org.apache.lucene.facet.search
Class MultiFacetsAccumulator

java.lang.Object
  org.apache.lucene.facet.search.FacetsAccumulator
      org.apache.lucene.facet.search.MultiFacetsAccumulator

public class MultiFacetsAccumulator
extends FacetsAccumulator

Wraps multiple FacetsAccumulator and returns a merged list of FacetResult, in the order the accumulators were given.

Field Summary

Fields inherited from class org.apache.lucene.facet.search.FacetsAccumulator

searchParams

Method Summary

List<FacetResult>	accumulate(List<FacetsCollector.MatchingDocs> matchingDocs) Used by FacetsCollector to build the list of facet results that match the facet requests that were given in the constructor.
boolean	requiresDocScores() Used by FacetsCollector to determine if document scores need to be collected in addition to matching documents.
static FacetsAccumulator	wrap(FacetsAccumulator... accumulators) Wraps the given accumulators.

Methods inherited from class org.apache.lucene.facet.search.FacetsAccumulator

create, create, emptyResult

Methods inherited from class java.lang.Object

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

Method Detail

wrap

public static FacetsAccumulator wrap(FacetsAccumulator... accumulators)

Wraps the given accumulators.

requiresDocScores

public boolean requiresDocScores()

Description copied from class: FacetsAccumulator

Used by FacetsCollector to determine if document scores need to be collected in addition to matching documents.

Specified by:

requiresDocScores in class FacetsAccumulator

accumulate

public List<FacetResult> accumulate(List<FacetsCollector.MatchingDocs> matchingDocs)
                             throws IOException

Description copied from class: FacetsAccumulator

Used by FacetsCollector to build the list of facet results that match the facet requests that were given in the constructor.

Specified by:

accumulate in class FacetsAccumulator

Parameters:

matchingDocs - the documents that matched the query, per-segment.

Throws:

IOException