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1
56 package org.objectstyle.cayenne.util;
57
58 import java.util.Comparator  ;
59 import java.util.Iterator ;
60 import java.util.Map ;
61 import java.util.SortedMap ;
62
63 import org.apache.commons.collections.FastTreeMap;
64
65
79 public class CayenneMap extends FastTreeMap {
80 protected Object parent;
81
82
85 public CayenneMap(Object parent) {
86 this.parent = parent;
87 }
88
89
93 public CayenneMap(Object parent, Comparator c) {
94 super(c);
95 this.parent = parent;
96 }
97
98
102 public CayenneMap(Object parent, Map m) {
103 this.parent = parent;
105 putAll(m);
106 }
107
108
112 public CayenneMap(Object parent, SortedMap m) {
113 this.parent = parent;
115 putAll(m);
116 }
117
118
124 public Object put(Object key, Object value) {
125
126 if (containsKey(key) && get(key) != value) {
127 StringBuffer message = new StringBuffer ();
129 message.append("Attempt to insert duplicate key. [key '");
130 message.append(key);
131 message.append("'");
132
133 if (parent instanceof CayenneMapEntry) {
134 message.append(", parent '").append(
135 ((CayenneMapEntry) parent).getName()).append(
136 "'");
137 }
138
139 if (value instanceof CayenneMapEntry) {
140 message.append(", child '").append(
141 ((CayenneMapEntry) value).getName()).append(
142 "'");
143 }
144 message.append("]");
145
146 throw new IllegalArgumentException (message.toString());
147 }
148
149 if (value instanceof CayenneMapEntry) {
150 ((CayenneMapEntry) value).setParent(parent);
151 }
152
153 super.put(key, value);
154 return null;
155 }
156
157
160 public void putAll(Map t) {
161 Iterator it = t.keySet().iterator();
162 while (it.hasNext()) {
163 Object key = it.next();
164 put(key, t.get(key));
165 }
166 }
167
168
172 public Object getParent() {
173 return parent;
174 }
175
176 public void setParent(Object mapParent) {
177 this.parent = mapParent;
178 }
179 }
180 |
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