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Java > Open Source Codes > org > apache > taglibs > standard > tei > XmlParseTEI


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.taglibs.standard.tei;
18
19 import javax.servlet.jsp.tagext.TagData JavaDoc;
20 import javax.servlet.jsp.tagext.TagExtraInfo JavaDoc;
21
22 /**
23  * <p>An implementation of TagExtraInfo that implements validation for
24  * <x:parse>'s attributes</p>
25  *
26  * @author Shawn Bayern
27  */
28 public class XmlParseTEI extends TagExtraInfo JavaDoc {
29
30     final private static String JavaDoc VAR = "var";
31     final private static String JavaDoc VAR_DOM = "varDom";
32     final private static String JavaDoc SCOPE = "scope";
33     final private static String JavaDoc SCOPE_DOM = "scopeDom";
34
35     public boolean isValid(TagData JavaDoc us) {
36     // must have no more than one of VAR and VAR_DOM ...
37 if (Util.isSpecified(us, VAR) && Util.isSpecified(us, VAR_DOM))
38         return false;
39
40     // ... and must have no less than one of VAR and VAR_DOM
41 if (!(Util.isSpecified(us, VAR) || Util.isSpecified(us, VAR_DOM)))
42         return false;
43
44     // When either 'scope' is specified, its 'var' must be specified
45 if (Util.isSpecified(us, SCOPE) && !Util.isSpecified(us, VAR))
46         return false;
47     if (Util.isSpecified(us, SCOPE_DOM) && !Util.isSpecified(us, VAR_DOM))
48         return false;
49
50         return true;
51     }
52
53 }
54
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