org.optaplanner.constraint.streams.bavet.tri.BavetGroupTriConstraintStream Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of optaplanner-constraint-streams-bavet Show documentation

OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains implementation of Constraint streams (Bavet).

There is a newer version: 10.0.0

Show newest version

package org.optaplanner.constraint.streams.bavet.tri;

import java.util.Set;

import org.optaplanner.constraint.streams.bavet.BavetConstraintFactory;
import org.optaplanner.constraint.streams.bavet.common.BavetAbstractConstraintStream;
import org.optaplanner.constraint.streams.bavet.common.NodeBuildHelper;
import org.optaplanner.core.api.score.Score;
import org.optaplanner.core.api.score.stream.ConstraintStream;

public final class BavetGroupTriConstraintStream
        extends BavetAbstractTriConstraintStream {

    private final BavetAbstractConstraintStream parent;

    public BavetGroupTriConstraintStream(BavetConstraintFactory constraintFactory,
            BavetAbstractConstraintStream parent) {
        super(constraintFactory, parent.getRetrievalSemantics());
        this.parent = parent;
    }

    @Override
    public boolean guaranteesDistinct() {
        return true;
    }

    // ************************************************************************
    // Node creation
    // ************************************************************************

    @Override
    public void collectActiveConstraintStreams(Set> constraintStreamSet) {
        parent.collectActiveConstraintStreams(constraintStreamSet);
        constraintStreamSet.add(this);
    }

    @Override
    public ConstraintStream getTupleSource() {
        return this;
    }

    @Override
    public > void buildNode(NodeBuildHelper buildHelper) {
        // Do nothing. BavetGroupBridgeUniConstraintStream, etc build everything.
    }

    // ************************************************************************
    // Equality for node sharing
    // ************************************************************************

    // TODO

    @Override
    public String toString() {
        return "Group() with " + childStreamList.size() + " children";
    }

    // ************************************************************************
    // Getters/setters
    // ************************************************************************

}