Class NestedAggregator
java.lang.Object
org.elasticsearch.search.aggregations.BucketCollector
org.elasticsearch.search.aggregations.Aggregator
org.elasticsearch.search.aggregations.AggregatorBase
org.elasticsearch.search.aggregations.bucket.BucketsAggregator
org.elasticsearch.search.aggregations.bucket.nested.NestedAggregator
- All Implemented Interfaces:
java.io.Closeable
,java.lang.AutoCloseable
,org.apache.lucene.search.Collector
,Releasable
,SingleBucketAggregator
public class NestedAggregator extends BucketsAggregator implements SingleBucketAggregator
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Nested Class Summary
Nested classes/interfaces inherited from class org.elasticsearch.search.aggregations.Aggregator
Aggregator.BucketComparator, Aggregator.Parser, Aggregator.SubAggCollectionMode
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Field Summary
Fields inherited from class org.elasticsearch.search.aggregations.AggregatorBase
collectableSubAggregators, context, DEFAULT_WEIGHT, name, parent, subAggregators
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Method Summary
Modifier and Type Method Description InternalAggregation
buildAggregation(long owningBucketOrdinal)
Build an aggregation for data that has been collected intobucket
.InternalAggregation
buildEmptyAggregation()
Build an empty aggregation.protected void
doPostCollection()
Can be overridden by aggregator implementation to be called back when the collection phase ends.LeafBucketCollector
getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx, LeafBucketCollector sub)
Get aLeafBucketCollector
for the given ctx, which should delegate to the given collector.protected void
preGetSubLeafCollectors()
Can be overridden by aggregator implementations that like the perform an operation before the leaf collectors of children aggregators are instantiated for the next segment.Methods inherited from class org.elasticsearch.search.aggregations.bucket.BucketsAggregator
bucketAggregations, bucketComparator, bucketDocCount, bucketEmptyAggregations, close, collectBucket, collectExistingBucket, consumeBucketsAndMaybeBreak, getDocCounts, grow, incrementBucketDocCount, maxBucketOrd, mergeBuckets, resolveSortPath
Methods inherited from class org.elasticsearch.search.aggregations.AggregatorBase
addRequestCircuitBreakerBytes, buildEmptySubAggregations, context, doClose, doPreCollection, getLeafCollector, metaData, name, parent, pipelineAggregators, postCollection, preCollection, scoreMode, subAggregator, subAggregators, toString
Methods inherited from class org.elasticsearch.search.aggregations.Aggregator
descendsFromBucketAggregator, resolveSortPathOnValidAgg
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Method Details
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getLeafCollector
public LeafBucketCollector getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx, LeafBucketCollector sub) throws java.io.IOExceptionDescription copied from class:AggregatorBase
Get aLeafBucketCollector
for the given ctx, which should delegate to the given collector.- Specified by:
getLeafCollector
in classAggregatorBase
- Throws:
java.io.IOException
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preGetSubLeafCollectors
protected void preGetSubLeafCollectors() throws java.io.IOExceptionDescription copied from class:AggregatorBase
Can be overridden by aggregator implementations that like the perform an operation before the leaf collectors of children aggregators are instantiated for the next segment.- Overrides:
preGetSubLeafCollectors
in classAggregatorBase
- Throws:
java.io.IOException
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doPostCollection
protected void doPostCollection() throws java.io.IOExceptionDescription copied from class:AggregatorBase
Can be overridden by aggregator implementation to be called back when the collection phase ends.- Overrides:
doPostCollection
in classAggregatorBase
- Throws:
java.io.IOException
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buildAggregation
Description copied from class:Aggregator
Build an aggregation for data that has been collected intobucket
.- Specified by:
buildAggregation
in classAggregator
- Throws:
java.io.IOException
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buildEmptyAggregation
Description copied from class:Aggregator
Build an empty aggregation.- Specified by:
buildEmptyAggregation
in classAggregator
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