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Apache CXF Runtime WS Security

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * 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.apache.cxf.ws.security.cache;

import java.net.URL;

import net.sf.ehcache.CacheManager;

import org.apache.cxf.Bus;
import org.apache.wss4j.common.cache.EHCacheManagerHolder;

public final class EHCacheUtils {
    public static final String GLOBAL_EHCACHE_MANAGER_NAME = 
            "ws-security.global.ehcachemanager";

    private EHCacheUtils() {
    }

    public static CacheManager getCacheManager(Bus bus, URL configFileURL) {
        CacheManager cacheManager = null;
        
        String globalCacheManagerName = getGlobalCacheManagerName(bus);
        if (globalCacheManagerName != null) {
            cacheManager = CacheManager.getCacheManager(globalCacheManagerName);
        }
        
        if (cacheManager == null) {
            String confName = "";
            if (bus != null) {
                confName = bus.getId();
            }
            cacheManager = EHCacheManagerHolder.getCacheManager(confName, configFileURL);
        }
        return cacheManager;
    }
    
    private static String getGlobalCacheManagerName(Bus bus) {
        if (bus != null) {
            return (String) bus.getProperty(GLOBAL_EHCACHE_MANAGER_NAME);
        } else {
            return null;
        }
    }
}