Class AggInputFilter<I, E, O, SUBACC extends Accumulator<I,E,O>, SUBAGG extends ParallelAggregator<I,E,O,SUBACC>>

java.lang.Object

org.aksw.commons.collector.core.AggInputFilter<I,E,O,SUBACC,SUBAGG>

Type Parameters:

I -

O -

SUBACC -

SUBAGG -

All Implemented Interfaces:

Serializable, Aggregator<I,E,O>, ParallelAggregator<I, E, O, AggInputFilter.AccInputFilter<I,E,O,SUBACC>>

public class AggInputFilter<I, E, O, SUBACC extends Accumulator<I,E,O>, SUBAGG extends ParallelAggregator<I,E,O,SUBACC>>
extends Object
implements ParallelAggregator<I, E, O, AggInputFilter.AccInputFilter<I,E,O,SUBACC>>, Serializable

Wrap an aggregator such that inputs are passed through a predicate. The predicate must evaluate to true for an item to be forwarded to the underyling accumulator.

Author:

raven

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	AggInputFilter.AccFilterInputImpl
static interface	AggInputFilter.AccInputFilter<I, E, O, SUBACC extends Accumulator<I,E,O>>

Field Summary

Fields

Modifier and Type	Field	Description
protected Predicate<? super I>	inputFilter
protected SUBAGG	subAgg

Constructor Summary

Constructors

Constructor	Description
AggInputFilter(SUBAGG subAgg, Predicate<? super I> inputFilter)

Method Summary

Modifier and Type	Method	Description
AggInputFilter.AccInputFilter<I,E,O,SUBACC>	combine(AggInputFilter.AccInputFilter<I,E,O,SUBACC> a, AggInputFilter.AccInputFilter<I,E,O,SUBACC> b)	Combine accumulators.
AggInputFilter.AccInputFilter<I,E,O,SUBACC>	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

subAgg

protected SUBAGG extends ParallelAggregator<I,E,O,SUBACC> subAgg

inputFilter

protected Predicate<? super I> inputFilter

Constructor Details

AggInputFilter

public AggInputFilter(SUBAGG subAgg,
 Predicate<? super I> inputFilter)

Method Details

createAccumulator

public AggInputFilter.AccInputFilter<I,E,O,SUBACC> createAccumulator()

Specified by:

createAccumulator in interface Aggregator<I,E,O>

Specified by:

createAccumulator in interface ParallelAggregator<I, E, O, SUBACC extends Accumulator<I,E,O>>

combine

public AggInputFilter.AccInputFilter<I,E,O,SUBACC> combine(AggInputFilter.AccInputFilter<I,E,O,SUBACC> a,
 AggInputFilter.AccInputFilter<I,E,O,SUBACC> 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, O, SUBACC extends Accumulator<I,E,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