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 * ArrayClassFactory.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: ArrayClassFactory.java,v 1.2 2005/10/18 13:31:58 mungady Exp $
036 *
037 * Changes (from 19-Feb-2003)
038 * -------------------------
039 * 06-May-2003 : Initial version
040 */
041 package org.jfree.xml.factory.objects;
042
043 import java.util.ArrayList;
044 import java.util.Iterator;
045
046 import org.jfree.util.Configuration;
047
048 /**
049 * An class that implements the {@link ClassFactory} interface to
050 * create Arrays of objects. The object descriptions are created on
051 * demand.
052 *
053 * @author Thomas Morgner.
054 */
055 public class ArrayClassFactory implements ClassFactory {
056
057 /**
058 * Default constructor.
059 */
060 public ArrayClassFactory() {
061 super();
062 }
063
064 /**
065 * Returns an object description for a class.
066 *
067 * @param c the class.
068 *
069 * @return The object description.
070 */
071 public ObjectDescription getDescriptionForClass(final Class c) {
072 if (!c.isArray()) {
073 return null;
074 }
075 else {
076 return new ArrayObjectDescription(c);
077 }
078 }
079
080 /**
081 * Returns an object description for the super class of a class.
082 * This method always returns null.
083 *
084 * @param d the class.
085 * @param knownSuperClass the last known super class or null.
086 *
087 * @return The object description.
088 */
089 public ObjectDescription getSuperClassObjectDescription
090 (final Class d, final ObjectDescription knownSuperClass) {
091 return null;
092 }
093
094 /**
095 * Returns an iterator for the registered classes. This returns a list
096 * of pre-registered classes known to this ClassFactory. A class may be able
097 * to handle more than the registered classes.
098 * <p>
099 * This method exists to support query tools for UI design, do not rely on it
100 * for day to day work.
101 *
102 * @return The iterator.
103 */
104 public Iterator getRegisteredClasses() {
105 final ArrayList l = new ArrayList();
106 l.add(Object[].class);
107 return l.iterator();
108 }
109
110 /**
111 * Configures this factory. The configuration contains several keys and
112 * their defined values. The given reference to the configuration object
113 * will remain valid until the report parsing or writing ends.
114 * <p>
115 * The configuration contents may change during the reporting.
116 *
117 * @param config the configuration, never null
118 */
119 public void configure(final Configuration config) {
120 // nothing required
121 }
122
123 /**
124 * ArrayClassFactories are always equal, there is nothing that could
125 * not be equal :)
126 *
127 * @param o the other object.
128 * @return true, if both object factories describe the same objects, false otherwise.
129 */
130 public boolean equals(final Object o) {
131 if (this == o) {
132 return true;
133 }
134 if (!(o instanceof ArrayClassFactory)) {
135 return false;
136 }
137 return true;
138 }
139
140 /**
141 * Returns a hash code value for the object. This method is
142 * supported for the benefit of hashtables such as those provided by
143 * <code>java.util.Hashtable</code>.
144 *
145 * @return the computed hashcode.
146 */
147 public int hashCode() {
148 return getClass().hashCode();
149 }
150 }