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1 /*
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22  * Apache Software Foundation (http://www.apache.org/)."
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55
56 package org.apache.commons.el;
57
58 import java.math.BigDecimal JavaDoc;
59 import java.math.BigInteger JavaDoc;
60
61 /**
62  *
63  * <p>The implementation of the minus operator
64  *
65  * @author Nathan Abramson - Art Technology Group
66  * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
67  **/
68
69 public class MinusOperator
70   extends ArithmeticOperator
71 {
72   //-------------------------------------
73 // Singleton
74 //-------------------------------------
75
76   public static final MinusOperator SINGLETON =
77     new MinusOperator ();
78
79   //-------------------------------------
80 /**
81    *
82    * Constructor
83    **/
84   public MinusOperator ()
85   {
86   }
87
88   //-------------------------------------
89 // Expression methods
90 //-------------------------------------
91 /**
92    *
93    * Returns the symbol representing the operator
94    **/
95   public String JavaDoc getOperatorSymbol () {
96     return "-";
97   }
98
99   //-------------------------------------
100 /**
101    *
102    * Applies the operator to the given double values, returning a double
103    **/
104   public double apply (double pLeft, double pRight) {
105     return pLeft - pRight;
106   }
107   
108   //-------------------------------------
109 /**
110    *
111    * Applies the operator to the given double values, returning a double
112    **/
113   public long apply (long pLeft, long pRight) {
114     return pLeft - pRight;
115   }
116   
117   //-------------------------------------
118
119     /**
120      *
121      * Applies the operator to the given BigDecimal values, returning a BigDecimal.
122      **/
123     public BigDecimal JavaDoc apply(BigDecimal JavaDoc pLeft, BigDecimal JavaDoc pRight) {
124         return pLeft.subtract(pRight);
125     }
126
127     //-------------------------------------
128
129     /**
130      *
131      * Applies the operator to the given BigInteger values, returning a BigInteger.
132      **/
133     public BigInteger JavaDoc apply(BigInteger JavaDoc pLeft, BigInteger JavaDoc pRight) {
134         return pLeft.subtract(pRight);
135     }
136
137     //-------------------------------------
138 }
139
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