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## org.apache.lucene.facet.associations
Class SumIntAssociationFacetsAggregator

    java.lang.Object
      org.apache.lucene.facet.associations.SumIntAssociationFacetsAggregator

All Implemented Interfaces:
  FacetsAggregator

    public class SumIntAssociationFacetsAggregator

extends Object
implements FacetsAggregator

A `FacetsAggregator` which computes the weight of a category as the sum of the integer values associated with it in the result documents. Assumes that the association encoded for each ordinal is `CategoryIntAssociation`.

NOTE: this aggregator does not support `rollupValues(FacetRequest, int, int[], int[], FacetArrays)`. It only aggregates the categories for which you added a `CategoryAssociation`.

Constructor Summary
`SumIntAssociationFacetsAggregator()`

Method Summary
`void` | `aggregate(FacetsCollector.MatchingDocs matchingDocs, CategoryListParams clp, FacetArrays facetArrays)` Aggregate the facets found in the given matching documents.
`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.

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

Constructor Detail

### SumIntAssociationFacetsAggregator

    public SumIntAssociationFacetsAggregator()

Method Detail

### aggregate

    public void aggregate(FacetsCollector.MatchingDocs matchingDocs,
                          CategoryListParams clp,
                          FacetArrays facetArrays)
                   throws IOException

  Description copied from interface: `FacetsAggregator`
  Aggregate the facets found in the given matching documents.

  Specified by:
    `aggregate` in interface `FacetsAggregator`
  Throws:
    `IOException`

### requiresDocScores

    public boolean requiresDocScores()

  Description copied from interface: `FacetsAggregator`
  Returns `true` if this aggregator requires document scores.

  Specified by:
    `requiresDocScores` in interface `FacetsAggregator`

### rollupValues

    public void rollupValues(FacetRequest fr,
                             int ordinal,
                             int[] children,
                             int[] siblings,
                             FacetArrays facetArrays)

  Description copied from interface: `FacetsAggregator`
  Rollup the values of the given ordinal. This method is called when a category was indexed with `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.

  Specified by:
    `rollupValues` in interface `FacetsAggregator`

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