mongodb::action

Struct CountDocuments

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pub struct CountDocuments<'a> { /* private fields */ }
Expand description

Get an accurate count of documents. Construct with Collection::count_documents.

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impl<'a> CountDocuments<'a>

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pub fn session(self, value: impl Into<&'a mut ClientSession>) -> Self

Use the provided session when running the operation.

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pub fn with_options(self, value: impl Into<Option<CountOptions>>) -> Self

Set all options. Note that this will replace all previous values set.

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pub fn hint(self, value: Hint) -> Self

The index to use for the operation.

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pub fn limit(self, value: u64) -> Self

The maximum number of documents to count.

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pub fn max_time(self, value: Duration) -> Self

The maximum amount of time to allow the query to run.

This options maps to the maxTimeMS MongoDB query option, so the duration will be sent across the wire as an integer number of milliseconds.

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pub fn skip(self, value: u64) -> Self

The number of documents to skip before counting.

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pub fn collation(self, value: Collation) -> Self

The collation to use for the operation.

See the documentation for more information on how to use this option.

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pub fn selection_criteria(self, value: SelectionCriteria) -> Self

The criteria used to select a server for this operation.

If none specified, the default set on the collection will be used.

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pub fn read_concern(self, value: ReadConcern) -> Self

The level of the read concern.

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pub fn comment(self, value: impl Into<Bson>) -> Self

Tags the query with an arbitrary Bson value to help trace the operation through the database profiler, currentOp and logs.

This option is only available on server versions 4.4+.

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impl<'a> CountDocuments<'a>

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pub fn run(self) -> Result<u64>

Available on crate feature sync only.

Synchronously execute this action.

Trait Implementations§

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impl<'a> Action for CountDocuments<'a>

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fn optional<Value>( self, value: Option<Value>, f: impl FnOnce(Self, Value) -> Self, ) -> Self
where Self: Sized,

If the value is Some, call the provided function on self. Convenient for chained updates with values that need to be set conditionally. For example: Read more
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impl<'a> IntoFuture for CountDocuments<'a>

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type Output = Result<u64, Error>

The output that the future will produce on completion.
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type IntoFuture = CountDocumentsFuture<'a>

Which kind of future are we turning this into?
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fn into_future(self) -> Self::IntoFuture

Creates a future from a value. Read more

Auto Trait Implementations§

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impl<'a> Freeze for CountDocuments<'a>

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impl<'a> !RefUnwindSafe for CountDocuments<'a>

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impl<'a> Send for CountDocuments<'a>

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impl<'a> Sync for CountDocuments<'a>

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impl<'a> Unpin for CountDocuments<'a>

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impl<'a> !UnwindSafe for CountDocuments<'a>

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