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1: /** 2: * ========================================= 3: * LibFormula : a free Java formula library 4: * ========================================= 5: * 6: * Project Info: http://reporting.pentaho.org/libformula/ 7: * 8: * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors. 9: * 10: * This library is free software; you can redistribute it and/or modify it under the terms 11: * of the GNU Lesser General Public License as published by the Free Software Foundation; 12: * either version 2.1 of the License, or (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16: * See the GNU Lesser General Public License for more details. 17: * 18: * You should have received a copy of the GNU Lesser General Public License along with this 19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 20: * Boston, MA 02111-1307, USA. 21: * 22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 23: * in the United States and other countries.] 24: * 25: * 26: * ------------ 27: * $Id: IsNonTextFunction.java,v 1.1 2007/05/17 23:32:12 mimil Exp $ 28: * ------------ 29: * (C) Copyright 2006-2007, by Pentaho Corporation. 30: */ 31: package org.jfree.formula.function.information; 32: 33: import org.jfree.formula.EvaluationException; 34: import org.jfree.formula.FormulaContext; 35: import org.jfree.formula.function.ParameterCallback; 36: import org.jfree.formula.lvalues.TypeValuePair; 37: import org.jfree.formula.typing.coretypes.LogicalType; 38: 39: /** 40: * This function retruns false if the given value is of type Text. 41: * 42: * @author Cedric Pronzato 43: * 44: */ 45: public class IsNonTextFunction extends IsTextFunction 46: { 47: private static final TypeValuePair RETURN_TRUE = new TypeValuePair(LogicalType.TYPE, Boolean.TRUE); 48: private static final TypeValuePair RETURN_FALSE = new TypeValuePair(LogicalType.TYPE, Boolean.FALSE); 49: 50: public IsNonTextFunction() 51: { 52: } 53: 54: public TypeValuePair evaluate(FormulaContext context, ParameterCallback parameters) throws EvaluationException 55: { 56: final TypeValuePair typeValuePair = super.evaluate(context, parameters); 57: if(typeValuePair.getValue().equals(Boolean.TRUE)) 58: { 59: return RETURN_FALSE; 60: } 61: else 62: { 63: return RETURN_TRUE; 64: } 65: } 66: 67: public String getCanonicalName() 68: { 69: return "ISNONTEXT"; 70: } 71: 72: }