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Java > Open Source Codes > org > continuent > sequoia > common > sql > filters > Base64Filter


1 /**
2  * Sequoia: Database clustering technology.
3  * Copyright (C) 2002-2004 French National Institute For Research In Computer
4  * Science And Control (INRIA).
5  * Contact: sequoia@continuent.org
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  * http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  *
19  * Initial developer(s): Nicolas Modrzyk.
20  * Contributor(s): ______________________.
21  */

22
23 package org.continuent.sequoia.common.sql.filters;
24
25 import org.continuent.sequoia.common.stream.encoding.Base64;
26 import org.continuent.sequoia.common.xml.DatabasesXmlTags;
27
28 /**
29  * This class defines a Base64Filter. It is based on the Base64 encoding class
30  * from apache.
31  *
32  * @author <a HREF="mailto:Nicolas.Modrzyk@inria.fr">Nicolas Modrzyk </a>
33  * @version 1.0
34  */

35 public class Base64Filter extends AbstractBlobFilter
36 {
37
38   /**
39    * @see org.continuent.sequoia.common.sql.filters.AbstractBlobFilter#encode(byte[])
40    */

41   public String JavaDoc encode(byte[] data)
42   {
43     try
44     {
45       return Base64.encode(data);
46     }
47     catch (Exception JavaDoc e)
48     {
49       e.printStackTrace();
50       return "";
51     }
52   }
53
54   /**
55    * @see org.continuent.sequoia.common.sql.filters.AbstractBlobFilter#decode(java.lang.String)
56    */

57   public byte[] decode(String JavaDoc data)
58   {
59     try
60     {
61       return Base64.decode(data);
62     }
63     catch (Exception JavaDoc e)
64     {
65       e.printStackTrace();
66       return null;
67     }
68   }
69
70   /**
71    * @see org.continuent.sequoia.common.sql.filters.AbstractBlobFilter#getXml()
72    */

73   public String JavaDoc getXml()
74   {
75     return DatabasesXmlTags.VAL_base64;
76   }
77
78 }
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