[DFDL-WG] Uncertainty and Discriminators

[Mike Beckerle]

With my comments and edits.

This works for me.

I added one thing of substance. Inductively, if a sequence group is known to
exist, and that sequence group is required within an enclosing sequence
group, then the enclosing sequence group is also known to exist. This lets
these things cascade outward naturally by the implications of being
required.

I fixed typos like plurals and such.

We have to decide about the term "component". I thought the term for
"element or model group" was "item".





On Wed, Jan 27, 2010 at 7:14 AM, Alan Powell <alan_powell at uk.ibm.com> wrote:

>
>
> There was quite a lot of overlap between the Discriminators document  and
> the previous Resolving Uncertainty document so I merged the two together and
> incorporated Suman's and Steve's comment. It is a bit of a rushed job but
> should help the discussion. I didn't have time for examples.
>
>
>     Regards
>    Alan Powell   Development - MQSeries, Message Broker, ESB IBM Software
> Group, Application and Integration Middleware Software
> -------------------------------------------------------------------------------------------------------------------------------------------
> IBM MP211, Hursley Park Hursley, SO21 2JN United Kingdom Phone:
> +44-1962-815073 e-mail: alan_powell at uk.ibm.com
>
> ----- Forwarded by Alan Powell/UK/IBM on 27/01/2010 12:10 -----
>  From: Alan Powell/UK/IBM at IBMGB To: dfdl-wg at ogf.org Date: 26/01/2010 12:59
> Subject: [DFDL-WG] Fw: discriminators - such as it is
> ------------------------------
>
>
>
>
>      Regards     Alan Powell     Development - MQSeries, Message Broker,
> ESB  IBM Software Group, Application and Integration Middleware Software
> -------------------------------------------------------------------------------------------------------------------------------------------
> IBM  MP211, Hursley Park  Hursley, SO21 2JN  United Kingdom  Phone:
> +44-1962-815073  e-mail: alan_powell at uk.ibm.com
>
>
> ----- Forwarded by Alan Powell/UK/IBM on 26/01/2010 12:59 -----  From: Mike
> Beckerle <mbeckerle.dfdl at gmail.com>  To: Alan Powell/UK/IBM at IBMGB  Cc: Steve
> Hanson/UK/IBM at IBMGB  Date: 21/01/2010 16:12  Subject: discriminators -
> such as it is
>
>  ------------------------------
>
>
>
> Alan,
>
> This is where I am with discriminators. I won't have an opportunity to work
> on this again for a bit, and it's close, though not perfect. In particular,
> there's a numbered list of points here, and the order of those points is
> probably not right.
>
> ...mikeb
>
>
>
>  ------------------------------
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> [attachment "dfdl-discriminators.doc" deleted by Alan Powell/UK/IBM] --
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