001/* ========================================================================
002 * JCommon : a free general purpose class library for the Java(tm) platform
003 * ========================================================================
004 *
005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006 * 
007 * Project Info:  http://www.jfree.org/jcommon/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it 
010 * under the terms of the GNU Lesser General Public License as published by 
011 * the Free Software Foundation; either version 2.1 of the License, or 
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but 
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022 * USA.  
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025 * in the United States and other countries.]
026 * 
027 * --------------------------
028 * LongObjectDescription.java
029 * --------------------------
030 * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
031 *
032 * Original Author:  Thomas Morgner;
033 * Contributor(s):   David Gilbert (for Object Refinery Limited);
034 *
035 * $Id: LongObjectDescription.java,v 1.3 2005/11/14 11:03:00 mungady Exp $
036 *
037 * Changes (from 19-Feb-2003)
038 * -------------------------
039 * 19-Feb-2003 : Added standard header and Javadocs (DG);
040 * 29-Apr-2003 : Distilled from the JFreeReport project and moved into JCommon
041 *
042 */
043
044package org.jfree.xml.factory.objects;
045
046/**
047 * An object-description for a <code>Long</code> object.
048 *
049 * @author Thomas Morgner
050 */
051public class LongObjectDescription extends AbstractObjectDescription {
052
053    /**
054     * Creates a new object description.
055     */
056    public LongObjectDescription() {
057        super(Long.class);
058        setParameterDefinition("value", String.class);
059    }
060
061    /**
062     * Creates an object based on this description.
063     *
064     * @return The object.
065     */
066    public Object createObject() {
067        final String o = (String) getParameter("value");
068        return Long.valueOf(o);
069    }
070
071    /**
072     * Sets the parameters of this description object to match the supplied object.
073     *
074     * @param o  the object (should be an instance of <code>Long</code>).
075     *
076     * @throws ObjectFactoryException if the object is not an instance of <code>Long</code>.
077     */
078    public void setParameterFromObject(final Object o) throws ObjectFactoryException {
079        if (!(o instanceof Long)) {
080            throw new ObjectFactoryException("The given object is no java.lang.Long.");
081        }
082
083        setParameter("value", String.valueOf(o));
084    }
085
086    /**
087     * Tests for equality.
088     * 
089     * @param o  the object to test.
090     * 
091     * @return A boolean.
092     */
093    public boolean equals(final Object o) {
094        if (this == o) {
095            return true;
096        }
097        if (!(o instanceof AbstractObjectDescription)) {
098            return false;
099        }
100
101        final AbstractObjectDescription abstractObjectDescription = (AbstractObjectDescription) o;
102
103        if (Long.TYPE.equals(abstractObjectDescription.getObjectClass())) {
104            return true;
105        }
106        if (Long.class.equals(abstractObjectDescription.getObjectClass())) {
107            return true;
108        }
109        return false;
110    }
111    
112    /**
113     * Returns a hash code.
114     * 
115     * @return A hash code.
116     */
117    public int hashCode() {
118        return getObjectClass().hashCode();
119    }
120
121}