root / trunk / libraries / libExpressions / src / main / java / org / gvsig / operators / IsNumber.java @ 23299
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package org.gvsig.operators; |
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import org.apache.bsf.BSFException; |
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import org.apache.bsf.BSFManager; |
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import org.gvsig.baseclasses.AbstractOperator; |
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import org.gvsig.baseclasses.IOperator; |
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import org.gvsig.expresions.EvalOperatorsTask; |
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/**
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* @author Vicente Caballero Navarro
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*/
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public class IsNumber extends AbstractOperator{ |
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public String addText(String s) { |
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return toString()+"("+s+")"; |
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} |
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public String toString() { |
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return "isNumber"; |
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} |
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public void eval(BSFManager interpreter) throws BSFException { |
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// interpreter.eval(ExpressionFieldExtension.BEANSHELL,null,-1,-1,"boolean isNumber (String value){try{java.lang.Double.parseDouble(value);}catch(java.lang.NumberFormatException e){return false;}return true;};");
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interpreter.exec(EvalOperatorsTask.JYTHON,null,-1,-1,"def isNumber(value):\n" + |
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" import java.lang.Double\n" +
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" import java.lang.NumberFormatException\n" +
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" try:\n" +
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" java.lang.Double.parseDouble(value)\n" +
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" except java.lang.NumberFormatException:\n" +
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" return 0==1 #false\n" +
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" return 1==1 #true\n");
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} |
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public boolean isEnable() { |
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return (getType()==IOperator.STRING);
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} |
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public String getDescription() { |
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return "parameter" + ": " + |
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"string_value" + "\n" + |
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"returns" + ": " + |
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"boolean_value" + "\n" + |
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"description" + ": " + |
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"Returns true if the string parameter is a number.";
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} |
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} |