org.optaplanner.core.impl.score.stream.bi

Class DefaultBiConstraintCollector<A,B,ResultContainer_,Result_>

java.lang.Object

org.optaplanner.core.impl.score.stream.bi.DefaultBiConstraintCollector<A,B,ResultContainer_,Result_>

All Implemented Interfaces:

BiConstraintCollector<A,B,ResultContainer_,Result_>

public final class DefaultBiConstraintCollector<A,B,ResultContainer_,Result_>
extends Object
implements BiConstraintCollector<A,B,ResultContainer_,Result_>

Constructor Summary

Constructors

Constructor and Description
DefaultBiConstraintCollector(Supplier<ResultContainer_> supplier, TriFunction<ResultContainer_,A,B,Runnable> accumulator, Function<ResultContainer_,Result_> finisher)

Method Summary

Modifier and Type	Method and Description
TriFunction<ResultContainer_,A,B,Runnable>	accumulator() A lambda that extracts data from the matched facts, accumulates it in the result container and returns an undo operation for that accumulation.
Function<ResultContainer_,Result_>	finisher() A lambda that converts the result container into the result.
Supplier<ResultContainer_>	supplier() A lambda that creates the result container, one for each group key combination.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultBiConstraintCollector

public DefaultBiConstraintCollector(Supplier<ResultContainer_> supplier,
                                    TriFunction<ResultContainer_,A,B,Runnable> accumulator,
                                    Function<ResultContainer_,Result_> finisher)

Method Detail

supplier

public Supplier<ResultContainer_> supplier()

Description copied from interface: BiConstraintCollector

A lambda that creates the result container, one for each group key combination.

Specified by:

supplier in interface BiConstraintCollector<A,B,ResultContainer_,Result_>

Returns:

never null

accumulator

public TriFunction<ResultContainer_,A,B,Runnable> accumulator()

Description copied from interface: BiConstraintCollector

A lambda that extracts data from the matched facts, accumulates it in the result container and returns an undo operation for that accumulation.

Specified by:

accumulator in interface BiConstraintCollector<A,B,ResultContainer_,Result_>

Returns:

never null, the undo operation. This lamdba is called when the facts no longer matches.

finisher

public Function<ResultContainer_,Result_> finisher()

Description copied from interface: BiConstraintCollector

A lambda that converts the result container into the result.

Specified by:

finisher in interface BiConstraintCollector<A,B,ResultContainer_,Result_>

Returns:

never null