KeywordPostingsExtension extension

Extension methods and properties on KeywordPostingsMap.

on

• KeywordPostingsMap

Properties

docIds → Set<String>

Returns all the unique document ids (dStringnt id) in the KeywordPostingsMap.

no setter

keywords → List<String>

Returns the keywords (keys) as an ordered list, sorted alphabetically.

no setter

Methods

addDocKeywordScore(String keyword, String docId, double score) → bool

Adds a keword score for the docId to KeywordPostingsMap entry for the keyword.

containsAll(Iterable<String> keywords) → Set<String>

Returns a Set of dStringnt id of those documents that contain all the keywords.

containsAny(Iterable<String> keywords) → Set<String>

Returns a Set of dStringnt id of those documents that contain any of the keywords. Used for index-elimination as a fist pass in scoring and ranking of search results.

documentPostings(Iterable<String> docIds) → KeywordPostingsMap

Filters the KeywordPostingsMap by document ids.

filter({Iterable<String>? keywords, Iterable<String>? docIds}) → KeywordPostingsMap

Filters the KeywordPostingsMap by keywords AND docIds.

getKeywordsPostings(Iterable<String> keywords) → KeywordPostingsMap

Filters the KeywordPostingsMap by keywords.

keywordPostings(String keyword) → List<MapEntry<String, double>>

Returns the list of all the entries for the keyword from the KeywordPostingsMap.

keywordPostingsList([Iterable<String>? keywords]) → List<MapEntry<String, double>>

Returns the list of all the MapEntry<String, double> for the keywords from the KeywordPostingsMap.