/*
* 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;
import java.util.concurrent.ConcurrentMap;
import org.seasar.framework.ejb.impl.EJB3DescImpl;
import org.seasar.framework.util.Disposable;
import org.seasar.framework.util.DisposableUtil;
import org.seasar.framework.util.tiger.CollectionsUtil;
/**
* EJB3セッションビーン定義のインスタンスを生成するファクトリクラスです。
*
* @author koichik
*/
public class EJB3DescFactory {
private static boolean initialized;
/** {@link EJB3Desc}のキャッシュ */
protected static final ConcurrentMap<Class<?>, EJB3DescImpl> ejb3Descs = CollectionsUtil
.newConcurrentHashMap();
static {
initialize();
}
/**
* 初期化します。
*/
public static void initialize() {
if (initialized) {
return;
}
DisposableUtil.add(new Disposable() {
public void dispose() {
EJB3DescFactory.dispose();
}
});
initialized = true;
}
/**
* {@link EJB3Desc}のキャッシュをクリアします。
*/
public static void dispose() {
ejb3Descs.clear();
initialized = false;
}
/**
* {@code beanClass}に対応する{@link EJB3Desc}のインスタンスを返します。
* <p>
* {@code beanClass}がEJB3セッションビーンでない場合は{@code null}を返します。
* </p>
*
* @param beanClass
* セッションビーンクラス
* @return {@code beanClass}に対応する{@link EJB3Desc}のインスタンス
*/
public static EJB3Desc getEJB3Desc(final Class<?> beanClass) {
initialize();
EJB3DescImpl ejb3Desc = ejb3Descs.get(beanClass);
if (ejb3Desc == null) {
ejb3Desc = CollectionsUtil.putIfAbsent(ejb3Descs, beanClass,
new EJB3DescImpl(beanClass));
}
return ejb3Desc.isEJB3() ? ejb3Desc : null;
}
}