Struct AnyConnection 

pub struct AnyConnection { /* private fields */ }

后端无关的连接

Implementations

impl AnyConnection

pub fn backend(&self) -> AnyBackend

获取后端类型

Trait Implementations

impl Connection for AnyConnection

fn execute<'a>( &'a mut self, sql: &'a str, ) -> Pin<Box<dyn Future<Output = Result<u64, DbError>> + Send + 'a>>

fn query<'a>( &'a mut self, sql: &'a str, ) -> Pin<Box<dyn Future<Output = Result<QueryRows, DbError>> + Send + 'a>>

fn begin_transaction<'a>( &'a mut self, ) -> Pin<Box<dyn Future<Output = Result<(), DbError>> + Send + 'a>>

fn commit<'a>( &'a mut self, ) -> Pin<Box<dyn Future<Output = Result<(), DbError>> + Send + 'a>>

fn rollback<'a>( &'a mut self, ) -> Pin<Box<dyn Future<Output = Result<(), DbError>> + Send + 'a>>

fn is_connected(&self) -> bool

fn ping<'a>(&'a mut self) -> Pin<Box<dyn Future<Output = bool> + Send + 'a>>

fn close<'a>( &'a mut self, ) -> Pin<Box<dyn Future<Output = Result<(), DbError>> + Send + 'a>>

fn in_transaction(&self) -> bool

查询连接当前是否处于未提交事务中。

fn execute_with_params<'a>( &'a mut self, sql: &'a str, params: &'a [Value], ) -> Pin<Box<dyn Future<Output = Result<u64, DbError>> + Send + 'a>>

参数绑定执行（INSERT/UPDATE/DELETE）

fn query_with_params<'a>( &'a mut self, sql: &'a str, params: &'a [Value], ) -> Pin<Box<dyn Future<Output = Result<Vec<HashMap<String, Value>>, DbError>> + Send + 'a>>

参数绑定查询（SELECT）

fn query_values<'a>( &'a mut self, sql: &'a str, ) -> Pin<Box<dyn Future<Output = Result<(Vec<String>, Vec<Vec<Value>>), DbError>> + Send + 'a>>

位置式查询（SELECT）：返回 (列名, 按列顺序的值矩阵)

fn query_values_with_params<'a>( &'a mut self, sql: &'a str, params: &'a [Value], ) -> Pin<Box<dyn Future<Output = Result<(Vec<String>, Vec<Vec<Value>>), DbError>> + Send + 'a>>

参数绑定位置式查询（SELECT）：叠加 prepared statement + 位置式映射双重优化

fn query_stream<'a>( &'a mut self, sql: &'a str, ) -> Pin<Box<dyn Stream<Item = Result<HashMap<String, Value>, DbError>> + Send + 'a>>

流式查询：返回逐行结果流

fn execute_batch<'a>( &'a mut self, sqls: &'a [String], ) -> Pin<Box<dyn Future<Output = Result<u64, DbError>> + Send + 'a>>

批量执行多条 SQL（按顺序执行，返回累计影响行数）

fn execute_batch_params<'a>( &'a mut self, sql: &'a str, params_batch: &'a [Vec<Value>], ) -> Pin<Box<dyn Future<Output = Result<u64, DbError>> + Send + 'a>>

批量插入（单条 SQL 多次参数绑定执行）