ix.util
Class MultiHashMap

java.lang.Object
  java.util.AbstractMap<K,V>
      java.util.HashMap
          ix.util.MultiHashMap

All Implemented Interfaces:

MultiMap, java.io.Serializable, java.lang.Cloneable, java.util.Map

Direct Known Subclasses:

ContextMultiHashMap

public class MultiHashMap
extends java.util.HashMap
implements MultiMap

A MultiHashMap is (by weak analogy with "multiset") a HashMap that maps each key to a collection of values. When the first value is added for a given key, the collection that holds that key's values is created by the makeValueCollection method. In this class, it creates a LinkedList, but that can be changed by redefining the method in a subclass.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Constructor Summary

MultiHashMap()

Method Summary

java.lang.Object	addValue(java.lang.Object key, java.lang.Object value)
java.util.Collection	makeValueCollection(java.lang.Object firstItem)
java.lang.Object	put(java.lang.Object key, java.lang.Object value) Set the entire colletion of values associated with the key.
boolean	removeValue(java.lang.Object key, java.lang.Object value)

Methods inherited from class java.util.HashMap

clear, clone, containsKey, containsValue, entrySet, get, isEmpty, keySet, putAll, remove, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, putAll, remove, size, values

Constructor Detail

MultiHashMap

public MultiHashMap()

Method Detail

put

public java.lang.Object put(java.lang.Object key,
                            java.lang.Object value)

Set the entire colletion of values associated with the key.

Specified by:

put in interface java.util.Map

Overrides:

put in class java.util.HashMap

addValue

public java.lang.Object addValue(java.lang.Object key,
                                 java.lang.Object value)

Specified by:

addValue in interface MultiMap

removeValue

public boolean removeValue(java.lang.Object key,
                           java.lang.Object value)

Specified by:

removeValue in interface MultiMap

makeValueCollection

public java.util.Collection makeValueCollection(java.lang.Object firstItem)

Specified by:

makeValueCollection in interface MultiMap