Struct Collection 

pub struct Collection<T = Document>
where
    T: Serialize + DeserializeOwned + Unpin + Debug + Send + Sync,
{ /* private fields */ }

Collection is the client-side abstraction of a MongoDB Collection. It can be used to perform collection-level operations such as CRUD operations. A Collection can be obtained through a Database by calling either Database::collection or Database::collection_with_options.

Collection uses std::sync::Arc internally, so it can safely be shared across threads. For example:

let coll = client.database("items").collection("in_stock");

for i in 0..5 {
    let coll_ref = coll.clone();

    std::thread::spawn(move || {
        // Perform operations with `coll_ref`. For example:
        coll_ref.insert_one(doc! { "x": i }, None);
    });
}

Implementations

impl<T> Collection<T>

where T: Serialize + DeserializeOwned + Unpin + Debug + Send + Sync,

pub fn clone_with_type<U>(&self) -> Collection<U>

where U: Serialize + DeserializeOwned + Unpin + Debug + Send + Sync,

Gets a clone of the Collection with a different type U.

pub fn name(&self) -> &str

Gets the name of the Collection.

pub fn namespace(&self) -> Namespace

Gets the namespace of the Collection.

The namespace of a MongoDB collection is the concatenation of the name of the database containing it, the ‘.’ character, and the name of the collection itself. For example, if a collection named “bar” is created in a database named “foo”, the namespace of the collection is “foo.bar”.

pub fn selection_criteria(&self) -> Option<&SelectionCriteria>

Gets the selection criteria of the Collection.

pub fn read_concern(&self) -> Option<&ReadConcern>

Gets the read concern of the Collection.

pub fn write_concern(&self) -> Option<&WriteConcern>

Gets the write concern of the Collection.

pub fn drop( &self, options: impl Into<Option<DropCollectionOptions>>, ) -> Result<(), Error>

Drops the collection, deleting all data, users, and indexes stored in it.

pub fn aggregate( &self, pipeline: impl IntoIterator<Item = Document>, options: impl Into<Option<AggregateOptions>>, ) -> Result<Cursor, Error>

Runs an aggregation operation.

See the documentation here for more information on aggregations.

pub fn estimated_document_count( &self, options: impl Into<Option<EstimatedDocumentCountOptions>>, ) -> Result<i64, Error>

Estimates the number of documents in the collection using collection metadata.

pub fn count_documents( &self, filter: impl Into<Option<Document>>, options: impl Into<Option<CountOptions>>, ) -> Result<i64, Error>

Gets the number of documents matching filter.

Note that using Collection::estimated_document_count is recommended instead of this method is most cases.

pub fn delete_many( &self, query: Document, options: impl Into<Option<DeleteOptions>>, ) -> Result<DeleteResult, Error>

Deletes all documents stored in the collection matching query.

pub fn delete_one( &self, query: Document, options: impl Into<Option<DeleteOptions>>, ) -> Result<DeleteResult, Error>

Deletes up to one document found matching query.

This operation will retry once upon failure if the connection and encountered error support retryability. See the documentation here for more information on retryable writes.

pub fn distinct( &self, field_name: &str, filter: impl Into<Option<Document>>, options: impl Into<Option<DistinctOptions>>, ) -> Result<Vec<Bson>, Error>

Finds the distinct values of the field specified by field_name across the collection.

pub fn find( &self, filter: impl Into<Option<Document>>, options: impl Into<Option<FindOptions>>, ) -> Result<Cursor<T>, Error>

Finds the documents in the collection matching filter.

pub fn find_one( &self, filter: impl Into<Option<Document>>, options: impl Into<Option<FindOneOptions>>, ) -> Result<Option<T>, Error>

Finds a single document in the collection matching filter.

pub fn find_one_and_delete( &self, filter: Document, options: impl Into<Option<FindOneAndDeleteOptions>>, ) -> Result<Option<T>, Error>

Atomically finds up to one document in the collection matching filter and deletes it.

This operation will retry once upon failure if the connection and encountered error support retryability. See the documentation here for more information on retryable writes.

pub fn find_one_and_replace( &self, filter: Document, replacement: T, options: impl Into<Option<FindOneAndReplaceOptions>>, ) -> Result<Option<T>, Error>

Atomically finds up to one document in the collection matching filter and replaces it with replacement.

This operation will retry once upon failure if the connection and encountered error support retryability. See the documentation here for more information on retryable writes.

pub fn find_one_and_update( &self, filter: Document, update: impl Into<UpdateModifications>, options: impl Into<Option<FindOneAndUpdateOptions>>, ) -> Result<Option<T>, Error>

Atomically finds up to one document in the collection matching filter and updates it. Both Document and Vec<Document> implement Into<UpdateModifications>, so either can be passed in place of constructing the enum case. Note: pipeline updates are only supported in MongoDB 4.2+.

This operation will retry once upon failure if the connection and encountered error support retryability. See the documentation here for more information on retryable writes.

pub fn insert_many( &self, docs: impl IntoIterator<Item = T>, options: impl Into<Option<InsertManyOptions>>, ) -> Result<InsertManyResult, Error>

Inserts the documents in docs into the collection.

This operation will retry once upon failure if the connection and encountered error support retryability. See the documentation here for more information on retryable writes.

pub fn insert_one( &self, doc: T, options: impl Into<Option<InsertOneOptions>>, ) -> Result<InsertOneResult, Error>

Inserts doc into the collection.

This operation will retry once upon failure if the connection and encountered error support retryability. See the documentation here for more information on retryable writes.

pub fn replace_one( &self, query: Document, replacement: T, options: impl Into<Option<ReplaceOptions>>, ) -> Result<UpdateResult, Error>

Replaces up to one document matching query in the collection with replacement.

This operation will retry once upon failure if the connection and encountered error support retryability. See the documentation here for more information on retryable writes.

pub fn update_many( &self, query: Document, update: impl Into<UpdateModifications>, options: impl Into<Option<UpdateOptions>>, ) -> Result<UpdateResult, Error>

Updates all documents matching query in the collection.

Both Document and Vec<Document> implement Into<UpdateModifications>, so either can be passed in place of constructing the enum case. Note: pipeline updates are only supported in MongoDB 4.2+. See the official MongoDB documentation for more information on specifying updates.

pub fn update_one( &self, query: Document, update: impl Into<UpdateModifications>, options: impl Into<Option<UpdateOptions>>, ) -> Result<UpdateResult, Error>

Updates up to one document matching query in the collection.

Both Document and Vec<Document> implement Into<UpdateModifications>, so either can be passed in place of constructing the enum case. Note: pipeline updates are only supported in MongoDB 4.2+. See the official MongoDB documentation for more information on specifying updates.

This operation will retry once upon failure if the connection and encountered error support retryability. See the documentation here for more information on retryable writes.

Trait Implementations

impl<T> Clone for Collection<T>

where T: Clone + Serialize + DeserializeOwned + Unpin + Debug + Send + Sync,

fn clone(&self) -> Collection<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T> Debug for Collection<T>

where T: Debug + Serialize + DeserializeOwned + Unpin + Send + Sync,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.