DTD content to represent<![CDATA[..]]>

[raga]

Hi

When I have an element as
<book title ="xyz" author = "abc" >
<desc>
<![CDATA[Good book]]>
</desc>
</book

how exactly the DTD should look like.?

for the element desc which is child of book, I've tried

<!ELEMENT desc (#CDATA)>

my parser fails saying invalid element declaration.when i say

<!ELEMENT desc (CDATA)> i get one more error saying document structure
doesnt match the DTD?

could any one suggest the approriate dtd content for the same.

Thanks

 

[Bjoern Hoehrmann]

* raga wrote in comp.text.xml:

When I have an element as
<book title ="xyz" author = "abc" >
<desc>
<![CDATA[Good book]]>
</desc>
</book

how exactly the DTD should look like.?

It is neither good practise nor possible to encode a requirement to use
CDATA sections for some element in the DTD. You have to use #PCDATA and
let users decide whether to use CDATA sections.

 

[raga]

* raga wrote in comp.text.xml:

When I have an element as
<book title ="xyz" author = "abc" >
<desc>
<![CDATA[Good book]]>
</desc>
</book

how exactly the DTD should look like.?

It is neither good practise nor possible to encode a requirement to use
CDATA sections for some element in the DTD. You have to use #PCDATA and
let users decide whether to use CDATA sections.

Thanks for the reply.


at the same time,in the DTD for this element (desc) i was also
wondering why it wont allow me to use (#CDATA) and says invalid
element declaration
and when i use (CDATA) it says Document structure doenst match DTD.
and what exactly is the difference?

thanks again for your earlier reply.

 

[Richard Tobin]

at the same time,in the DTD for this element (desc) i was also
wondering why it wont allow me to use (#CDATA) and says invalid
element declaration

Because XML doesn't have a way of declaring CDATA elements.

and when i use (CDATA) it says Document structure doenst match DTD.

That specifies an element whose name happens to be "CDATA".

-- Richard

 

[Joe Kesselman]

wondering why it wont allow me to use (#CDATA) and says invalid
element declaration

#CDATA is not permitted for elements in XML; only #PCDATA. You may be
confusing XML DTDs and the SGML DTDs; XML originated as a simplification
of SGML, and SGML has many features XML does not share.

 

[Joe Kesselman]

Hi

When I have an element as
<book title ="xyz" author = "abc" >
<desc>
<![CDATA[Good book]]>
</desc>
</book

how exactly the DTD should look like.?

That's #PCDATA. The fact that this user has chosen to use a <![CDATA[]]>
section rather than escaping individual characters -- neither of which
is necessary in this example! -- is strictly a syntactic detail, not
semantic, and as far as XML is concerned the two approaches are
completely equivalent. Most XML applications don't even attempt to
distinguish the two.

Declare the element as having text content. Then, if the instance
document's text contains characters XML has trouble with, do something
appropriate.