Package org.apache.flink.runtime.util

Class DualKeyLinkedMap<A,B,V>

java.lang.Object

org.apache.flink.runtime.util.DualKeyLinkedMap<A,B,V>

Type Parameters:

A - Type of key A. Key A is the primary key.

B - Type of key B. Key B is the secondary key.

V - Type of the value

public class DualKeyLinkedMap<A,B,V>
extends Object

Map which stores values under two different indices. The mapping of the primary key to the value is backed by LinkedHashMap so that the iteration order over the values and the primary key set is the insertion order. Note that the insertion order is not affected if a primary key is re-inserted into the map. Also note that there is no contract of the iteration order over the secondary key set.

Constructor Summary

Constructors

Constructor	Description
DualKeyLinkedMap()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKeyA(A aKey)
boolean	containsKeyB(B bKey)
A	getKeyAByKeyB(B bKey)
B	getKeyBByKeyA(A aKey)
V	getValueByKeyA(A aKey)
V	getValueByKeyB(B bKey)
Set<A>	keySetA()
Set<B>	keySetB()
V	put(A aKey, B bKey, V value)
V	removeKeyA(A aKey)
V	removeKeyB(B bKey)
int	size()
Collection<V>	values()

Methods inherited from class java.lang.Object

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

Constructor Details

DualKeyLinkedMap

public DualKeyLinkedMap()

Method Details

size

public int size()

getValueByKeyA

@Nullable
public V getValueByKeyA(A aKey)

getValueByKeyB

@Nullable
public V getValueByKeyB(B bKey)

getKeyAByKeyB

@Nullable
public A getKeyAByKeyB(B bKey)

getKeyBByKeyA

@Nullable
public B getKeyBByKeyA(A aKey)

put

@Nullable
public V put(A aKey,
 B bKey,
 V value)

containsKeyA

public boolean containsKeyA(A aKey)

containsKeyB

public boolean containsKeyB(B bKey)

removeKeyA

@Nullable
public V removeKeyA(A aKey)

removeKeyB

@Nullable
public V removeKeyB(B bKey)

values

public Collection<V> values()

keySetA

public Set<A> keySetA()

keySetB

public Set<B> keySetB()

clear

public void clear()