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Java > Open Source Codes > org > josql > expressions > ValueExpression


1 /*
2  * Copyright 2004-2005 Gary Bentley
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may
5  * not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 package org.josql.expressions;
16
17 import org.josql.Query;
18 import org.josql.QueryExecutionException;
19
20 public abstract class ValueExpression extends Expression
21 {
22
23     public Object JavaDoc getValue (Object JavaDoc o,
24                 Query q)
25                         throws QueryExecutionException
26     {
27
28     return this.evaluate (o,
29                   q);
30
31     }
32
33     public abstract Object JavaDoc evaluate (Object JavaDoc o,
34                                      Query q)
35                                  throws QueryExecutionException;
36
37 }
38
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