId() {
222:                return data.vm_member_id;
223:            }
224:
225:            /**
226:             * @com.intel.drl.spec_ref 
227:             */
228:            public boolean equals(Object obj) {
229:                if (obj instanceof  Constructor) {
230:                    Constructor another = (Constructor) obj;
231:                    if (data.vm_member_id == another.data.vm_member_id) {
232:                        assert getDeclaringClass() == another
233:                                .getDeclaringClass()
234:                                && Arrays.equals(getParameterTypes(), another
235:                                        .getParameterTypes());
236:                        return true;
237:                    }
238:                }
239:                return false;
240:            }
241:
242:            /**
243:             * @com.intel.drl.spec_ref 
244:             */
245:            public Class<T> getDeclaringClass() {
246:                return data.declaringClass;
247:            }
248:
249:            /**
250:             * @com.intel.drl.spec_ref 
251:             */
252:            public Class<?>[] getExceptionTypes() {
253:                return (Class[]) data.getExceptionTypes().clone();
254:            }
255:
256:            /**
257:             * @com.intel.drl.spec_ref 
258:             */
259:            public int getModifiers() {
260:                return data.modifiers;
261:            }
262:
263:            /**
264:             * @com.intel.drl.spec_ref 
265:             */
266:            public String getName() {
267:                return data.getName();
268:            }
269:
270:            /**
271:             * @com.intel.drl.spec_ref 
272:             */
273:            public Class<?>[] getParameterTypes() {
274:                return (Class[]) data.getParameterTypes().clone();
275:            }
276:
277:            /**
278:             * @com.intel.drl.spec_ref 
279:             */
280:            public int hashCode() {
281:                return getDeclaringClass().getName().hashCode();
282:            }
283:
284:            /**
285:             * @com.intel.drl.spec_ref 
286:             */
287:            @SuppressWarnings("unchecked")
288:            public T newInstance(Object... args) throws InstantiationException,
289:                    IllegalAccessException, IllegalArgumentException,
290:                    InvocationTargetException {
291:                if (Modifier.isAbstract(getDeclaringClass().getModifiers())) {
292:                    throw new InstantiationException(
293:                            "Can not instantiate abstract "
294:                                    + getDeclaringClass());
295:                }
296:
297:                // check parameter validity
298:                checkInvokationArguments(data.getParameterTypes(), args);
299:
300:                if (!isAccessible) {
301:                    reflectExporter.checkMemberAccess(
302:                            VMStack.getCallerClass(0), getDeclaringClass(),
303:                            getDeclaringClass(), getModifiers());
304:                }
305:                return (T) VMReflection.newClassInstance(data.vm_member_id,
306:                        args);
307:            }
308:
309:            /**
310:             * @com.intel.drl.spec_ref 
311:             */
312:            public String toString() {
313:                StringBuilder sb = new StringBuilder(80);
314:                // append modifiers if any
315:                int modifier = getModifiers();
316:                if (modifier != 0) {
317:                    // VARARGS incorrectly recognized
318:                    final int MASK = ~ACC_VARARGS;
319:                    sb.append(Modifier.toString(modifier & MASK)).append(' ');
320:                }
321:                // append constructor name
322:                appendArrayType(sb, getDeclaringClass());
323:                // append parameters
324:                sb.append('(');
325:                appendArrayType(sb, data.getParameterTypes());
326:                sb.append(')');
327:                // append exeptions if any
328:                Class[] exn = data.getExceptionTypes();
329:                if (exn.length > 0) {
330:                    sb.append(" throws ");
331:                    appendSimpleType(sb, exn);
332:                }
333:                return sb.toString();
334:            }
335:
336:            /* NON API SECTION */
337:
338:            /**
339:             * This method is used by serialization mechanism.
340:             * 
341:             * @return the signature of the constructor 
342:             */
343:            String getSignature() {
344:                return data.descriptor;
345:            }
346:
347:            /**
348:             * Keeps an information about this constructor
349:             */
350:            private class ConstructorData {
351:
352:                /**
353:                 * constructor handle which is used to retrieve all necessary
354:                 * information about this constructor object
355:                 */
356:                final long vm_member_id;
357:
358:                Annotation[] declaredAnnotations;
359:
360:                final Class<T> declaringClass;
361:
362:                Class<?>[] exceptionTypes;
363:
364:                Type[] genericExceptionTypes;
365:
366:                Type[] genericParameterTypes;
367:
368:                final int modifiers;
369:
370:                String name;
371:
372:                Annotation[][] parameterAnnotations;
373:
374:                Class<?>[] parameterTypes;
375:
376:                TypeVariable<Constructor<T>>[] typeParameters;
377:                final String descriptor;
378:
379:                /**
380:                 * @param obj constructor handler 
381:                 */
382:                public ConstructorData(long vm_id, Class<T> clss, String name,
383:                        String desc, int mods) {
384:                    vm_member_id = vm_id;
385:                    declaringClass = clss;
386:                    this .name = null;
387:                    modifiers = mods;
388:                    descriptor = desc;
389:                }
390:
391:                String getName() {
392:                    if (name == null) {
393:                        name = declaringClass.getName();
394:                    }
395:                    return name;
396:                }
397:
398:                public Annotation[] getDeclaredAnnotations() {
399:                    if (declaredAnnotations == null) {
400:                        declaredAnnotations = VMGenericsAndAnnotations
401:                                .getDeclaredAnnotations(vm_member_id);
402:                    }
403:                    return declaredAnnotations;
404:                }
405:
406:                /**
407:                 * initializes exeptions
408:                 */
409:                public Class[] getExceptionTypes() {
410:                    if (exceptionTypes == null) {
411:                        exceptionTypes = VMReflection
412:                                .getExceptionTypes(vm_member_id);
413:                    }
414:                    return exceptionTypes;
415:                }
416:
417:                public Annotation[][] getParameterAnnotations() {
418:                    if (parameterAnnotations == null) {
419:                        parameterAnnotations = VMGenericsAndAnnotations
420:                                .getParameterAnnotations(vm_member_id);
421:                    }
422:                    return parameterAnnotations;
423:                }
424:
425:                /**
426:                 * initializes parameters
427:                 */
428:                public Class[] getParameterTypes() {
429:                    if (parameterTypes == null) {
430:                        parameterTypes = VMReflection
431:                                .getParameterTypes(vm_member_id);
432:                    }
433:                    return parameterTypes;
434:                }
435:            }
436:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.