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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package org.eclipse.jetty.osgi.boot.utils;
20  
21  import org.eclipse.jetty.util.log.Log;
22  import org.eclipse.jetty.util.log.Logger;
23  
24  /**
25   * BundleFileLocatorHelperFactory
26   *
27   * Obtain a helper for locating files based on the bundle.
28   */
29  public class BundleFileLocatorHelperFactory
30  { 
31      private static final Logger LOG = Log.getLogger(BundleFileLocatorHelperFactory.class);
32      
33      private static BundleFileLocatorHelperFactory _instance = new BundleFileLocatorHelperFactory();
34      
35      private BundleFileLocatorHelperFactory() {}
36      
37      public static BundleFileLocatorHelperFactory getFactory()
38      {
39          return _instance;
40      }
41      
42      public BundleFileLocatorHelper getHelper()
43      {
44          BundleFileLocatorHelper helper = BundleFileLocatorHelper.DEFAULT;
45          try
46          {
47              //see if a fragment has supplied an alternative
48              helper = (BundleFileLocatorHelper) Class.forName(BundleFileLocatorHelper.CLASS_NAME).newInstance();
49          }
50          catch (Throwable t)
51          {
52              LOG.ignore(t);
53          }
54          return helper;
55      }
56  
57  }