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14 package org.jacorb.trading.constraint;
15
16 import java.io.*;
17
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20 public class OrNode extends ExprNode
21 {
22 private ExprNode m_left;
23 private ExprNode m_right;
24
25
26 private OrNode()
27 {
28 }
29
30
31 public OrNode(ExprNode left, ExprNode right)
32 {
33 m_left = left;
34 m_right = right;
35
36 setType(new ValueType(ValueType.BOOLEAN));
37 }
38
39
40 public void print(PrintStream ps)
41 {
42 ps.println("OrNode: type = " + getType());
43 ps.println("Left node:");
44 m_left.print(ps);
45 ps.println("Right node:");
46 m_right.print(ps);
47 }
48
49
50 public Value evaluate(PropertySource source)
51 throws MissingPropertyException
52 {
53 Value result = null;
54
55 int id = getType().getId();
56
57 Value left, right;
58
59 left = m_left.evaluate(source);
60 Boolean  l = (Boolean )left.getValue();
61
62 if (! l.booleanValue()) {
65 right = m_right.evaluate(source);
66 Boolean r = (Boolean )right.getValue();
67 result = ValueFactory.createBoolean(r.booleanValue());
68 }
69 else
70 result = ValueFactory.createBoolean(true);
71
72 return result;
73 }
74 }
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