LongAdaptor


1   // Copyright 2004, 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.tapestry.util.io;
16  
17  import org.apache.tapestry.services.DataSqueezer;
18  
19  /**
20   *  Squeezes a {@link Long}. 
21   *
22   *  @author Howard Lewis Ship
23   *
24   **/
25  
26  class LongAdaptor implements ISqueezeAdaptor
27  {
28      private static final String   PREFIX = "l";
29  
30      /**
31       *  Registers using the prefix 'l'.
32       *
33       **/
34  
35      public void register(DataSqueezer squeezer)
36      {
37          squeezer.register(PREFIX, Long  .class, this);
38      }
39  
40      /**
41       *  Invoked <code>toString()</code> on data (which is type {@link Long}),
42       *  and prefixs the result.
43       *
44       **/
45  
46      public String   squeeze(DataSqueezer squeezer, Object   data)
47      {
48          return PREFIX + data.toString();
49      }
50  
51      /**
52       *  Constructs a {@link Long} from the string, after stripping
53       *  the prefix.
54       *
55       **/
56  
57      public Object   unsqueeze(DataSqueezer squeezer, String   string)
58      {
59          return new Long  (string.substring(1));
60      }
61  
62  }
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