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Posted to j-users@xerces.apache.org by Mike O'Leary <tm...@comcast.net> on 2007/03/01 10:41:10 UTC
Converting entities in an SGML DTD file to comply with XML DTD syntax
I am working with a collection of XML documents that I need to parse in
order to index them in Lucene. There is a DTD file that describes the
structure of these documents, but when I started working with it I found out
that it was an SGML DTD file. I found some advice on the internet about how
to convert an SGML DTD file so that it complies with XML DTD standards, and
I made changes to enable the DTD file to be used by an XML parser. There was
one !ENTITY declaration that I didn't know what to do with. It looks like
this:
<!ENTITY #DEFAULT SYSTEM >
Things seem to work ok if I just comment this out, but I wonder what it is
for, and whether there is a way to make it acceptable to an XML parser in
such a way that it does what the original author meant for it to do.
Apparently the XML parser doesn't like the # at the start of #DEFAULT.
Thanks.
Mike O'Leary
Re: Converting entities in an SGML DTD file to comply with XML DTD syntax
Posted by Michael Glavassevich <mr...@ca.ibm.com>.
I think "<!ENTITY #DEFAULT" declares a default entity to use for
references to undeclared entities. There's no equivalent in XML.
Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: mrglavas@ca.ibm.com
E-mail: mrglavas@apache.org
"Mike O'Leary" <tm...@comcast.net> wrote on 03/01/2007 04:41:10 AM:
> I am working with a collection of XML documents that I need to parse
> in order to index them in Lucene. There is a DTD file that describes
> the structure of these documents, but when I started working with it
> I found out that it was an SGML DTD file. I found some advice on the
> internet about how to convert an SGML DTD file so that it complies
> with XML DTD standards, and I made changes to enable the DTD file to
> be used by an XML parser. There was one !ENTITY declaration that I
> didn?t know what to do with. It looks like this:
>
> <!ENTITY #DEFAULT SYSTEM >
>
> Things seem to work ok if I just comment this out, but I wonder what
> it is for, and whether there is a way to make it acceptable to an
> XML parser in such a way that it does what the original author meant
> for it to do. Apparently the XML parser doesn?t like the # at the
> start of #DEFAULT. Thanks.
> Mike O?Leary
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