Re: AW: Storing lots of (unnamed?) objects with ozone

Yes and this has been discussed before. It would be a good idea but so far no 
one has needed it badly enough to implement support for it. There are some 
(probably better) alternatives for querying (QBE or SODA) but the same things 
applies there. Maybe after the persistent collections are feature complete it 
would make sense to build a queryable interface on to of those collections. 
One way that would probably be pretty straightforward is to adopt jxpath 
(from jakarta commons) but I'm sure there are several ways provide ad hoc 
query support for Ozone. If you create on I'm sure many people would be 
interested in it...

For more info search the mail list archives.

Best regards,
Per


tisdagen den 25 maj 2004 09.27 skrev Christian Merenda:
> > Every technology has its pros and cons. The big pro for a relational
> > (SQL supporting) database lies in its flexibility to process all sorts
> > of different queries that are specified at runtime.
>
> Why isn´t there a possibility in Ozone to process OQL queries? Apart
> from performance issues it would be quite useful to be able to query the
> database. Unlike SQL, OQL queries would also be able to use methods in
> its queries. So for example the salary might be calculated at runtime
> with a formula using the method d.salary()...
>
> select avg(d.salary())
> from developer d
>
> This would be quite an exciting feature...
>
> Christian
>
>
>
>
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