Kapil, I don't know if you've run across this yet, but the method call: get_transaction() In Python (after you've imported the ZODB module) returns the result of the get_transaction global, which helps do some transaction-related things: get_transaction().commit() get_transaction().abort() get_transaction().note() There are also semantics for committing subtransactions, though I'm not real clear on them. I *think* you commit a subtransaction by doing: get_transaction().commit(1) See Jim's ZODB UML model at http://www.zope.org/Documentation/Developer/Models/ZODB for more info. You could probably emulate what you need to do with a combination of these commands.

-----Original Message----- From: Kapil Thangavelu [mailto:kthangavelu@earthlink.net] Sent: Wednesday, August 09, 2000 4:59 PM To: zope@zope.org Subject: Re: [Zope] Transactions

Let me a bit more specific.

i'm developing a python product which does some fairly intensive list processing over a long list and adds stuff to the zodb based on that. If it bombs somewhere in the middle of the processing i don't want the whole transaction rolled back. i'm doing my own data integrity check so i want each add to be atomic independent of the transaction. i thought about sub-transactions to get around the enormous mem requirements of the huge transactions but it doesn't solve the problem of atomic adds. is there some way to either turn off transactions for a given python operation or to make an operation autocommit itself in a subtransaction?

hmmm... related question (i think) how does one make a method whose effect can't be rolled back?

any help appreciated

Kapil

Kapil Thangavelu wrote:

...

quick question.

Is there a way to turn off transactions for a given python

operation?

...

Kapil

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