> This is on my list of things to do but it doesn't have high
> priority because
> most people are writing their own using ROLEs. This is how I do it.

as far as i remember, this question is asked every 2-3 months for a year or
two, and no universal solution exists :(
what can i suppose - catch exeption #335544352 (not sufficient rights while
preparing edit-, deletesql), clear this xxxsql and reopen query. 10 lines of
code attached to onerror of main connection solve the problem forever :)
==
Serg