Class BucketCollector
- java.lang.Object
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- org.elasticsearch.search.aggregations.BucketCollector
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- All Implemented Interfaces:
org.apache.lucene.search.Collector
- Direct Known Subclasses:
Aggregator
,DeferringBucketCollector
,MultiBucketCollector
public abstract class BucketCollector extends java.lang.Object implements org.apache.lucene.search.Collector
A Collector that can collect data in separate buckets.
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Field Summary
Fields Modifier and Type Field Description static BucketCollector
NO_OP_COLLECTOR
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Constructor Summary
Constructors Constructor Description BucketCollector()
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Method Summary
Modifier and Type Method Description abstract LeafBucketCollector
getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx)
abstract void
postCollection()
Post-collection callback.abstract void
preCollection()
Pre collection callback.
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Field Detail
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NO_OP_COLLECTOR
public static final BucketCollector NO_OP_COLLECTOR
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Method Detail
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getLeafCollector
public abstract LeafBucketCollector getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx) throws java.io.IOException
- Specified by:
getLeafCollector
in interfaceorg.apache.lucene.search.Collector
- Throws:
java.io.IOException
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preCollection
public abstract void preCollection() throws java.io.IOException
Pre collection callback.- Throws:
java.io.IOException
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postCollection
public abstract void postCollection() throws java.io.IOException
Post-collection callback.- Throws:
java.io.IOException
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