org.elasticsearch.search.aggregations.bucket.missing.MissingAggregator 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
/*
* 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.missing;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.util.Bits;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorFactories;
import org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.LeafBucketCollector;
import org.elasticsearch.search.aggregations.LeafBucketCollectorBase;
import org.elasticsearch.search.aggregations.bucket.SingleBucketAggregator;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.aggregations.support.AggregationContext;
import org.elasticsearch.search.aggregations.support.ValuesSource;
import org.elasticsearch.search.aggregations.support.ValuesSourceAggregatorFactory;
import org.elasticsearch.search.aggregations.support.ValuesSourceConfig;
import java.io.IOException;
import java.util.List;
import java.util.Map;
/**
*
*/
public class MissingAggregator extends SingleBucketAggregator {
private final ValuesSource valuesSource;
public MissingAggregator(String name, AggregatorFactories factories, ValuesSource valuesSource,
AggregationContext aggregationContext, Aggregator parent, List pipelineAggregators,
Map metaData) throws IOException {
super(name, factories, aggregationContext, parent, pipelineAggregators, metaData);
this.valuesSource = valuesSource;
}
@Override
public LeafBucketCollector getLeafCollector(LeafReaderContext ctx,
final LeafBucketCollector sub) throws IOException {
final Bits docsWithValue;
if (valuesSource != null) {
docsWithValue = valuesSource.docsWithValue(ctx);
} else {
docsWithValue = new Bits.MatchNoBits(ctx.reader().maxDoc());
}
return new LeafBucketCollectorBase(sub, docsWithValue) {
@Override
public void collect(int doc, long bucket) throws IOException {
if (docsWithValue != null && !docsWithValue.get(doc)) {
collectBucket(sub, doc, bucket);
}
}
};
}
@Override
public InternalAggregation buildAggregation(long owningBucketOrdinal) throws IOException {
return new InternalMissing(name, bucketDocCount(owningBucketOrdinal), bucketAggregations(owningBucketOrdinal), pipelineAggregators(),
metaData());
}
@Override
public InternalAggregation buildEmptyAggregation() {
return new InternalMissing(name, 0, buildEmptySubAggregations(), pipelineAggregators(), metaData());
}
public static class Factory extends ValuesSourceAggregatorFactory {
public Factory(String name, ValuesSourceConfig valueSourceConfig) {
super(name, InternalMissing.TYPE.name(), valueSourceConfig);
}
@Override
protected MissingAggregator createUnmapped(AggregationContext aggregationContext, Aggregator parent, List pipelineAggregators,
Map metaData) throws IOException {
return new MissingAggregator(name, factories, null, aggregationContext, parent, pipelineAggregators, metaData);
}
@Override
protected MissingAggregator doCreateInternal(ValuesSource valuesSource, AggregationContext aggregationContext, Aggregator parent,
boolean collectsFromSingleBucket, List pipelineAggregators, Map metaData) throws IOException {
return new MissingAggregator(name, factories, valuesSource, aggregationContext, parent, pipelineAggregators, metaData);
}
}
}