ConnectionHub

This object serves as a hub for connections, so that you can pass in a ConnectionHub to a SQLObject subclass as though it was a connection, but actually bind a real database connection later. You can also bind connections on a per-thread basis.

The ConnectionHub class is accessible via the sqlobject.dbconnection module.

You must hang onto the original ConnectionHub instance, as you cannot retrieve it again from the class or instance.

To use the hub, do something like:

hub = ConnectionHub()
class MyClass(SQLObject):
    _connection = hub

hub.threadConnection = connectionFromURI('...')

Attributes

a threadConnection

<property object at 0xb670598c>

Methods

f __format__(...) ...

default object formatter

f __subclasshook__(...) ...

Abstract classes can override this to customize issubclass().

This is invoked early on by abc.ABCMeta.__subclasscheck__(). It should return True, False or NotImplemented. If it returns NotImplemented, the normal algorithm is used. Otherwise, it overrides the normal algorithm (and the outcome is cached).

f __sizeof__(...) ...

__sizeof__() -> int size of object in memory, in bytes

f __init__(self) ...

f __get__(self, obj, type=None) ...

f __set__(self, obj, value) ...

f getConnection(self) ...

f doInTransaction(self, func, *args, **kw) ...

This routine can be used to run a function in a transaction, rolling the transaction back if any exception is raised from that function, and committing otherwise.

Use like:

sqlhub.doInTransaction(process_request, os.environ)

This will run process_request(os.environ). The return value will be preserved.

See the source for more information.