| Class | Description | 
|---|---|
| Completion50PostingsFormat | CompletionPostingsFormatfororg.apache.lucene.codecs.lucene50.Lucene50PostingsFormat. | 
| Completion84PostingsFormat | |
| CompletionAnalyzer | Wraps an  Analyzerto provide additional completion-only tuning
 (e.g. | 
| CompletionPostingsFormat | 
 A  PostingsFormatwhich supports document suggestion based on
 indexedSuggestFields. | 
| CompletionQuery | Abstract  Querythat match documents containing terms with a specified prefix
 filtered byBitsProducer. | 
| CompletionScorer | Expert: Responsible for executing the query against an
 appropriate suggester and collecting the results
 via a collector. | 
| CompletionsTermsReader | Holder for suggester and field-level info
 for a suggest field | 
| CompletionTerms | Wrapped  Termsused bySuggestFieldandContextSuggestFieldto access corresponding suggester and their attributes | 
| CompletionTokenStream | A  ConcatenateGraphFilterbut we can set the payload and provide access to config options. | 
| CompletionWeight | Expert: the Weight for CompletionQuery, used to
 score and explain these queries. | 
| ContextQuery | A  CompletionQuerythat matches documents specified by
 a wrappedCompletionQuerysupporting boosting and/or filtering
 by specified contexts. | 
| ContextSuggestField | SuggestFieldwhich additionally takes in a set of
 contexts. | 
| FuzzyCompletionQuery | A  CompletionQuerythat match documents containing terms
 within an edit distance of the specified prefix. | 
| NRTSuggester | 
 NRTSuggester executes Top N search on a weighted FST specified by a  CompletionScorer | 
| PrefixCompletionQuery | A  CompletionQuerywhich takes anAnalyzerto analyze the prefix of the query term. | 
| RegexCompletionQuery | A  CompletionQuerywhich takes a regular expression
 as the prefix of the query term. | 
| SuggestField | 
 Field that indexes a string value and a weight as a weighted completion
 against a named suggester. | 
| SuggestIndexSearcher | Adds document suggest capabilities to IndexSearcher. | 
| TopSuggestDocs | |
| TopSuggestDocs.SuggestScoreDoc | ScoreDocwith an
 additional CharSequence key | 
| TopSuggestDocsCollector | Collectorthat collects completion and
 score, along with document id | 
| Enum | Description | 
|---|---|
| CompletionPostingsFormat.FSTLoadMode | An enum that allows to control if suggester FSTs are loaded into memory or read off-heap | 
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