Struct hdbconnect::PreparedStatement

pub struct PreparedStatement { /* fields omitted */ }

Allows injection-safe SQL execution and repeated calls of the same statement with different parameters with as few roundtrips as possible.

Methods

impl PreparedStatement

pub fn parameter_descriptors(&self) -> Option<&Vec<ParameterDescriptor>>

Descriptors of all parameters of the prepared statement (in, out, inout), if any.

pub fn input_parameter_descriptors(&self) -> Option<&Vec<ParameterDescriptor>>

Descriptors of the input (in and inout) parameters of the prepared statement, if any.

pub fn add_batch<T: Serialize>(&mut self, input: &T) -> HdbResult<()>

Converts the input into a row of parameters for the batch, if it is consistent with the metadata.

pub fn add_row_to_batch(&mut self, row: Vec<HdbValue>) -> HdbResult<()>

Consumes the input as a row of parameters for the batch.

Useful mainly for generic code. In most cases add_batch() is more convenient.

pub fn execute_batch(&mut self) -> HdbResult<HdbResponse>

Executes the statement with the collected batch, and clears the batch.

Trait Implementations

impl Drop for PreparedStatement

fn drop(&mut self)

Frees all server-side ressources that belong to this prepared statement.

impl Debug for PreparedStatement

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

Formats the value using the given formatter.