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Java > Open Source Codes > org > apache > slide > search > basic > IBasicExpression


1 /*
2  * $Header: /home/cvs/jakarta-slide/src/share/org/apache/slide/search/basic/IBasicExpression.java,v 1.5 2004/07/28 09:35:01 ib Exp $
3  * $Revision: 1.5 $
4  * $Date: 2004/07/28 09:35:01 $
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;
25
26 import org.apache.slide.search.SearchException;
27
28 /**
29  * An IBasicExpression represents an executable part of the expression tree.
30  * Different stores may have different implementations.
31  *
32  * @version $Revision: 1.5 $
33  */
34 public interface IBasicExpression {
35     
36     /**
37      * Method execute
38      *
39      * @return a Set of RequestedResource objects
40      *
41      * @throws SearchException
42      *
43      */
44     IBasicResultSet execute () throws SearchException;
45     
46     /**
47      * Method getFactory
48      *
49      * @return the factory which was used to create this expression
50      *
51      */
52     IBasicExpressionFactory getFactory ();
53     
54     /**
55      * Method setFactory
56      *
57      * @param factory the factory which was used to create this expression
58      *
59      */
60     void setFactory (IBasicExpressionFactory factory);
61     
62 }
63
64
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