Hi Tino,
Tino Schöllhorn wrote:
Hi,
we are using OJB-1.0.1 and evertything works fine. Now I have the
following situation:
We have a security-mechanism which uses the classes ACL
(AccessControlList) and ACLEntry. One ACL has many ACLEntries. Now when
using the standard OJB-Materialization methods OJB uses 2 SQLs to
materialize on ACL. One for the ACL and one for the ACLEntry.
Because we have MANY of those ACLs I am curious if it is possible to
overwrite the materialization-method so that just one SQL is used. I
thought about using "Prefeteched Relationships" but I noticed that there
are also 2 SQLs.
The "Prefeteched Relationships" is useful if you search for more than
one ACL, then OJB is able to reduce the queries to read the ACLEntries:
http://db.apache.org/ojb/docu/guides/query.html#prefetched+relationships
The upcoming version 1.0.5 use "Prefeteched Relationships" for all 1:n
relations.
Any ideas or even example how I could achieve that?
Sorry no.
regards,
Armin
Kind regards
Tino
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