sqlalchemy.engine.interfaces.Connectable

class documentation

class Connectable(object):

Known subclasses: sqlalchemy.engine.base.Connection, sqlalchemy.engine.base.Engine, sqlalchemy.engine.mock.MockConnection

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Interface for an object which supports execution of SQL constructs.

The two implementations of .Connectable are _engine.Connection and _engine.Engine.

Connectable must also implement the 'dialect' member which references a .Dialect instance.

Method	`_execute_clauseelement`	Undocumented
Method	`_run_visitor`	Undocumented
Method	`connect`	Return a `_engine.Connection` object.
Method	`execute`	Executes the given construct and returns a `_engine.CursorResult`.
Method	`scalar`	Executes and returns the first column of the first row.
Class Variable	`engine`	The `_engine.Engine` instance referred to by this `.Connectable`.

def _execute_clauseelement(self, elem, multiparams=None, params=None):

overridden in sqlalchemy.engine.base.Connection, sqlalchemy.engine.base.Engine

Undocumented

def _run_visitor(self, visitorcallable, element, **kwargs):

Undocumented

def connect(self, **kwargs):

overridden in sqlalchemy.engine.base.Connection, sqlalchemy.engine.base.Engine, sqlalchemy.engine.mock.MockConnection

Return a _engine.Connection object.

Depending on context, this may be self if this object is already an instance of _engine.Connection, or a newly procured _engine.Connection if this object is an instance of _engine.Engine.

def execute(self, object_, *multiparams, **params):

overridden in sqlalchemy.engine.base.Connection, sqlalchemy.engine.base.Engine, sqlalchemy.engine.mock.MockConnection

Executes the given construct and returns a _engine.CursorResult.

def scalar(self, object_, *multiparams, **params):

overridden in sqlalchemy.engine.base.Connection, sqlalchemy.engine.base.Engine

Executes and returns the first column of the first row.

The underlying cursor is closed after execution.

engine =

overridden in sqlalchemy.engine.base.Connection, sqlalchemy.engine.base.Engine, sqlalchemy.engine.mock.MockConnection

The _engine.Engine instance referred to by this .Connectable.

May be self if this is already an _engine.Engine.