<br><font size=2 face="sans-serif">I can't make the call today as I am
travelling but there are a couple of things I'd like to raise. These have
come to light while I have been thinking about white space issues.</font>
<br>
<br><font size=2 face="sans-serif">1) This is related to the white
space discussion around entities. One way to handle the situation where
the terminator can vary is to allow the DFDL markup properties (dfdl:terminator,
dfdl:separator, etc) to be lists, just like we already do for dfdl:nullValues.
(IBM's WTX has this capability).</font>
<br>
<br><font size=2 face="sans-serif">2) We've allowed the prefix of a prefixed
length to be explicitly described as a non-event field using dfdl:lengthPrefixType.
Should we permit this for markup properties? Instead of supplying
a list of possible values, you supply a simple type with enums for the
values. This could be viewed as an alternative/complementary to 1). There
is a limitations - because we are using XSDL enumeration facet, we are
constrained by its syntax so I don't see how we could use our own entity
scheme or expressions. Also, I suspect that enums are inherently unordered
so we'd need a way of saying which to use on output (use an element of
simple type and use XSDL default attribute?). Lastly, we should not
force a user to model an initiator as an element/type - most users just
see it as a piece of text so just entering the value must still be allowed.
</font>
<br>
<br><font size=2 face="sans-serif">3) Let's say my delimiter is dynamically
defined at the start of the data, like EDI allows. We would handle that
in DFDL using an expression or variable. However, EDI also allows random
white space to appear after the delimiter. Can our expression/entity syntaxes
handle this? Does this preclude use of 1) or 2)? </font>
<br>
<br><font size=2 face="sans-serif">Regards, Steve<br>
<br>
Steve Hanson<br>
WebSphere Message Brokers<br>
Hursley, UK<br>
Internet: smh@uk.ibm.com<br>
Phone (+44)/(0) 1962-815848</font>
<br><font size=1 color=#800080 face="sans-serif">----- Forwarded by Steve
Hanson/UK/IBM on 23/01/2008 08:27 -----</font>
<br>
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<td width=40%><font size=1 face="sans-serif"><b>"Mike Beckerle"
<mbeckerle.dfdl@gmail.com></b> </font>
<br><font size=1 face="sans-serif">Sent by: dfdl-wg-bounces@ogf.org</font>
<p><font size=1 face="sans-serif">23/01/2008 04:18</font>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">dfdl-wg@ogf.org</font>
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<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
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<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[DFDL-WG] Agenda for DFDL WG Call</font></table>
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I have these items for the agenda.<br>
<br>
1) review of entities proposal<br>
<br>
2) OGF 22 - our session is Monday 2/25 at 4:15pm. <br>
<br>
Other agenda items?<br>
<br>
...mikeb<br>
<br>
</font><tt><font size=2>--<br>
dfdl-wg mailing list<br>
dfdl-wg@ogf.org<br>
http://www.ogf.org/mailman/listinfo/dfdl-wg</font></tt><font size=3 face="sans-serif"><br>
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