Trait lunatic_mysql::prelude::Queryable

source · 
pub trait Queryable {

Show 23 methods    fn query_iter<Q: AsRef<str>>(
        &mut self,
        query: Q
    ) -> Result<QueryResult<'_, '_, '_, Text>>;
    fn prep<Q: AsRef<str>>(&mut self, query: Q) -> Result<Statement>;
    fn close(&mut self, stmt: Statement) -> Result<()>;
    fn exec_iter<S, P>(
        &mut self,
        stmt: S,
        params: P
    ) -> Result<QueryResult<'_, '_, '_, Binary>>
    where
        S: AsStatement,
        P: Into<Params>;

    fn query<T, Q>(&mut self, query: Q) -> Result<Vec<T>>
    where
        Q: AsRef<str>,
        T: FromRow,
    { ... }
    fn query_opt<T, Q>(
        &mut self,
        query: Q
    ) -> Result<Vec<StdResult<T, FromRowError>>>
    where
        Q: AsRef<str>,
        T: FromRow,
    { ... }
    fn query_first<T, Q>(&mut self, query: Q) -> Result<Option<T>>
    where
        Q: AsRef<str>,
        T: FromRow,
    { ... }
    fn query_first_opt<T, Q>(
        &mut self,
        query: Q
    ) -> Result<Option<StdResult<T, FromRowError>>>
    where
        Q: AsRef<str>,
        T: FromRow,
    { ... }
    fn query_map<T, F, Q, U>(&mut self, query: Q, f: F) -> Result<Vec<U>>
    where
        Q: AsRef<str>,
        T: FromRow,
        F: FnMut(T) -> U,
    { ... }
    fn query_map_opt<T, F, Q, U>(&mut self, query: Q, f: F) -> Result<Vec<U>>
    where
        Q: AsRef<str>,
        T: FromRow,
        F: FnMut(StdResult<T, FromRowError>) -> U,
    { ... }
    fn query_fold<T, F, Q, U>(&mut self, query: Q, init: U, f: F) -> Result<U>
    where
        Q: AsRef<str>,
        T: FromRow,
        F: FnMut(U, T) -> U,
    { ... }
    fn query_fold_opt<T, F, Q, U>(&mut self, query: Q, init: U, f: F) -> Result<U>
    where
        Q: AsRef<str>,
        T: FromRow,
        F: FnMut(U, StdResult<T, FromRowError>) -> U,
    { ... }
    fn query_drop<Q>(&mut self, query: Q) -> Result<()>
    where
        Q: AsRef<str>,
    { ... }
    fn exec_batch<S, P, I>(&mut self, stmt: S, params: I) -> Result<()>
    where
        Self: Sized,
        S: AsStatement,
        P: Into<Params>,
        I: IntoIterator<Item = P>,
    { ... }
    fn exec<T, S, P>(&mut self, stmt: S, params: P) -> Result<Vec<T>>
    where
        S: AsStatement,
        P: Into<Params>,
        T: FromRow,
    { ... }
    fn exec_opt<T, S, P>(
        &mut self,
        stmt: S,
        params: P
    ) -> Result<Vec<StdResult<T, FromRowError>>>
    where
        S: AsStatement,
        P: Into<Params>,
        T: FromRow,
    { ... }
    fn exec_first<T, S, P>(&mut self, stmt: S, params: P) -> Result<Option<T>>
    where
        S: AsStatement,
        P: Into<Params>,
        T: FromRow,
    { ... }
    fn exec_first_opt<T, S, P>(
        &mut self,
        stmt: S,
        params: P
    ) -> Result<Option<StdResult<T, FromRowError>>>
    where
        S: AsStatement,
        P: Into<Params>,
        T: FromRow,
    { ... }
    fn exec_map<T, S, P, F, U>(
        &mut self,
        stmt: S,
        params: P,
        f: F
    ) -> Result<Vec<U>>
    where
        S: AsStatement,
        P: Into<Params>,
        T: FromRow,
        F: FnMut(T) -> U,
    { ... }
    fn exec_map_opt<T, S, P, F, U>(
        &mut self,
        stmt: S,
        params: P,
        f: F
    ) -> Result<Vec<U>>
    where
        S: AsStatement,
        P: Into<Params>,
        T: FromRow,
        F: FnMut(StdResult<T, FromRowError>) -> U,
    { ... }
    fn exec_fold<T, S, P, U, F>(
        &mut self,
        stmt: S,
        params: P,
        init: U,
        f: F
    ) -> Result<U>
    where
        S: AsStatement,
        P: Into<Params>,
        T: FromRow,
        F: FnMut(U, T) -> U,
    { ... }
    fn exec_fold_opt<T, S, P, U, F>(
        &mut self,
        stmt: S,
        params: P,
        init: U,
        f: F
    ) -> Result<U>
    where
        S: AsStatement,
        P: Into<Params>,
        T: FromRow,
        F: FnMut(U, StdResult<T, FromRowError>) -> U,
    { ... }
    fn exec_drop<S, P>(&mut self, stmt: S, params: P) -> Result<()>
    where
        S: AsStatement,
        P: Into<Params>,
    { ... }

}
Expand description

Queryable object.

Required Methods

Perfoms text query.

Prepares the given query as a prepared statement.

This function will close the given statement on the server side.

Executes the given stmt with the given params.

Provided Methods

Performs text query and collects the first result set.

Same as Queryable::query but useful when you not sure what your schema is.

Performs text query and returns the first row of the first result set.

Same as Queryable::query_first but useful when you not sure what your schema is.

Performs text query and maps each row of the first result set.

Same as Queryable::query_map but useful when you not sure what your schema is.

Performs text query and folds the first result set to a single value.

Same as Queryable::query_fold but useful when you not sure what your schema is.

Performs text query and drops the query result.

Prepares the given statement, and executes it with each item in the given params iterator.

Executes the given stmt and collects the first result set.

Same as Queryable::exec but useful when you not sure what your schema is.

Executes the given stmt and returns the first row of the first result set.

Same as Queryable::exec_first but useful when you not sure what your schema is.

Executes the given stmt and maps each row of the first result set.

Same as Queryable::exec_map but useful when you not sure what your schema is.

Executes the given stmt and folds the first result set to a signel value.

Same as Queryable::exec_fold but useful when you not sure what your schema is.

Executes the given stmt and drops the result.

Implementors