static_execution_state

Holds state for multi-function SQL execution operations (static interface).

Synopsis

Defined in header <boost/mysql/static_execution_state.hpp>

template<
    class... StaticRow>
class static_execution_state

Member Functions

Name	Description
affected_rows	Returns the number of rows affected by the SQL statement associated to this resultset.
complete	Returns whether all the messages generated by this operation have been read.
info	Returns additional text information about this resultset.
is_out_params	Returns whether the current resultset represents a procedure OUT params.
last_insert_id	Returns the last insert ID produced by the SQL statement associated to this resultset.
meta	Returns metadata about the columns in the query.
operator=	Copy assignment. — Move assignment.
should_read_head	Returns whether the next operation should be read resultset head.
should_read_rows	Returns whether the next operation should be read some rows.
should_start_op	Returns whether `*this` is in the initial state.
static_execution_state [constructor]	Default constructor. — Copy constructor. — Move constructor.
warning_count	Returns the number of warnings produced by the SQL statement associated to this resultset.

This class behaves like a state machine. The current state can be accessed using should_start_op, should_read_rows, should_read_head and complete. They are mutually exclusive. More states may be added in the future as more protocol features are implemented.

Note that this class doesn't store rows anyhow. Row template parameters are used to validate their compatibility with the data that will be returned by the server.

Template Parameters

Type	Description
`StaticRow`	The row or row types that will be returned by the server. There must be one for every resultset returned by the query, and always at least one. All the passed types must fulfill the `StaticRow` concept.

Thread safety

Distinct objects: safe.

Shared objects: unsafe.