org.apache.lucene.facet.associations
Class SumFloatAssociationFacetRequest

java.lang.Object
  org.apache.lucene.facet.search.FacetRequest
      org.apache.lucene.facet.associations.SumFloatAssociationFacetRequest

public class SumFloatAssociationFacetRequest
extends FacetRequest

A FacetRequest for weighting facets according to their float association by summing the association values.

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

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.facet.search.FacetRequest

FacetRequest.ResultMode, FacetRequest.SortOrder

Field Summary

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

categoryPath, numResults

Constructor Summary

SumFloatAssociationFacetRequest(CategoryPath path, int num)
Create a float association facet request for a given node in the taxonomy.

Method Summary

FacetsAggregator

createFacetsAggregator(FacetIndexingParams fip) Returns the FacetsAggregator which can aggregate the categories of this facet request.

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

equals, getDepth, getNumLabel, getResultMode, getSortOrder, hashCode, setDepth, setNumLabel, setResultMode, setSortOrder, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SumFloatAssociationFacetRequest

public SumFloatAssociationFacetRequest(CategoryPath path,
                                       int num)

Create a float association facet request for a given node in the taxonomy.

Method Detail

createFacetsAggregator

public FacetsAggregator createFacetsAggregator(FacetIndexingParams fip)

Description copied from class: FacetRequest

Returns the FacetsAggregator which can aggregate the categories of this facet request. The aggregator is expected to aggregate category values into FacetArrays. If the facet request does not support that, e.g. RangeFacetRequest, it can return null. Note though that such requests require a dedicated FacetsAccumulator.

Specified by:

createFacetsAggregator in class FacetRequest