[Zope-dev] Zope object oid's

[Jason Spisak]

Jonothan Farr writes:

> > I'm curious, does a transaction in the FileStorage contain all the oid's to
> > be effected by that transaction?  Is it split-up (appended) by transaction
> > or oid? Transaction, I believe.
> 
> FileStorage contains transaction records, which themselves contain data records.
> The data records contain the oid's.
> 
> The basic procedure for a write goes something like this:
> 
> tpc_begin() :
>     start the transaction by setting up the tempfile where data records are
> written before the final commit
> 
> store() :
>     called for each object to be stored, writes the data record for the object
> to the temp file
> 
> tpc_finish() :
>     commits the transaction by writing the transaction record header, the data
> records from the temp file, then the transaction record footer
> 
> Then load() just retrieves the latest data record for the object, it doesn't
> need to know about transactions.
> 
> Hope this helps,

Very much so.  I was reading the source, but there is a lot of stuff in
there.

Thanks again,

Jason Spisak
CIO
HireTechs.com
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