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Elasticsearch subproject :server

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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 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */
package org.elasticsearch.search.aggregations.bucket.histogram;

import org.elasticsearch.search.aggregations.bucket.MultiBucketsAggregation;
import org.elasticsearch.xcontent.ParseField;

import java.util.List;

/**
 * A {@code histogram} aggregation. Defines multiple buckets, each representing an interval in a histogram.
 */
public interface Histogram extends MultiBucketsAggregation {

    ParseField INTERVAL_FIELD = new ParseField("interval");
    ParseField OFFSET_FIELD = new ParseField("offset");
    ParseField ORDER_FIELD = new ParseField("order");
    ParseField KEYED_FIELD = new ParseField("keyed");
    ParseField MIN_DOC_COUNT_FIELD = new ParseField("min_doc_count");
    ParseField EXTENDED_BOUNDS_FIELD = new ParseField("extended_bounds");
    ParseField HARD_BOUNDS_FIELD = new ParseField("hard_bounds");

    /**
     * A bucket in the histogram where documents fall in
     */
    interface Bucket extends MultiBucketsAggregation.Bucket {

    }

    /**
     * @return  The buckets of this histogram (each bucket representing an interval in the histogram)
     */
    @Override
    List getBuckets();

}