| [CDO] About revisions [message #426114] |
Tue, 16 December 2008 12:43  |
Eclipse User |
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Originally posted by: mathieu.garcia.anyware-tech.com
Hi,
I'm very beginner in CDO and I'm currently doing a quick study in order
to replace Teneo with CDO in an existing RCP software.
So, I tried some examples following tutorials. Chosen store in this
configuration was derby.
Because database structure remains important (because of external
access), I took a look on it after some insertions through CDO.
And I discovered CDO handles revision. Basically, that is a very good
feature. But, what about very large databases ? Number of revision of a
same CDOId may increase very quickly and decrease performance.
So, my questions are:
- does it exist a way to suppress storing of each revision by keeping
only the last one.
- or does it exist a way to limit number of revisions for a CDOId.
Thanks in advance and congratulations for your work!
Mathieu
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| Re: [CDO] About revisions [message #426117 is a reply to message #426114] |
Tue, 16 December 2008 13:07  |
| Eclipse User |
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Mathieu,
> - does it exist a way to suppress storing of each revision by keeping
> only the last one.
Yes, you could deactivate audits. If you look at cdoserver.xml:
<property name="supportingAudits" value="false"/>
Unfortunately, this isn't yet implemented for DBStore :(
There is a bug already opened:
253110: [DB] Support non-auditing mode
https://bugs.eclipse.org/bugs/show_bug.cgi?id=253110
I'm sure Eike agrees this is high priority right now :)
> - or does it exist a way to limit number of revisions for a CDOId.
There is also another enhacement going that should address this:
256490: Add feature to purge revision history to reduze size
https://bugs.eclipse.org/bugs/show_bug.cgi?id=256490
HTH,
Víctor.
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