Adding Functionality to Zend Framework Classes

Question

Zend Framework

How to add a new method or override an existing one in some ZF class so that it is automatically picked up?
For example, I inherited from Zend_DB and added a new method, how can I use it? - the first thing that comes to mind is to instantiate your My_Zend_Db class and execute your method, while the rest of the application will use Zend_Db, and two connections to the database will most likely be established.

In general, how can I add my edits to Zend_Db without introducing a new class?

PS Strongly do not kick - I did not work with ZF before.

Answer 1

If you work only with tables then Zend_Db_Table::setDefaultAdapter($db); will help, otherwise look where the db instance is created and replace it.

Answer 2

Depends on the situation - either inheritance or decorator.