Package org.elasticsearch.search.aggregations

Class BucketCollector

java.lang.Object

org.elasticsearch.search.aggregations.BucketCollector

All Implemented Interfaces:

Collector

Direct Known Subclasses:

Aggregator, DeferringBucketCollector, MultiBucketCollector

public abstract class BucketCollector
extends Object
implements Collector

A Collector that can collect data in separate buckets.

Field Summary

Fields

Modifier and Type	Field	Description
static BucketCollector	NO_OP_COLLECTOR

Constructor Summary

Constructors

Constructor	Description
BucketCollector()

Method Summary

Modifier and Type	Method	Description
abstract LeafBucketCollector	getLeafCollector(LeafReaderContext ctx)	Create a new collector to collect the given context.
abstract void	postCollection()	Post-collection callback.
abstract void	preCollection()	Pre collection callback.

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

scoreMode

Field Detail

NO_OP_COLLECTOR

public static final BucketCollector NO_OP_COLLECTOR

Constructor Detail

BucketCollector

public BucketCollector()

Method Detail

getLeafCollector

public abstract LeafBucketCollector getLeafCollector(LeafReaderContext ctx)
                                              throws IOException

Description copied from interface: Collector

Create a new collector to collect the given context.

Specified by:

getLeafCollector in interface Collector

Parameters:

ctx - next atomic reader context

Throws:

IOException

preCollection

public abstract void preCollection()
                            throws IOException

Pre collection callback.

Throws:

IOException

postCollection

public abstract void postCollection()
                             throws IOException

Post-collection callback.

Throws:

IOException