1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 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
24
25 /**
26 * Default implementation of the {@link javax.websocket.Decoder.Text} Message to {@link Integer} decoder
27 */
28 public class IntegerDecoder extends AbstractDecoder implements Decoder.Text<Integer>
29 {
30 public static final IntegerDecoder INSTANCE = new IntegerDecoder();
31
32 @Override
33 public Integer decode(String s) throws DecodeException
34 {
35 try
36 {
37 return Integer.parseInt(s);
38 }
39 catch (NumberFormatException e)
40 {
41 throw new DecodeException(s,"Unable to parse Integer",e);
42 }
43 }
44
45 @Override
46 public boolean willDecode(String s)
47 {
48 if (s == null)
49 {
50 return false;
51 }
52
53 try
54 {
55 Integer.parseInt(s);
56 return true;
57 }
58 catch (NumberFormatException e)
59 {
60 return false;
61 }
62 }
63 }