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Java > Open Source Codes > com > mockobjects > constraint > And


1 /* Copyright (c) 2002 B13media Ltd. All rights reserved.
2  *
3  * Created on February 10, 2002, 11:49 PM
4  */
5 package com.mockobjects.constraint;
6
7 /** Calculates the logical conjunction of two constraints.
8  * Evaluation is shortcut, so that the second constraint is not
9  * called if the first constraint returns <code>false</code>.
10  */
11 public class And
12     implements Constraint
13 {
14     Constraint _p1, _p2;
15     
16     public And(Constraint p1, Constraint p2) {
17         _p1 = p1;
18         _p2 = p2;
19     }
20     
21     public boolean eval( Object JavaDoc o ) {
22         return _p1.eval(o) && _p2.eval(o);
23     }
24     
25     public String JavaDoc toString() {
26         return "(" + _p1 + " and " + _p2 + ")";
27     }
28 }
29
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