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Java > Open Source Codes > com > sun > org > apache > xerces > internal > impl > dv > dtd > ListDatatypeValidator


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 1999-2002 The Apache Software Foundation. All rights
6  * reserved.
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8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
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13  * notice, this list of conditions and the following disclaimer.
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16  * notice, this list of conditions and the following disclaimer in
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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
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29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
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33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
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44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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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) 1999, International
53  * Business Machines, Inc., http://www.apache.org. For more
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55  * <http://www.apache.org/>.
56  */

57
58 package com.sun.org.apache.xerces.internal.impl.dv.dtd;
59
60 import com.sun.org.apache.xerces.internal.impl.dv.*;
61 import java.util.StringTokenizer JavaDoc;
62
63 /**
64  * For list types: ENTITIES, IDREFS, NMTOKENS.
65  *
66  * @author Jeffrey Rodriguez, IBM
67  * @author Sandy Gao, IBM
68  *
69  * @version $Id: ListDatatypeValidator.java,v 1.5 2003/08/18 18:05:19 mrglavas Exp $
70  */

71 public class ListDatatypeValidator implements DatatypeValidator {
72
73     // the type of items in the list
74
DatatypeValidator fItemValidator;
75
76     // construct a list datatype validator
77
public ListDatatypeValidator(DatatypeValidator itemDV) {
78         fItemValidator = itemDV;
79     }
80
81     /**
82      * Checks that "content" string is valid.
83      * If invalid a Datatype validation exception is thrown.
84      *
85      * @param content the string value that needs to be validated
86      * @param context the validation context
87      * @throws InvalidDatatypeException if the content is
88      * invalid according to the rules for the validators
89      * @see InvalidDatatypeValueException
90      */

91     public void validate(String JavaDoc content, ValidationContext context) throws InvalidDatatypeValueException {
92
93         StringTokenizer JavaDoc parsedList = new StringTokenizer JavaDoc(content," ");
94         int numberOfTokens = parsedList.countTokens();
95         if (numberOfTokens == 0) {
96             throw new InvalidDatatypeValueException("EmptyList", null);
97         }
98         //Check each token in list against base type
99
while (parsedList.hasMoreTokens()) {
100             this.fItemValidator.validate(parsedList.nextToken(), context);
101         }
102     }
103
104 }
105
106
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