Package org.eclipse.rdf4j.query.parser.sparql.aggregate

Class AggregateFunction<T extends AggregateCollector,D>

java.lang.Object

org.eclipse.rdf4j.query.parser.sparql.aggregate.AggregateFunction<T,D>

Type Parameters:

T -

D -

Direct Known Subclasses:

StatisticalAggregateFunction

@Experimental
public abstract class AggregateFunction<T extends AggregateCollector,D>
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected Function<BindingSet,Value>	evaluationStep

Constructor Summary

Constructors

Constructor	Description
AggregateFunction(Function<BindingSet,Value> evaluationStep)

Method Summary

Modifier and Type	Method	Description
protected Value	evaluate(BindingSet s)
abstract void	processAggregate(BindingSet bindingSet, Predicate<D> distinctValue, T agv)

Methods inherited from class java.lang.Object

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

Field Detail

evaluationStep

protected final Function<BindingSet,Value> evaluationStep

Constructor Detail

AggregateFunction

public AggregateFunction(Function<BindingSet,Value> evaluationStep)

Method Detail

processAggregate

public abstract void processAggregate(BindingSet bindingSet,
                                      Predicate<D> distinctValue,
                                      T agv)
                               throws QueryEvaluationException

Throws:

QueryEvaluationException

evaluate

protected Value evaluate(BindingSet s)
                  throws QueryEvaluationException

Throws:

QueryEvaluationException