Struct tantivy::query::RegexQuery [−][src]
pub struct RegexQuery { /* fields omitted */ }
Expand description
A Regex Query matches all of the documents containing a specific term that matches a regex pattern.
Wildcard queries (e.g. ho*se) can be achieved by converting them to their regex counterparts.
use tantivy::collector::Count;
use tantivy::query::RegexQuery;
use tantivy::schema::{Schema, TEXT};
use tantivy::{doc, Index, Term};
let mut schema_builder = Schema::builder();
let title = schema_builder.add_text_field("title", TEXT);
let schema = schema_builder.build();
let index = Index::create_in_ram(schema);
{
let mut index_writer = index.writer(3_000_000)?;
index_writer.add_document(doc!(
title => "The Name of the Wind",
));
index_writer.add_document(doc!(
title => "The Diary of Muadib",
));
index_writer.add_document(doc!(
title => "A Dairy Cow",
));
index_writer.add_document(doc!(
title => "The Diary of a Young Girl",
));
index_writer.commit().unwrap();
}
let reader = index.reader()?;
let searcher = reader.searcher();
let term = Term::from_field_text(title, "Diary");
let query = RegexQuery::from_pattern("d[ai]{2}ry", title)?;
let count = searcher.search(&query, &Count)?;
assert_eq!(count, 3);
Ok(())
Implementations
Trait Implementations
Create the weight associated to a query. Read more
Returns an Explanation
for the score of the document.
Returns the number of documents matching the query.
Auto Trait Implementations
impl RefUnwindSafe for RegexQuery
impl Send for RegexQuery
impl Sync for RegexQuery
impl Unpin for RegexQuery
impl UnwindSafe for RegexQuery
Blanket Implementations
Mutably borrows from an owned value. Read more
Convert Box<dyn Trait>
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Convert Rc<Trait>
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) to Rc<Any>
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further downcast
into Rc<ConcreteType>
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Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
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Convert &mut Trait
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) to &Any
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