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RE: [xml-dev] Problem with Entity parameter
- From: "Kekesi, Sandor \(LNG-EWR\)" <Sandor.G.Kekesi@...>
- To: "Rita Shen" <shaledova@...>
- Date: Wed, 27 Jun 2007 09:59:33 -0400
So compared with the first solution (<!ELEMENT Graph (#PCDATA|n|img)*>), the benifit
for your solution is that in the XML, I can have any kind of combinations
among the children elements by wrapping the text by a pair of tags
(<text> and <\text>), right?
hello
again - there's a benefit in wrapping the pcdata if you're trying to
enforce sequencing requirements while authoring the document; in
particular, the sequencing of the <n> and <img> elements, which
seems to be what you're going for in the original model. otherwise,
as Bjoern points out, xml will restrict you to the rules of mixed content, under
which you'll lose control of that sequencing.
Hi, Sandor,
I am actrually still a bit confused by the use of PCDATA.
If I have the segment in a XML like:
<graph>it is a graph<n>sky</n>you can see it
on<img>a link</img>nice</graph>
so by using a element container for the PCDATA, it is like:
<graph><text>it is a
graph</text><n>sky</n><text>you can see it
on</text><img>a
link</img><text>nice</text></graph>
Is it right?
So compared with the first solution (<!ELEMENT Graph
(#PCDATA|n|img)*>), the benifit for your solution is that in the
XML, I can have any kind of combinations among the children elements by wrapping
the text by a pair of tags (<text> and <\text>), right?
Thank you,
Rita
On 6/27/07, Kekesi,
Sandor (LNG-EWR) <Sandor.G.Kekesi@...>
wrote:
hi Rita -
you could try creating an element container for the pcdata, for
example:
<!ELEMENT text (#PCDATA)>
then your
graph element might look something like this:
<!ELEMENT graph ( text*, (n,text*)?, (img,
text))>
hope this
helps.
later,
-s-
From: Rita Shen [mailto:shaledova@...]
Sent: Monday, June 25, 2007 3:31 AM
To: Bjoern
Hoehrmann
Cc: xml-dev@...
Subject: Re: [xml-dev]
Problem with Entity parameter
Hi, Bjoern,
Thanks for your reply! What shuld I do if I want to limit the exact
accurrance for each sub-element in the element Gragh? I mean I want to
have:
0 or more "PCDATA" and "n" but 1 or more "img" in it.
Cheers,
syt
<!ELEMENT Graph (#PCDATA|n|img)*>
On 6/25/07, Bjoern
Hoehrmann <derhoermi@... >
wrote:
*
Rita Shen wrote:
>I got a problem with converting SGML DTD to XML DTD.
In the converted XML
>DTD, I have the below entity definition:
>
><!ENTITY % MyText "#PCDATA">
>
>In the
element Graph,
>
><!ELEMENT Graph ((%MyText;)*, (n,
(%MyText;)*)?, (img, (%MyText;)
If you have mixed content you only
constrain which child elements are
allowed, not the order in which they
have to occur or their number:
<!ELEMENT Graph
(#PCDATA|n|img)*>
See http://www.w3.org/TR/xml/#sec-mixed-content for more
information.
--
Björn Höhrmann · mailto:bjoern@... · http://bjoern.hoehrmann.de
Weinh. Str. 22 · Telefon:
+49(0)621/4309674 · http://www.bjoernsworld.de
68309 Mannheim · PGP Pub.
KeyID: 0xA4357E78 · http://www.websitedev.de/
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