Enum xapian_rusty::FeatureFlag

#[repr(i16)]pub enum FeatureFlag {
    FlagBoolean,
    FlagPhrase,
    FlagLovehate,
    FlagBooleanAnyCase,
    FlagWildcard,
    FlagPureNot,
    FlagPartial,
    FlagSpellingCorrection,
    FlagSynonym,
    FlagAutoSynonyms,
    FlagAutoMultiwordSynonyms,
    FlagDefault,
}

Enum of feature flag

Variants

FlagBoolean

Support AND, OR, etc and bracketed subexpressions.

FlagPhrase

Support quoted phrases.

FlagLovehate

Support + and -.

FlagBooleanAnyCase

Support AND, OR, etc even if they aren't in ALLCAPS.

FlagWildcard

Support right truncation (e.g. Xap*). * * Currently you can't use wildcards with boolean filter prefixes, * or in a phrase (either an explicitly quoted one, or one implicitly * generated by hyphens or other punctuation). * * NB: You need to tell the QueryParser object which database to * expand wildcards from by calling set_database.

FlagPureNot

Allow queries such as 'NOT apples'. * * These require the use of a list of all documents in the database * which is potentially expensive, so this feature isn't enabled by * default.

FlagPartial

Enable partial matching. * * Partial matching causes the parser to treat the query as a * "partially entered" search. This will automatically treat the * final word as a wildcarded match, unless it is followed by * whitespace, to produce more stable results from interactive * searches. * * Currently FLAG_PARTIAL doesn't do anything if the final word * in the query has a boolean filter prefix, or if it is in a phrase * (either an explicitly quoted one, or one implicitly generated by * hyphens or other punctuation). It also doesn't do anything if * if the final word is part of a value range. * * NB: You need to tell the QueryParser object which database to * expand wildcards from by calling set_database.

FlagSpellingCorrection

Enable spelling correction. * * For each word in the query which doesn't exist as a term in the * database, Database::get_spelling_suggestion() will be called and if * a suggestion is returned, a corrected version of the query string * will be built up which can be read using * QueryParser::get_corrected_query_string(). The query returned is * based on the uncorrected query string however - if you want a * parsed query based on the corrected query string, you must call * QueryParser::parse_query() again. * * NB: You must also call set_database() for this to work.

FlagSynonym

Enable synonym operator '~'. * * NB: You must also call set_database() for this to work.

FlagAutoSynonyms

Enable automatic use of synonyms for single terms. * * NB: You must also call set_database() for this to work.

FlagAutoMultiwordSynonyms

Enable automatic use of synonyms for single terms and groups of * terms. * * NB: You must also call set_database() for this to work.

FlagDefault

The default flags. * * Used if you don't explicitly pass any to @a parse_query(). * The default flags are FLAG_PHRASE|FLAG_BOOLEAN|FLAG_LOVEHATE. * * Added in Xapian 1.0.11.