org.apache.lucene.facet.old
Class AdaptiveFacetsAccumulator

java.lang.Object
  org.apache.lucene.facet.search.FacetsAccumulator
      org.apache.lucene.facet.search.TaxonomyFacetsAccumulator
          org.apache.lucene.facet.old.OldFacetsAccumulator
              org.apache.lucene.facet.old.AdaptiveFacetsAccumulator

public final class AdaptiveFacetsAccumulator
extends OldFacetsAccumulator

FacetsAccumulator whose behavior regarding complements, sampling, etc. is not set up front but rather is determined at accumulation time according to the statistics of the accumulated set of documents and the index.

Note: Sampling accumulation (Accumulation over a sampled-set of the results), does not guarantee accurate values for FacetResult.getNumValidDescendants().

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary

Fields inherited from class org.apache.lucene.facet.old.OldFacetsAccumulator

DEFAULT_COMPLEMENT_THRESHOLD, DISABLE_COMPLEMENT, FORCE_COMPLEMENT, isUsingComplements, maxPartitions, partitionSize

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

facetArrays, indexReader, taxonomyReader

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

searchParams

Constructor Summary

AdaptiveFacetsAccumulator(FacetSearchParams searchParams, IndexReader indexReader, TaxonomyReader taxonomyReader)
Create an AdaptiveFacetsAccumulator

AdaptiveFacetsAccumulator(FacetSearchParams searchParams, IndexReader indexReader, TaxonomyReader taxonomyReader, FacetArrays facetArrays)
Create an AdaptiveFacetsAccumulator

Method Summary

List<FacetResult>	accumulate(ScoredDocIDs docids)
Sampler	getSampler()
void	setSampler(Sampler sampler) Set the sampler.

Methods inherited from class org.apache.lucene.facet.old.OldFacetsAccumulator

accumulate, actualDocsToAccumulate, createAggregator, createFacetResultsHandler, createOrdinalValueResolver, getCategoryListMap, getComplementThreshold, getTotalCountsFactor, isUsingComplements, mayComplement, setComplementThreshold, shouldComplement

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

getAggregator, groupRequests, requiresDocScores

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

Constructor Detail

AdaptiveFacetsAccumulator

public AdaptiveFacetsAccumulator(FacetSearchParams searchParams,
                                 IndexReader indexReader,
                                 TaxonomyReader taxonomyReader)

Create an AdaptiveFacetsAccumulator

See Also:

OldFacetsAccumulator.OldFacetsAccumulator(FacetSearchParams, IndexReader, TaxonomyReader)

AdaptiveFacetsAccumulator

public AdaptiveFacetsAccumulator(FacetSearchParams searchParams,
                                 IndexReader indexReader,
                                 TaxonomyReader taxonomyReader,
                                 FacetArrays facetArrays)

Create an AdaptiveFacetsAccumulator

See Also:

OldFacetsAccumulator.OldFacetsAccumulator(FacetSearchParams, IndexReader, TaxonomyReader, FacetArrays)

Method Detail

setSampler

public void setSampler(Sampler sampler)

Set the sampler.

Parameters:

sampler - sampler to set

accumulate

public List<FacetResult> accumulate(ScoredDocIDs docids)
                             throws IOException

Overrides:

accumulate in class OldFacetsAccumulator

Throws:

IOException

getSampler

public final Sampler getSampler()

Returns:

the sampler in effect