Package org.aksw.jenax.arq.aggregation

Class AggTransform<I,O>

java.lang.Object

org.aksw.jenax.arq.aggregation.AggTransform<I,O>

All Implemented Interfaces:

org.aksw.commons.collector.domain.Aggregator<org.apache.jena.sparql.engine.binding.Binding,org.apache.jena.sparql.function.FunctionEnv,O>, Agg<O>

public class AggTransform<I,O>
extends Object
implements Agg<O>

Constructor Summary

Constructors

Constructor	Description
AggTransform(Agg<I> subAgg, com.google.common.base.Function<I,O> transform)
AggTransform(Agg<I> subAgg, Function<I,O> transform)

Method Summary

Modifier and Type	Method	Description
static <I, O> AggTransform<I,O>	create(Agg<I> subAgg, Function<I,O> transform)
Acc<O>	createAccumulator()
Set<org.apache.jena.sparql.core.Var>	getDeclaredVars()	An accumulator may declare the variable it references.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.aksw.commons.collector.domain.Aggregator

accumulateAll, accumulateAll, accumulateAll, finish

Constructor Details

AggTransform

public AggTransform(Agg<I> subAgg,
 com.google.common.base.Function<I,O> transform)

AggTransform

public AggTransform(Agg<I> subAgg,
 Function<I,O> transform)

Method Details

createAccumulator

public Acc<O> createAccumulator()

Specified by:

createAccumulator in interface Agg<I>

Specified by:

createAccumulator in interface org.aksw.commons.collector.domain.Aggregator<org.apache.jena.sparql.engine.binding.Binding,org.apache.jena.sparql.function.FunctionEnv,O>

getDeclaredVars

public Set<org.apache.jena.sparql.core.Var> getDeclaredVars()

Description copied from interface: Agg

An accumulator may declare the variable it references. The variables can be derived from e.g. underlying Sparql expressions or sub aggregators.

Specified by:

getDeclaredVars in interface Agg<I>

Returns:

create

public static <I,
O> AggTransform<I,O> create(Agg<I> subAgg,
 Function<I,O> transform)