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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.function.Function;

import org.optaplanner.constraint.streams.bavet.common.AbstractGroupNode;
import org.optaplanner.constraint.streams.bavet.common.Tuple;
import org.optaplanner.constraint.streams.bavet.common.TupleLifecycle;
import org.optaplanner.core.api.function.QuadFunction;
import org.optaplanner.core.api.score.stream.tri.TriConstraintCollector;

abstract class AbstractGroupTriNode
        extends
        AbstractGroupNode, OutTuple_, MutableOutTuple_, GroupKey_, ResultContainer_, Result_> {

    private final QuadFunction accumulator;

    protected AbstractGroupTriNode(int groupStoreIndex,
            Function, GroupKey_> groupKeyFunction,
            TriConstraintCollector collector,
            TupleLifecycle nextNodesTupleLifecycle) {
        super(groupStoreIndex, groupKeyFunction,
                collector == null ? null : collector.supplier(),
                collector == null ? null : collector.finisher(),
                nextNodesTupleLifecycle);
        accumulator = collector == null ? null : collector.accumulator();
    }

    @Override
    protected final Runnable accumulate(ResultContainer_ resultContainer, TriTuple tuple) {
        return accumulator.apply(resultContainer, tuple.getFactA(), tuple.getFactB(), tuple.getFactC());
    }

}