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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).

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

import java.util.Set;
import java.util.function.Function;

import org.optaplanner.constraint.streams.bavet.common.AbstractIfExistsNode;
import org.optaplanner.constraint.streams.bavet.common.TupleLifecycle;
import org.optaplanner.constraint.streams.bavet.common.index.IndexProperties;
import org.optaplanner.constraint.streams.bavet.common.index.Indexer;
import org.optaplanner.constraint.streams.bavet.uni.UniTuple;
import org.optaplanner.core.api.function.QuadPredicate;
import org.optaplanner.core.api.function.TriFunction;

final class IfExistsTriWithUniNode extends AbstractIfExistsNode, D> {

    private final TriFunction mappingABC;
    private final QuadPredicate filtering;

    public IfExistsTriWithUniNode(boolean shouldExist,
            TriFunction mappingABC, Function mappingD,
            int inputStoreIndexABC, int inputStoreIndexD,
            TupleLifecycle> nextNodesTupleLifecycle,
            Indexer, Counter>> indexerABC,
            Indexer, Set>>> indexerD,
            QuadPredicate filtering) {
        super(shouldExist, mappingD, inputStoreIndexABC, inputStoreIndexD, nextNodesTupleLifecycle, indexerABC,
                indexerD);
        this.mappingABC = mappingABC;
        this.filtering = filtering;
    }

    @Override
    protected IndexProperties createIndexProperties(TriTuple leftTuple) {
        return mappingABC.apply(leftTuple.getFactA(), leftTuple.getFactB(), leftTuple.getFactC());
    }

    @Override
    protected boolean isFiltering() {
        return filtering != null;
    }

    @Override
    protected boolean isFiltered(TriTuple leftTuple, UniTuple rightTuple) {
        return filtering.test(leftTuple.getFactA(), leftTuple.getFactB(), leftTuple.getFactC(), rightTuple.getFactA());
    }

    @Override
    public String toString() {
        return "IfExistsTriWithUniNode";
    }

}