FacetFieldCollectorManager

java.lang.Object

org.apache.lucene.sandbox.facet.FacetFieldCollectorManager<V>

All Implemented Interfaces:: CollectorManager<FacetFieldCollector,V>

public final class FacetFieldCollectorManager<V extends FacetRecorder> extends Object implements CollectorManager<FacetFieldCollector,V>

Collector manager for FacetFieldCollector. Returns the same extension of FacetRecorder that was used to collect results.

Field Summary

Fields

Modifier and Type

Field

Description

private final FacetCutter

facetCutter

private final V

facetRecorder
Constructor Summary

Constructors

Constructor

Description

FacetFieldCollectorManager(FacetCutter facetCutter, V facetRecorder)

Create collector for a cutter + recorder pair
Method Summary

Modifier and Type

Method

Description

FacetFieldCollector

newCollector()

Return a new Collector.

V

reduce(Collection<FacetFieldCollector> collectors)

Reduce the results of individual collectors into a meaningful result.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- facetCutter
  
  private final FacetCutter facetCutter
- facetRecorder
  
  private final V extends FacetRecorder facetRecorder
Constructor Details
- FacetFieldCollectorManager
  
  public FacetFieldCollectorManager(FacetCutter facetCutter, V facetRecorder)
  
  Create collector for a cutter + recorder pair
Method Details
- newCollector
  
  public FacetFieldCollector newCollector() throws IOException
  
  Description copied from interface: CollectorManager
  
  Return a new Collector. This must return a different instance on each call.
  
  Specified by:
  
  newCollector in interface CollectorManager<FacetFieldCollector,V extends FacetRecorder>
  
  Throws:
  
  IOException
- reduce
  
  public V reduce(Collection<FacetFieldCollector> collectors) throws IOException
  
  Description copied from interface: CollectorManager
  
  Reduce the results of individual collectors into a meaningful result. For instance a TopDocsCollector would compute the top docs of each collector and then merge them using TopDocs.merge(int, TopDocs[]). This method must be called after collection is finished on all provided collectors.
  
  Specified by:
  
  reduce in interface CollectorManager<FacetFieldCollector,V extends FacetRecorder>
  
  Throws:
  
  IOException