001/*
002 * (C) Copyright 2006-2009 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 * $Id$
020 */
021
022package org.nuxeo.ecm.platform.ui.web.cache;
023
024/**
025 * Helper class to check if Seam s:cache tag can be used (s:cache does not only require jboss-cache, but also some
026 * internal classes.
027 *
028 * @author Thierry Delprat
029 */
030public class SeamCacheHelper {
031
032    protected static Boolean canUseSeamCache;
033
034    private SeamCacheHelper() {
035    }
036
037    public static boolean canUseSeamCache() {
038        if (canUseSeamCache == null) {
039            canUseSeamCache = false;
040            try {
041                Class.forName("org.jboss.system.ServiceMBeanSupport");
042                canUseSeamCache = true;
043            } catch (ClassNotFoundException e) {
044            }
045        }
046        return canUseSeamCache.booleanValue();
047    }
048}