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


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56
57 package org.objectstyle.cayenne.exp.parser;
58
59 import org.objectstyle.cayenne.exp.Expression;
60 import org.objectstyle.cayenne.util.ConversionUtil;
61
62 /**
63  * "Not Like" expression.
64  *
65  * @author Andrei Adamchik
66  */
67 public class ASTNotLike extends PatternMatchNode {
68
69     ASTNotLike(int id) {
70         super(id, false);
71     }
72
73     public ASTNotLike() {
74         super(ExpressionParserTreeConstants.JJTNOTLIKE, false);
75     }
76
77     public ASTNotLike(ASTPath path, Object JavaDoc value) {
78         super(ExpressionParserTreeConstants.JJTNOTLIKE, false);
79         jjtAddChild(path, 0);
80         jjtAddChild(new ASTScalar(value), 1);
81     }
82
83     protected Object JavaDoc evaluateNode(Object JavaDoc o) throws Exception JavaDoc {
84         int len = jjtGetNumChildren();
85         if (len != 2) {
86             return Boolean.FALSE;
87         }
88
89         String JavaDoc s1 = ConversionUtil.toString(evaluateChild(0, o));
90         if (s1 == null) {
91             return Boolean.FALSE;
92         }
93
94         return matchPattern(s1) ? Boolean.FALSE : Boolean.TRUE;
95     }
96
97     /**
98      * Creates a copy of this expression node, without copying children.
99      */
100     public Expression shallowCopy() {
101         return new ASTNotLike(id);
102     }
103
104     protected String JavaDoc getExpressionOperator(int index) {
105         return "not like";
106     }
107
108     public int getType() {
109         return Expression.NOT_LIKE;
110     }
111 }
112
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