[OASIS Issue Tracker] (OBIX-227) Suggestion for History Object

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    [ https://issues.oasis-open.org/browse/OBIX-227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=59375#comment-59375 ] 

Craig Gemmill  commented on OBIX-227:
-------------------------------------

Several thoughts here.  While I'd like to get into streams, etc.  that feels like too much scope creep for me.

Re: Brian's two-pass complaint.  That should only be a problem for the first request.  Subsequent requests could use the non-OBIX uri only, and avoid the first obix xml request.  I don't see an easy way to have it work where the request is OBIX and the response is non-OBIX.  How would you work the OBIX client's stack in this case, where the response is out-of-band?

> Suggestion for History Object
> -----------------------------
>
>                 Key: OBIX-227
>                 URL: https://issues.oasis-open.org/browse/OBIX-227
>             Project: OASIS Open Building Information Exchange (oBIX) TC
>          Issue Type: Improvement
>          Components: OBIX 1.1 Schema, OBIX 1.1 Specification
>    Affects Versions: OBIX 1.1 PR03
>         Environment: Brian Frank
>            Reporter: Toby Considine
>            Assignee: Craig Gemmill 
>
> 14.1 History Object - HistoryCollection
> The terms "collection" and "HistoryCollection" seem sort of generic and confusing.  How about "collectMode" and "HistoryCollectMode" 
> 14.1 History Object - prototype
> Glad to finally see something like this.  However I am not quite sure how it works.  I think we need an example.
> 14.2.4.2 History Query as Preformatted List
> This design requires two separate round trip requests which is pretty terrible for performance.  I think a requirement of this design is that once the history point is learned by the client system, that it can request history data with a single HTTP request.  I don't see that having an oBIX XML response before getting the data provides much value.  I would suggest this: just add a "format" field to the HistoryFilter object and when specified the result is returned in the requested MIME type.



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