org.elasticsearch.search.aggregations.bucket

Class DeferringBucketCollector

java.lang.Object

org.elasticsearch.search.aggregations.BucketCollector

org.elasticsearch.search.aggregations.bucket.DeferringBucketCollector

All Implemented Interfaces:

org.apache.lucene.search.Collector

Direct Known Subclasses:

BestBucketsDeferringCollector, BestDocsDeferringCollector

public abstract class DeferringBucketCollector
extends BucketCollector

A BucketCollector that records collected doc IDs and buckets and allows to replay a subset of the collected buckets.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	DeferringBucketCollector.WrappedAggregator

Field Summary

Fields inherited from class org.elasticsearch.search.aggregations.BucketCollector

NO_OP_COLLECTOR

Constructor Summary

Constructors

Constructor and Description
DeferringBucketCollector() Sole constructor.

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	prepareSelectedBuckets(long... selectedBuckets)
void	replay(long... selectedBuckets)
void	setDeferredCollector(Iterable<BucketCollector> deferredCollectors) Set the deferred collectors.
Aggregator	wrap(Aggregator in) Wrap the provided aggregator so that it behaves (almost) as if it had been collected directly.

Methods inherited from class org.elasticsearch.search.aggregations.BucketCollector

getLeafCollector, postCollection, preCollection, wrap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.lucene.search.Collector

needsScores

Constructor Detail

DeferringBucketCollector

public DeferringBucketCollector()

Sole constructor.

Method Detail

setDeferredCollector

public void setDeferredCollector(Iterable<BucketCollector> deferredCollectors)

Set the deferred collectors.

replay

public final void replay(long... selectedBuckets)
                  throws IOException

Throws:

IOException

prepareSelectedBuckets

public abstract void prepareSelectedBuckets(long... selectedBuckets)
                                     throws IOException

Throws:

IOException

wrap

public Aggregator wrap(Aggregator in)

Wrap the provided aggregator so that it behaves (almost) as if it had been collected directly.