Re: Can I regist two instance providers for a same CIM class?

The simple answer is if you want two different c or java based providers 
to provide information to one or multiple instances of the same class 
create a proxy provider which gathers information from both and 
consolidates it into specific instances prior to handing the information 
off to open Pegasus or any other WBEM server API.


On 4/25/2011 11:40 PM, Kirk Augustin wrote:
> Hi Huruifeng,
>
> It does not matter what kind of provider you might want to try having 
> 2 of, it won't work.
> If it could, it would be ambiguous.
> When you register the 2nd provider, for the same purpose, it will over 
> write the first.
> I am not familiar with Small Footprint CIM Broker (*SFCB*), but it 
> would make no sense for it allow 2 providers for the same class and 
> purpose.
> I have not actually tried to have a separate provider for say 
> instances and methods, because there would be no reason to.
> A method provider would also need to know about instances as well, so 
> it is hard to see how it would be useful to separate them.
> Nothing is gained by having more providers than the minimal necessary.
> Often it is easiest to use one provider for many, many classes.
> The provider is told what class it is being queried on, so there is no 
> problem having fewer providers.
> Think of each provider as an interface to a database.
> You would not want a provider for each table in a database, but just 
> one for the entire database.
> You don't need another provider until you have a different database to 
> also be able to connect to.
> Kirk Augustin
> 11821 NW McNamee Rd
> Portland, OR 97231
>
>
> ------------------------------------------------------------------------
> *From:* huruifeng <[email protected]>
> *To:* "Sampige, Sahana Prabhakar (R&D Bangalore)" <[email protected]>; 
> "[email protected]" <[email protected]>
> *Sent:* Mon, April 25, 2011 8:03:27 PM
> *Subject:* Re: RE: Can I regist two instance providers for a same CIM 
> class?
>
> Hi Sahana:
> Here "two providers" you mean two instance providers?
> Now I hava two indication providers for CIM_AlertIndication,can I 
> regist both of them like sfcb does?
> And what about a instance provider and a method provider both for 
> CIM_ComputerSystem?
> Regards
> 2011-04-26
> ------------------------------------------------------------------------
> huruifeng
> ------------------------------------------------------------------------
> *发件人：* Sampige, Sahana Prabhakar (R&D Bangalore)
> *发送时间：* 2011-04-25  17:53:17
> *收件人：* huruifeng; [email protected]
> *抄送：*
> *主题：* RE: Can I regist two instance providers for a same CIM class?
>
> Hi Huruifeng,
>
> You cannot register two providers for the same CIM class. But you 
> could register one provider each for the CIM class hierarchy. When you 
> enumerate the base class for example CIM_ManagedElement, instances for 
> CIM_ManagedElement and its sub class like CIM_LogicalElement, 
> CIM_Processor etc, will be returned.
>
> Rgds,
>
> Sahana
>
> *From:*huruifeng [mailto:[email protected]]
> *Sent:* Monday, April 25, 2011 3:05 PM
> *To:* [email protected]
> *Subject:* Can I regist two instance providers for a same CIM class?
>
> Hi:
>
> Can I regist two instance providers for a same CIM class?
>
> If it is possible, which provider will be called when a getInstance 
> request is recieved?
>
> Regards
>
> 2011-04-25
>
> ------------------------------------------------------------------------
>
> huruifeng
>