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1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements. See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership. The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License. You may obtain a copy of the License at
9    *
10   * http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied. See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  
20  package org.apache.wss4j.common.cache;
21  
22  /**
23   * Some functionality to detect if EhCache is available or not.
24   */
25  public final class WSS4JCacheUtil {
26  
27      private static final org.slf4j.Logger LOG =
28          org.slf4j.LoggerFactory.getLogger(WSS4JCacheUtil.class);
29      private static final boolean EH_CACHE_INSTALLED;
30  
31      static {
32          boolean ehCacheInstalled = false;
33          try {
34              Class<?> cacheManagerClass = Class.forName("org.ehcache.CacheManager");
35              if (cacheManagerClass != null) {
36                  ehCacheInstalled = true;
37              }
38          } catch (Exception e) {
39              //ignore
40              LOG.debug(e.getMessage());
41          }
42          EH_CACHE_INSTALLED = ehCacheInstalled;
43      }
44  
45      private WSS4JCacheUtil() {
46          // complete
47      }
48  
49      public static boolean isEhCacheInstalled() {
50          return EH_CACHE_INSTALLED;
51      }
52  
53  }