org.elasticsearch.search.aggregations.bucket.adjacency.AdjacencyMatrixAggregatorFactory Maven / Gradle / Ivy
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package org.elasticsearch.search.aggregations.bucket.adjacency;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreMode;
import org.apache.lucene.search.Weight;
import org.elasticsearch.index.query.QueryShardContext;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorFactories;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.bucket.adjacency.AdjacencyMatrixAggregator.KeyedFilter;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.internal.SearchContext;
import java.io.IOException;
import java.util.List;
import java.util.Map;
public class AdjacencyMatrixAggregatorFactory extends AggregatorFactory {
private final String[] keys;
private final Weight[] weights;
private final String separator;
public AdjacencyMatrixAggregatorFactory(String name, List filters, String separator,
QueryShardContext queryShardContext, AggregatorFactory parent,
AggregatorFactories.Builder subFactories, Map metaData) throws IOException {
super(name, queryShardContext, parent, subFactories, metaData);
IndexSearcher contextSearcher = queryShardContext.searcher();
this.separator = separator;
weights = new Weight[filters.size()];
keys = new String[filters.size()];
for (int i = 0; i < filters.size(); ++i) {
KeyedFilter keyedFilter = filters.get(i);
this.keys[i] = keyedFilter.key();
Query filter = keyedFilter.filter().toQuery(queryShardContext);
this.weights[i] = contextSearcher.createWeight(contextSearcher.rewrite(filter), ScoreMode.COMPLETE_NO_SCORES, 1f);
}
}
@Override
public Aggregator createInternal(SearchContext searchContext,
Aggregator parent,
boolean collectsFromSingleBucket,
List pipelineAggregators,
Map metaData) throws IOException {
return new AdjacencyMatrixAggregator(name, factories, separator, keys, weights, searchContext, parent,
pipelineAggregators, metaData);
}
}