DB_DataObject - update only if changed

Hi, I'm playing around with the DB_DataObject stuff (very nice - thanks!), but have a requirement only to update columns that have been changed. Right now the update method seems to set all columns to the current attributes of the object. For example, I have a user object with username, password, name attributes. If I change only the name on a form, the update statement is update users set username='blah', password = 'blah', name = 'newblah' where usr_id = 6; I would like the statement to be: update users set name = 'newblah' where usr_id = 6; Basically, I would like something like setFrom to only set the attributes that have changed and to mark them as dirty somehow. First question: are there plans to do this? Now on to my planned solution - all comments appreciated! In setFrom: - test the new value against the old value - if different, set the old value to the new value AND - set the $items so that the value for the attribute (eg DB_DATAOBJECT_STR) is bitwise-ANDed with a new value DB_DATABASE_DIRTY (which I have set to be 128) in update(): - rejig the query builder to test for the DB_DATABASE_DIRTY bit, and if the attribute is dirty, use it in the query I'm playing with this right now - I can post the code if and when I get it working, but just wanted to ensure that I wasn't doing something stoopid (PHP novice...I'm allowed some mistakes :-) Thanks for any input, Geoff -- Geoff Hopson Objectology Ltd. http://www.objectology.co.uk/