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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.bi;

import java.util.Set;
import java.util.function.BiFunction;
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.TriPredicate;

final class IfExistsBiWithUniNode extends AbstractIfExistsNode, C> {

    private final BiFunction mappingAB;
    private final TriPredicate filtering;

    public IfExistsBiWithUniNode(boolean shouldExist,
            BiFunction mappingAB, Function mappingC,
            int inputStoreIndexAB, int inputStoreIndexC,
            TupleLifecycle> tupleLifecycle,
            Indexer, Counter>> indexerAB,
            Indexer, Set>>> indexerC,
            TriPredicate filtering) {
        super(shouldExist, mappingC, inputStoreIndexAB, inputStoreIndexC, tupleLifecycle, indexerAB, indexerC);
        this.mappingAB = mappingAB;
        this.filtering = filtering;
    }

    @Override
    protected IndexProperties createIndexProperties(BiTuple leftTuple) {
        return mappingAB.apply(leftTuple.getFactA(), leftTuple.getFactB());
    }

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

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

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

}