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Fabric3 Introspection Implementation.
/*
* See the NOTICE file distributed with this work for information
* regarding copyright ownership. This file is licensed
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.fabric3.introspection.impl;
import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Map;
import org.osoa.sca.annotations.Reference;
import org.fabric3.introspection.IntrospectionContext;
import org.fabric3.introspection.java.AnnotationProcessor;
import org.fabric3.introspection.java.ClassWalker;
import org.fabric3.scdl.Implementation;
import org.fabric3.scdl.InjectingComponentType;
/**
* @version $Rev: 4286 $ $Date: 2008-05-21 20:56:34 +0100 (Wed, 21 May 2008) $
*/
public class DefaultClassWalker> implements ClassWalker {
private Map, AnnotationProcessor> processors;
/**
* Constructor used from the bootstrapper.
*
* @param processors
*/
public DefaultClassWalker(Map, AnnotationProcessor> processors) {
this.processors = processors;
}
/**
* Constructor used from the system SCDL.
*
* TODO This needs to be working once the re-injection is working properly.
*/
@org.osoa.sca.annotations.Constructor
public DefaultClassWalker() {
}
@Reference
public void setProcessors(Map, AnnotationProcessor> processors) {
this.processors = processors;
}
public void walk(I implementation, Class clazz, IntrospectionContext context) {
if (!clazz.isInterface()) {
walkSuperClasses(implementation, clazz, context);
}
walkInterfaces(implementation, clazz, context);
walkClass(implementation, clazz, context);
walkFields(implementation, clazz, context);
walkMethods(implementation, clazz, context);
walkConstructors(implementation, clazz, context);
}
private void walkSuperClasses(I implementation, Class clazz, IntrospectionContext context) {
Class superClass = clazz.getSuperclass();
if (superClass != null) {
walk(implementation, superClass, context);
}
}
private void walkInterfaces(I implementation, Class clazz, IntrospectionContext context) {
for (Class interfaze : clazz.getInterfaces()) {
walk(implementation, interfaze, context);
}
}
private void walkClass(I implementation, Class clazz, IntrospectionContext context) {
for (Annotation annotation : clazz.getDeclaredAnnotations()) {
visitType(annotation, clazz, implementation, context);
}
}
private void walkFields(I implementation, Class clazz, IntrospectionContext context) {
for (Field field : clazz.getDeclaredFields()) {
for (Annotation annotation : field.getDeclaredAnnotations()) {
visitField(annotation, field, implementation, context);
}
}
}
private void walkMethods(I implementation, Class clazz, IntrospectionContext context) {
for (Method method : clazz.getDeclaredMethods()) {
for (Annotation annotation : method.getDeclaredAnnotations()) {
visitMethod(annotation, method, implementation, context);
}
Annotation[][] parameterAnnotations = method.getParameterAnnotations();
for (int i = 0; i < parameterAnnotations.length; i++) {
Annotation[] annotations = parameterAnnotations[i];
for (Annotation annotation : annotations) {
visitMethodParameter(annotation, method, i, implementation, context);
}
}
}
}
private void walkConstructors(I implementation, Class clazz, IntrospectionContext context) {
for (Constructor constructor : clazz.getDeclaredConstructors()) {
for (Annotation annotation : constructor.getDeclaredAnnotations()) {
visitConstructor(annotation, constructor, implementation, context);
}
Annotation[][] parameterAnnotations = constructor.getParameterAnnotations();
for (int i = 0; i < parameterAnnotations.length; i++) {
Annotation[] annotations = parameterAnnotations[i];
for (Annotation annotation : annotations) {
visitConstructorParameter(annotation, constructor, i, implementation, context);
}
}
}
}
private void visitType(A annotation, Class clazz, I implementation, IntrospectionContext context) {
AnnotationProcessor processor = getProcessor(annotation);
if (processor != null) {
processor.visitType(annotation, clazz, implementation, context);
}
}
private void visitField(A annotation, Field field, I implementation, IntrospectionContext context) {
AnnotationProcessor processor = getProcessor(annotation);
if (processor != null) {
processor.visitField(annotation, field, implementation, context);
}
}
private void visitMethod(A annotation, Method method, I implementation, IntrospectionContext context) {
AnnotationProcessor processor = getProcessor(annotation);
if (processor != null) {
processor.visitMethod(annotation, method, implementation, context);
}
}
private void visitMethodParameter(A annotation, Method method, int index, I implementation, IntrospectionContext context) {
AnnotationProcessor processor = getProcessor(annotation);
if (processor != null) {
processor.visitMethodParameter(annotation, method, index, implementation, context);
}
}
private void visitConstructor(A annotation, Constructor constructor, I implementation, IntrospectionContext context) {
AnnotationProcessor processor = getProcessor(annotation);
if (processor != null) {
processor.visitConstructor(annotation, constructor, implementation, context);
}
}
private void visitConstructorParameter(A annotation, Constructor constructor, int index, I implementation, IntrospectionContext context) {
AnnotationProcessor processor = getProcessor(annotation);
if (processor != null) {
processor.visitConstructorParameter(annotation, constructor, index, implementation, context);
}
}
@SuppressWarnings("unchecked")
private AnnotationProcessor getProcessor(A annotation) {
return (AnnotationProcessor) processors.get(annotation.annotationType());
}
}