Class TopGroups
LUCENENET specific class used to nest types to mimic the syntax used by Lucene (that is, without specifying the generic closing type of TopGroups<TGroupValue>)
Inheritance
Namespace: Lucene.Net.Search.Grouping
Assembly: Lucene.Net.Grouping.dll
Syntax
public class TopGroups : objectMethods
| Improve this Doc View SourceMerge<T>(ITopGroups<T>[], Sort, Sort, Int32, Int32, TopGroups.ScoreMergeMode)
Merges an array of TopGroups, for example obtained from the second-pass collector across multiple shards. Each TopGroups must have been sorted by the same groupSort and docSort, and the top groups passed to all second-pass collectors must be the same.
NOTE: We can't always compute an exact totalGroupCount. Documents belonging to a group may occur on more than one shard and thus the merged totalGroupCount can be higher than the actual totalGroupCount. In this case the totalGroupCount represents a upper bound. If the documents of one group do only reside in one shard then the totalGroupCount is exact.
NOTE: the topDocs in each GroupDocs is actually an instance of TopDocsAndShards
Declaration
public static TopGroups<T> Merge<T>(ITopGroups<T>[] shardGroups, Sort groupSort, Sort docSort, int docOffset, int docTopN, TopGroups.ScoreMergeMode scoreMergeMode)Parameters
| Type | Name | Description |
|---|---|---|
| ITopGroups<T>[] | shardGroups | |
| Sort | groupSort | |
| Sort | docSort | |
| System.Int32 | docOffset | |
| System.Int32 | docTopN | |
| TopGroups.ScoreMergeMode | scoreMergeMode |
Returns
| Type | Description |
|---|---|
| TopGroups<T> |
Type Parameters
| Name | Description |
|---|---|
| T |