sqlalchemy.engine.interfaces.ExecutionContext

class documentation

class ExecutionContext: (source)

Known subclasses: sqlalchemy.engine.default.DefaultExecutionContext

A messenger object for a Dialect that corresponds to a single execution.

Method	`create_cursor`	Return a new cursor generated from this ExecutionContext's connection.
Method	`fire_sequence`	given a :class:`.Sequence`, invoke it and return the next int value
Method	`get_out_parameter_values`	Return a sequence of OUT parameter values from a cursor.
Method	`get_rowcount`	Return the DBAPI ``cursor.rowcount`` value, or in some cases an interpreted value.
Method	`handle_dbapi_exception`	Receive a DBAPI exception which occurred upon execute, result fetch, etc.
Method	`lastrow_has_defaults`	Return True if the last INSERT or UPDATE row contained inlined or database-side defaults.
Method	`post_exec`	Called after the execution of a compiled statement.
Method	`pre_exec`	Called before an execution of a compiled statement.
Class Variable	`compiled`	if passed to constructor, sqlalchemy.engine.base.Compiled object being executed
Class Variable	`connection`	Connection object which can be freely used by default value generators to execute SQL. This Connection should reference the same underlying connection/transactional resources of root_connection.
Class Variable	`cursor`	DB-API cursor procured from the connection
Class Variable	`dialect`	dialect which created this ExecutionContext.
Class Variable	`engine`	engine which the Connection is associated with
Class Variable	`execute_style`	the style of DBAPI cursor method that will be used to execute a statement.
Class Variable	`executemany`	True if the context has a list of more than one parameter set.
Class Variable	`invoked_statement`	The Executable statement object that was given in the first place.
Class Variable	`isinsert`	True if the statement is an INSERT.
Class Variable	`isupdate`	True if the statement is an UPDATE.
Class Variable	`no_parameters`	True if the execution style does not use parameters
Class Variable	`parameters`	bind parameters passed to the execute() or exec_driver_sql() methods.
Class Variable	`postfetch_cols`	a list of Column objects for which a server-side default or inline SQL expression value was fired off. Applies to inserts and updates.
Class Variable	`prefetch_cols`	a list of Column objects for which a client-side default was fired off. Applies to inserts and updates.
Class Variable	`root_connection`	Connection object which is the source of this ExecutionContext.
Class Variable	`statement`	string version of the statement to be executed. Is either passed to the constructor, or must be created from the sql.Compiled object by the time pre_exec() has completed.
Class Method	`_init_compiled`	Undocumented
Class Method	`_init_ddl`	Undocumented
Class Method	`_init_default`	Undocumented
Class Method	`_init_statement`	Undocumented
Method	`_exec_default`	Undocumented
Method	`_get_cache_stats`	Undocumented
Method	`_prepare_set_input_sizes`	Undocumented
Method	`_setup_result_proxy`	Undocumented

def create_cursor(self) -> DBAPICursor: (source) ¶