org.apache.lucene.facet.search
public abstract class IntRollupFacetsAggregator extends Object implements FacetsAggregator
FacetsAggregator
which implements
rollupValues(FacetRequest, int, int[], int[], FacetArrays)
by
summing the values from FacetArrays.getIntArray()
. Extending classes
should only implement aggregate(org.apache.lucene.facet.search.FacetsCollector.MatchingDocs, org.apache.lucene.facet.params.CategoryListParams, org.apache.lucene.facet.search.FacetArrays)
. Also, requiresDocScores()
always returns false.Constructor and Description |
---|
IntRollupFacetsAggregator() |
Modifier and Type | Method and Description |
---|---|
abstract void |
aggregate(FacetsCollector.MatchingDocs matchingDocs,
CategoryListParams clp,
FacetArrays facetArrays)
Aggregate the facets found in the given matching documents.
|
OrdinalValueResolver |
createOrdinalValueResolver(FacetRequest facetRequest,
FacetArrays arrays)
Creates the appropriate
OrdinalValueResolver for this aggregator
and the given FacetRequest . |
boolean |
requiresDocScores()
Returns
true if this aggregator requires document scores. |
void |
rollupValues(FacetRequest fr,
int ordinal,
int[] children,
int[] siblings,
FacetArrays facetArrays)
Rollup the values of the given ordinal.
|
public abstract void aggregate(FacetsCollector.MatchingDocs matchingDocs, CategoryListParams clp, FacetArrays facetArrays) throws IOException
FacetsAggregator
aggregate
in interface FacetsAggregator
IOException
public final void rollupValues(FacetRequest fr, int ordinal, int[] children, int[] siblings, FacetArrays facetArrays)
FacetsAggregator
CategoryListParams.OrdinalPolicy.NO_PARENTS
. The given
ordinal is the requested category, and you should use the children and
siblings arrays to traverse its sub-tree.rollupValues
in interface FacetsAggregator
public final boolean requiresDocScores()
FacetsAggregator
true
if this aggregator requires document scores.requiresDocScores
in interface FacetsAggregator
public OrdinalValueResolver createOrdinalValueResolver(FacetRequest facetRequest, FacetArrays arrays)
FacetsAggregator
OrdinalValueResolver
for this aggregator
and the given FacetRequest
. The request is passed so that compound
aggregators can return the correct OrdinalValueResolver
.createOrdinalValueResolver
in interface FacetsAggregator
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