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/*
* 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.
*/
package org.elasticsearch.search.aggregations.bucket.filter;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Weight;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorFactories;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.InternalAggregation.Type;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.aggregations.support.AggregationContext;
import java.io.IOException;
import java.util.List;
import java.util.Map;
public class FilterAggregatorFactory extends AggregatorFactory<FilterAggregatorFactory> {
private final Weight weight;
public FilterAggregatorFactory(String name, Type type, QueryBuilder<?> filterBuilder, AggregationContext context,
AggregatorFactory<?> parent, AggregatorFactories.Builder subFactoriesBuilder, Map<String, Object> metaData) throws IOException {
super(name, type, context, parent, subFactoriesBuilder, metaData);
IndexSearcher contextSearcher = context.searchContext().searcher();
Query filter = filterBuilder.toQuery(context.searchContext().getQueryShardContext());
weight = contextSearcher.createNormalizedWeight(filter, false);
}
@Override
public Aggregator createInternal(Aggregator parent, boolean collectsFromSingleBucket, List<PipelineAggregator> pipelineAggregators,
Map<String, Object> metaData) throws IOException {
return new FilterAggregator(name, weight, factories, context, parent, pipelineAggregators, metaData);
}
}
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