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1   /**
2    * Copyright (c) 2002-2011 "Neo Technology,"
3    * Network Engine for Objects in Lund AB [http://neotechnology.com]
4    *
5    * This file is part of Neo4j.
6    *
7    * Neo4j is free software: you can redistribute it and/or modify
8    * it under the terms of the GNU General Public License as published by
9    * the Free Software Foundation, either version 3 of the License, or
10   * (at your option) any later version.
11   *
12   * This program is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   * GNU General Public License for more details.
16   *
17   * You should have received a copy of the GNU General Public License
18   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
19   */
20  package org.neo4j.server.rest.repr;
21  
22  import javax.ws.rs.core.MediaType;
23  import javax.ws.rs.core.Response;
24  import java.net.URI;
25  import java.util.Collection;
26  import java.util.List;
27  import java.util.Map;
28  
29  
30  /**
31   * This class decorates another RepresentationFormat (called inner here), and tries to use
32   * inner to parse stuff. If it fails, it will throw an appropriate exception, and not just
33   * blow up with an exception that leads to HTTP STATUS 500
34   */
35  public class DefaultFormat extends RepresentationFormat
36  {
37      private final RepresentationFormat inner;
38      private final Collection<MediaType> supported;
39      private final MediaType[] requested;
40  
41      public DefaultFormat( RepresentationFormat inner,
42                            Collection<MediaType> supported, MediaType... requested )
43      {
44          super( MediaType.APPLICATION_JSON_TYPE );
45  
46          this.inner = inner;
47          this.supported = supported;
48          this.requested = requested;
49      }
50  
51      @Override
52      protected String serializeValue( String type, Object value )
53      {
54          return inner.serializeValue( type, value );
55      }
56  
57      @Override
58      protected ListWriter serializeList( String type )
59      {
60          return inner.serializeList( type );
61      }
62  
63      @Override
64      protected MappingWriter serializeMapping( String type )
65      {
66          return inner.serializeMapping( type );
67      }
68  
69      @Override
70      protected String complete( ListWriter serializer )
71      {
72          return inner.complete( serializer );
73      }
74  
75      @Override
76      protected String complete( MappingWriter serializer )
77      {
78          return inner.complete( serializer );
79      }
80  
81      @Override
82      public Object readValue( String input )
83      {
84          try
85          {
86              return inner.readValue( input );
87          } catch ( BadInputException e )
88          {
89              throw newMediaTypeNotSupportedException();
90          }
91      }
92  
93      private MediaTypeNotSupportedException newMediaTypeNotSupportedException()
94      {
95          return new MediaTypeNotSupportedException( Response.Status.UNSUPPORTED_MEDIA_TYPE, supported, requested );
96      }
97  
98      @Override
99      public Map<String, Object> readMap( String input ) throws BadInputException
100     {
101         try
102         {
103             return inner.readMap( input );
104         } catch ( BadInputException e )
105         {
106             throw newMediaTypeNotSupportedException();
107         }
108     }
109 
110     @Override
111     public List<Object> readList( String input ) throws BadInputException
112     {
113         try
114         {
115             return inner.readList( input );
116         } catch ( BadInputException e )
117         {
118             throw newMediaTypeNotSupportedException();
119         }
120     }
121 
122     @Override
123     public URI readUri( String input ) throws BadInputException
124     {
125         try
126         {
127             return inner.readUri( input );
128         } catch ( BadInputException e )
129         {
130             throw newMediaTypeNotSupportedException();
131         }
132     }
133 }