Examples of org.kohsuke.asm3.MethodVisitor

org.apache.xbean.asm4.MethodVisitor

        if (cmrField.isSynthetic()) {
            return;
        }


        String methodName = getterName(cmrField.getName());
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, methodName, "()" + cmrField.getProxyDescriptor(), null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName() + "Cmr", cmrField.getAccessorDescriptor());
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
        
        // return this.${cmrField.name}Cmr.get(this.${cmdField.name});  
        // this takes the value stored in the CMR field (which might be a single value or 
        // a Set or Collection), and hands it to the appropriate accessor. 
        mv.visitMethodInsn(INVOKEVIRTUAL, cmrField.getAccessorInternalName(), "get", cmrField.getCmrStyle().getGetterDescriptor());
        // if the style is a single value, then we're going to need to cast this 
        // to the target class before returning.  
        if (cmrField.getCmrStyle() == CmrStyle.SINGLE) {
            mv.visitTypeInsn(CHECKCAST, cmrField.getProxyType().getInternalName());
        }
        mv.visitInsn(ARETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

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        if (cmrField.isSynthetic()) {
            return;
        }


        String methodName = setterName(cmrField.getName());
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, methodName, "(" + cmrField.getProxyDescriptor() + ")V", null, null);
        mv.visitCode();
        // if this is a Many relationship, the CMR field contains a Set value.  The accessor 
        // will process the elements in the Set, removing any existing ones, and then populating 
        // the Set with the new values from the new value source. 
        if (cmrField.getCmrStyle() != CmrStyle.SINGLE) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName() + "Cmr", cmrField.getAccessorDescriptor());
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKEVIRTUAL, cmrField.getAccessorInternalName(), "set", cmrField.getCmrStyle().getSetterDescriptor());
            mv.visitInsn(RETURN);
        } else {
            // this is a single value.  We pass the existing value and the old value to 
            // the accessor, then must cast the accessor return value to the target type 
            // so we can store it in the real CMR field. 
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName() + "Cmr", cmrField.getAccessorDescriptor());
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKEVIRTUAL, cmrField.getAccessorInternalName(), "set", cmrField.getCmrStyle().getSetterDescriptor());
            mv.visitTypeInsn(CHECKCAST, cmrField.getType().getInternalName());
            mv.visitFieldInsn(PUTFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
            mv.visitInsn(RETURN);
        }
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

View Full Code Here

            return false;
        }
    }


    private void createConstructor() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, beanClassName, "<init>", "()V");


        for (CmrField cmrField : cmrFields) {
            initCmrFields(mv, cmrField);
        }


        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

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        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }


    private void createOpenEJB_isDeleted() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "OpenEJB_isDeleted", "()Z", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, implClassName, DELETED, "Z");
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

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        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }


    private void createOpenEJB_deleted() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "OpenEJB_deleted", "()V", null, null);
        mv.visitCode();


        /* if (deleted) return; */
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, implClassName, DELETED, "Z");
        Label notDeleted = new Label();
        mv.visitJumpInsn(IFEQ, notDeleted);
        mv.visitInsn(RETURN);
        mv.visitLabel(notDeleted);


        // deleted = true;
        mv.visitVarInsn(ALOAD, 0);
        mv.visitInsn(ICONST_1);
        mv.visitFieldInsn(PUTFIELD, implClassName, DELETED, "Z");


        for (CmrField cmrField : cmrFields) {
            // ${cmrField.accessor}.delete(${cmrField.name});
            createOpenEJB_deleted(mv, cmrField);
        }


        // return;
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

View Full Code Here

        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }


    private void createOpenEJB_addCmr() {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "OpenEJB_addCmr", "(Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;", null, null);
        mv.visitCode();


        // if (deleted) return null;
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, implClassName, DELETED, "Z");
        Label notDeleted = new Label();
        mv.visitJumpInsn(IFEQ, notDeleted);
        mv.visitInsn(ACONST_NULL);
        mv.visitInsn(ARETURN);
        mv.visitLabel(notDeleted);


        for (CmrField cmrField : cmrFields) {
            // if ("${cmrField.name}".equals(name)) {
            //     ${cmrField.name}.add((${cmrField.type})value);
            //     return null;
            // }
            //
            // OR
            //
            // if ("${cmrField.name}".equals(name)) {
            //     Object oldValue = ${cmrField.name};
            //     ${cmrField.name} = (${cmrField.type}) bean;
            //     return oldValue;
            // }
            createOpenEJB_addCmr(mv, cmrField);
        }


        // throw new IllegalArgumentException("Unknown cmr field " + name + " on entity bean of type " + getClass().getName());
        mv.visitTypeInsn(NEW, "java/lang/IllegalArgumentException");
        mv.visitInsn(DUP);
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V");
        mv.visitLdcInsn("Unknown cmr field ");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
        mv.visitLdcInsn(" on entity bean of type ");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/IllegalArgumentException", "<init>", "(Ljava/lang/String;)V");
        mv.visitInsn(ATHROW);


        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

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     * class.  This is just a forwarding constructor that 
     * calls the superclass (the bean implementation class) 
     * default constructor. 
     */
    private void createConstructor() {
        MethodVisitor mv = mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, beanClassName, "<init>", "()V");


        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

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        cw.visitField(ACC_FINAL + ACC_PRIVATE, "this$handler", "Ljava/lang/reflect/InvocationHandler;", null, null).visitEnd();


        for (Constructor<?> constructor : classToProxy.getConstructors()) {
            if (!Modifier.isPublic(constructor.getModifiers())) continue;


            final MethodVisitor mv = visitConstructor(cw, proxyClassFileName, classFileName, constructor);
            visitors.put("<init>" + Type.getConstructorDescriptor(constructor), mv);
        }


        final Map<String, List<Method>> methodMap = new HashMap<String, List<Method>>();


        getNonPrivateMethods(classToProxy, methodMap);


        // Iterate over the public methods
        for (final Map.Entry<String, List<Method>> entry : methodMap.entrySet()) {


            for (final Method method : entry.getValue()) {
                if (Modifier.isAbstract(method.getModifiers())) {
                    final MethodVisitor visitor = LocalBeanProxyFactory.visit(cw, method, proxyClassFileName, "this$handler");
                    visitors.put(method.getName() + Type.getMethodDescriptor(method), visitor);
                }
            }
        }


        copyClassAnnotations(classToProxy, cw);


        copyMethodAnnotations(classToProxy, visitors);


        // This should never be reached, but just in case
        for (MethodVisitor visitor : visitors.values()) {
            visitor.visitEnd();
        }


        return cw.toByteArray();
    }

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        final String[] exceptions = new String[constructor.getExceptionTypes().length];
        for (int i = 0; i < exceptions.length; i++) {
            exceptions[i] = Type.getInternalName(constructor.getExceptionTypes()[i]);
        }


        final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", descriptor, null, exceptions);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        int index = 1;


        for (Type type : Type.getArgumentTypes(descriptor)) {
            mv.visitVarInsn(type.getOpcode(ILOAD), index);
            index += size(type);
        }


        mv.visitMethodInsn(INVOKESPECIAL, classFileName, "<init>", descriptor);


        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(PUTFIELD, proxyClassFileName, "this$handler", "Ljava/lang/reflect/InvocationHandler;");
        mv.visitInsn(RETURN);
        mv.visitMaxs(2, 1);
        return mv;
    }

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            this.visitors = visitors;
        }


        @Override
        public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
            final MethodVisitor newMethod = visitors.remove(name + desc);


            if (newMethod == null) return null;


            final MethodVisitor oldMethod = super.visitMethod(access, name, desc, signature, exceptions);


            return new MoveAnnotationsVisitor(oldMethod, newMethod);
        }

View Full Code Here

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