org.elasticsearch.compute.aggregation.SumLongAggregator Maven / Gradle / Ivy

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/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0; you may not use this file except in compliance with the Elastic License
 * 2.0.
 */

package org.elasticsearch.compute.aggregation;

import org.elasticsearch.compute.ann.Aggregator;
import org.elasticsearch.compute.ann.GroupingAggregator;
import org.elasticsearch.compute.ann.IntermediateState;

@Aggregator({ @IntermediateState(name = "sum", type = "LONG"), @IntermediateState(name = "seen", type = "BOOLEAN") })
@GroupingAggregator
class SumLongAggregator {

    public static long init() {
        return 0;
    }

    public static long combine(long current, long v) {
        return Math.addExact(current, v);
    }
}