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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.significant;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.search.DocValueFormat;
import org.elasticsearch.search.aggregations.bucket.significant.heuristics.SignificanceHeuristic;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
public abstract class InternalMappedSignificantTerms<
A extends InternalMappedSignificantTerms,
B extends InternalSignificantTerms.Bucket>
extends InternalSignificantTerms {
protected final DocValueFormat format;
protected final long subsetSize;
protected final long supersetSize;
protected final SignificanceHeuristic significanceHeuristic;
protected final List buckets;
protected Map bucketMap;
protected InternalMappedSignificantTerms(String name, int requiredSize, long minDocCount, List pipelineAggregators,
Map metaData, DocValueFormat format, long subsetSize, long supersetSize,
SignificanceHeuristic significanceHeuristic, List buckets) {
super(name, requiredSize, minDocCount, pipelineAggregators, metaData);
this.format = format;
this.buckets = buckets;
this.subsetSize = subsetSize;
this.supersetSize = supersetSize;
this.significanceHeuristic = significanceHeuristic;
}
protected InternalMappedSignificantTerms(StreamInput in, Bucket.Reader bucketReader) throws IOException {
super(in);
format = in.readNamedWriteable(DocValueFormat.class);
subsetSize = in.readVLong();
supersetSize = in.readVLong();
significanceHeuristic = in.readNamedWriteable(SignificanceHeuristic.class);
buckets = in.readList(stream -> bucketReader.read(stream, subsetSize, supersetSize, format));
}
@Override
protected final void writeTermTypeInfoTo(StreamOutput out) throws IOException {
out.writeNamedWriteable(format);
out.writeVLong(subsetSize);
out.writeVLong(supersetSize);
out.writeNamedWriteable(significanceHeuristic);
out.writeList(buckets);
}
@Override
protected List getBucketsInternal() {
return buckets;
}
@Override
public B getBucketByKey(String term) {
if (bucketMap == null) {
bucketMap = buckets.stream().collect(Collectors.toMap(InternalSignificantTerms.Bucket::getKeyAsString, Function.identity()));
}
return bucketMap.get(term);
}
@Override
protected long getSubsetSize() {
return subsetSize;
}
@Override
protected long getSupersetSize() {
return supersetSize;
}
@Override
protected SignificanceHeuristic getSignificanceHeuristic() {
return significanceHeuristic;
}
}