Package org.apache.lucene.util

Class MapOfSets<K,V>

java.lang.Object

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 internal purposes only and might change in incompatible ways in the next release.

Constructor Summary

Constructors

Constructor	Description
MapOfSets(Map<K,Set<V>> m)

Method Summary

Modifier and Type	Method	Description
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 Details

MapOfSets

public MapOfSets(Map<K,Set<V>> m)

Parameters:

m - the backing store for this object

Method Details

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.