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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.uni;

import java.util.Set;
import java.util.function.BiPredicate;
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;

final class IfExistsUniWithUniNode extends AbstractIfExistsNode, B> {

    private final Function mappingA;
    private final BiPredicate filtering;

    public IfExistsUniWithUniNode(boolean shouldExist,
            Function mappingA, Function mappingB,
            int inputStoreIndexA, int inputStoreIndexB,
            TupleLifecycle> nextNodesTupleLifecycle,
            Indexer, Counter>> indexerA,
            Indexer, Set>>> indexerB,
            BiPredicate filtering) {
        super(shouldExist, mappingB, inputStoreIndexA, inputStoreIndexB, nextNodesTupleLifecycle, indexerA, indexerB);
        this.mappingA = mappingA;
        this.filtering = filtering;
    }

    @Override
    protected IndexProperties createIndexProperties(UniTuple leftTuple) {
        return mappingA.apply(leftTuple.getFactA());
    }

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

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

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

}