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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed 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.apache.tuscany.core.config.impl;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import org.apache.tuscany.core.config.ComponentTypeIntrospector;
import org.apache.tuscany.core.config.ConfigurationLoadException;
import org.apache.tuscany.core.config.JavaIntrospectionHelper;
import org.apache.tuscany.core.config.processor.ProcessorUtils;
import org.apache.tuscany.core.extension.config.ImplementationProcessor;
import org.apache.tuscany.core.system.annotation.Autowire;
import org.apache.tuscany.core.system.assembly.SystemAssemblyFactory;
import org.apache.tuscany.model.assembly.AssemblyFactory;
import org.apache.tuscany.model.assembly.ComponentType;
import org.osoa.sca.annotations.Init;
import org.osoa.sca.annotations.ComponentName;
/**
* Introspects Java annotation-based metata data
*
* @version $Rev$ $Date$
*/
@org.osoa.sca.annotations.Service(ComponentTypeIntrospector.class)
public class Java5ComponentTypeIntrospector implements ComponentTypeIntrospector {
private AssemblyFactory factory;
private List<ImplementationProcessor> processors = new ArrayList<ImplementationProcessor>();
public Java5ComponentTypeIntrospector() {
}
public Java5ComponentTypeIntrospector(AssemblyFactory factory) {
this.factory = factory;
}
@Autowire
public void setFactory(SystemAssemblyFactory factory) {
this.factory = factory;
//FIXME JFM HACK
List<ImplementationProcessor> processors = ProcessorUtils.createCoreProcessors(factory);
for (ImplementationProcessor processor : processors) {
this.registerProcessor(processor);
}
// END hack
}
@ComponentName
protected String name;
@Init(eager = true)
public void init(){
}
public void registerProcessor(ImplementationProcessor processor) {
processors.add(processor);
}
public void unregisterProcessor(ImplementationProcessor processor) {
processors.remove(processor);
}
/**
* Visits the given implementation type and calls back to {@link org.apache.tuscany.core.extension.config.ImplementationProcessor}s
* registered with this introspector to build up a {@link ComponentType}
*
* @return ComponentType representing the implementation type metadata
* @throws ConfigurationLoadException if there is an error introspecting the implementation type
*/
public ComponentType introspect(Class<?> implClass) throws ConfigurationLoadException {
ComponentType compType = factory.createComponentType();
return introspect(implClass, compType);
}
public ComponentType introspect(Class<?> implClass, ComponentType compType) throws ConfigurationLoadException {
for (ImplementationProcessor processor : processors) {
processor.visitClass(implClass, compType);
}
Constructor[] constructors = implClass.getConstructors();
for (Constructor constructor : constructors) {
for (ImplementationProcessor processor : processors) {
processor.visitConstructor(constructor, compType);
}
}
Method[] methods = implClass.getMethods();
for (Method method : methods) {
for (ImplementationProcessor processor : processors) {
processor.visitMethod(method, compType);
}
}
Set<Field> fields = JavaIntrospectionHelper.getAllPublicAndProtectedFields(implClass);
for (Field field : fields) {
for (ImplementationProcessor processor : processors) {
processor.visitField(field, compType);
}
}
Class superClass = implClass.getSuperclass();
if (superClass != null) {
visitSuperClass(superClass, compType);
}
for (ImplementationProcessor processor : processors) {
processor.visitEnd(implClass, compType);
}
return compType;
}
private void visitSuperClass(Class<?> superClass, ComponentType compType) throws ConfigurationLoadException {
if (!Object.class.equals(superClass)) {
for (ImplementationProcessor processor : processors) {
processor.visitSuperClass(superClass, compType);
}
superClass = superClass.getSuperclass();
if (superClass != null) {
visitSuperClass(superClass, compType);
}
}
}
}
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