svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / function / operator / RegExpOperator.java @ 44139
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package org.gvsig.expressionevaluator.impl.function.operator; |
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import java.util.Objects; |
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import java.util.regex.Matcher; |
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import java.util.regex.Pattern; |
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import org.gvsig.expressionevaluator.Function; |
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import org.gvsig.expressionevaluator.Interpreter; |
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public class RegExpOperator extends AbstractBinaryOperator { |
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public static final String NAME = "~"; |
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public RegExpOperator() {
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super(Function.GROUP_BOOLEAN, NAME);
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} |
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@Override
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public boolean allowConstantFolding() { |
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return true; |
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} |
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@Override
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public Object call(Interpreter interpreter, Object op1, Object op2) { |
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String re = Objects.toString(op2, ""); |
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Pattern exp = (Pattern) interpreter.getCache().get(this.getClass(), re); |
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if( exp == null ) { |
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exp = Pattern.compile(re);
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interpreter.getCache().put(this.getClass(), re, exp);
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} |
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Matcher m = exp.matcher(Objects.toString(op1,"")); |
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if( m == null ) { |
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return false; |
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} |
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return m.matches();
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} |
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} |