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Subject: Re: [wsrf] factory, query

Thinking about how everyone would know the endpoint reference for the 
"factory instances" service group,
the service group EPR could be an ASAP Factory Property...

On Oct 12, 2004, at 9:57 AM, John Fuller wrote:

> In ASAP an observer requests that a factory create service instances.
> Currently we just use URIs for addressing.
> The factory knows how to create the instance, what it's been told to 
> create and when it created it.
> The instances themselves can be queried for their properties.
> (In the future, it would be nice to make these WSRF properties).
> So, the factory can list the instance ids it's created, but it can't 
> necessarily be expected
> to know about the current state of the instances and end users are 
> likely to want to say
> "give me the instances that are waiting to run or running".
> My thought is that in the future, when the factory creates an instance
> the instance could be registered in a service group for instances 
> created by that factory,
> then the service group could be addressed as an endpoint for a query to
> get instance properties which would return a list of instance 
> properties
> from service instances in the group satisfying an optional xpath query 
> filter for instance selection.
> Thoughts?

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