001    /**
002     * =========================================
003     * LibFormula : a free Java formula library
004     * =========================================
005     *
006     * Project Info:  http://reporting.pentaho.org/libformula/
007     *
008     * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     *
026     * ------------
027     * $Id: DateTimeType.java 3522 2007-10-16 10:56:57Z tmorgner $
028     * ------------
029     * (C) Copyright 2006-2007, by Pentaho Corporation.
030     */
031    package org.jfree.formula.typing.coretypes;
032    
033    import org.jfree.formula.typing.DefaultType;
034    import org.jfree.formula.typing.Type;
035    
036    /**
037     * This class regroups all related Types to date and time values.
038     * 
039     * @author Cedric Pronzato
040     */
041    public class DateTimeType extends DefaultType
042    {
043      /**
044       * This Type represents an instant in time described by a date and a time of
045       * day.
046       */
047      public static final DateTimeType DATETIME_TYPE;
048    
049      /**
050       * This Type represents an instant in time described by a date only.
051       */
052      public static final DateTimeType DATE_TYPE;
053    
054      /**
055       * This Type represents an instant in time described by a time of day only.
056       */
057      public static final DateTimeType TIME_TYPE;
058    
059      static
060      {
061        DATE_TYPE = new DateTimeType();
062        DATE_TYPE.addFlag(Type.DATE_TYPE);
063        DATE_TYPE.lock();
064    
065        TIME_TYPE = new DateTimeType();
066        TIME_TYPE.addFlag(Type.TIME_TYPE);
067        TIME_TYPE.lock();
068    
069        DATETIME_TYPE = new DateTimeType();
070        DATETIME_TYPE.addFlag(Type.DATETIME_TYPE);
071        DATETIME_TYPE.lock();
072      }
073    
074      protected DateTimeType()
075      {
076        addFlag(Type.NUMERIC_TYPE);
077        addFlag(Type.SCALAR_TYPE);
078      }
079    }