Struct tantivy::query::EmptyQuery
source · pub struct EmptyQuery;
Expand description
EmptyQuery
is a dummy Query
in which no document matches.
It is useful for tests and handling edge cases.
Trait Implementations§
source§impl Clone for EmptyQuery
impl Clone for EmptyQuery
source§fn clone(&self) -> EmptyQuery
fn clone(&self) -> EmptyQuery
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for EmptyQuery
impl Debug for EmptyQuery
source§impl Query for EmptyQuery
impl Query for EmptyQuery
source§fn weight(&self, _enable_scoring: EnableScoring<'_>) -> Result<Box<dyn Weight>>
fn weight(&self, _enable_scoring: EnableScoring<'_>) -> Result<Box<dyn Weight>>
Create the weight associated with a query. Read more
source§fn count(&self, _searcher: &Searcher) -> Result<usize>
fn count(&self, _searcher: &Searcher) -> Result<usize>
Returns the number of documents matching the query.
source§fn explain(
&self,
searcher: &Searcher,
doc_address: DocAddress
) -> Result<Explanation>
fn explain( &self, searcher: &Searcher, doc_address: DocAddress ) -> Result<Explanation>
Returns an
Explanation
for the score of the document.Auto Trait Implementations§
impl Freeze for EmptyQuery
impl RefUnwindSafe for EmptyQuery
impl Send for EmptyQuery
impl Sync for EmptyQuery
impl Unpin for EmptyQuery
impl UnwindSafe for EmptyQuery
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Convert
Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
.source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Convert
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
.source§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert
&Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s.source§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert
&mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s.