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1
56 package org.objectstyle.cayenne.exp.parser;
57
58 import org.objectstyle.cayenne.exp.Expression;
59 import org.objectstyle.cayenne.util.ConversionUtil;
60
61
67 public class ASTBetween extends ConditionNode {
68
69 ASTBetween(int id) {
70 super(id);
71 }
72
73 public ASTBetween() {
74 super(ExpressionParserTreeConstants.JJTBETWEEN);
75 }
76
77 public ASTBetween(ASTPath path, Object  value1, Object value2) {
78 super(ExpressionParserTreeConstants.JJTBETWEEN);
79 jjtAddChild(path, 0);
80 jjtAddChild(new ASTScalar(value1), 1);
81 jjtAddChild(new ASTScalar(value2), 2);
82 }
83
84 protected Object evaluateNode(Object o) throws Exception {
85 int len = jjtGetNumChildren();
86 if (len != 3) {
87 return Boolean.FALSE;
88 }
89
90 Comparable c1 = ConversionUtil.toComparable(evaluateChild(0, o));
91
92 if (c1 == null) {
93 return Boolean.FALSE;
94 }
95
96 Comparable c2 = ConversionUtil.toComparable(evaluateChild(1, o));
97 if (c2 == null) {
98 return Boolean.FALSE;
99 }
100
101 Comparable c3 = ConversionUtil.toComparable(evaluateChild(2, o));
102 if (c3 == null) {
103 return Boolean.FALSE;
104 }
105
106 return c1.compareTo(c2) >= 0
107 && c1.compareTo(c3) <= 0 ? Boolean.TRUE : Boolean.FALSE;
108 }
109
110
113 public Expression shallowCopy() {
114 return new ASTBetween(id);
115 }
116
117 protected String getExpressionOperator(int index) {
118 return (index == 2) ? "and" : "between";
119 }
120
121 public int getType() {
122 return Expression.BETWEEN;
123 }
124 }
125 |
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