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Java > Open Source Codes > com > sun > org > apache > xerces > internal > impl > dv > xs > Base64BinaryDV


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 2001, 2002 The Apache Software Foundation. All rights
6  * reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "Xerces" and "Apache Software Foundation" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
31  *
32  * 5. Products derived from this software may not be called "Apache",
33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  * ====================================================================
49  *
50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation and was
52  * originally based on software copyright (c) 2001, International
53  * Business Machines, Inc., http://www.apache.org. For more
54  * information on the Apache Software Foundation, please see
55  * <http://www.apache.org/>.
56  */

57
58 package com.sun.org.apache.xerces.internal.impl.dv.xs;
59
60 import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException;
61 import com.sun.org.apache.xerces.internal.impl.dv.ValidationContext;
62 import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
63
64 /**
65  * Represent the schema type "base64Binary"
66  *
67  * @author Neeraj Bajaj, Sun Microsystems, inc.
68  * @author Sandy Gao, IBM
69  *
70  * @version $Id: Base64BinaryDV.java,v 1.4 2002/11/18 23:10:10 sandygao Exp $
71  */

72 public class Base64BinaryDV extends TypeValidator {
73
74     public short getAllowedFacets(){
75         return (XSSimpleTypeDecl.FACET_LENGTH | XSSimpleTypeDecl.FACET_MINLENGTH | XSSimpleTypeDecl.FACET_MAXLENGTH | XSSimpleTypeDecl.FACET_PATTERN | XSSimpleTypeDecl.FACET_ENUMERATION | XSSimpleTypeDecl.FACET_WHITESPACE );
76     }
77
78     public Object JavaDoc getActualValue(String JavaDoc content, ValidationContext context) throws InvalidDatatypeValueException {
79         byte[] decoded = Base64.decode(content);
80         if (decoded == null)
81             throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object JavaDoc[]{content, "base64Binary"});
82
83         return new XBase64(decoded);
84     }
85
86     // length of a binary type is the number of bytes
87
public int getDataLength(Object JavaDoc value) {
88         return ((XBase64)value).length();
89     }
90
91     /**
92      * represent base64 data
93      */

94     private static final class XBase64 {
95         // actually data stored in a byte array
96
final byte[] data;
97         // canonical representation of the data
98
private String JavaDoc canonical;
99         public XBase64(byte[] data) {
100             this.data = data;
101         }
102         public synchronized String JavaDoc toString() {
103             if (canonical == null) {
104                 canonical = Base64.encode(data);
105             }
106             return canonical;
107         }
108         public int length() {
109             return data.length;
110         }
111         public boolean equals(Object JavaDoc obj) {
112             if (!(obj instanceof XBase64))
113                 return false;
114             byte[] odata = ((XBase64)obj).data;
115             int len = data.length;
116             if (len != odata.length)
117                 return false;
118             for (int i = 0; i < len; i++) {
119                 if (data[i] != odata[i])
120                     return false;
121             }
122             return true;
123         }
124     }
125 } // class Base64BinaryDV
126
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