Examples with Type org.apache.xbean.asm9.Type used on opensource projects

Example 16 with Type

use of org.apache.xbean.asm9.Type in project tomee by apache.

the class Cmp2Generator method initCmrFields.

/**
 * Initialize the CMR fields associated with a CMR
 * definition.  This initializes two fields per CMR
 * defined field:  1)  The CMR field itself (which might
 * be initialized to an instance of a defined type) and 2)
 * the appropriate CMD accessor that handles the
 * different types of relationship.
 *
 * @param mv       The method context we're initializing in.
 * @param cmrField The CMR field to process.
 */
private void initCmrFields(final MethodVisitor mv, final CmrField cmrField) {
    // this.${cmrField.name} = new ${cmrField.initialValueType}();
    final Type initialValueType = cmrField.getInitialValueType();
    if (initialValueType != null) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitTypeInsn(NEW, initialValueType.getInternalName());
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, initialValueType.getInternalName(), "<init>", "()V", false);
        mv.visitFieldInsn(PUTFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
    }
    // this.${cmrField.name}Cmr = new ${cmrField.accessorType}<${cmrField.type}, ${cmrField.proxyType}>(this,
    // ${cmrField.name},
    // ${cmrField.type},
    // ${cmrField.relatedName});
    mv.visitVarInsn(ALOAD, 0);
    mv.visitTypeInsn(NEW, cmrField.getAccessorInternalName());
    mv.visitInsn(DUP);
    // arg0: EntityBean source = this
    mv.visitVarInsn(ALOAD, 0);
    // arg1: String sourceProperty - "b"
    mv.visitLdcInsn(cmrField.getName());
    // arg2: Class<Bean> relatedType = BBean_BBean
    mv.visitLdcInsn(cmrField.getType());
    // arg3: String relatedProperty
    if (cmrField.getRelatedName() != null) {
        mv.visitLdcInsn(cmrField.getRelatedName());
    } else {
        mv.visitInsn(ACONST_NULL);
    }
    // invoke
    mv.visitMethodInsn(INVOKESPECIAL, cmrField.getAccessorInternalName(), "<init>", "(Ljavax/ejb/EntityBean;Ljava/lang/String;Ljava/lang/Class;Ljava/lang/String;)V", false);
    // bCmr = result
    mv.visitFieldInsn(PUTFIELD, implClassName, cmrField.getName() + "Cmr", cmrField.getAccessorDescriptor());
}

Example 17 with Type

use of org.apache.xbean.asm9.Type in project tomee by apache.

the class Cmp2Generator method createOpenEJB_removeCmr.

private void createOpenEJB_removeCmr() {
    final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "OpenEJB_removeCmr", "(Ljava/lang/String;Ljava/lang/Object;)V", null, null);
    mv.visitCode();
    // if (deleted) return;
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, implClassName, DELETED, "Z");
    final Label notDeleted = new Label();
    mv.visitJumpInsn(IFEQ, notDeleted);
    mv.visitInsn(RETURN);
    mv.visitLabel(notDeleted);
    for (final CmrField cmrField : cmrFields) {
        // if ("${cmrField.name}".equals(name)) {
        // ${cmrField.name}.remove(value);
        // return;
        // }
        // 
        // OR
        // 
        // if ("${cmrField.name}".equals(name)) {
        // ${cmrField.name} = null;
        // return;
        // }
        createOpenEJB_removeCmr(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", false);
    mv.visitLdcInsn("Unknown cmr field ");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitLdcInsn(" on entity bean of type ");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/IllegalArgumentException", "<init>", "(Ljava/lang/String;)V", false);
    mv.visitInsn(ATHROW);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

Example 18 with Type

use of org.apache.xbean.asm9.Type in project tomee by apache.

the class Cmp2Generator method createOpenEJB_addCmr.

/**
 * Generate the OpenEJB_addCmr logic for an individual
 * CMR field.  Each CMR field has a test against the
 * property name, which is passed to the wrappering
 * addCmr method.  This results in a series of
 * if blocks for each defined CMD property.
 *
 * @param mv       The method we're generating within.
 * @param cmrField The CMR field definition.
 */
private void createOpenEJB_addCmr(final MethodVisitor mv, final CmrField cmrField) {
    // if (${cmrField.name}.equals(arg1))
    mv.visitLdcInsn(cmrField.getName());
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "equals", "(Ljava/lang/Object;)Z", false);
    // if not equal jump to end
    final Label end = new Label();
    mv.visitJumpInsn(IFEQ, end);
    // collection already anchored in the CMR field.
    if (cmrField.getCmrStyle() != CmrStyle.SINGLE) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
        mv.visitVarInsn(ASTORE, 3);
        mv.visitVarInsn(ALOAD, 3);
        final Label fieldNotNull = new Label();
        mv.visitJumpInsn(IFNONNULL, fieldNotNull);
        // lazy creation of the collection type if not already created.
        mv.visitTypeInsn(NEW, cmrField.getInitialValueType().getInternalName());
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, cmrField.getInitialValueType().getInternalName(), "<init>", "()V", false);
        mv.visitVarInsn(ASTORE, 3);
        mv.visitLabel(fieldNotNull);
        // ${cmrField.name}.add(arg2)
        mv.visitVarInsn(ALOAD, 3);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEINTERFACE, cmrField.getCmrStyle().getCollectionType().getInternalName(), "add", "(Ljava/lang/Object;)Z", true);
        mv.visitInsn(POP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 3);
        // unconditionally set the CMR field to the collection.  This is either the
        // original one on entry, or a new one for first access.
        mv.visitFieldInsn(PUTFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
        // return null;
        mv.visitInsn(ACONST_NULL);
        mv.visitInsn(ARETURN);
    } else {
        // push: this.${cmrField.name};
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
        // this.${cmrField.name} = (${cmrField.type}) bean;
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitTypeInsn(CHECKCAST, cmrField.getType().getInternalName());
        mv.visitFieldInsn(PUTFIELD, implClassName, cmrField.getName(), cmrField.getDescriptor());
        // return pushed value above
        mv.visitInsn(ARETURN);
    }
    // end of if statement
    mv.visitLabel(end);
}

Example 19 with Type

use of org.apache.xbean.asm9.Type in project tomee by apache.

the class LocalBeanProxyFactory method visit.

public static MethodVisitor visit(final ClassWriter cw, final Method method, final String proxyName, final String handlerName) throws ProxyGenerationException {
    final Class<?> returnType = method.getReturnType();
    final Class<?>[] parameterTypes = method.getParameterTypes();
    final Class<?>[] exceptionTypes = method.getExceptionTypes();
    final int modifiers = method.getModifiers();
    // push the method definition
    int modifier = 0;
    if (Modifier.isPublic(modifiers)) {
        modifier = ACC_PUBLIC;
    } else if (Modifier.isProtected(modifiers)) {
        modifier = ACC_PROTECTED;
    }
    final MethodVisitor mv = cw.visitMethod(modifier, method.getName(), getMethodSignatureAsString(returnType, parameterTypes), null, null);
    mv.visitCode();
    // push try/catch block, to catch declared exceptions, and to catch java.lang.Throwable
    final Label l0 = new Label();
    final Label l1 = new Label();
    final Label l2 = new Label();
    if (exceptionTypes.length > 0) {
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/reflect/InvocationTargetException");
    }
    // push try code
    mv.visitLabel(l0);
    final String classNameToOverride = method.getDeclaringClass().getName().replace('.', '/');
    mv.visitLdcInsn(Type.getType("L" + classNameToOverride + ";"));
    // the following code generates the bytecode for this line of Java:
    // Method method = <proxy>.class.getMethod("add", new Class[] { <array of function argument classes> });
    // get the method name to invoke, and push to stack
    mv.visitLdcInsn(method.getName());
    // create the Class[]
    createArrayDefinition(mv, parameterTypes.length, Class.class);
    int length = 1;
    // push parameters into array
    for (int i = 0; i < parameterTypes.length; i++) {
        // keep copy of array on stack
        mv.visitInsn(DUP);
        final Class<?> parameterType = parameterTypes[i];
        // push number onto stack
        pushIntOntoStack(mv, i);
        if (parameterType.isPrimitive()) {
            final String wrapperType = getWrapperType(parameterType);
            mv.visitFieldInsn(GETSTATIC, wrapperType, "TYPE", "Ljava/lang/Class;");
        } else {
            mv.visitLdcInsn(Type.getType(getAsmTypeAsString(parameterType, true)));
        }
        mv.visitInsn(AASTORE);
        if (Long.TYPE.equals(parameterType) || Double.TYPE.equals(parameterType)) {
            length += 2;
        } else {
            length++;
        }
    }
    // invoke getMethod() with the method name and the array of types
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredMethod", "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;", false);
    // store the returned method for later
    mv.visitVarInsn(ASTORE, length);
    // the following code generates bytecode equivalent to:
    // return ((<returntype>) invocationHandler.invoke(this, method, new Object[] { <function arguments }))[.<primitive>Value()];
    final Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitVarInsn(ALOAD, 0);
    // get the invocationHandler field from this class
    mv.visitFieldInsn(GETFIELD, proxyName, handlerName, "Ljava/lang/reflect/InvocationHandler;");
    // we want to pass "this" in as the first parameter
    mv.visitVarInsn(ALOAD, 0);
    // and the method we fetched earlier
    mv.visitVarInsn(ALOAD, length);
    // need to construct the array of objects passed in
    // create the Object[]
    createArrayDefinition(mv, parameterTypes.length, Object.class);
    int index = 1;
    // push parameters into array
    for (int i = 0; i < parameterTypes.length; i++) {
        // keep copy of array on stack
        mv.visitInsn(DUP);
        final Class<?> parameterType = parameterTypes[i];
        // push number onto stack
        pushIntOntoStack(mv, i);
        if (parameterType.isPrimitive()) {
            final String wrapperType = getWrapperType(parameterType);
            mv.visitVarInsn(getVarInsn(parameterType), index);
            mv.visitMethodInsn(INVOKESTATIC, wrapperType, "valueOf", "(" + getPrimitiveLetter(parameterType) + ")L" + wrapperType + ";", false);
            mv.visitInsn(AASTORE);
            if (Long.TYPE.equals(parameterType) || Double.TYPE.equals(parameterType)) {
                index += 2;
            } else {
                index++;
            }
        } else {
            mv.visitVarInsn(ALOAD, index);
            mv.visitInsn(AASTORE);
            index++;
        }
    }
    // invoke the invocationHandler
    mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/reflect/InvocationHandler", "invoke", "(Ljava/lang/Object;Ljava/lang/reflect/Method;[Ljava/lang/Object;)Ljava/lang/Object;", true);
    // cast the result
    mv.visitTypeInsn(CHECKCAST, getCastType(returnType));
    if (returnType.isPrimitive() && !Void.TYPE.equals(returnType)) {
        // get the primitive value
        mv.visitMethodInsn(INVOKEVIRTUAL, getWrapperType(returnType), getPrimitiveMethod(returnType), "()" + getPrimitiveLetter(returnType), false);
    }
    // push return
    mv.visitLabel(l1);
    if (!Void.TYPE.equals(returnType)) {
        mv.visitInsn(getReturnInsn(returnType));
    } else {
        mv.visitInsn(POP);
        mv.visitInsn(RETURN);
    }
    // catch InvocationTargetException
    if (exceptionTypes.length > 0) {
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, length);
        final Label l5 = new Label();
        mv.visitLabel(l5);
        for (int i = 0; i < exceptionTypes.length; i++) {
            final Class<?> exceptionType = exceptionTypes[i];
            mv.visitLdcInsn(Type.getType("L" + exceptionType.getName().replace('.', '/') + ";"));
            mv.visitVarInsn(ALOAD, length);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z", false);
            final Label l6 = new Label();
            mv.visitJumpInsn(IFEQ, l6);
            final Label l7 = new Label();
            mv.visitLabel(l7);
            mv.visitVarInsn(ALOAD, length);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
            mv.visitTypeInsn(CHECKCAST, exceptionType.getName().replace('.', '/'));
            mv.visitInsn(ATHROW);
            mv.visitLabel(l6);
            if (i == exceptionTypes.length - 1) {
                mv.visitTypeInsn(NEW, "java/lang/reflect/UndeclaredThrowableException");
                mv.visitInsn(DUP);
                mv.visitVarInsn(ALOAD, length);
                mv.visitMethodInsn(INVOKESPECIAL, "java/lang/reflect/UndeclaredThrowableException", "<init>", "(Ljava/lang/Throwable;)V", false);
                mv.visitInsn(ATHROW);
            }
        }
    }
    // finish this method
    mv.visitMaxs(0, 0);
    return mv;
}

Example 20 with Type

use of org.apache.xbean.asm9.Type in project tomee by apache.

the class KeysAnnotationVisitor method visit.

@Override
public void visit(final String name, final Object value) {
    if ("value".equals(name)) {
        if (value instanceof Type) {
            final Type type = (Type) value;
            final int sort = type.getSort();
            switch(sort) {
                case Type.OBJECT:
                    if (type.getClassName().equals(ValidationRunner.class.getName())) {
                        classInfos.add(current);
                    }
                    break;
            }
        } else {
            currentMethod.keys.add((String) value);
        }
    }
}