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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.metrics;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorBase;
import org.elasticsearch.search.aggregations.AggregatorFactories;
import org.elasticsearch.search.aggregations.CardinalityUpperBound;
import org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.support.AggregationContext;
import java.io.IOException;
import java.util.Map;
public abstract class MetricsAggregator extends AggregatorBase {
protected MetricsAggregator(String name, AggregationContext context, Aggregator parent, Map metadata)
throws IOException {
super(name, AggregatorFactories.EMPTY, context, parent, CardinalityUpperBound.NONE, metadata);
/*
* MetricsAggregators may not have sub aggregators so it is safe for
* us to pass NONE for the super ctor's subAggregatorCardinality.
*/
}
/**
* Build an aggregation for data that has been collected into
* {@code owningBucketOrd}.
*/
public abstract InternalAggregation buildAggregation(long owningBucketOrd) throws IOException;
@Override
public final InternalAggregation[] buildAggregations(long[] owningBucketOrds) throws IOException {
InternalAggregation[] results = new InternalAggregation[owningBucketOrds.length];
for (int ordIdx = 0; ordIdx < owningBucketOrds.length; ordIdx++) {
results[ordIdx] = buildAggregation(owningBucketOrds[ordIdx]);
}
return results;
}
}