Hi Stephen, all On 2014-06-02 18:50, stephen.burke@stfc.ac.uk wrote:
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Looking at Florido's last mail, I have a problem with this comment:
"1) ABSTRACT classes to be in sync with XML realisation: Objects like Entity, Resource, Share, Policy have been declared ABSTRACT to be in sync with the XML schema. This means these cannot be instantiated as is; only their specialization can (i.e. Computing- Storage- or others like Benchmark etc.) are objects that can be published."
That seems to contradict a statement in the last version of the rendering document that I've seen:
* All classes deriving from Entity will be of type "Structural".
I think you're right. I can change everything back to structural again. I think my overdoing was due to a mix of the ABSTRACT and STRUCTURAL in the previous schema.
It was a deliberate decision for LDAP that at least Resource, Share, Manager and Activity should be instantiable to allow prototyping new classes, given the difficulty in craeting and deploying a new version of the schema.
This is not really true, by declaring them abstract one forces a person to extend these classes and not change anything inside them. Even though they are abstract they can be used the same way we do with ComputingShare etc.
Previous versions of the document had some explicit text to explain that, and I don't think we ever discussed a change to that.
You're right. To avoid further discussion which I think is of no use now I will just revert everything back to STRUCTURAL.
For those classes there is no fundamental reason that they should not be instantiable, it's just that the base classes have no attributes and hence aren't useful in themselves, but you can still usefully add Extensions to prototype new attributes. By contrast there isn't likely to be any use in having Policy and Domain be instantiable, but equally it would do no particular harm.
I agree. But let's stick to the document as you suggested. Sorry about that. I'll try to fix it before the meeting starts. Cheers, Florido -- ================================================== Florido Paganelli ARC Middleware Developer - NorduGrid Collaboration System Administrator Lund University Department of Physics Division of Particle Physics BOX118 221 00 Lund Office Location: Fysikum, Hus B, Rum B313 Office Tel: 046-2220272 Email: florido.paganelli@REMOVE_THIShep.lu.se Homepage: http://www.hep.lu.se/staff/paganelli ==================================================