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  • From: "Rita Shen" <shaledova@g...>
  • To: "Kekesi, Sandor (LNG-EWR)" <Sandor.G.Kekesi@l...>
  • Date: Wed, 27 Jun 2007 11:44:19 +1000

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@l...> 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@g...]
Sent: Monday, June 25, 2007 3:31 AM
To: Bjoern Hoehrmann
Cc: xml-dev@l...
Subject: Re: 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@g... > 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-contentfor more information.
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