All Classes and Interfaces

Class	Description
AllGroupHeadsCollector<T>	This collector specializes in collecting the most relevant document (group head) for each group that matches the query.
AllGroupHeadsCollector.GroupHead<T>	Represents a group head.
AllGroupsCollector<T>	A collector that collects all groups that match the query.
BlockGroupingCollector	BlockGroupingCollector performs grouping with a single pass collector, as long as you are grouping by a doc block field, ie all documents sharing a given group value were indexed as a doc block using the atomic IndexWriter.addDocuments() or IndexWriter.updateDocuments() API.
CollectedSearchGroup<T>	Expert: representation of a group in FirstPassGroupingCollector, tracking the top doc and FieldComparator slot.
DistinctValuesCollector<T,R>	A second pass grouping collector that keeps track of distinct values for a specified field for the top N group.
DistinctValuesCollector.GroupCount<T,R>	Returned by DistinctValuesCollector.getGroups(), representing the value and set of distinct values for the group.
DoubleRange	Represents a contiguous range of double values, with an inclusive minimum and exclusive maximum
DoubleRangeFactory	Groups double values into ranges
DoubleRangeGroupSelector	A GroupSelector implementation that groups documents by double values
FirstPassGroupingCollector<T>	FirstPassGroupingCollector is the first of two passes necessary to collect grouped hits.
GroupDocs<T>	Represents one group in the results.
GroupFacetCollector	Base class for computing grouped facets.
GroupFacetCollector.FacetEntry	Represents a facet entry with a value and a count.
GroupFacetCollector.GroupedFacetResult	The grouped facet result.
GroupFacetCollector.SegmentResult	Contains the local grouped segment counts for a particular segment.
GroupingSearch	Convenience class to perform grouping in a non distributed environment.
GroupReducer<T,C>	Concrete implementations of this class define what to collect for individual groups during the second-pass of a grouping search.
GroupSelector<T>	Defines a group, for use by grouping collectors
GroupSelector.State	What to do with the current value
LongRange	Represents a contiguous range of long values, with an inclusive minimum and exclusive maximum
LongRangeFactory	Groups double values into ranges
LongRangeGroupSelector	A GroupSelector implementation that groups documents by long values
SearchGroup<T>	Represents a group that is found during the first pass search.
SecondPassGroupingCollector<T>	SecondPassGroupingCollector runs over an already collected set of groups, further applying a GroupReducer to each group
TermGroupFacetCollector	An implementation of GroupFacetCollector that computes grouped facets based on the indexed terms from DocValues.
TermGroupSelector	A GroupSelector implementation that groups via SortedDocValues
TopGroups<T>	Represents result returned by a grouping search.
TopGroups.ScoreMergeMode	How the GroupDocs score (if any) should be merged.
TopGroupsCollector<T>	A second-pass collector that collects the TopDocs for each group, and returns them as a TopGroups object
ValueSourceGroupSelector	A GroupSelector that groups via a ValueSource