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


1 /*
2  * $Header: /home/cvs/jakarta-slide/src/share/org/apache/slide/search/basic/expression/OrExpression.java,v 1.4 2004/07/28 09:34:49 ib Exp $
3  * $Revision: 1.4 $
4  * $Date: 2004/07/28 09:34:49 $
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 java.util.Collection JavaDoc;
27
28 import org.apache.slide.search.InvalidQueryException;
29 import org.apache.slide.search.basic.IBasicResultSet;
30 import org.apache.slide.search.basic.Literals;
31 import org.jdom.Element;
32
33 /**
34  * Represents an OR expression.
35  *
36  * @version $Revision: 1.4 $
37  */
38 public class OrExpression extends MergeExpression {
39     
40     
41     /**
42      * Creates an AND expression according to Element e
43      *
44      * @param e jdom element, that describes the expression
45      * @param expressionsToMerge a Collection of IBasicExpressions to merge.
46      */
47     public OrExpression (Element e, Collection JavaDoc expressionsToMerge) throws InvalidQueryException {
48         super (e, expressionsToMerge);
49     }
50     
51     protected void merge (IBasicResultSet theOtherResultSet) {
52         resultSet.addAll (theOtherResultSet);
53     }
54         
55     
56     /**
57      * String representation for debugging purposes.
58      *
59      * @return this expression as String
60      */
61     public String JavaDoc toString () {
62         return super.toString (Literals.OR);
63     }
64
65 }
66
67
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