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Java > Open Source Codes > org > apache > taglibs > standard > lang > jstl > UnaryOperator


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.lang.jstl;
18
19 /**
20  *
21  * <p>This is the superclass for all unary operators
22  *
23  * @author Nathan Abramson - Art Technology Group
24  * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: pierred $
25  **/

26
27 public abstract class UnaryOperator
28 {
29   //-------------------------------------
30
/**
31    *
32    * Constructor
33    **/

34   public UnaryOperator ()
35   {
36   }
37
38   //-------------------------------------
39
// Expression methods
40
//-------------------------------------
41
/**
42    *
43    * Returns the symbol representing the operator
44    **/

45   public abstract String JavaDoc getOperatorSymbol ();
46
47   //-------------------------------------
48
/**
49    *
50    * Applies the operator to the given value
51    **/

52   public abstract Object JavaDoc apply (Object JavaDoc pValue,
53                 Object JavaDoc pContext,
54                 Logger pLogger)
55     throws ELException;
56
57   //-------------------------------------
58
}
59
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