Struct XuguConnection 

pub struct XuguConnection { /* private fields */ }

Trait Implementations

impl<'c> Acquire<'c> for &'c mut XuguConnection

type Database = Xugu

type Connection = &'c mut <Xugu as Database>::Connection

fn acquire(self) -> BoxFuture<'c, Result<Self::Connection, Error>>

fn begin(self) -> BoxFuture<'c, Result<Transaction<'c, Xugu>, Error>>

impl Connection for XuguConnection

type Database = Xugu

type Options = XuguConnectOptions

fn close(self) -> BoxFuture<'static, Result<(), Error>>

Explicitly close this database connection.

fn ping(&mut self) -> BoxFuture<'_, Result<(), Error>>

Checks if a connection to the database is still valid.

fn begin( &mut self, ) -> BoxFuture<'_, Result<Transaction<'_, Self::Database>, Error>>

where Self: Sized,

Begin a new transaction or establish a savepoint within the active transaction.

fn begin_with( &mut self, statement: impl Into<Cow<'static, str>>, ) -> BoxFuture<'_, Result<Transaction<'_, Self::Database>, Error>>

where Self: Sized,

Begin a new transaction with a custom statement.

fn cached_statements_size(&self) -> usize

The number of statements currently cached in the connection.

fn clear_cached_statements(&mut self) -> BoxFuture<'_, Result<(), Error>>

Removes all statements from the cache, closing them on the server if needed.

fn shrink_buffers(&mut self)

Restore any buffers in the connection to their default capacity, if possible.

fn is_in_transaction(&self) -> bool

Returns true if the connection is currently in a transaction.

fn transaction<'a, F, R, E>( &'a mut self, callback: F, ) -> Pin<Box<dyn Future<Output = Result<R, E>> + Send + 'a>>

where F: for<'c> FnOnce(&'c mut Transaction<'_, Self::Database>) -> Pin<Box<dyn Future<Output = Result<R, E>> + Send + 'c>> + 'a + for<'c> Send + for<'c> Sync, Self: Sized, R: Send, E: From<Error> + Send,

Execute the function inside a transaction.

fn connect( url: &str, ) -> Pin<Box<dyn Future<Output = Result<Self, Error>> + Send>>

where Self: Sized,

Establish a new database connection.

fn connect_with( options: &Self::Options, ) -> Pin<Box<dyn Future<Output = Result<Self, Error>> + Send + '_>>

where Self: Sized,

Establish a new database connection with the provided options.

impl Debug for XuguConnection

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

Formats the value using the given formatter.

impl<'c> Executor<'c> for &'c mut XuguConnection

fn fetch_many<'e, 'q, E>( self, query: E, ) -> BoxStream<'e, Result<Either<XuguQueryResult, XuguRow>, Error>>

where E: Execute<'q, Self::Database> + 'q, 'c: 'e, 'q: 'e,

执行多个查询，并将生成的结果作为每个查询的流返回。

fn fetch_optional<'e, 'q, E>( self, query: E, ) -> BoxFuture<'e, Result<Option<XuguRow>, Error>>

where E: Execute<'q, Self::Database> + 'q, 'c: 'e, 'q: 'e,

执行查询并最多返回一行。

fn prepare_with<'e, 'q: 'e>( self, sql: &'q str, _parameters: &'e [XuguTypeInfo], ) -> BoxFuture<'e, Result<XuguStatement<'q>, Error>>

where 'c: 'e,

准备 SQL 查询，其中包含参数类型信息，以检查有关其参数和结果的类型信息。

只有某些数据库驱动程序（PostgreSQL、MSSQL）可以利用此额外信息来影响参数类型推断。

type Database = Xugu

fn execute<'e, 'q, E>( self, query: E, ) -> Pin<Box<dyn Future<Output = Result<<Self::Database as Database>::QueryResult, Error>> + Send + 'e>>

where 'q: 'e, 'c: 'e, E: 'q + Execute<'q, Self::Database>,

Execute the query and return the total number of rows affected.

fn execute_many<'e, 'q, E>( self, query: E, ) -> Pin<Box<dyn Stream<Item = Result<<Self::Database as Database>::QueryResult, Error>> + Send + 'e>>

where 'q: 'e, 'c: 'e, E: 'q + Execute<'q, Self::Database>,

Execute multiple queries and return the rows affected from each query, in a stream.

fn fetch<'e, 'q, E>( self, query: E, ) -> Pin<Box<dyn Stream<Item = Result<<Self::Database as Database>::Row, Error>> + Send + 'e>>

where 'q: 'e, 'c: 'e, E: 'q + Execute<'q, Self::Database>,

Execute the query and return the generated results as a stream.

fn fetch_all<'e, 'q, E>( self, query: E, ) -> Pin<Box<dyn Future<Output = Result<Vec<<Self::Database as Database>::Row>, Error>> + Send + 'e>>

where 'q: 'e, 'c: 'e, E: 'q + Execute<'q, Self::Database>,

Execute the query and return all the generated results, collected into a Vec.

fn fetch_one<'e, 'q, E>( self, query: E, ) -> Pin<Box<dyn Future<Output = Result<<Self::Database as Database>::Row, Error>> + Send + 'e>>

where 'q: 'e, 'c: 'e, E: 'q + Execute<'q, Self::Database>,

Execute the query and returns exactly one row.

fn prepare<'e, 'q>( self, query: &'q str, ) -> Pin<Box<dyn Future<Output = Result<<Self::Database as Database>::Statement<'q>, Error>> + Send + 'e>>

where 'q: 'e, 'c: 'e,

Prepare the SQL query to inspect the type information of its parameters and results.