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Java > Open Source Codes > org > apache > slide > search > basic > expression > IsCollectionExpression


1 /*
2  * $Header: /home/cvs/jakarta-slide/src/share/org/apache/slide/search/basic/expression/IsCollectionExpression.java,v 1.4 2004/07/28 09:34:50 ib Exp $
3  * $Revision: 1.4 $
4  * $Date: 2004/07/28 09:34:50 $
5  *
6  * ====================================================================
7  *
8  * Copyright 1999-2002 The Apache Software Foundation
9  *
10  * Licensed under the Apache License, Version 2.0 (the "License");
11  * you may not use this file except in compliance with the License.
12  * You may obtain a copy of the License at
13  *
14  * http://www.apache.org/licenses/LICENSE-2.0
15  *
16  * Unless required by applicable law or agreed to in writing, software
17  * distributed under the License is distributed on an "AS IS" BASIS,
18  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19  * See the License for the specific language governing permissions and
20  * limitations under the License.
21  *
22  */
23
24 package org.apache.slide.search.basic.expression;
25
26 import org.apache.slide.search.InvalidQueryException;
27 import org.apache.slide.search.basic.ComparableResourcesPool;
28 import org.apache.slide.search.basic.Literals;
29 import org.jdom.Element;
30
31 /**
32  * Represents an is-collection expression.
33  *
34  * @version $Revision: 1.4 $
35  */
36 public class IsCollectionExpression extends CheckResourceTypeExpression {
37     
38     /**
39      * Creates an is-collection expression
40      *
41      * @param e jdom element, that describes the expression
42      * @param requestedResourcesPool the pool of resources to apply the expression to.
43      */
44     public IsCollectionExpression (Element e, ComparableResourcesPool requestedResourcesPool) throws InvalidQueryException {
45         super(e, requestedResourcesPool);
46         comparedProperty.setLiteral ("collection");
47     }
48        
49     /**
50      * For debugging purpose.
51      *
52      * @return This expression as string
53      *
54      */
55     public String JavaDoc toString () {
56         return (Literals.ISCOLLECTION);
57     }
58 }
59
60
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