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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 javax.servlet.jsp.el.ELException JavaDoc;
59 import java.math.BigDecimal JavaDoc;
60 import java.math.BigInteger JavaDoc;
61
62 /**
63  *
64  * <p>The implementation of the plus operator
65  *
66  * @author Nathan Abramson - Art Technology Group
67  * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
68  **/
69
70 public class PlusOperator
71   extends ArithmeticOperator
72 {
73   //-------------------------------------
74 // Singleton
75 //-------------------------------------
76
77   public static final PlusOperator SINGLETON =
78     new PlusOperator ();
79
80   //-------------------------------------
81 /**
82    *
83    * Constructor
84    **/
85   public PlusOperator ()
86   {
87   }
88
89   //-------------------------------------
90 // Expression methods
91 //-------------------------------------
92 /**
93    *
94    * Returns the symbol representing the operator
95    **/
96   public String JavaDoc getOperatorSymbol () {
97     return "+";
98   }
99
100   //-------------------------------------
101 /**
102    *
103    * Applies the operator to the given double values, returning a double
104    **/
105   public double apply (double pLeft, double pRight) {
106     return pLeft + pRight;
107   }
108   
109   //-------------------------------------
110 /**
111    *
112    * Applies the operator to the given double values, returning a double
113    **/
114   public long apply (long pLeft, long pRight) {
115     return pLeft + pRight;
116   }
117   
118   //-------------------------------------
119
120     /**
121      *
122      * Applies the operator to the given BigDecimal values, returning a
123      * BigDecimal.
124      **/
125     public BigDecimal JavaDoc apply(BigDecimal JavaDoc pLeft, BigDecimal JavaDoc pRight) {
126         return pLeft.add(pRight);
127     }
128
129     //-------------------------------------
130
131     /**
132      *
133      * Applies the operator to the given BigInteger values, returning a
134      * BigInteger.
135      **/
136     public BigInteger JavaDoc apply(BigInteger JavaDoc pLeft, BigInteger JavaDoc pRight) {
137         return pLeft.add(pRight);
138     }
139
140     //-------------------------------------
141 }
142
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