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.bucket.BucketsAggregator
BucketsAggregator.BucketBuilderForFixedCount<B>, BucketsAggregator.BucketBuilderForVariable<B>, BucketsAggregator.ResultBuilderForVariable<B>, BucketsAggregator.SingleBucketResultBuilder
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.bucket.BucketsAggregator
docCountProvider
Fields inherited from class org.elasticsearch.search.aggregations.AggregatorBase
collectableSubAggregators, DEFAULT_WEIGHT, name, parent, subAggregators
Fields inherited from class org.elasticsearch.search.aggregations.BucketCollector
NO_OP_COLLECTOR
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Method Summary
Modifier and Type Method Description InternalAggregation[]
buildAggregations(long[] owningBucketOrds)
Build the results of this aggregation.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(org.apache.lucene.index.LeafReaderContext ctx)
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
bucketComparator, bucketDocCount, buildAggregationsForFixedBucketCount, buildAggregationsForSingleBucket, buildAggregationsForVariableBuckets, buildSubAggsForAllBuckets, buildSubAggsForBuckets, buildSubAggsForBuckets, close, collectBucket, collectExistingBucket, descendsFromGlobalAggregator, getDocCounts, grow, incrementBucketDocCount, maxBucketOrd, prepareSubAggs, resolveSortPath, rewriteBuckets
Methods inherited from class org.elasticsearch.search.aggregations.AggregatorBase
addRequestCircuitBreakerBytes, bigArrays, buildEmptySubAggregations, doClose, doPreCollection, getLeafCollector, metadata, name, parent, pointReaderIfAvailable, postCollection, preCollection, scoreMode, searcher, subAggregator, subAggregators, topLevelQuery, toString
Methods inherited from class org.elasticsearch.search.aggregations.Aggregator
buildTopLevel, collectDebugInfo, resolveSortPathOnValidAgg
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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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(org.apache.lucene.index.LeafReaderContext ctx) 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 classBucketsAggregator
- 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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buildAggregations
Description copied from class:Aggregator
Build the results of this aggregation.- Specified by:
buildAggregations
in classAggregator
- Parameters:
owningBucketOrds
- the ordinals of the buckets that we want to collect from this aggregation- Returns:
- the results for each ordinal, in the same order as the array of ordinals
- 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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