001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.commons.jxpath.ri.model.dynabeans;
018
019 import java.util.Locale;
020
021 import org.apache.commons.beanutils.DynaBean;
022 import org.apache.commons.jxpath.ri.QName;
023 import org.apache.commons.jxpath.ri.model.NodePointer;
024 import org.apache.commons.jxpath.ri.model.beans.PropertyOwnerPointer;
025 import org.apache.commons.jxpath.ri.model.beans.PropertyPointer;
026
027
028 /**
029 * A Pointer that points to a {@link DynaBean}. If the target DynaBean is Serializable,
030 * so should this instance be.
031 *
032 * @author Dmitri Plotnikov
033 * @version $Revision: 668329 $ $Date: 2008-06-16 16:59:48 -0500 (Mon, 16 Jun 2008) $
034 */
035 public class DynaBeanPointer extends PropertyOwnerPointer {
036 private static final long serialVersionUID = -9135052498044877965L;
037
038 private QName name;
039 private DynaBean dynaBean;
040
041 /**
042 * Create a new DynaBeanPointer.
043 * @param name is the name given to the first node
044 * @param dynaBean pointed
045 * @param locale Locale
046 */
047 public DynaBeanPointer(QName name, DynaBean dynaBean, Locale locale) {
048 super(null, locale);
049 this.name = name;
050 this.dynaBean = dynaBean;
051 }
052
053 /**
054 * Create a new DynaBeanPointer.
055 * @param parent pointer
056 * @param name is the name given to the first node
057 * @param dynaBean pointed
058 */
059 public DynaBeanPointer(NodePointer parent, QName name, DynaBean dynaBean) {
060 super(parent);
061 this.name = name;
062 this.dynaBean = dynaBean;
063 }
064
065 public PropertyPointer getPropertyPointer() {
066 return new DynaBeanPropertyPointer(this, dynaBean);
067 }
068
069 public QName getName() {
070 return name;
071 }
072
073 public Object getBaseValue() {
074 return dynaBean;
075 }
076
077 public Object getImmediateNode() {
078 return dynaBean;
079 }
080
081 public boolean isCollection() {
082 return false;
083 }
084
085 public int getLength() {
086 return 1;
087 }
088
089 public boolean isLeaf() {
090 return false;
091 }
092
093 public int hashCode() {
094 return name == null ? 0 : name.hashCode();
095 }
096
097 public boolean equals(Object object) {
098 if (object == this) {
099 return true;
100 }
101
102 if (!(object instanceof DynaBeanPointer)) {
103 return false;
104 }
105
106 DynaBeanPointer other = (DynaBeanPointer) object;
107 if (!(equalObjects(parent, other.parent) && equalObjects(name, other.name))) {
108 return false;
109 }
110
111 int iThis = (index == WHOLE_COLLECTION ? 0 : index);
112 int iOther = (other.index == WHOLE_COLLECTION ? 0 : other.index);
113 return iThis == iOther && dynaBean == other.dynaBean;
114 }
115
116 public String asPath() {
117 return parent == null ? "/" : super.asPath();
118 }
119
120 /**
121 * Learn whether two objects are == || .equals().
122 * @param o1 first object
123 * @param o2 second object
124 * @return boolean
125 */
126 private static boolean equalObjects(Object o1, Object o2) {
127 return o1 == o2 || o1 != null && o1.equals(o2);
128 }
129 }