JavaImplementationBuilder


1   /***
2    * Fractal ADL Parser
3    * Copyright (C) 2002-2004 France Telecom R&D
4    *
5    * This library is free software; you can redistribute it and/or
6    * modify it under the terms of the GNU Lesser General Public
7    * License as published by the Free Software Foundation; either
8    * version 2 of the License, or (at your option) any later version.
9    *
10   * This library is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   * Lesser General Public License for more details.
14   *
15   * You should have received a copy of the GNU Lesser General Public
16   * License along with this library; if not, write to the Free Software
17   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18   *
19   * Contact: Eric.Bruneton@rd.francetelecom.com
20   *
21   * Author: Eric Bruneton
22   */
23  
24  package org.objectweb.fractal.adl.implementations;
25  
26  import java.util.HashMap  ;
27  import java.util.Map  ;
28  
29  /**
30   * A Java based implementation of the {@link ImplementationBuilder} interface. 
31   */
32  
33  public class JavaImplementationBuilder implements ImplementationBuilder {
34    
35    // --------------------------------------------------------------------------
36    // Implementation of the ImplementationBuilder interface
37    // --------------------------------------------------------------------------
38    
39    public Object   createComponent (
40      final Object   type, 
41      final String   name,
42      final String   definition,
43      final Object   controllerDesc, 
44      final Object   contentDesc, 
45      final Object   context) throws Exception   
46    {
47      ClassLoader   loader = null;
48      if (context instanceof Map  ) {
49        loader = (ClassLoader  )((Map  )context).get("classloader");
50      }
51      if (loader == null) {
52        loader = getClass().getClassLoader();
53      }
54      
55      if (contentDesc == null) {
56        return new HashMap  ();
57      } else {
58        String   c = (String  )contentDesc;
59        return loader.loadClass(c).newInstance();
60      }
61    }
62  }
63
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