Why is this not valid ?

brothercake · 11-29-2002, 03:27 PM

Here's an excerpt from the DTD

Code:

<!DOCTYPE kar_trends [

<!ELEMENT kar_trends (subject)*>
<!ELEMENT subject (about,study)>
<!ELEMENT about (#PCDATA)>
<!ELEMENT study (#PCDATA)>

<!ENTITY coi "Captains of Industry">

<!ATTLIST study year CDATA #REQUIRED>
<!ATTLIST study season CDATA #REQUIRED>

]>

And here's a sample of the XML

Code:

<kar_trends>

	<subject>
		<about>3com</about>
		<study year="1998" season="w">&coi;</study>
	</subject>

</kar_trends>

But when I validate it I get any error message, that the STUDY element has invalid content. Huh??

mpjbrennan · 11-29-2002, 03:40 PM

what happens if you put #&coi; ?

patrick

brothercake · 11-29-2002, 04:02 PM

same thing - invalid element content

brothercake · 11-29-2002, 05:30 PM

I found it! I was assuming, since the error pointed the line with that entity on it, that the entity was the issue. But no. In fact it was my fault - the DTD specifies only a single instance of <study> in each <subject>. It should have been:

Code:

<!ELEMENT subject (about,study+)>

I should have posted a more complete code sample - the sample I posted actually is valid by that DTD, but what I'm actually using, which produced the error, is like this:

Code:

	<subject>
		<about>3com</about>
		<study year="1998" season="w">&coi;</study>
		<study year="1999" season="w">&coi;</study>
		<study year="2000" season="w">&coi;</study>
		<study year="2000" season="w">&itp;</study>
	</subject>

doh

thanks for the help though