[Zope] ZSQL Methods and transaction control

[robert rottermann]

Hi there,

I am implementing a tool to handle userdata that is stored in a MySQL db.
The underlaying logic of the stored procedures used to maintain the db
content
dictate that I have to control the transactions myself.
I understand that there is a way to handle transaction controll in the
ZMySQL
methods. However I find no documentation at all on how to use it.

Without using ZMySQL methods I would be using the following piece of code:
db = mysql.connect(host="localhost" ...)
cursor = db.cursor()
query = "CALL insertUser('%s', '$xxx$', @id, @error);select @id, @error"
% 'JohnTheUser'
cursor.execute(query)
# get the next resultset, it has the result of the select
cursor.nextset()
result = cursor.fetchall()[0]
error = int(result[1])
if error:
    print "error %s when trying to add user %s" % (ERRRORS[error],
'JohnTheUser')
    db.rollback()
    continue #we are in a loop actually
..
db.commit()

How can I mimic that using ZSQL Methods

thanks for any pointers
Robert

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