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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: NowFunction.java 2847 2007-05-21 18:57:59Z mimil $ 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: * Return the serial number of the current date and time. This returns the current day and time serial number, using the 47: * current locale. If you want only the serial number of the current day, use TODAY. 48: * 49: * @author Thomas Morgner 50: * @since 23.03.2007 51: */ 52: public class NowFunction implements Function 53: { 54: public NowFunction() 55: { 56: } 57: 58: public String getCanonicalName() 59: { 60: return "NOW"; 61: } 62: 63: public TypeValuePair evaluate(final FormulaContext context, 64: final ParameterCallback parameters) 65: throws EvaluationException 66: { 67: final LocalizationContext localizationContext = context.getLocalizationContext(); 68: final Date now = DateUtil.now(localizationContext); 69: 70: final Date date = DateUtil.normalizeDate(now, DateTimeType.DATETIME_TYPE); 71: return new TypeValuePair(DateTimeType.DATETIME_TYPE, date); 72: } 73: }