001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package com.sun.data.provider.impl;
043:
044: import com.sun.data.provider.RowKey;
045:
046: /**
047: * <p>ObjectRowKey uses an object as the identifier for a data row in a
048: * {@link com.sun.data.provider.TableDataProvider}.</p>
049: *
050: * @author Joe Nuxoll
051: */
052: public class ObjectRowKey extends RowKey {
053:
054: /**
055: * Constructs an ObjectRowKey using the specified object
056: *
057: * @param object The desired object
058: */
059: public ObjectRowKey(Object object) {
060: super (object != null ? String.valueOf(object.hashCode())
061: : String.valueOf(object));
062: this .object = object;
063: }
064:
065: /**
066: * Returns the object of this ObjectRowKey
067: *
068: * @return This ObjectRowKey's object value
069: */
070: public Object getObject() {
071: return object;
072: }
073:
074: /**
075: * Standard equals implementation. This method compares the ObjectRowKey
076: * object values for equality (== || .equals()). If the passed Object is
077: * not an ObjectRowKey instance, the superclass (RowKey) gets a chance to
078: * evaluate the Object for equality.
079: *
080: * @param o the Object to check equality
081: * @return true if equal, false if not
082: * @see Object#equals(Object)
083: */
084: public boolean equals(Object o) {
085: if (o instanceof ObjectRowKey) {
086: Object orkO = ((ObjectRowKey) o).getObject();
087: return orkO == object
088: || (orkO != null && orkO.equals(object));
089: }
090: return super .equals(o);
091: }
092:
093: /**
094: * <p>Standard implementation of compareTo(Object). This checks for
095: * equality first (using equals(Object)), then compares the stored object
096: * in the ObjectRowKeys. If the contained object does not implement
097: * Comparable, the superclass version of compareTo(Object) is invoked.</p>
098: *
099: * {@inheritDoc}
100: */
101: public int compareTo(Object o) {
102: if (object instanceof Comparable && o instanceof ObjectRowKey) {
103: Object ork = ((ObjectRowKey) o).getObject();
104: return ((Comparable) object).compareTo(ork);
105: }
106: return super .compareTo(o);
107: }
108:
109: private Object object;
110: }
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