org.apache.lucene.util
Class MapOfSets<K,V>

java.lang.Object
  extended by org.apache.lucene.util.MapOfSets<K,V>

public class MapOfSets<K,V>
extends Object

Helper class for keeping Lists of Objects associated with keys. WARNING: THIS CLASS IS NOT THREAD SAFE

NOTE: This API is for Lucene internal purposes only and might change in incompatible ways in the next release.

Constructor Summary
MapOfSets(Map<K,Set<V>> m)
           
 
Method Summary
 Map<K,Set<V>> getMap()
           
 int put(K key, V val)
          Adds val to the Set associated with key in the Map.
 int putAll(K key, Collection<? extends V> vals)
          Adds multiple vals to the Set associated with key in the Map.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

MapOfSets

public MapOfSets(Map<K,Set<V>> m)
Parameters:
m - the backing store for this object
Method Detail

getMap

public Map<K,Set<V>> getMap()
Returns:
direct access to the map backing this object.

put

public int put(K key,
               V val)
Adds val to the Set associated with key in the Map. If key is not already in the map, a new Set will first be created.

Returns:
the size of the Set associated with key once val is added to it.

putAll

public int putAll(K key,
                  Collection<? extends V> vals)
Adds multiple vals to the Set associated with key in the Map. If key is not already in the map, a new Set will first be created.

Returns:
the size of the Set associated with key once val is added to it.


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