/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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.seasar.framework.ejb.impl;
import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import javax.annotation.PostConstruct;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
import org.seasar.framework.ejb.EJB3Desc;
import org.seasar.framework.ejb.EJB3InterceptorDesc;
import org.seasar.framework.ejb.SEJBException;
import org.seasar.framework.util.ClassUtil;
/**
* EJB3セッションビーンに適用されるインターセプタを表現するクラスです。
*
* @author koichik
*/
public class EJB3InterceptorDescImpl implements EJB3InterceptorDesc {
/** このインターセプタ定義が適用される{@link EJB3Desc} */
protected EJB3Desc ejb3desc;
/** インターセプタのクラス */
protected Class<?> interceptorClass;
/** このインターセプタが適用されるセッションビーンのビジネスメソッドの{@link List} */
protected LinkedList<Method> interceptorMethods = new LinkedList<Method>();
/** {@link AroundInvoke}で注釈されたインターセプタのメソッド */
protected LinkedList<Method> postConstructMethods = new LinkedList<Method>();
/**
* インスタンスを構築します。
*
* @param ejb3desc
* このインターセプタ定義が適用される{@link EJB3Desc}
* @param interceptorClass
* インターセプタのクラス
*/
public EJB3InterceptorDescImpl(final EJB3Desc ejb3desc,
final Class<?> interceptorClass) {
this.ejb3desc = ejb3desc;
this.interceptorClass = interceptorClass;
ClassUtil.getConstructor(interceptorClass, null);
detectInterceptorMethods();
detectPostConstructMethod();
if (interceptorMethods.isEmpty() && postConstructMethods.isEmpty()) {
throw new SEJBException("ESSR0410", interceptorClass.getName());
}
}
public EJB3Desc getEJB3Desc() {
return ejb3desc;
}
public Class<?> getInterceptorClass() {
return interceptorClass;
}
public List<Method> getInterceptorMethods() {
return interceptorMethods;
}
public List<Method> getPostConstructMethods() {
return postConstructMethods;
}
/**
* このインターセプタが適用されるセッションビーンのビジネスメソッドを検出します。
*/
protected void detectInterceptorMethods() {
final Set<String> methods = new HashSet<String>();
for (Class<?> clazz = interceptorClass; clazz != Object.class; clazz = clazz
.getSuperclass()) {
for (final Method method : clazz.getDeclaredMethods()) {
if (method.isBridge() || method.isSynthetic()) {
continue;
}
final Class<?>[] paramTypes = method.getParameterTypes();
if (paramTypes.length != 1
|| paramTypes[0] != InvocationContext.class) {
continue;
}
if (method.getReturnType() != Object.class) {
continue;
}
final String methodName = method.getName();
if (methods.contains(methodName)) {
continue;
}
methods.add(methodName);
final AroundInvoke aroundInvoke = method
.getAnnotation(AroundInvoke.class);
if (aroundInvoke == null) {
continue;
}
interceptorMethods.addFirst(method);
}
}
}
/**
* {@link AroundInvoke}で注釈されたインターセプタのメソッドを検出します。
*/
protected void detectPostConstructMethod() {
final Set<String> methods = new HashSet<String>();
for (Class<?> clazz = interceptorClass; clazz != Object.class; clazz = clazz
.getSuperclass()) {
for (final Method method : clazz.getDeclaredMethods()) {
if (method.isBridge()) {
continue;
}
final Class<?>[] paramTypes = method.getParameterTypes();
if (paramTypes.length != 1
|| paramTypes[0] != InvocationContext.class) {
continue;
}
if (method.getReturnType() != void.class) {
continue;
}
final String methodName = method.getName();
if (methods.contains(methodName)) {
continue;
}
methods.add(methodName);
final PostConstruct postConstruct = method
.getAnnotation(PostConstruct.class);
if (postConstruct == null) {
continue;
}
postConstructMethods.addFirst(method);
}
}
}
}