01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: package org.apache.xerces.impl.dv.dtd;
19:
20: import org.apache.xerces.impl.dv.*;
21: import java.util.StringTokenizer;
22:
23: /**
24: * For list types: ENTITIES, IDREFS, NMTOKENS.
25: *
26: * @xerces.internal
27: *
28: * @author Jeffrey Rodriguez, IBM
29: * @author Sandy Gao, IBM
30: *
31: * @version $Id: ListDatatypeValidator.java 572061 2007-09-02 18:05:06Z mrglavas $
32: */
33: public class ListDatatypeValidator implements DatatypeValidator {
34:
35: // the type of items in the list
36: final DatatypeValidator fItemValidator;
37:
38: // construct a list datatype validator
39: public ListDatatypeValidator(DatatypeValidator itemDV) {
40: fItemValidator = itemDV;
41: }
42:
43: /**
44: * Checks that "content" string is valid.
45: * If invalid a Datatype validation exception is thrown.
46: *
47: * @param content the string value that needs to be validated
48: * @param context the validation context
49: * @throws InvalidDatatypeException if the content is
50: * invalid according to the rules for the validators
51: * @see InvalidDatatypeValueException
52: */
53: public void validate(String content, ValidationContext context)
54: throws InvalidDatatypeValueException {
55:
56: StringTokenizer parsedList = new StringTokenizer(content, " ");
57: int numberOfTokens = parsedList.countTokens();
58: if (numberOfTokens == 0) {
59: throw new InvalidDatatypeValueException("EmptyList", null);
60: }
61: //Check each token in list against base type
62: while (parsedList.hasMoreTokens()) {
63: this.fItemValidator.validate(parsedList.nextToken(),
64: context);
65: }
66: }
67:
68: }
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