org.optaplanner.core.impl.score.stream.tri

Class DefaultTriConstraintCollector<A,B,C,ResultContainer_,Result_>

java.lang.Object

org.optaplanner.core.impl.score.stream.tri.DefaultTriConstraintCollector<A,B,C,ResultContainer_,Result_>

All Implemented Interfaces:

TriConstraintCollector<A,B,C,ResultContainer_,Result_>

public final class DefaultTriConstraintCollector<A,B,C,ResultContainer_,Result_>
extends Object
implements TriConstraintCollector<A,B,C,ResultContainer_,Result_>

Constructor Summary

Constructors

Constructor and Description
DefaultTriConstraintCollector(Supplier<ResultContainer_> supplier, QuadFunction<ResultContainer_,A,B,C,Runnable> accumulator, Function<ResultContainer_,Result_> finisher)

Method Summary

Modifier and Type	Method and Description
QuadFunction<ResultContainer_,A,B,C,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

DefaultTriConstraintCollector

public DefaultTriConstraintCollector(Supplier<ResultContainer_> supplier,
                                     QuadFunction<ResultContainer_,A,B,C,Runnable> accumulator,
                                     Function<ResultContainer_,Result_> finisher)

Method Detail

supplier

public Supplier<ResultContainer_> supplier()

Description copied from interface: TriConstraintCollector

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

Specified by:

supplier in interface TriConstraintCollector<A,B,C,ResultContainer_,Result_>

Returns:

never null

accumulator

public QuadFunction<ResultContainer_,A,B,C,Runnable> accumulator()

Description copied from interface: TriConstraintCollector

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 TriConstraintCollector<A,B,C,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: TriConstraintCollector

A lambda that converts the result container into the result.

Specified by:

finisher in interface TriConstraintCollector<A,B,C,ResultContainer_,Result_>

Returns:

never null