1 //
2 // ========================================================================
3 // Copyright (c) 1995-2013 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.websocket.jsr356.decoders;
20
21 import javax.websocket.DecodeException;
22 import javax.websocket.Decoder;
23 import javax.websocket.Decoder.Text;
24
25
26 /**
27 * Default implementation of the {@link Text} Message to {@link Integer} decoder
28 */
29 public class IntegerDecoder extends AbstractDecoder implements Decoder.Text<Integer>
30 {
31 public static final IntegerDecoder INSTANCE = new IntegerDecoder();
32
33 @Override
34 public Integer decode(String s) throws DecodeException
35 {
36 try
37 {
38 return Integer.parseInt(s);
39 }
40 catch (NumberFormatException e)
41 {
42 throw new DecodeException(s,"Unable to parse Integer",e);
43 }
44 }
45
46 @Override
47 public boolean willDecode(String s)
48 {
49 if (s == null)
50 {
51 return false;
52 }
53
54 try
55 {
56 Integer.parseInt(s);
57 return true;
58 }
59 catch (NumberFormatException e)
60 {
61 return false;
62 }
63 }
64 }