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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: TodayFunction.java,v 1.4 2007/05/21 18:57:59 mimil Exp $ 28: * ------------ 29: * (C) Copyright 2006-2007, by Pentaho Corporation. 30: */ 31: 32: package org.jfree.formula.function.datetime; 33: 34: import java.util.Date; 35: 36: import org.jfree.formula.EvaluationException; 37: import org.jfree.formula.FormulaContext; 38: import org.jfree.formula.LocalizationContext; 39: import org.jfree.formula.function.Function; 40: import org.jfree.formula.function.ParameterCallback; 41: import org.jfree.formula.lvalues.TypeValuePair; 42: import org.jfree.formula.typing.coretypes.DateTimeType; 43: import org.jfree.formula.util.DateUtil; 44: 45: /** 46: * Todo: Document me! 47: * 48: * @author Thomas Morgner 49: * @since 23.03.2007 50: */ 51: public class TodayFunction implements Function 52: { 53: public TodayFunction() 54: { 55: } 56: 57: public String getCanonicalName() 58: { 59: return "TODAY"; 60: } 61: 62: public TypeValuePair evaluate(final FormulaContext context, 63: final ParameterCallback parameters) 64: throws EvaluationException 65: { 66: final LocalizationContext localizationContext = context.getLocalizationContext(); 67: final Date now = DateUtil.now(localizationContext); 68: 69: final Date date = DateUtil.normalizeDate(now, DateTimeType.DATE_TYPE); 70: return new TypeValuePair(DateTimeType.DATE_TYPE, date); 71: } 72: }