jdbm
Interface InverseHashView<K,V>

Type Parameters:

K -

V -

public interface InverseHashView<K,V>

Provides inverse view on persisted map. It uses hash index to find Key which belongs to Value. Value must correctly implement hashCode . Internally is backed by SecondaryTreeMap which uses value hashCode as Secondary key.

Author:

Jan Kotek

Method Summary

K	findKeyForValue(V val) Finds first primary key which corresponds to value.
java.lang.Iterable<K>	findKeysForValue(V val) Finds primary keys which corresponds to value.

Method Detail

findKeyForValue

K findKeyForValue(V val)

Finds first primary key which corresponds to value. There may be more then one, others are ignored

Parameters:

val -

Returns:

first primary key found or null if not found

findKeysForValue

java.lang.Iterable<K> findKeysForValue(V val)

Finds primary keys which corresponds to value. There may be more then one, others are ignored

Parameters:

val -

Returns:

primary keys found