• To: Fernando Cubria <fcubria@l...>
• Subject: Re: dtd mixed content
• From: XML Patterns <xmlpatterns@x...>
• Date: Tue, 02 Mar 2004 09:36:33 -0800
• Cc: "xml-dev@l..." <xml-dev@l...>
• In-reply-to: <20040302170654.C24A93C8DD@s...>
• References: <20040302170654.C24A93C8DD@s...>
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040113

Fernando Cubria wrote:

>Hello:
>¿Is there a way to tell, in dtd syntax, that a "link" element can contain any combination of text and "b" elements or just one "img" element?
>I have tried with
><!ELEMENT link  ((#PCDATA | b)* | img) >
>but I get an error.
>  
>
No, there is no way to do this with a DTD.  The Mixed content model (http://www.w3.org/TR/2000/REC-xml-20001006#sec-mixed-content) does not allow for this type of construction.

I think the best you could hope for is to use two different element types, e.g.
<!ELEMENT image-link (img)>
<!ELEMENT mixed-link (#PCDATA|b)* >
or, to just allow the definition to be "looser" than you wanted 
<!ELEMENT link  (#PCDATA | b | img)* >

-- 

Toivo Lainevool
http://www.xmlpatterns.com - Develop effective DTDs and XML Schema documents for your XML using structural design patterns.

• References:
  • dtd mixed content
    • From: Fernando Cubria <fcubria@l...>

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