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/*
* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*/
package org.opensearch.search.aggregations.bucket.histogram;
import org.opensearch.common.collect.List;
import org.opensearch.index.query.QueryShardContext;
import org.opensearch.search.aggregations.Aggregator;
import org.opensearch.search.aggregations.AggregatorFactories;
import org.opensearch.search.aggregations.AggregatorFactory;
import org.opensearch.search.aggregations.BucketOrder;
import org.opensearch.search.aggregations.CardinalityUpperBound;
import org.opensearch.search.aggregations.support.CoreValuesSourceType;
import org.opensearch.search.aggregations.support.ValuesSourceAggregatorFactory;
import org.opensearch.search.aggregations.support.ValuesSourceConfig;
import org.opensearch.search.aggregations.support.ValuesSourceRegistry;
import org.opensearch.search.internal.SearchContext;
import java.io.IOException;
import java.util.Map;
/**
* Constructs the per-shard aggregator instance for histogram aggregation. Selects the numeric or range field implementation based on the
* field type.
*/
public final class HistogramAggregatorFactory extends ValuesSourceAggregatorFactory {
private final double interval, offset;
private final BucketOrder order;
private final boolean keyed;
private final long minDocCount;
private final DoubleBounds extendedBounds;
private final DoubleBounds hardBounds;
static void registerAggregators(ValuesSourceRegistry.Builder builder) {
builder.register(HistogramAggregationBuilder.REGISTRY_KEY, CoreValuesSourceType.RANGE, RangeHistogramAggregator::new, true);
builder.register(
HistogramAggregationBuilder.REGISTRY_KEY,
List.of(CoreValuesSourceType.NUMERIC, CoreValuesSourceType.DATE, CoreValuesSourceType.BOOLEAN),
NumericHistogramAggregator::new,
true
);
}
public HistogramAggregatorFactory(
String name,
ValuesSourceConfig config,
double interval,
double offset,
BucketOrder order,
boolean keyed,
long minDocCount,
DoubleBounds extendedBounds,
DoubleBounds hardBounds,
QueryShardContext queryShardContext,
AggregatorFactory parent,
AggregatorFactories.Builder subFactoriesBuilder,
Map metadata
) throws IOException {
super(name, config, queryShardContext, parent, subFactoriesBuilder, metadata);
this.interval = interval;
this.offset = offset;
this.order = order;
this.keyed = keyed;
this.minDocCount = minDocCount;
this.extendedBounds = extendedBounds;
this.hardBounds = hardBounds;
}
public long minDocCount() {
return minDocCount;
}
@Override
protected Aggregator doCreateInternal(
SearchContext searchContext,
Aggregator parent,
CardinalityUpperBound cardinality,
Map metadata
) throws IOException {
return queryShardContext.getValuesSourceRegistry()
.getAggregator(HistogramAggregationBuilder.REGISTRY_KEY, config)
.build(
name,
factories,
interval,
offset,
order,
keyed,
minDocCount,
extendedBounds,
hardBounds,
config,
searchContext,
parent,
cardinality,
metadata
);
}
@Override
protected Aggregator createUnmapped(SearchContext searchContext, Aggregator parent, Map metadata) throws IOException {
return new NumericHistogramAggregator(
name,
factories,
interval,
offset,
order,
keyed,
minDocCount,
extendedBounds,
hardBounds,
config,
searchContext,
parent,
CardinalityUpperBound.NONE,
metadata
);
}
}