io.nem.core.utils

Class AbstractTwoLevelMap<TKey,TValue>

java.lang.Object

io.nem.core.utils.AbstractTwoLevelMap<TKey,TValue>

public abstract class AbstractTwoLevelMap<TKey,TValue>
extends java.lang.Object

A two-level map of items.
Items are automatically created on access. Item associations are order-dependent.

Constructor Summary

Constructors

Constructor and Description
AbstractTwoLevelMap()

Method Summary

Modifier and Type	Method and Description
protected abstract TValue	createValue() Creates a new blank value.
TValue	getItem(TKey key1, TKey key2) Gets the TValue associated with key1 and key2.
java.util.Map<TKey,TValue>	getItems(TKey key) Gets the (TKey, TValue) map associated with key.
java.util.Set<TKey>	keySet() Gets the key set of this map.
void	remove(TKey key) Removes a key from the map.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractTwoLevelMap

public AbstractTwoLevelMap()

Method Detail

getItem

public TValue getItem(TKey key1,
                      TKey key2)

Gets the TValue associated with key1 and key2.

Parameters:

key1 - The first key.

key2 - The second key.

Returns:

The value associated with key and key2.

getItems

public java.util.Map<TKey,TValue> getItems(TKey key)

Gets the (TKey, TValue) map associated with key.

Parameters:

key - The first key.

Returns:

The map associated with key.

remove

public void remove(TKey key)

Removes a key from the map.

Parameters:

key - The key to remove.

keySet

public java.util.Set<TKey> keySet()

Gets the key set of this map.

Returns:

The key set.

createValue

protected abstract TValue createValue()

Creates a new blank value.

Returns:

A new value.