sqlalchemy.sql.schema.ThreadLocalMetaData

class documentation

class ThreadLocalMetaData(MetaData):

A MetaData variant that presents a different bind in every thread.

Makes the bind property of the MetaData a thread-local value, allowing this collection of tables to be bound to different Engine implementations or connections in each thread.

The ThreadLocalMetaData starts off bound to None in each thread. Binds must be made explicitly by assigning to the bind property or using connect(). You can also re-bind dynamically multiple times per thread, just like a regular MetaData.

Method	`__init__`	Construct a ThreadLocalMetaData.
Method	`_bind_to`	Bind to a Connectable in the caller's thread.
Method	`bind`	The bound Engine or Connection for this thread.
Method	`dispose`	Dispose all bound engines, in all thread contexts.
Method	`is_bound`	True if there is a bind for this thread.
Class Variable	`__visit_name__`	Undocumented
Instance Variable	`__engines`	Undocumented
Instance Variable	`context`	Undocumented

Inherited from MetaData:

Method	`__contains__`	Undocumented
Method	`__getstate__`	Undocumented
Method	`__repr__`	Undocumented
Method	`__setstate__`	Undocumented
Method	`_add_table`	Undocumented
Method	`_remove_table`	Undocumented
Method	`clear`	Clear all Table objects from this MetaData.
Method	`create_all`	Create all tables stored in this metadata.
Method	`drop_all`	Drop all tables stored in this metadata.
Method	`reflect`	Load all available table definitions from the database.
Method	`remove`	Remove the given Table object from this MetaData.
Instance Variable	`_bind`	Undocumented
Instance Variable	`_fk_memos`	Undocumented
Instance Variable	`_schemas`	Undocumented
Instance Variable	`_sequences`	Undocumented
Instance Variable	`info`	Info dictionary associated with the object, allowing user-defined data to be associated with this `.SchemaItem`.
Instance Variable	`naming_convention`	Undocumented
Instance Variable	`schema`	Undocumented
Instance Variable	`tables`	A dictionary of `_schema.Table` objects keyed to their name or "table key".
Property	`sorted_tables`	Returns a list of `_schema.Table` objects sorted in order of foreign key dependency.

Inherited from SchemaItem (via MetaData):

Method	`_init_items`	Initialize the list of child items for this SchemaItem.
Method	`_schema_item_copy`	Undocumented
Class Variable	`_use_schema_map`	Undocumented
Class Variable	`create_drop_stringify_dialect`	Undocumented

Inherited from SchemaEventTarget (via MetaData, SchemaItem):

Method	`_set_parent`	Associate with this SchemaEvent's parent object.
Method	`_set_parent_with_dispatch`	Undocumented

Inherited from Traversible (via MetaData, SchemaItem):

Method	`get_children`	Return immediate child `.visitors.Traversible` elements of this `.visitors.Traversible`.
Method	`__class_getitem__`	Undocumented

def __init__(self):

overrides sqlalchemy.sql.schema.MetaData.__init__

Construct a ThreadLocalMetaData.

@util.preload_module('sqlalchemy.engine.url')
def _bind_to(self, bind):

overrides sqlalchemy.sql.schema.MetaData._bind_to

Bind to a Connectable in the caller's thread.

def bind(self):

overrides sqlalchemy.sql.schema.MetaData.bind

The bound Engine or Connection for this thread.

This property may be assigned an Engine or Connection, or assigned a string or URL to automatically create a basic Engine for this bind with create_engine().

def dispose(self):

Dispose all bound engines, in all thread contexts.

def is_bound(self):

overrides sqlalchemy.sql.schema.MetaData.is_bound

True if there is a bind for this thread.

__visit_name__: str =

overrides sqlalchemy.sql.schema.MetaData.__visit_name__

Undocumented

__engines: dict =

Undocumented

context =

Undocumented