Struct mongodb::Database

pub struct Database { /* fields omitted */ }

Database is the client-side abstraction of a MongoDB database. It can be used to perform database-level operations or to obtain handles to specific collections within the database. A Database can only be obtained through a Client by calling either Client::database or Client::database_with_options.

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

 

let db = client.database("items");

for i in 0..5 {
    let db_ref = db.clone();

    std::thread::spawn(move || {
        let collection = db_ref.collection(&format!("coll{}", i));

        // Do something with the collection
    });
}

Methods

impl Database

pub fn name(&self) -> &str

Gets the name of the Database.

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

Gets the read preference of the Database.

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

Gets the read concern of the Database.

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

Gets the write concern of the Database.

pub fn collection(&self, name: &str) -> Collection

Gets a handle to a collection specified by name of the database. The Collection options (e.g. read preference and write concern) will default to those of the Database.

This method does not send or receive anything across the wire to the database, so it can be used repeatedly without incurring any costs from I/O.

pub fn collection_with_options(
    &self,
    name: &str,
    options: CollectionOptions
) -> Collection

Gets a handle to a collection specified by name in the cluster the Client is connected to. Operations done with this Collection will use the options specified by options by default and will otherwise default to those of the Database.

This method does not send or receive anything across the wire to the database, so it can be used repeatedly without incurring any costs from I/O.

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

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

pub fn list_collections(
    &self,
    filter: impl Into<Option<Document>>,
    options: impl Into<Option<ListCollectionsOptions>>
) -> Result<Cursor>

Gets information about each of the collections in the database. The cursor will yield a document pertaining to each collection in the database.

pub fn list_collection_names(
    &self,
    filter: impl Into<Option<Document>>
) -> Result<Vec<String>>

Gets the names of the collections in the database.

pub fn create_collection(
    &self,
    name: &str,
    options: impl Into<Option<CreateCollectionOptions>>
) -> Result<()>

Creates a new collection in the database with the given name and options.

Note that MongoDB creates collections implicitly when data is inserted, so this method is not needed if no special options are required.

pub fn run_command(
    &self,
    command: Document,
    selection_criteria: impl Into<Option<SelectionCriteria>>
) -> Result<Document>

Runs a database-level command.

Note that no inspection is done on doc, so the command will not use the database's default read concern or write concern. If specific read concern or write concern is desired, it must be specified manually.

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

Runs an aggregation operation.

See the documentation here for more information on aggregations.

Trait Implementations

impl Clone for Database

fn clone(&self) -> Database

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Database

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.