org.elasticsearch.search.aggregations.bucket.nested.NestedAggregatorFactory Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* 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.nested;
import org.elasticsearch.index.mapper.NestedObjectMapper;
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 org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.NonCollectingAggregator;
import org.elasticsearch.search.aggregations.support.AggregationContext;
import java.io.IOException;
import java.util.Map;
public class NestedAggregatorFactory extends AggregatorFactory {
private final NestedObjectMapper parentObjectMapper;
private final NestedObjectMapper childObjectMapper;
NestedAggregatorFactory(
String name,
NestedObjectMapper parentObjectMapper,
NestedObjectMapper childObjectMapper,
AggregationContext context,
AggregatorFactory parent,
AggregatorFactories.Builder subFactories,
Map metadata
) throws IOException {
super(name, context, parent, subFactories, metadata);
this.parentObjectMapper = parentObjectMapper;
this.childObjectMapper = childObjectMapper;
}
@Override
public Aggregator createInternal(Aggregator parent, CardinalityUpperBound cardinality, Map metadata)
throws IOException {
if (childObjectMapper == null) {
return new Unmapped(name, context, parent, factories, metadata);
}
return new NestedAggregator(name, factories, parentObjectMapper, childObjectMapper, context, parent, cardinality, metadata);
}
private static final class Unmapped extends NonCollectingAggregator {
Unmapped(String name, AggregationContext context, Aggregator parent, AggregatorFactories factories, Map metadata)
throws IOException {
super(name, context, parent, factories, metadata);
}
@Override
public InternalAggregation buildEmptyAggregation() {
return new InternalNested(name, 0, buildEmptySubAggregations(), metadata());
}
}
}