org.elasticsearch.search.aggregations.support.MultiValuesSourceAggregatorFactory Maven / Gradle / Ivy
/*
* 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.support;
import org.elasticsearch.search.DocValueFormat;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorFactories;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.CardinalityUpperBound;
import java.io.IOException;
import java.util.Map;
public abstract class MultiValuesSourceAggregatorFactory extends AggregatorFactory {
protected final Map configs;
protected final DocValueFormat format;
public MultiValuesSourceAggregatorFactory(
String name,
Map configs,
DocValueFormat format,
AggregationContext context,
AggregatorFactory parent,
AggregatorFactories.Builder subFactoriesBuilder,
Map metadata
) throws IOException {
super(name, context, parent, subFactoriesBuilder, metadata);
this.configs = configs;
this.format = format;
}
@Override
public Aggregator createInternal(Aggregator parent, CardinalityUpperBound cardinality, Map metadata)
throws IOException {
return doCreateInternal(configs, format, parent, cardinality, metadata);
}
/**
* Create an aggregator that won't collect anything but will return an
* appropriate empty aggregation.
*/
protected abstract Aggregator createUnmapped(Aggregator parent, Map metadata) throws IOException;
/**
* Create the {@linkplain Aggregator}.
*
* @param cardinality Upper bound of the number of {@code owningBucketOrd}s
* that the {@link Aggregator} created by this method
* will be asked to collect.
*/
protected abstract Aggregator doCreateInternal(
Map configs,
DocValueFormat format,
Aggregator parent,
CardinalityUpperBound cardinality,
Map metadata
) throws IOException;
}