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From "Kurt T Stam (JIRA)" <juddi-...@ws.apache.org>
Subject [jira] [Commented] (JUDDI-633) Building a Find Qualifiers for comparison operator such as "greater then" and "less than".
Date Wed, 14 Aug 2013 13:49:47 GMT

    [ https://issues.apache.org/jira/browse/JUDDI-633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739674#comment-13739674
] 

Kurt T Stam commented on JUDDI-633:
-----------------------------------

Hi Avinash, 

http://research.cs.queensu.ca/home/cords2/icws07.pdf

I like your idea but
- I don't think it's supported by the UDDIv3 spec, so it'd be a jUDDI (vendor) specific feature.
- key references are strings - so I don't think a "greater than" or "less than" is going to
do what you expect it to do.

So it's not really a good fit on the server side., however I like the approach mentioned in
the link above, and I think this may be easily implemented in the jUDDI-client. Where you
can do a search for a service implementation - get back a collection along with their QoS
info and then you can do the filtering on the QoS right there. The jUDDI client would be the
'agent' mentioned in the paper: page 5

"After the agent receives the discovery request, it
contacts the UDDI registry to find services that match
the customer’s functional requirements, and retrieves
their QoS information from the corresponding
tModels. The agent then uses the service matching,
ranking and selection algorithm described in the next
section to select the top M
services (M is specified by
the customer in the discovery request) to return to the
customer. "

What do you think? Is this what you are going for? Maybe you can write an enhancement in the
jUDDI client and send us a patch?

Cheers,

--Kurt
                
> Building a Find Qualifiers for comparison operator such as "greater then" and "less than".
> ------------------------------------------------------------------------------------------
>
>                 Key: JUDDI-633
>                 URL: https://issues.apache.org/jira/browse/JUDDI-633
>             Project: jUDDI
>          Issue Type: New Feature
>          Components: juddi-tomcat
>    Affects Versions: 3.1.5
>         Environment: Windows 8 Pro.
> Tomcat 7.0
> MySQL 5.6
>            Reporter: Avinash Ganpat Mahajan
>            Assignee: Kurt T Stam
>              Labels: features
>             Fix For: 3.1.5
>
>   Original Estimate: 1,224h
>  Remaining Estimate: 1,224h
>
> I am trying to implement QoS aware UDDI searching mechanism.
> As QoS attributes are stored in KeyedReferences so needs to have some qualifiers to give
flexibility for searching such as for cost.

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