Source Code Cross Referenced for FieldSetFieldGetVisitor.java in  » Net » Terracotta » com » tc » aspectwerkz » transform » inlining » weaver » 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 » Net » Terracotta » com.tc.aspectwerkz.transform.inlining.weaver 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * All content copyright (c) 2003-2006 Terracotta, Inc., except as may otherwise be noted in a separate copyright notice.  All rights reserved.
003:         */
004:        package com.tc.aspectwerkz.transform.inlining.weaver;
005:
006:        import com.tc.asm.ClassAdapter;
007:        import com.tc.asm.ClassVisitor;
008:        import com.tc.asm.Label;
009:        import com.tc.asm.MethodVisitor;
010:        import com.tc.asm.Type;
011:
012:        import com.tc.aspectwerkz.definition.SystemDefinition;
013:        import com.tc.aspectwerkz.joinpoint.management.JoinPointType;
014:        import com.tc.aspectwerkz.reflect.impl.asm.AsmClassInfo;
015:        import com.tc.aspectwerkz.reflect.ClassInfo;
016:        import com.tc.aspectwerkz.reflect.MemberInfo;
017:        import com.tc.aspectwerkz.reflect.FieldInfo;
018:        import com.tc.aspectwerkz.transform.InstrumentationContext;
019:        import com.tc.aspectwerkz.transform.TransformationConstants;
020:        import com.tc.aspectwerkz.transform.TransformationUtil;
021:        import com.tc.aspectwerkz.transform.inlining.AsmHelper;
022:        import com.tc.aspectwerkz.transform.inlining.EmittedJoinPoint;
023:        import com.tc.aspectwerkz.transform.inlining.compiler.AbstractJoinPointCompiler;
024:        import com.tc.aspectwerkz.expression.ExpressionContext;
025:        import com.tc.aspectwerkz.expression.PointcutType;
026:
027:        import java.lang.reflect.Modifier;
028:        import java.util.Iterator;
029:        import java.util.Set;
030:
031:        /**
032:         * Instruments method SET and GET join points by replacing PUTFIELD and GETFIELD instructions with invocations
033:         * of the compiled join point.
034:         *
035:         * @author <a href="mailto:jboner@codehaus.org">Jonas BonŽr </a>
036:         */
037:        public class FieldSetFieldGetVisitor extends ClassAdapter implements 
038:                TransformationConstants {
039:
040:            private final InstrumentationContext m_ctx;
041:            private final ClassLoader m_loader;
042:            private final ClassInfo m_callerClassInfo;
043:
044:            private Label m_lastLabelForLineNumber = EmittedJoinPoint.NO_LINE_NUMBER;
045:
046:            /**
047:             * Creates a new instance.
048:             *
049:             * @param cv
050:             * @param loader
051:             * @param classInfo
052:             * @param ctx
053:             */
054:            public FieldSetFieldGetVisitor(final ClassVisitor cv,
055:                    final ClassLoader loader, final ClassInfo classInfo,
056:                    final InstrumentationContext ctx) {
057:                super (cv);
058:                m_loader = loader;
059:                m_callerClassInfo = classInfo;
060:                m_ctx = ctx;
061:            }
062:
063:            /**
064:             * Visits the caller methods.
065:             *
066:             * @param access
067:             * @param name
068:             * @param desc
069:             * @param signature
070:             * @param exceptions
071:             * @return visitor
072:             */
073:            public MethodVisitor visitMethod(final int access,
074:                    final String name, final String desc,
075:                    final String signature, final String[] exceptions) {
076:
077:                if (name.startsWith(WRAPPER_METHOD_PREFIX)) {
078:                    return super .visitMethod(access, name, desc, signature,
079:                            exceptions);
080:                }
081:
082:                MethodVisitor mv = cv.visitMethod(access, name, desc,
083:                        signature, exceptions);
084:                return mv == null ? null
085:                        : new ReplacePutFieldAndGetFieldInstructionCodeAdapter(
086:                                mv, m_loader, m_callerClassInfo, m_ctx
087:                                        .getClassName(), name, desc);
088:            }
089:
090:            /**
091:             * Replaces PUTFIELD and GETFIELD instructions with a call to the compiled JoinPoint instance.
092:             *
093:             * @author <a href="mailto:jboner@codehaus.org">Jonas Bonér </a>
094:             * @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur</a>
095:             */
096:            public class ReplacePutFieldAndGetFieldInstructionCodeAdapter
097:                    extends AfterObjectInitializationCodeAdapter {
098:
099:                private final ClassLoader m_loader;
100:                private final String m_callerClassName;
101:                private final String m_callerMethodName;
102:                private final String m_callerMethodDesc;
103:                private final MemberInfo m_callerMemberInfo;
104:
105:                /**
106:                 * Creates a new instance.
107:                 *
108:                 * @param ca
109:                 * @param loader
110:                 * @param callerClassInfo
111:                 * @param callerClassName
112:                 * @param callerMethodName
113:                 * @param callerMethodDesc
114:                 */
115:                public ReplacePutFieldAndGetFieldInstructionCodeAdapter(
116:                        final MethodVisitor ca, final ClassLoader loader,
117:                        final ClassInfo callerClassInfo,
118:                        final String callerClassName,
119:                        final String callerMethodName,
120:                        final String callerMethodDesc) {
121:                    super (ca, callerMethodName);
122:                    m_loader = loader;
123:                    m_callerClassName = callerClassName;
124:                    m_callerMethodName = callerMethodName;
125:                    m_callerMethodDesc = callerMethodDesc;
126:
127:                    if (CLINIT_METHOD_NAME.equals(m_callerMethodName)) {
128:                        m_callerMemberInfo = callerClassInfo
129:                                .staticInitializer();
130:                    } else if (INIT_METHOD_NAME.equals(m_callerMethodName)) {
131:                        int hash = AsmHelper
132:                                .calculateConstructorHash(m_callerMethodDesc);
133:                        m_callerMemberInfo = callerClassInfo
134:                                .getConstructor(hash);
135:                    } else {
136:                        int hash = AsmHelper.calculateMethodHash(
137:                                m_callerMethodName, m_callerMethodDesc);
138:                        m_callerMemberInfo = callerClassInfo.getMethod(hash);
139:                    }
140:                    if (m_callerMemberInfo == null) {
141:                        System.err
142:                                .println("AW::WARNING "
143:                                        + "metadata structure could not be build for method ["
144:                                        + callerClassInfo.getName().replace(
145:                                                '/', '.') + '.'
146:                                        + m_callerMethodName + ':'
147:                                        + m_callerMethodDesc + ']');
148:                    }
149:                }
150:
151:                /**
152:                 * Label
153:                 *
154:                 * @param label
155:                 */
156:                public void visitLabel(Label label) {
157:                    m_lastLabelForLineNumber = label;
158:                    super .visitLabel(label);
159:                }
160:
161:                /**
162:                 * Visits PUTFIELD and GETFIELD instructions.
163:                 *
164:                 * @param opcode
165:                 * @param className
166:                 * @param fieldName
167:                 * @param fieldDesc
168:                 */
169:                public void visitFieldInsn(final int opcode,
170:                        final String className, final String fieldName,
171:                        final String fieldDesc) {
172:
173:                    if (className
174:                            .endsWith(AbstractJoinPointCompiler.JOIN_POINT_CLASS_SUFFIX)
175:                            || fieldName.startsWith(ASPECTWERKZ_PREFIX)
176:                            || fieldName.startsWith(SYNTHETIC_MEMBER_PREFIX) || // synthetic field
177:                            fieldName.equals(SERIAL_VERSION_UID_FIELD_NAME) // can have been added by the weaver (not safe)
178:                    ) {
179:                        super .visitFieldInsn(opcode, className, fieldName,
180:                                fieldDesc);
181:                        return;
182:                    }
183:
184:                    // if within ctor, make sure object initialization has been reached
185:                    if (!m_isObjectInitialized) {
186:                        super .visitFieldInsn(opcode, className, fieldName,
187:                                fieldDesc);
188:                        return;
189:                    }
190:
191:                    final Type fieldType = Type.getType(fieldDesc);
192:                    final int joinPointHash = AsmHelper.calculateFieldHash(
193:                            fieldName, fieldDesc);
194:                    final ClassInfo classInfo = AsmClassInfo.getClassInfo(
195:                            className, m_loader);
196:                    final FieldInfo fieldInfo = getFieldInfo(classInfo,
197:                            className, fieldName, fieldDesc, joinPointHash);
198:
199:                    if (opcode == PUTFIELD || opcode == PUTSTATIC) {
200:                        handleFieldModification(fieldInfo, opcode, className,
201:                                fieldName, fieldDesc, joinPointHash);
202:                    } else if (opcode == GETFIELD || opcode == GETSTATIC) {
203:                        handleFieldAccess(fieldInfo, opcode, className,
204:                                fieldName, fieldDesc, joinPointHash, fieldType);
205:                    } else {
206:                        super .visitFieldInsn(opcode, className, fieldName,
207:                                fieldDesc);
208:                    }
209:                }
210:
211:                /**
212:                 * Handles field access.
213:                 *
214:                 * @param fieldInfo
215:                 * @param opcode
216:                 * @param className
217:                 * @param fieldName
218:                 * @param fieldDesc
219:                 * @param joinPointHash
220:                 * @param fieldType
221:                 */
222:                private void handleFieldAccess(final FieldInfo fieldInfo,
223:                        final int opcode, final String className,
224:                        final String fieldName, final String fieldDesc,
225:                        int joinPointHash, final Type fieldType) {
226:                    if (m_callerMemberInfo == null) {
227:                        super .visitFieldInsn(opcode, className, fieldName,
228:                                fieldDesc);
229:                        return;
230:                    }
231:
232:                    ExpressionContext ctx = new ExpressionContext(
233:                            PointcutType.GET, fieldInfo, m_callerMemberInfo);
234:
235:                    if (fieldFilter(m_ctx.getDefinitions(), ctx, fieldInfo)) {
236:                        super .visitFieldInsn(opcode, className, fieldName,
237:                                fieldDesc);
238:                    } else {
239:                        m_ctx.markAsAdvised();
240:
241:                        String joinPointClassName = TransformationUtil
242:                                .getJoinPointClassName(m_callerClassName,
243:                                        m_callerMethodName, m_callerMethodDesc,
244:                                        className, JoinPointType.FIELD_GET_INT,
245:                                        joinPointHash);
246:
247:                        // no param to field, so pass a default value to the invoke method
248:                        AsmHelper.addDefaultValue(this , fieldType);
249:
250:                        // if static context load NULL else 'this'
251:                        if (Modifier
252:                                .isStatic(m_callerMemberInfo.getModifiers())) {
253:                            visitInsn(ACONST_NULL);
254:                        } else {
255:                            visitVarInsn(ALOAD, 0);
256:                        }
257:
258:                        // add the call to the join point
259:                        super .visitMethodInsn(INVOKESTATIC, joinPointClassName,
260:                                INVOKE_METHOD_NAME, TransformationUtil
261:                                        .getInvokeSignatureForFieldJoinPoints(
262:                                                fieldInfo.getModifiers(),
263:                                                fieldDesc, m_callerClassName,
264:                                                className));
265:
266:                        // emit the joinpoint
267:                        m_ctx.addEmittedJoinPoint(new EmittedJoinPoint(
268:                                JoinPointType.FIELD_GET_INT, m_callerClassName,
269:                                m_callerMethodName, m_callerMethodDesc,
270:                                m_callerMemberInfo.getModifiers(), className,
271:                                fieldName, fieldDesc, fieldInfo.getModifiers(),
272:                                joinPointHash, joinPointClassName,
273:                                m_lastLabelForLineNumber));
274:                    }
275:                }
276:
277:                /**
278:                 * Handles field modification.
279:                 *
280:                 * @param fieldInfo
281:                 * @param opcode
282:                 * @param className
283:                 * @param fieldName
284:                 * @param fieldDesc
285:                 * @param joinPointHash
286:                 */
287:                private void handleFieldModification(final FieldInfo fieldInfo,
288:                        final int opcode, final String className,
289:                        final String fieldName, final String fieldDesc,
290:                        final int joinPointHash) {
291:                    if (m_callerMemberInfo == null) {
292:                        super .visitFieldInsn(opcode, className, fieldName,
293:                                fieldDesc);
294:                        return;
295:                    }
296:
297:                    ExpressionContext ctx = new ExpressionContext(
298:                            PointcutType.SET, fieldInfo, m_callerMemberInfo);
299:
300:                    if (fieldFilter(m_ctx.getDefinitions(), ctx, fieldInfo)) {
301:                        super .visitFieldInsn(opcode, className, fieldName,
302:                                fieldDesc);
303:                    } else {
304:                        m_ctx.markAsAdvised();
305:
306:                        String joinPointClassName = TransformationUtil
307:                                .getJoinPointClassName(m_callerClassName,
308:                                        m_callerMethodName, m_callerMethodDesc,
309:                                        className, JoinPointType.FIELD_SET_INT,
310:                                        joinPointHash);
311:
312:                        // load the caller instance (this), or null if in a static context
313:                        // note that callee instance [optional] and args are already on the stack
314:                        if (Modifier
315:                                .isStatic(m_callerMemberInfo.getModifiers())) {
316:                            visitInsn(ACONST_NULL);
317:                        } else {
318:                            visitVarInsn(ALOAD, 0);
319:                        }
320:
321:                        // add the call to the join point
322:                        super .visitMethodInsn(INVOKESTATIC, joinPointClassName,
323:                                INVOKE_METHOD_NAME, TransformationUtil
324:                                        .getInvokeSignatureForFieldJoinPoints(
325:                                                fieldInfo.getModifiers(),
326:                                                fieldDesc, m_callerClassName,
327:                                                className));
328:
329:                        final int sort = Type.getType(fieldDesc).getSort();
330:                        if (sort != Type.LONG && sort != Type.DOUBLE) {
331:                            super .visitInsn(POP);
332:                        } else {
333:                            //AW-437
334:                            super .visitInsn(POP2);
335:                        }
336:
337:                        // emit the joinpoint
338:                        m_ctx.addEmittedJoinPoint(new EmittedJoinPoint(
339:                                JoinPointType.FIELD_SET_INT, m_callerClassName,
340:                                m_callerMethodName, m_callerMethodDesc,
341:                                m_callerMemberInfo.getModifiers(), className,
342:                                fieldName, fieldDesc, fieldInfo.getModifiers(),
343:                                joinPointHash, joinPointClassName,
344:                                m_lastLabelForLineNumber));
345:                    }
346:                }
347:
348:                /**
349:                 * Returns the field info.
350:                 *
351:                 * @param classInfo
352:                 * @param className
353:                 * @param fieldName
354:                 * @param fieldDesc
355:                 * @param joinPointHash
356:                 * @return the field info
357:                 */
358:                private FieldInfo getFieldInfo(final ClassInfo classInfo,
359:                        final String className, final String fieldName,
360:                        final String fieldDesc, final int joinPointHash) {
361:                    FieldInfo fieldInfo = classInfo.getField(joinPointHash);
362:                    if (fieldInfo == null) {
363:                        throw new RuntimeException(
364:                                "field info metadata structure could not be build for field: "
365:                                        + className + '.' + fieldName + ':'
366:                                        + fieldDesc);
367:                    }
368:                    return fieldInfo;
369:                }
370:
371:                /**
372:                 * Filters out the fields that are not eligible for transformation.
373:                 *
374:                 * @param definitions
375:                 * @param ctx
376:                 * @param fieldInfo
377:                 * @return boolean true if the field should be filtered out
378:                 */
379:                public boolean fieldFilter(final Set definitions,
380:                        final ExpressionContext ctx, final FieldInfo fieldInfo) {
381:                    if (fieldInfo.getName().startsWith(ORIGINAL_METHOD_PREFIX)) {
382:                        return true;
383:                    }
384:                    for (Iterator it = definitions.iterator(); it.hasNext();) {
385:                        if (((SystemDefinition) it.next()).hasPointcut(ctx)) {
386:                            return false;
387:                        } else {
388:                            continue;
389:                        }
390:                    }
391:                    return true;
392:                }
393:            }
394:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.