jdbm
Interface SecondaryTreeMap<A,K,V>

Type Parameters:

A - Type of secondary key

K - Type of primary key

V - Type of value in primary map

All Superinterfaces:

java.util.Map<A,java.lang.Iterable<K>>, java.util.SortedMap<A,java.lang.Iterable<K>>

All Known Implementing Classes:

BTreeSecondarySortedMap

public interface SecondaryTreeMap<A,K,V>
extends java.util.SortedMap<A,java.lang.Iterable<K>>

Secondary TreeMap. It provides view over primary data. This map is updated automatically as primary map changes. This map is unmodifiable, any attempt to modify it will throw 'UnsupportedOperationException'

Author:

Jan Kotek

Nested Class Summary

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

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

Method Summary

V	getPrimaryValue(K k) Convert primary key to primary value.
java.lang.Iterable<V>	getPrimaryValues(A a) Returns values from primary map which are matching given secondary key

Methods inherited from interface java.util.SortedMap

comparator, entrySet, firstKey, headMap, keySet, lastKey, subMap, tailMap, values

Methods inherited from interface java.util.Map

clear, containsKey, containsValue, equals, get, hashCode, isEmpty, put, putAll, remove, size

Method Detail

getPrimaryValue

V getPrimaryValue(K k)

Convert primary key to primary value. This will query primary table and returns result, it is little shortcut.

Parameters:

k - primary key

Returns:

value from primary table

getPrimaryValues

java.lang.Iterable<V> getPrimaryValues(A a)

Returns values from primary map which are matching given secondary key

Parameters:

a -

Returns:

Iterable over values, this never returns null.