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Java > Open Source Codes > org > apache > cayenne > exp > parser > ASTNotLike


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19
20
21 package org.apache.cayenne.exp.parser;
22
23 import org.apache.cayenne.exp.Expression;
24 import org.apache.cayenne.util.ConversionUtil;
25
26 /**
27  * "Not Like" expression.
28  *
29  * @author Andrus Adamchik
30  */
31 public class ASTNotLike extends PatternMatchNode {
32
33     ASTNotLike(int id) {
34         super(id, false);
35     }
36
37     public ASTNotLike() {
38         super(ExpressionParserTreeConstants.JJTNOTLIKE, false);
39     }
40
41     public ASTNotLike(ASTPath path, Object JavaDoc value) {
42         super(ExpressionParserTreeConstants.JJTNOTLIKE, false);
43         jjtAddChild(path, 0);
44         jjtAddChild(new ASTScalar(value), 1);
45     }
46
47     protected Object JavaDoc evaluateNode(Object JavaDoc o) throws Exception JavaDoc {
48         int len = jjtGetNumChildren();
49         if (len != 2) {
50             return Boolean.FALSE;
51         }
52
53         String JavaDoc s1 = ConversionUtil.toString(evaluateChild(0, o));
54         if (s1 == null) {
55             return Boolean.FALSE;
56         }
57
58         return matchPattern(s1) ? Boolean.FALSE : Boolean.TRUE;
59     }
60
61     /**
62      * Creates a copy of this expression node, without copying children.
63      */
64     public Expression shallowCopy() {
65         return new ASTNotLike(id);
66     }
67
68     protected String JavaDoc getExpressionOperator(int index) {
69         return "not like";
70     }
71
72     public int getType() {
73         return Expression.NOT_LIKE;
74     }
75 }
76
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