Class AggInputBroadcastMap<I,E,K,O>

java.lang.Object

org.aksw.commons.collector.core.AggInputBroadcastMap<I,E,K,O>

Type Parameters:

I - Input type

K - The key type by which aggregators are referred to

O - output type common to all aggregators

All Implemented Interfaces:

Serializable, Aggregator<I,E,Map<K,O>>, ParallelAggregator<I, E, Map<K,O>, AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O>>

public class AggInputBroadcastMap<I,E,K,O>
extends Object
implements ParallelAggregator<I, E, Map<K,O>, AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O>>, Serializable

An aggregator that broadcasts its input to multiple sub-aggregators that accept the same input and have the same structure of the output Serves the purpose to perform two independent type safe aggregations on the same input in a single pass.

Author:

raven

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O>
class	AggInputBroadcastMap.AccInputBroadcastMapImpl

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<K, ParallelAggregator<I,E,O,?>>	subAggMap

Constructor Summary

Constructors

Constructor	Description
AggInputBroadcastMap(Map<K, ParallelAggregator<I,E,O,?>> subAggMap)

Method Summary

Modifier and Type	Method	Description
AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O>	combine(AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O> a, AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O> b)	Combine accumulators.
AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O>	createAccumulator()
boolean	equals(Object obj)
int	hashCode()

Methods inherited from class Object

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

Methods inherited from interface Aggregator

accumulateAll, accumulateAll, accumulateAll, finish

Methods inherited from interface ParallelAggregator

asCollector, asCollector, combineRaw

Field Details

subAggMap

protected Map<K, ParallelAggregator<I,E,O,?>> subAggMap

Constructor Details

AggInputBroadcastMap

public AggInputBroadcastMap(Map<K, ParallelAggregator<I,E,O,?>> subAggMap)

Method Details

createAccumulator

public AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O> createAccumulator()

Specified by:

createAccumulator in interface Aggregator<I,E,K>

Specified by:

createAccumulator in interface ParallelAggregator<I,E,K,O>

combine

public AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O> combine(AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O> a,
 AggInputBroadcastMap.AccInputBroadcastMap<I,E,K,O> b)

Description copied from interface: ParallelAggregator

Combine accumulators. This method is allowed to mutate any of if its arguments, hence accumulators should be considered exhausted after combination.

Specified by:

combine in interface ParallelAggregator<I,E,K,O>

Parameters:

a - First participant of combination

b - Second participant of combination

Returns:

Combined accumulator

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object