scolebourne 2003/10/06 16:47:17
Modified: collections/src/test/org/apache/commons/collections
TestBidiMap.java TestAll.java
collections/src/java/org/apache/commons/collections
BidiMap.java
Added: collections/src/test/org/apache/commons/collections
TestDualHashBidiMap.java
collections/src/java/org/apache/commons/collections
DualHashBidiMap.java AbstractDualBidiMap.java
Removed: collections/src/test/org/apache/commons/collections
TestHashBidiMap.java
collections/src/java/org/apache/commons/collections
HashBidiMap.java
Log:
Rename HashBidiMap to DualHashBidiMap
Add AbstractDualBidiMap
Test and fix bugs
Revision Changes Path
1.5 +15 -9
jakarta-commons/collections/src/test/org/apache/commons/collections/TestBidiMap.java
Index: TestBidiMap.java
===================================================================
RCS file:
/home/cvs/jakarta-commons/collections/src/test/org/apache/commons/collections/TestBidiMap.java,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -r1.4 -r1.5
--- TestBidiMap.java 5 Oct 2003 20:52:29 -0000 1.4
+++ TestBidiMap.java 6 Oct 2003 23:47:17 -0000 1.5
@@ -132,13 +132,6 @@
return false;
}
- /**
- * Override to prevent infinite recursion of tests.
- */
- protected String[] ignoredTests() {
- return new String[]
{"TestHashBidiMap.bulkTestInverseMap.bulkTestInverseMap"};
- }
-
// BidiPut
//-----------------------------------------------------------------------
public void testBidiPut() {
@@ -172,6 +165,19 @@
assertEquals("E", inverse.get("F"));
}
+ /**
+ * Verifies that [EMAIL PROTECTED] #map} is still equal to [EMAIL PROTECTED]
#confirmed}.
+ * <p>
+ * This implementation checks the inverse map as well.
+ */
+ protected void verify() {
+ // verify inverse
+ assertEquals(map.size(), ((BidiMap) map).inverseBidiMap().size());
+
+ // verify fully
+ super.verify();
+ }
+
// testGetKey
//-----------------------------------------------------------------------
public void testBidiGetKey() {
1.50 +3 -3
jakarta-commons/collections/src/test/org/apache/commons/collections/TestAll.java
Index: TestAll.java
===================================================================
RCS file:
/home/cvs/jakarta-commons/collections/src/test/org/apache/commons/collections/TestAll.java,v
retrieving revision 1.49
retrieving revision 1.50
diff -u -r1.49 -r1.50
--- TestAll.java 5 Oct 2003 21:03:44 -0000 1.49
+++ TestAll.java 6 Oct 2003 23:47:17 -0000 1.50
@@ -104,7 +104,7 @@
suite.addTest(TestFastTreeMap.suite());
suite.addTest(TestFastTreeMap1.suite());
suite.addTest(TestHashBag.suite());
- suite.addTest(TestHashBidiMap.suite());
+ suite.addTest(TestDualHashBidiMap.suite());
suite.addTest(TestIteratorUtils.suite());
suite.addTest(TestLRUMap.suite());
suite.addTest(TestMultiHashMap.suite());
1.1
jakarta-commons/collections/src/test/org/apache/commons/collections/TestDualHashBidiMap.java
Index: TestDualHashBidiMap.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons/collections/src/test/org/apache/commons/collections/TestDualHashBidiMap.java,v
1.1 2003/10/06 23:47:17 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.collections;
import junit.framework.Test;
import junit.textui.TestRunner;
/**
* JUnit tests.
*
* @version $Revision: 1.1 $ $Date: 2003/10/06 23:47:17 $
*
* @author Matthew Hawthorne
* @author Stephen Colebourne
*/
public class TestDualHashBidiMap extends TestBidiMap {
public static void main(String[] args) {
TestRunner.run(suite());
}
public static Test suite() {
return BulkTest.makeSuite(TestDualHashBidiMap.class);
}
public TestDualHashBidiMap(String testName) {
super(testName);
}
protected BidiMap makeEmptyBidiMap() {
return new DualHashBidiMap();
}
/**
* Override to prevent infinite recursion of tests.
*/
protected String[] ignoredTests() {
return new String[]
{"TestDualHashBidiMap.bulkTestInverseMap.bulkTestInverseMap"};
}
}
1.3 +18 -9
jakarta-commons/collections/src/java/org/apache/commons/collections/BidiMap.java
Index: BidiMap.java
===================================================================
RCS file:
/home/cvs/jakarta-commons/collections/src/java/org/apache/commons/collections/BidiMap.java,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -r1.2 -r1.3
--- BidiMap.java 5 Oct 2003 20:38:55 -0000 1.2
+++ BidiMap.java 6 Oct 2003 23:47:17 -0000 1.3
@@ -62,9 +62,18 @@
/**
* Defines a map that allows bidirectional lookup between key and values.
* <p>
+ * This extended <code>Map</code> represents a mapping where a key may
+ * lookup a value and a value may lookup a key with equal ease.
+ * Th interface extends <code>Map</code> and so may be used anywhere a map
+ * is required. The interface provides an inverse map view, enabling
+ * full access to both directions of the <code>BidiMap</code>.
+ * <p>
* Implementations should allow a value to be looked up from a key and
* a key to be looked up from a value with equal performance.
- *
+ * It should be noted that the quickest way to implement the <code>values</code>
+ * method is usually to return <code>inverseBidiMap().keySet()</code>.
+ *
+ * @see org.apache.commons.collections.DualHashBidiMap
* @since Commons Collections 3.0
* @version $Revision$ $Date$
*
@@ -79,11 +88,11 @@
* against a different key. That mapping is removed, to ensure that the
* value only occurs once in the inverse map.
* <pre>
- * BidiMap map1 = new HashBidiMap();
+ * BidiMap map1 = new DualHashBidiMap();
* map.put("A","B"); // contains A mapped to B, as per Map
* map.put("A","C"); // contains A mapped to C, as per Map
*
- * BidiMap map2 = new HashBidiMap();
+ * BidiMap map2 = new DualHashBidiMap();
* map.put("A","B"); // contains A mapped to B, as per Map
* map.put("C","B"); // contains C mapped to B, key A is removed
* </pre>
@@ -100,7 +109,7 @@
* @throws NullPointerException (optional) if the map limits the values to
* non-null and null was specified
*/
- public Object put(Object key, Object value);
+ Object put(Object key, Object value);
/**
* Gets the key that is currently mapped to the specified value.
@@ -118,7 +127,7 @@
* @throws NullPointerException (optional) if the map limits the values to
* non-null and null was specified
*/
- public Object getKey(Object value);
+ Object getKey(Object value);
/**
* Removes the key-value pair that is currently mapped to the specified
@@ -139,7 +148,7 @@
* @throws UnsupportedOperationException if this method is not supported
* by the implementation
*/
- public Object removeKey(Object value);
+ Object removeKey(Object value);
/**
* Gets a view of this map where the keys and values are reversed.
@@ -153,6 +162,6 @@
*
* @return an inverted bidirectional map
*/
- public BidiMap inverseBidiMap();
+ BidiMap inverseBidiMap();
}
1.1
jakarta-commons/collections/src/java/org/apache/commons/collections/DualHashBidiMap.java
Index: DualHashBidiMap.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons/collections/src/java/org/apache/commons/collections/DualHashBidiMap.java,v
1.1 2003/10/06 23:47:17 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.collections;
import java.util.HashMap;
import java.util.Map;
/**
* Implementation of <code>BidiMap</code> that uses two <code>HashMap</code>
instances.
*
* @since Commons Collections 3.0
* @version $Id: DualHashBidiMap.java,v 1.1 2003/10/06 23:47:17 scolebourne Exp $
*
* @author Matthew Hawthorne
* @author Stephen Colebourne
*/
public class DualHashBidiMap extends AbstractDualBidiMap {
/**
* Creates an empty <code>HashBidiMap</code>
*/
public DualHashBidiMap() {
super(new HashMap(), new HashMap());
}
/**
* Constructs a <code>HashBidiMap</code> and copies the mappings from
* specified <code>Map</code>.
*
* @param map the map whose mappings are to be placed in this map
*/
public DualHashBidiMap(Map map) {
super(new HashMap(), new HashMap());
putAll(map);
}
/**
* Constructs a <code>HashBidiMap</code> that decorates the specified maps.
*
* @param normalMap the normal direction map
* @param reverseMap the reverse direction map
* @param inverseBidiMap the inverse BidiMap
*/
protected DualHashBidiMap(Map normalMap, Map reverseMap, BidiMap inverseBidiMap)
{
super(normalMap, reverseMap, inverseBidiMap);
}
/**
* Creates a new instance of this object.
*
* @param normalMap the normal direction map
* @param reverseMap the reverse direction map
* @param inverseBidiMap the inverse BidiMap
* @return new bidi map
*/
protected BidiMap createBidiMap(Map normalMap, Map reverseMap, BidiMap
inverseMap) {
return new DualHashBidiMap(normalMap, reverseMap, inverseMap);
}
}
1.1
jakarta-commons/collections/src/java/org/apache/commons/collections/AbstractDualBidiMap.java
Index: AbstractDualBidiMap.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons/collections/src/java/org/apache/commons/collections/AbstractDualBidiMap.java,v
1.1 2003/10/06 23:47:17 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.collections;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.apache.commons.collections.decorators.AbstractCollectionDecorator;
import org.apache.commons.collections.decorators.AbstractIteratorDecorator;
import org.apache.commons.collections.decorators.AbstractMapEntryDecorator;
/**
* Abstract <code>BidiMap</code> implemented using two maps.
* <p>
* An implementation can be written simply by implementing the
* <code>createMap</code> method.
*
* @since Commons Collections 3.0
* @version $Id: AbstractDualBidiMap.java,v 1.1 2003/10/06 23:47:17 scolebourne Exp $
*
* @author Matthew Hawthorne
* @author Stephen Colebourne
*/
public abstract class AbstractDualBidiMap implements BidiMap {
/**
* Delegate map array. The first map contains standard entries, and the
* second contains inverses.
*/
protected transient final Map[] maps = new Map[2];
/**
* Inverse view of this map.
*/
protected transient BidiMap inverseBidiMap = null;
/**
* View of the keys.
*/
protected transient Set keySet = null;
/**
* View of the entries.
*/
protected transient Set entrySet = null;
/**
* Creates an empty map.
* <p>
* The maps passed in are not validated, so subclasses need to ensure
* that they are non-null, empty and compatible.
*
* @param normalMap the normal direction map
* @param reverseMap the reverse direction map
*/
protected AbstractDualBidiMap(Map normalMap, Map reverseMap) {
super();
maps[0] = normalMap;
maps[1] = reverseMap;
}
/**
* Constructs a map that decorates the specified maps.
*
* @param normalMap the normal direction map
* @param reverseMap the reverse direction map
* @param inverseBidiMap the inverse BidiMap
*/
protected AbstractDualBidiMap(Map normalMap, Map reverseMap, BidiMap
inverseBidiMap) {
super();
maps[0] = normalMap;
maps[1] = reverseMap;
this.inverseBidiMap = inverseBidiMap;
}
/**
* Creates a new instance of the subclass.
*
* @param normalMap the normal direction map
* @param reverseMap the reverse direction map
* @param inverseMap this map, which is the inverse in the new map
* @return the inverse map
*/
protected abstract BidiMap createBidiMap(Map normalMap, Map reverseMap, BidiMap
inverseMap);
// Map delegation
//-----------------------------------------------------------------------
public Object get(Object key) {
return maps[0].get(key);
}
public int size() {
return maps[0].size();
}
public boolean isEmpty() {
return maps[0].isEmpty();
}
public boolean containsKey(Object key) {
return maps[0].containsKey(key);
}
public boolean equals(Object obj) {
return maps[0].equals(obj);
}
public int hashCode() {
return maps[0].hashCode();
}
public String toString() {
return maps[0].toString();
}
// BidiMap changes
//-----------------------------------------------------------------------
public Object put(Object key, Object value) {
if (maps[0].containsKey(key)) {
maps[1].remove(maps[0].get(key));
}
if (maps[1].containsKey(value)) {
maps[0].remove(maps[1].get(value));
}
final Object obj = maps[0].put(key, value);
maps[1].put(value, key);
return obj;
}
public void putAll(Map map) {
for (Iterator it = map.entrySet().iterator(); it.hasNext();) {
Map.Entry entry = (Map.Entry) it.next();
put(entry.getKey(), entry.getValue());
}
}
public Object remove(Object key) {
Object value = null;
if (maps[0].containsKey(key)) {
value = maps[0].remove(key);
maps[1].remove(value);
}
return value;
}
public void clear() {
maps[0].clear();
maps[1].clear();
}
public boolean containsValue(Object value) {
return maps[1].containsKey(value);
}
// BidiMap
//-----------------------------------------------------------------------
public Object getKey(Object value) {
return maps[1].get(value);
}
public Object removeKey(Object value) {
Object key = null;
if (maps[1].containsKey(value)) {
key = maps[1].remove(value);
maps[0].remove(key);
}
return key;
}
public BidiMap inverseBidiMap() {
if (inverseBidiMap == null) {
inverseBidiMap = createBidiMap(maps[1], maps[0], this);
}
return inverseBidiMap;
}
// Map views
//-----------------------------------------------------------------------
public Set keySet() {
if (keySet == null) {
keySet = new KeySet(this);
}
return keySet;
}
public Collection values() {
return inverseBidiMap().keySet();
}
public Set entrySet() {
if (entrySet == null) {
entrySet = new EntrySet(this);
}
return entrySet;
}
//-----------------------------------------------------------------------
/**
* Inner class View.
*/
protected static abstract class View extends AbstractCollectionDecorator {
protected final AbstractDualBidiMap map;
protected View(Collection coll, AbstractDualBidiMap map) {
super(coll);
this.map = map;
}
public boolean removeAll(Collection coll) {
if (map.isEmpty() || coll.isEmpty()) {
return false;
}
boolean modified = false;
Iterator it = iterator();
while (it.hasNext()) {
if (coll.contains(it.next())) {
it.remove();
modified = true;
}
}
return modified;
}
public boolean retainAll(Collection coll) {
if (map.isEmpty()) {
return false;
}
if (coll.isEmpty()) {
map.clear();
return true;
}
boolean modified = false;
Iterator it = iterator();
while (it.hasNext()) {
if (coll.contains(it.next()) == false) {
it.remove();
modified = true;
}
}
return modified;
}
public void clear() {
map.clear();
}
}
/**
* Inner class KeySet.
*/
protected static class KeySet extends View implements Set {
protected KeySet(AbstractDualBidiMap map) {
super(map.maps[0].keySet(), map);
}
public Iterator iterator() {
return new KeySetIterator(super.iterator(), map);
}
public boolean remove(Object key) {
if (contains(key)) {
Object value = map.maps[0].remove(key);
map.maps[1].remove(value);
return true;
}
return false;
}
}
/**
* Inner class KeySetIterator.
*/
protected static class KeySetIterator extends AbstractIteratorDecorator {
private final AbstractDualBidiMap map;
private Object last;
protected KeySetIterator(Iterator iterator, AbstractDualBidiMap map) {
super(iterator);
this.map = map;
}
public Object next() {
last = super.next();
return last;
}
public void remove() {
Object value = map.maps[0].get(last);
super.remove();
map.maps[1].remove(value);
last = null;
}
}
/**
* Inner class EntrySet.
*/
protected static class EntrySet extends View implements Set {
protected EntrySet(AbstractDualBidiMap map) {
super(map.maps[0].entrySet(), map);
}
public Iterator iterator() {
return new EntrySetIterator(super.iterator(), map);
}
public boolean remove(Object obj) {
if (obj instanceof Map.Entry == false) {
return false;
}
Map.Entry entry = (Map.Entry) obj;
if (map.containsKey(entry.getKey())) {
Object value = map.maps[0].remove(entry.getKey());
map.maps[1].remove(value);
return true;
}
return false;
}
}
/**
* Inner class EntrySetIterator.
*/
protected static class EntrySetIterator extends AbstractIteratorDecorator {
private final AbstractDualBidiMap map;
private Map.Entry last;
protected EntrySetIterator(Iterator iterator, AbstractDualBidiMap map) {
super(iterator);
this.map = map;
}
public Object next() {
last = new MapEntry((Map.Entry) super.next(), map);
return last;
}
public void remove() {
super.remove();
map.maps[1].remove(last.getValue());
last = null;
}
}
/**
* Inner class MapEntry.
*/
protected static class MapEntry extends AbstractMapEntryDecorator {
protected final AbstractDualBidiMap map;
protected MapEntry(Map.Entry entry, AbstractDualBidiMap map) {
super(entry);
this.map = map;
}
public Object setValue(Object value) {
final Object oldValue = super.setValue(value);
// Gets old key and pairs with new value
final Object inverseKey = map.maps[1].remove(oldValue);
map.maps[1].put(value, inverseKey);
return oldValue;
}
}
}
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