Package org.apache.xbean.asm5

Examples of org.apache.xbean.asm5.ClassWriter

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        } catch (SQLException e) {
        }
    }

    public static byte[] addNewField(byte[] origBytes) {
        ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);

        FieldAdderClassVisitor visitor = new FieldAdderClassVisitor(classWriter);

        ClassReader classReader = new ClassReader(origBytes);
        classReader.accept(visitor, 0);

        return classWriter.toByteArray();
    }
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    public static Class createProxy(final Class<?> classToProxy, final ClassLoader cl, final Class... interfaces) {
        return createProxy(classToProxy, cl, classToProxy.getName() + "$$LocalBeanProxy", interfaces);
    }

    public static byte[] generateProxy(final Class<?> classToProxy, final String proxyName, final Class<?>... interfaces) throws ProxyGenerationException {
        final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);

        final String proxyClassFileName = proxyName.replace('.', '/');
        final String classFileName = classToProxy.getName().replace('.', '/');

        // push class signature
        final String[] interfaceNames = new String[interfaces.length];
        for (int i = 0; i < interfaces.length; i++) {
            final Class<?> anInterface = interfaces[i];
            interfaceNames[i] = anInterface.getName().replace('.', '/');
        }

        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, proxyClassFileName, null, classFileName, interfaceNames);
        cw.visitSource(classFileName + ".java", null);

        cw.visitAnnotation("L" + Proxy.class.getName().replace('.', '/') + ";", true).visitEnd();

        // push InvocationHandler fields
        cw.visitField(ACC_FINAL + ACC_PRIVATE, BUSSINESS_HANDLER_NAME, "Ljava/lang/reflect/InvocationHandler;", null, null).visitEnd();
        cw.visitField(ACC_FINAL + ACC_PRIVATE, NON_BUSINESS_HANDLER_NAME, "Ljava/lang/reflect/InvocationHandler;", null, null).visitEnd();

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

        getNonPrivateMethods(classToProxy, methodMap);

        for (final Class<?> anInterface : interfaces) {
            getNonPrivateMethods(anInterface, methodMap);
        }

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

            for (final Method method : entry.getValue()) {
                final String name = method.getName();

                if (Modifier.isPublic(method.getModifiers())
                    || (method.getParameterTypes().length == 0 && ("finalize".equals(name)
                                                                   || "clone".equals(name)))) {
                    // forward invocations of any public methods or
                    // finalize/clone methods to businessHandler
                    processMethod(cw, method, proxyClassFileName, BUSSINESS_HANDLER_NAME);
                } else {
                    // forward invocations of any other methods to nonBusinessHandler
                    processMethod(cw, method, proxyClassFileName, NON_BUSINESS_HANDLER_NAME);
                }
            }
        }

        return cw.toByteArray();
    }
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        String classFilePath = factory.replace('.', '/');

        String sourceFileName = factory.substring(factory.lastIndexOf('.') + 1, factory.length()) + ".java";


        ClassWriter cw = new ClassWriter(0);
        MethodVisitor mv;

        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, classFilePath, null, "org/eclipse/persistence/transaction/JTATransactionController", null);

        cw.visitSource(sourceFileName, null);

        {
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, "org/eclipse/persistence/transaction/JTATransactionController", "<init>", "()V");
            mv.visitInsn(RETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PROTECTED, "acquireTransactionManager", "()Ljavax/transaction/TransactionManager;", null, new String[]{"java/lang/Exception"});
            mv.visitCode();
            mv.visitMethodInsn(INVOKESTATIC, "org/apache/openejb/OpenEJB", "getTransactionManager", "()Ljavax/transaction/TransactionManager;");
            mv.visitInsn(ARETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        cw.visitEnd();


        write(baseDir, cw, classFilePath);
    }
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    private static byte[] toJava7ByteArray(BCClass bc, byte[] classBytes) throws IOException {
        ByteArrayInputStream bais = new ByteArrayInputStream(classBytes);
        BufferedInputStream bis = new BufferedInputStream(bais);

        ClassWriter cw = new BCClassWriter(ClassWriter.COMPUTE_FRAMES, bc.getClassLoader());
        ClassReader cr = new ClassReader(bis);
        cr.accept(cw, 0);
        return cw.toByteArray();
    }
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    private static void file(final File file, final KeysAnnotationVisitor visitor) {
        try {
            final InputStream in = IO.read(file);
            try {
                final ClassReader classReader = new ClassReader(in);
                classReader.accept(visitor, ClassWriter.COMPUTE_FRAMES);
            } finally {
                IO.close(in);
            }
        } catch (final IOException e) {
            e.printStackTrace();
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            final URL resource = classLoader.getResource(className);
            if (resource != null) {
                InputStream in = resource.openStream();
                in = new BufferedInputStream(in);
                try {
                    final ClassReader classReader = new ClassReader(in);
                    classReader.accept(visitor, ASM_FLAGS);
                } finally {
                    in.close();
                }
            } else {
                new Exception("Could not load " + className).printStackTrace();
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            return;
        }

        try {
            final URL u = c.getResource("/" + c.getName().replace('.', '/') + ".class");
            final ClassReader r = new ClassReader(IO.read(u));
            r.accept(new PersistenceContextReader(contexts), ClassReader.SKIP_DEBUG);
        } catch (final IOException e) {
            throw new OpenEJBException("Unable to read class " + c.getName());
        }

        processed.add(c.getName());
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        // Move all the annotations onto the newly implemented methods
        // Ensures CDI and JAX-RS and JAX-WS still work
        Class clazz = classToProxy;
        while (clazz != null && !clazz.equals(Object.class)) {
            try {
                final ClassReader classReader = new ClassReader(readClassFile(clazz));
                final ClassVisitor copyMethodAnnotations = new CopyMethodAnnotations(visitors);
                classReader.accept(copyMethodAnnotations, ClassReader.SKIP_CODE);
            } catch (final IOException e) {
                throw new ProxyGenerationException(e);
            }
            clazz = clazz.getSuperclass();
        }
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        }
    }

    private static void copyClassAnnotations(final Class<?> clazz, final ClassVisitor newClass) throws ProxyGenerationException {
        try {
            final ClassReader classReader = new ClassReader(readClassFile(clazz));
            final ClassVisitor visitor = new CopyClassAnnotations(newClass);
            classReader.accept(visitor, ClassReader.SKIP_CODE);
        } catch (final IOException e) {
            throw new ProxyGenerationException(e);
        }
    }
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     * Fast-parse the given class bytecode to determine if it is an
     * enum class.
     */
    private static boolean isEnum(final byte[] bytes) {
        final IsEnumVisitor isEnumVisitor = new IsEnumVisitor();
        final ClassReader classReader = new ClassReader(bytes);
        classReader.accept(isEnumVisitor, ClassReader.SKIP_DEBUG);
        return isEnumVisitor.isEnum;
    }
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  • org.apache.openejb.config.rules.KeysAnnotationVisitor
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