1   /**
2    * Distribution License:
3    * JSword is free software; you can redistribute it and/or modify it under
4    * the terms of the GNU Lesser General Public License, version 2.1 or later
5    * as published by the Free Software Foundation. This program is distributed
6    * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
7    * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
8    * See the GNU Lesser General Public License for more details.
9    *
10   * The License is available on the internet at:
11   *      http://www.gnu.org/copyleft/lgpl.html
12   * or by writing to:
13   *      Free Software Foundation, Inc.
14   *      59 Temple Place - Suite 330
15   *      Boston, MA 02111-1307, USA
16   *
17   * © CrossWire Bible Society, 2005 - 2016
18   *
19   */
20  package org.crosswire.jsword.index;
21  
22  import java.io.IOException;
23  
24  import org.crosswire.common.util.PluginUtil;
25  import org.slf4j.Logger;
26  import org.slf4j.LoggerFactory;
27  
28  /**
29   * A Factory class for IndexManagers.
30   * 
31   * @see gnu.lgpl.License The GNU Lesser General Public License for details.
32   * @author Joe Walker
33   */
34  public final class IndexManagerFactory {
35      /**
36       * Prevent instantiation
37       */
38      private IndexManagerFactory() {
39      }
40  
41      /**
42       * Create a new IndexManager.
43       * 
44       * @return the singleton index manager
45       */
46      public static IndexManager getIndexManager() {
47          return instance;
48      }
49  
50      /**
51       * The singleton
52       */
53      private static IndexManager instance;
54  
55      /**
56       * The log stream
57       */
58      private static final Logger log = LoggerFactory.getLogger(IndexManagerFactory.class);
59  
60      /**
61       * Setup the instance
62       */
63      static {
64          try {
65              instance = PluginUtil.getImplementation(IndexManager.class);
66          } catch (IOException e) {
67              log.error("createIndexManager failed", e);
68          } catch (ClassCastException e) {
69              log.error("createIndexManager failed", e);
70          } catch (ClassNotFoundException e) {
71              log.error("createIndexManager failed", e);
72          } catch (IllegalAccessException e) {
73              log.error("createIndexManager failed", e);
74          } catch (InstantiationException e) {
75              log.error("createIndexManager failed", e);
76          }
77      }
78  }
79