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Java > Open Source Codes > org > objectstyle > cayenne > exp > ExpressionParameter


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56
57 package org.objectstyle.cayenne.exp;
58
59 import org.objectstyle.cayenne.util.Util;
60
61 /**
62  * Named parameter for paramterized expressions.
63  *
64  * @author Andrei Adamchik
65  */
66 public class ExpressionParameter {
67     protected String JavaDoc name;
68
69     /**
70      * Constructor for ExpressionParam.
71      */
72     public ExpressionParameter(String JavaDoc name) {
73         this.name = name;
74     }
75     
76     /**
77      * Returns the name of the expression parameter.
78      */
79     public String JavaDoc getName() {
80         return name;
81     }
82     
83     public String JavaDoc toString() {
84         return '$' + name;
85     }
86     
87     public boolean equals(Object JavaDoc o) {
88         if(!(o instanceof ExpressionParameter)) {
89             return false;
90         }
91         
92         ExpressionParameter parameter = (ExpressionParameter)o;
93         return Util.nullSafeEquals(name, parameter.name);
94     }
95 }
96
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