001    /**
002     * ========================================
003     * JFreeReport : a free Java report library
004     * ========================================
005     *
006     * Project Info:  http://reporting.pentaho.org/
007     *
008     * (C) Copyright 2000-2007, by Object Refinery Limited, 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     * $Id: DefaultDataFlags.java 3525 2007-10-16 11:43:48Z tmorgner $
027     * ------------
028     * (C) Copyright 2000-2005, by Object Refinery Limited.
029     * (C) Copyright 2005-2007, by Pentaho Corporation.
030     */
031    package org.jfree.report.data;
032    
033    import java.util.Date;
034    
035    import org.jfree.report.DataFlags;
036    
037    /**
038     * Creation-Date: 20.02.2006, 16:00:34
039     *
040     * @author Thomas Morgner
041     */
042    public class DefaultDataFlags implements DataFlags
043    {
044      private Object value;
045      private boolean changed;
046      private String name;
047    
048      public DefaultDataFlags(final String name,
049                              final Object value,
050                              final boolean changed)
051      {
052        this.value = value;
053        this.changed = changed;
054        this.name = name;
055      }
056    
057      public boolean isNumeric()
058      {
059        return value instanceof Number;
060      }
061    
062      public boolean isDate()
063      {
064        return value instanceof Date;
065      }
066    
067      public boolean isNull()
068      {
069        return value == null;
070      }
071    
072      public boolean isZero()
073      {
074        if (isNumeric() == false)
075        {
076          return false;
077        }
078        final Number n = (Number) value;
079        return (n.floatValue() == 0);
080      }
081    
082      public boolean isNegative()
083      {
084        if (isNumeric() == false)
085        {
086          return false;
087        }
088        final Number n = (Number) value;
089        return (n.floatValue() < 0);
090      }
091    
092      public boolean isPositive()
093      {
094        if (isNumeric() == false)
095        {
096          return false;
097        }
098        final Number n = (Number) value;
099        return (n.floatValue() > 0);
100      }
101    
102      public boolean isChanged()
103      {
104        return changed;
105      }
106    
107      public Object getValue()
108      {
109        return value;
110      }
111    
112      public String getName()
113      {
114        return name;
115      }
116    
117      public String toString ()
118      {
119        final StringBuffer b = new StringBuffer();
120        b.append("DefaultDataFlags={name=");
121        b.append(name);
122        b.append(", value=");
123        b.append(value);
124        b.append(", changed=");
125        b.append(changed);
126        b.append("}");
127        return b.toString();
128      }
129    }