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1
56 package org.objectstyle.cayenne.exp.parser;
57
58 import org.apache.oro.text.perl.Perl5Util;
59 import org.objectstyle.cayenne.util.Util;
60
61
68 public abstract class PatternMatchNode extends ConditionNode {
69
70 static final Perl5Util regexUtil = new Perl5Util();
73
74 protected String  pattern;
75 protected boolean patternCompiled;
76 protected boolean ignoringCase;
77
78 PatternMatchNode(int i, boolean ignoringCase) {
79 super(i);
80 this.ignoringCase = ignoringCase;
81 }
82
83 protected boolean matchPattern(String string) {
84 return (string != null) ? regexUtil.match(getPattern(), string) : false;
85 }
86
87 protected String getPattern() {
88 if (!patternCompiled) {
90 pattern = null;
91 patternCompiled = true;
92
93 if (jjtGetNumChildren() < 2) {
94 return null;
95 }
96
97 ASTScalar patternNode = (ASTScalar) jjtGetChild(1);
99 if (patternNode == null) {
100 return null;
101 }
102
103 String srcPattern = (String ) patternNode.getValue();
104 if (srcPattern == null) {
105 return null;
106 }
107
108 pattern = Util.sqlPatternToRegex(srcPattern, ignoringCase);
109 }
110
111 return pattern;
112 }
113
114 public void jjtAddChild(Node n, int i) {
115 if (i == 1) {
117 patternCompiled = false;
118 }
119
120 super.jjtAddChild(n, i);
121 }
122 }
123 |
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