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1   /*
2    *   Copyright (C) Christian Schulte, 2005-206
3    *   All rights reserved.
4    *
5    *   Redistribution and use in source and binary forms, with or without
6    *   modification, are permitted provided that the following conditions
7    *   are met:
8    *
9    *     o Redistributions of source code must retain the above copyright
10   *       notice, this list of conditions and the following disclaimer.
11   *
12   *     o Redistributions in binary form must reproduce the above copyright
13   *       notice, this list of conditions and the following disclaimer in
14   *       the documentation and/or other materials provided with the
15   *       distribution.
16   *
17   *   THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
18   *   INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
19   *   AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
20   *   THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT,
21   *   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22   *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23   *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24   *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25   *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26   *   THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27   *
28   *   $JOMC: NullModelProvider.java 3851 2011-10-10 16:25:09Z schulte2005 $
29   *
30   */
31  package org.jomc.modlet.test.support;
32  
33  import org.jomc.modlet.Model;
34  import org.jomc.modlet.ModelContext;
35  import org.jomc.modlet.ModelException;
36  import org.jomc.modlet.ModelProvider;
37  
38  /**
39   * {@code ModelProvider} test implementation returning {@code null}.
40   *
41   * @author <a href="mailto:schulte2005@users.sourceforge.net">Christian Schulte</a> 1.0
42   * @version $JOMC: NullModelProvider.java 3851 2011-10-10 16:25:09Z schulte2005 $
43   */
44  public final class NullModelProvider implements ModelProvider
45  {
46  
47      public NullModelProvider()
48      {
49          super();
50      }
51  
52      public Model findModel( final ModelContext context, final Model model ) throws ModelException
53      {
54          if ( context == null )
55          {
56              throw new NullPointerException( "context" );
57          }
58          if ( model == null )
59          {
60              throw new NullPointerException( "model" );
61          }
62  
63          context.setAttribute( NullModelProvider.class.getName(), this );
64          return null;
65      }
66  
67  }