io.nem.symbol.core.utils

Class AbstractTwoLevelMap<K,V>

java.lang.Object

io.nem.symbol.core.utils.AbstractTwoLevelMap<K,V>

public abstract class AbstractTwoLevelMap<K,V>
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 V	createValue() Creates a new blank value.
V	getItem(K key1, K key2) Gets the TValue associated with key1 and key2.
java.util.Map<K,V>	getItems(K key) Gets the (TKey, TValue) map associated with key.
java.util.Set<K>	keySet() Gets the key set of this map.
void	remove(K 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 V getItem(K key1,
                 K 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<K,V> getItems(K key)

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

Parameters:

key - The first key.

Returns:

The map associated with key.

remove

public void remove(K key)

Removes a key from the map.

Parameters:

key - The key to remove.

keySet

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

Gets the key set of this map.

Returns:

The key set.

createValue

protected abstract V createValue()

Creates a new blank value.

Returns:

A new value.