Hi Brent,
The XQuery Data Model discards the DOCTYPE declarations, as they are only hints
to the parser, and are therefore gone for XML documents in the database (they
are already parsed). So you cannot query the DOCTYPE in an XML document. If
you wanted to query type information, you could convert the DTD to a schema and
then load the schema, which is XML and therefore queryable. Another idea is to
enrich your documents upon loading and place the PUBLIC name in the document
somewhere. For example, you can add it as an attribute on the root element of
the document like this:
<my-root PUBLIC="-//W3C//DTD MathML 2.0//EN">
If you have a range index on the PUBLIC attribute, then you can do a cts:uris
with a range query that specifies the attribute value you are interested.
something like:
cts:uris("", (), cts:element-range-query(xs:QName("my-root"),
xs:QName("PUBLIC"), "=",
"-//W3C//DTD MathML 2.0//EN"))
This probably will not help your current situation though...
The only other idea I have is if you know of something about each document in a
given DTD that is unique. If so, you can then write a query that searches for
the that content and use it to constrain your URI search.
-Danny
From: [email protected]
[mailto:[email protected]] On Behalf Of Hartwig, Brent
(CL Tech Sv)
Sent: Thursday, December 18, 2008 10:38 AM
To: General Mark Logic Developer Discussion
Subject: RE: [MarkLogic Dev General] How best to identify all
referencedcontentmodels?
Hi, Danny,
Yes, the URI lexicon is enabled. That has told me how many XML files I have.
Other than limiting processing to the XML files, I'm not sure how this helps.
Maybe I'm under-utilizing this? I do not have any applicable range indexes in
place today.
Regarding DTDs and namespaces, you can have XML files conforming to DTDs where
namespaces are not defined. You only get the doctype declaration before the
root node; i.e.:
<!DOCTYPE mathml PUBLIC "-//W3C//DTD MathML 2.0//EN" "mathml2/mathml2.dtd">
<mathml [no namespace atts]>...</>
In the above case, I'd like to retrieve public ID of "-//W3C//DTD MathML
2.0//EN" and system ID of "mathml2/mathml2.dtd", or simply the entire doctype
declaration.
Thank you.
-Brent
________________________________________
From: [email protected]
[mailto:[email protected]] On Behalf Of Danny Sokolsky
Sent: Thursday, December 18, 2008 1:12 PM
To: General Mark Logic Developer Discussion
Subject: RE: [MarkLogic Dev General] How best to identify all referenced
contentmodels?
Hi Brent,
Do you have the URI lexicon enabled for your database? It might help. Also,
do you have any range indexes on the element or attributes in question? Then
you can do range queries or lexicon lookups on those values. I am not sure
what you mean by your concern about DTDs and namespaces. Perhaps if you gave a
sample XML snippet or two showing what the "public and system IDs" look like,
that might help with a more specific answer.
-Danny
From: [email protected]
[mailto:[email protected]] On Behalf Of Hartwig, Brent
(CL Tech Sv)
Sent: Thursday, December 18, 2008 9:48 AM
To: General Mark Logic Developer Discussion
Subject: [MarkLogic Dev General] How best to identify all referenced
contentmodels?
Hello and Happy Holidays,
I'm trying to identify the public and system IDs of all content models our XML
files reference. The XML files are in ML 3.2 and may conform to a DTD or XML
Schema. Given the number of XML files, I would prefer not take the I/O hit for
each file. I am also interested in the reverse: URIs of XML files not defining
the content model. I see many namespace-related functions but am concerned this
will not help the majority of files conforming to DTDs. Any ideas? Thank you in
advance.
-Brent
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