Package org.apache.xbean.asm

Examples of org.apache.xbean.asm.ClassWriter

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        createTopLinkStrategy(file);
        createEclipseLinkStrategy(file);
    }

    private static void createNewHibernateStrategy(File basedir) throws Exception {
        ClassWriter cw = new ClassWriter(0);
        MethodVisitor mv;

        cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, "org/apache/openejb/hibernate/OpenEJBJtaPlatform", null, "org/hibernate/service/jta/platform/internal/AbstractJtaPlatform", null);

        {
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, "org/hibernate/service/jta/platform/internal/AbstractJtaPlatform", "<init>", "()V");
            mv.visitInsn(RETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PROTECTED, "locateTransactionManager", "()Ljavax/transaction/TransactionManager;", null, null);
            mv.visitCode();
            mv.visitMethodInsn(INVOKESTATIC, "org/apache/openejb/OpenEJB", "getTransactionManager", "()Ljavax/transaction/TransactionManager;");
            mv.visitInsn(ARETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PROTECTED, "locateUserTransaction", "()Ljavax/transaction/UserTransaction;", null, null);
            mv.visitCode();
            Label l0 = new Label();
            Label l1 = new Label();
            Label l2 = new Label();
            mv.visitTryCatchBlock(l0, l1, l2, "javax/naming/NamingException");
            mv.visitLabel(l0);
            mv.visitMethodInsn(INVOKESTATIC, "org/apache/openejb/loader/SystemInstance", "get", "()Lorg/apache/openejb/loader/SystemInstance;");
            mv.visitLdcInsn(Type.getType("Lorg/apache/openejb/spi/ContainerSystem;"));
            mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/openejb/loader/SystemInstance", "getComponent", "(Ljava/lang/Class;)Ljava/lang/Object;");
            mv.visitTypeInsn(CHECKCAST, "org/apache/openejb/spi/ContainerSystem");
            mv.visitMethodInsn(INVOKEINTERFACE, "org/apache/openejb/spi/ContainerSystem", "getJNDIContext", "()Ljavax/naming/Context;");
            mv.visitLdcInsn("comp/UserTransaction");
            mv.visitMethodInsn(INVOKEINTERFACE, "javax/naming/Context", "lookup", "(Ljava/lang/String;)Ljava/lang/Object;");
            mv.visitTypeInsn(CHECKCAST, "javax/transaction/UserTransaction");
            mv.visitLabel(l1);
            mv.visitInsn(ARETURN);
            mv.visitLabel(l2);
            mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[]{"javax/naming/NamingException"});
            mv.visitVarInsn(ASTORE, 1);
            mv.visitInsn(ACONST_NULL);
            mv.visitInsn(ARETURN);
            mv.visitMaxs(2, 2);
            mv.visitEnd();
        }
        cw.visitEnd();

        String factory = HIBERNATE_NEW_FACTORY;
        String classFilePath = factory.replace('.', '/');
        write(basedir, cw, classFilePath);
    }
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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, "java/lang/Object", new String[]{"org/hibernate/transaction/TransactionManagerLookup"});

        cw.visitSource(sourceFileName, null);

        {
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
            mv.visitInsn(RETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "getTransactionManager", "(Ljava/util/Properties;)Ljavax/transaction/TransactionManager;", null, new String[]{"org/hibernate/HibernateException"});
            mv.visitCode();
            mv.visitMethodInsn(INVOKESTATIC, "org/apache/openejb/OpenEJB", "getTransactionManager", "()Ljavax/transaction/TransactionManager;");
            mv.visitInsn(ARETURN);
            mv.visitMaxs(1, 2);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "getUserTransactionName", "()Ljava/lang/String;", null, null);
            mv.visitCode();
            mv.visitLdcInsn("java:comp/UserTransaction");
            mv.visitInsn(ARETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "getTransactionIdentifier", "(Ljavax/transaction/Transaction;)Ljava/lang/Object;", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 1);
            mv.visitInsn(ARETURN);
            mv.visitMaxs(1, 2);
            mv.visitEnd();
        }
        cw.visitEnd();


        write(baseDir, cw, classFilePath);
    }
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            throw new InternalError(e.toString());
        }
    }

  private byte[] generateProxy(Class<?> clsToProxy, String proxyName) throws ProxyGenerationException {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    FieldVisitor fv;
    MethodVisitor mv;

    String clsToOverride = clsToProxy.getName().replaceAll("\\.", "/");
        String proxyClassName = proxyName.replaceAll("\\.", "/");

        // push class signature
        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, proxyClassName, null, clsToOverride, null);
    cw.visitSource(clsToOverride + ".java", null);

    // push InvocationHandler field
    fv = cw.visitField(ACC_FINAL + ACC_PRIVATE, "invocationHandler", "Ljava/lang/reflect/InvocationHandler;", null, null);
    fv.visitEnd();
   
    // push constructor
    mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Ljava/lang/reflect/InvocationHandler;)V", null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, clsToOverride, "<init>", "()V");
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitFieldInsn(PUTFIELD, proxyName, "invocationHandler", "Ljava/lang/reflect/InvocationHandler;");
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();

    // loop through public methods, and push something to the class
    Method[] methods = clsToProxy.getDeclaredMethods();
    for (Method method : methods) {
      processMethod(cw, method, proxyClassName, clsToOverride);
    }
   
    byte[] clsBytes = cw.toByteArray();
    return clsBytes;
  }
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        }

        // The class writer will be used for all generator activies, while the
        // postCreateGenerator will be used to add the ejbPostCreatexxxx methods as a
        // last step.
        cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
        postCreateGenerator = new PostCreateGenerator(beanClass, cw);
    }
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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, "java/lang/Object", new String[]{"org/hibernate/transaction/TransactionManagerLookup"});

        cw.visitSource(sourceFileName, null);

        {
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
            mv.visitInsn(RETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "getTransactionManager", "(Ljava/util/Properties;)Ljavax/transaction/TransactionManager;", null, new String[]{"org/hibernate/HibernateException"});
            mv.visitCode();
            mv.visitMethodInsn(INVOKESTATIC, "org/apache/openejb/OpenEJB", "getTransactionManager", "()Ljavax/transaction/TransactionManager;");
            mv.visitInsn(ARETURN);
            mv.visitMaxs(1, 2);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "getUserTransactionName", "()Ljava/lang/String;", null, null);
            mv.visitCode();
            mv.visitLdcInsn("java:comp/UserTransaction");
            mv.visitInsn(ARETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "getTransactionIdentifier", "(Ljavax/transaction/Transaction;)Ljava/lang/Object;", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 1);
            mv.visitInsn(ARETURN);
            mv.visitMaxs(1, 2);
            mv.visitEnd();
        }
        cw.visitEnd();


        write(baseDir, cw, classFilePath);
    }
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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, "oracle/toplink/essentials/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, "oracle/toplink/essentials/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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        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 byte[] generateProxy(ClassLoader classLoader, Class<?> classToProxy, String proxyClassName, String proxyClassFileName,
                                 Method[] interceptedMethods, Method[] nonInterceptedMethods)
            throws ProxyGenerationException
    {
        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
        String classFileName = classToProxy.getName().replace('.', '/');

        String[] interfaceNames = new String[]{Type.getInternalName(getMarkerInterface())};
        String superClassName = classFileName;

        if (classToProxy.isInterface())
        {
            interfaceNames = new String[]{Type.getInternalName(classToProxy), interfaceNames[0]};
            superClassName = Type.getInternalName(Object.class);
        }

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

        createInstanceVariables(cw, classToProxy, classFileName);
        createSerialisation(cw, proxyClassFileName, classToProxy, classFileName);



        // create a static String Field which contains the passivationId of the Bean or null if not PassivationCapable
        cw.visitField(Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC,
                FIELD_BEAN_PASSIVATION_ID, Type.getDescriptor(String.class), null, null).visitEnd();

        createConstructor(cw, proxyClassFileName, classToProxy, classFileName);


        if (nonInterceptedMethods != null)
        {
            delegateNonInterceptedMethods(classLoader, cw, proxyClassFileName, classToProxy, nonInterceptedMethods);
        }

        if (interceptedMethods != null)
        {
            delegateInterceptedMethods(classLoader, cw, proxyClassFileName, classToProxy, interceptedMethods);
        }

        return cw.toByteArray();
    }
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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);

        byte[] newBytes = classWriter.toByteArray();
        return newBytes;
    }
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        }

        // The class writer will be used for all generator activies, while the
        // postCreateGenerator will be used to add the ejbPostCreatexxxx methods as a
        // last step.
        cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
        postCreateGenerator = new PostCreateGenerator(beanClass, cw);
    }
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  • org.apache.openejb.jpa.integration.MakeTxLookup
  • org.apache.openejb.util.MakeTxLookup
  • org.apache.openejb.util.proxy.LocalBeanProxyFactory
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  • org.apache.openjpa.enhance.AsmAdaptor
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