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From Paul Davis <paul.joseph.da...@gmail.com>
Subject Re: Bulk update as a single transaction, possible?
Date Mon, 11 Jan 2010 19:25:53 GMT
2010/1/11 Manuel de la Peña <etil15@gmail.com>:
> Hello *,
>
> I have been working with couchdb (through python) for Ia while and I was
> wondering if you could give me a hand with a small problem I'm having. In my
> couchdb python application I'd like to be able to perform a bulk operation
> in which more than one document is either updated or added to the database.
> Currently the python binding does provide a way to perform a bulk update but
> this update it is not understood as a single "transaction"
> because, although it uses a single request, the changes are
> not sequential in the _changes feed and updates and commits are individual,
> that is, if there is an error there rest of the documents are not rolled
> back. My question is the following:
>
> Does couchdb have such a feature that the python bindings is taking
> advantage of?
>
> I do not mind faking the transaction idea from my client code, but I fear
> that other applications/parts of the code might work with a document
> interval between receiving the result of the bulk update and the rool back
> of the operation. Any help would be appreciated.
>
> Kr,
>
> Manuel
>

There is no such feature in CouchDB. Generally speaking there's
probably a way to avoid the necessity to make atomic multi-document
transactions with a bit of rethinking, but that depends on your
specific use case.

HTH,
Paul Davis

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