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1   /*
2    * Copyright 2012-2013 smartics, Kronseder & Reiner GmbH
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package de.smartics.properties.spi.config.cache.infinispan;
17  
18  import static de.smartics.properties.spi.config.cache.CacheConfigurationLoader.CACHE_ID;
19  import static de.smartics.properties.spi.config.cache.CacheConfigurationLoader.JNDI_NAME;
20  
21  import java.util.Properties;
22  
23  import javax.naming.InitialContext;
24  import javax.naming.NamingException;
25  
26  import org.infinispan.manager.EmbeddedCacheManager;
27  
28  import de.smartics.properties.spi.config.cache.CacheConfigurationLoader;
29  import de.smartics.properties.spi.config.cache.CacheException;
30  import de.smartics.properties.spi.config.cache.CacheMessageBean;
31  
32  /**
33   * This service looks up the jndi name in the cache.properties file and fetches
34   * the CacheManager using this name from the jndi context.
35   */
36  public final class JndiCacheManagerLookupService
37  {
38    // ********************************* Fields *********************************
39  
40    // --- constants ------------------------------------------------------------
41  
42    // --- members --------------------------------------------------------------
43  
44    // ****************************** Initializer *******************************
45  
46    // ****************************** Constructors ******************************
47  
48    /**
49     * Default.
50     */
51    public JndiCacheManagerLookupService()
52    {
53  
54    }
55  
56    // ****************************** Inner Classes *****************************
57  
58    // ********************************* Methods ********************************
59  
60    // --- init -----------------------------------------------------------------
61  
62    // --- get&set --------------------------------------------------------------
63  
64    // --- business -------------------------------------------------------------
65  
66    /**
67     * Creates the embedded cache manager.
68     *
69     * @return the embedded cache manager.
70     */
71    public EmbeddedCacheManager createManager()
72    {
73      final CacheConfigurationLoader loader = new CacheConfigurationLoader();
74      final Properties properties = loader.load();
75      final String mappedName = properties.getProperty(JNDI_NAME);
76      final EmbeddedCacheManager manager =
77          lookup(properties.getProperty(CACHE_ID), mappedName);
78      return manager;
79    }
80  
81    private EmbeddedCacheManager lookup(final String cacheId,
82        final String mappedName)
83    {
84      try
85      {
86        final InitialContext context = new InitialContext();
87        final Object o = context.lookup(mappedName);
88        final EmbeddedCacheManager manager = (EmbeddedCacheManager) o;
89        return manager;
90      }
91      catch (final NamingException e)
92      {
93        throw new CacheException(CacheMessageBean.jndi(e, cacheId, mappedName));
94      }
95    }
96    // --- object basics --------------------------------------------------------
97  
98  }