jdbm
Interface SecondaryKeyExtractor<A,K,V>

Type Parameters:

A - Type of secondary key

K - Type of primary key

V - Type of primary value

public interface SecondaryKeyExtractor<A,K,V>

Extract secondary key from record in primary map.

Author:

Jan Kotek

Method Summary

A	extractSecondaryKey(K key, V value) Extracts secondary key from primary map

Method Detail

extractSecondaryKey

A extractSecondaryKey(K key,
                      V value)

Extracts secondary key from primary map

Parameters:

key - key in primary table

value - value in primary table

Returns:

secondary key or null to skip this record