I think the copyright year in the header should be 2005. :)
geir
On Mar 1, 2005, at 9:50 PM, [EMAIL PROTECTED] wrote:
Author: dblevins Date: Tue Mar 1 21:50:40 2005 New Revision: 155882
URL: http://svn.apache.org/viewcvs?view=rev&rev=155882
Log:
Handy little implementation of map that indexes instances in a ReferenceCollection by a key of your choosing.
Added:
geronimo/trunk/modules/kernel/src/java/org/apache/geronimo/gbean/ ReferenceMap.java
Added: geronimo/trunk/modules/kernel/src/java/org/apache/geronimo/gbean/ ReferenceMap.java
URL: http://svn.apache.org/viewcvs/geronimo/trunk/modules/kernel/src/java/ org/apache/geronimo/gbean/ReferenceMap.java?view=auto&rev=155882
======================================================================= =======
--- geronimo/trunk/modules/kernel/src/java/org/apache/geronimo/gbean/ ReferenceMap.java (added)
+++ geronimo/trunk/modules/kernel/src/java/org/apache/geronimo/gbean/ ReferenceMap.java Tue Mar 1 21:50:40 2005
@@ -0,0 +1,123 @@
+/**
+ *
+ * Copyright 2003-2004 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.geronimo.gbean;
+
+import java.util.*;
+
+public class ReferenceMap implements Map, ReferenceCollectionListener {
+ private final ReferenceCollection collection;
+ private final Map map;
+ private final Key key;
+
+ /**
+ * Constructs the ReferenceMap using a new instance of
+ * HashMap as the internal map.
+ *
+ * @param collection Must be an instance of ReferenceCollection
+ * @param map The map instance to which references will be added/removed
+ * @param key
+ */
+ public ReferenceMap(Collection collection, Map map, Key key) {
+ this.collection = (ReferenceCollection) collection;
+ this.map = map;
+ this.key = key;
+ for (Iterator iterator = this.collection.iterator(); iterator.hasNext();) {
+ Object object = iterator.next();
+ map.put(key.getKey(object), object);
+ }
+ this.collection.addReferenceCollectionListener(this);
+ }
+
+ /**
+ * Constructs the ReferenceMap using a new instance of
+ * HashMap as the internal map.
+ *
+ * @param collection Must be an instance of ReferenceCollection
+ * @param key
+ */
+ public ReferenceMap(Collection collection, Key key) {
+ this(collection, new HashMap(), key);
+ }
+
+ public void memberAdded(ReferenceCollectionEvent event) {
+ map.put(key.getKey(event.getMember()), event.getMember());
+ }
+
+ public void memberRemoved(ReferenceCollectionEvent event) {
+ map.remove(key.getKey(event.getMember()));
+ }
+
+ public interface Key {
+ public Object getKey(Object object);
+ }
+
+ public int size() {
+ return map.size();
+ }
+
+ public boolean isEmpty() {
+ return map.isEmpty();
+ }
+
+ public boolean containsKey(Object key) {
+ return map.containsKey(key);
+ }
+
+ public boolean containsValue(Object value) {
+ return map.containsValue(value);
+ }
+
+ public Object get(Object key) {
+ return map.get(key);
+ }
+
+ public Object put(Object key, Object value) {
+ return map.put(key, value);
+ }
+
+ public Object remove(Object key) {
+ return map.remove(key);
+ }
+
+ public void putAll(Map t) {
+ map.putAll(t);
+ }
+
+ public void clear() {
+ map.clear();
+ }
+
+ public Set keySet() {
+ return map.keySet();
+ }
+
+ public Collection values() {
+ return map.values();
+ }
+
+ public Set entrySet() {
+ return map.entrySet();
+ }
+
+ public boolean equals(Object o) {
+ return map.equals(o);
+ }
+
+ public int hashCode() {
+ return map.hashCode();
+ }
+}
-- Geir Magnusson Jr +1-203-665-6437 [EMAIL PROTECTED]
