Re: Members of a collection

From: Tim Ellison OTT (Tim_Ellison@oti.com)
Date: Thu, Feb 17 2000

  • Next message: Tim Ellison OTT: "RE: Localized baselines"

    From: Tim_Ellison@oti.com (Tim Ellison OTT)
    To: esedlar@us.oracle.com (Eric Sedlar), ietf-dav-versioning@w3.org (ietf-dav-versioning)
    Message-ID: <2000Feb17.102227.1250.1478963@otismtp.ott.oti.com>
    Date: Thu, 17 Feb 2000 10:23:26 -0500
    Subject: Re: Members of a collection
    
    
    <eric>
    Wait, is there no way to ask a collection for only those members that would 
    be currently selected?
    </eric>
    
    Nope.
    
    <eric>
    If I use ClearCase, I never have this problem.  I think that will be what 
    users most frequently want, and I don't think we want to wait for DASL to 
    handle this important query.
    </eric>
    
    <eric>
    I also disagree with Tim's claim that this is the same as a DELETE happening 
    while you weren't paying attention.  Let's take the case where I know that 
    I'm the only person operating in a particular section of the URL hierarchy 
    (I have my own virtual single-user system). Clearly, I know that no delete 
    has occurred, yet I'm seeing garbage in my directories because I have a bug 
    in my currently selected RSR's.
    </eric>
    
    Ah, now you're adding constraints (single-user) :-)
    I agree that it is going to be bizzare for clients that expect all listed 
    members of a collection to be GET-able.  Others have suggested a separate 
    return code to show the client's assumption was wrong--I think this goes 
    part way to appeasing the client, but I suspect they will still be confused.
    It would be similarly bizzare for a collection to change it's apparent 
    members based on how the RSR selects (or not) it's members revisions; so I'm 
    prepared to live with the current situation.
    
    Even without a "bug" in the RSR, it is perfectly valid (and likely) to have 
    resources that don't select a revision.
    
    Tim