com.github.pmerienne.trident.state.memory

Class MemorySetMultiMapState<K,V>

java.lang.Object

com.github.pmerienne.trident.state.memory.TransactionalMemoryMapState<Set<V>>

com.github.pmerienne.trident.state.memory.MemorySetMultiMapState<K,V>

All Implemented Interfaces:

ExtendedState<V>, SetMultiMapState<K,V>, storm.trident.state.ITupleCollection, storm.trident.state.map.MapState<Set<V>>, storm.trident.state.map.ReadOnlyMapState<Set<V>>, storm.trident.state.snapshot.ReadOnlySnapshottable<Set<V>>, storm.trident.state.snapshot.Snapshottable<Set<V>>, storm.trident.state.State

public class MemorySetMultiMapState<K,V>
extends TransactionalMemoryMapState<Set<V>>
implements SetMultiMapState<K,V>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MemorySetMultiMapState.Factory<K,V>

Nested classes/interfaces inherited from class com.github.pmerienne.trident.state.memory.TransactionalMemoryMapState

TransactionalMemoryMapState.MemoryMapStateBacking<T>

Constructor Summary

Constructors

Constructor and Description
MemorySetMultiMapState(String id)

Method Summary

Methods

Modifier and Type	Method and Description
Set<V>	get(K key) Returns a Set view of all values associated with a key.
boolean	put(K key, V value) Stores a key-value pair in the multimap.
long	sizeOf(K key) Returns the numbers of values which are mapped to a given key

Methods inherited from class com.github.pmerienne.trident.state.memory.TransactionalMemoryMapState

beginCommit, commit, get, getTuples, multiGet, multiPut, multiUpdate, set, update

Methods inherited from class java.lang.Object

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

Methods inherited from interface storm.trident.state.State

beginCommit, commit

Constructor Detail

MemorySetMultiMapState

public MemorySetMultiMapState(String id)

Method Detail

sizeOf

public long sizeOf(K key)

Description copied from interface: SetMultiMapState

Returns the numbers of values which are mapped to a given key

Specified by:

sizeOf in interface SetMultiMapState<K,V>

Returns:

get

public Set<V> get(K key)

Description copied from interface: SetMultiMapState

Returns a Set view of all values associated with a key. If there's no mappings, an empty Set is returned.

Specified by:

get in interface SetMultiMapState<K,V>

Returns:

the set of values that the key maps to

put

public boolean put(K key,
          V value)

Description copied from interface: SetMultiMapState

Stores a key-value pair in the multimap. Storing a key-value pair that's already in the multimap has no effect.

Specified by:

put in interface SetMultiMapState<K,V>

Parameters:

key - key to store

value - value to store

Returns:

true if this changed the state