Solved

DTD Reference from a DOMDocument

Posted on 2001-07-05
12
642 Views
Last Modified: 2013-11-19
Here's one for you MSXML gurus.

I am creating an XML file using the DOMDocument object in VB, building nodes, but I can't figure out how to reference a DTD so that MyXMLDOMDocument.xml gives me back the <!DOCTYPE> node.   Anyone know how to
1.) Reference a DTD from the DOM
2.) Create a node that references the DTD from the DOM

Thanks all!
0
Comment
Question by:hvest
  • 5
  • 4
  • 2
  • +1
12 Comments
 
LVL 2

Expert Comment

by:Lunchy
ID: 6256601
You posted this question twice.  Just to let you know I deleted the duplicate.

Lunchy
Community Support Moderator
0
 
LVL 5

Expert Comment

by:mattyk
ID: 6256715
Have you taken a look at the doctype property?  So for a sample xml like:

<?xml version="1.0"?>
<!DOCTYPE note SYSTEM "note.dtd">
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Don't forget me this weekend!</body>
</note>

the following code would give me note:

Dim objXML As New MSXML2.DOMDocument
objXML.Load ("E:\ee.xml")
debug.print(objXML.doctype.basename)
debug.print(objXML.doctype.xml)

-matty


0
 

Author Comment

by:hvest
ID: 6256836
Unfortunately, I don't have an xml file to load...I am actually building the XML on the fly using the XMLDOM and SQL data.  Thus I need to reference the DTD in the DOM so that MyDOMDocument.xml would yield:

<?xml version="1.0"?>
<!DOCTYPE note SYSTEM "note.dtd">
<blah></blah>

I can do everything but the <!Doctype> node.

Basically I either need to set the doctype property of my DOMDocument (but doctype is read-only), or reference an external DTD from inside of my DOMDocument
0
 
LVL 5

Expert Comment

by:mattyk
ID: 6257225
Well I came across this:


which hints that the only way to accomplish this is to take your current xml , convert it to a string, add the <!Doctype> node and then reload the string back into the DOMDocument object.

http://www.vbxml.com/xml/articles/dom_xml_prog/default-19.asp?printerversion=true

-matty
0
 
LVL 8

Expert Comment

by:Dave_Greene
ID: 6257298
Why not, when you first create the DOM create it by adding a string... then you can append the desired nodes

Dim objXML As New MSXML2.DOMDocument

strTemp = "<?xml version='1.0'?><!DOCTYPE note SYSTEM 'note.dtd'>"


objXML.xml = strTemp
0
 

Author Comment

by:hvest
ID: 6257306
I wonder if there is any other way?  I haven't been able to find one yet...
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:hvest
ID: 6257315
That's a good suggestion Dave, but .xml is a read-only property
0
 
LVL 8

Expert Comment

by:Dave_Greene
ID: 6257329
It's been a couple of months since I've worked with it, just found your question... I'll see what I can come up with...
0
 
LVL 8

Accepted Solution

by:
Dave_Greene earned 300 total points
ID: 6257465
Ok, here it is...  Another unfortunate limitation of XML & DTDs.  As far as accomplishing what you want in code, you will need to create a text file programmatically with your version / DTD info...

<?xml version="1.0"?>
<!DOCTYPE note SYSTEM "note.dtd">

Then you will need to load this file into your DOM

objDOM.load "C:\Temp\temp.xml"

Then append your nodes as needed.

There is no easy way around this one.

It would be nice if it worked like Matty and I initially thought (Build the string and pop it into the DOM), but no beans.

Hope this helps!

-Dave
0
 

Author Comment

by:hvest
ID: 6257517
Thanks Dave!  Looks like I just got the short end of the stick on this problem...gonna have to go with the work-around
0
 
LVL 8

Expert Comment

by:Dave_Greene
ID: 6257558
Just one last note,

When using an internal DTD you do not need to define SYSTEM OR PUBLIC  ...  or an external file name...

Just

<!DOCTYPE note>

Cheers
0
 
LVL 8

Expert Comment

by:Dave_Greene
ID: 6257563
And of course...

Whatever DTD elements

<!DOCTYPE note[
    <!-- this is where the internal DTD subset is located. -->
  ]>
  <note>

Have a good one!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Preface This is the third article about the EE Collaborative Login Project. A Better Website Login System (http://www.experts-exchange.com/A_2902.html) introduces the Login System and shows how to implement a login page. The EE Collaborative Logi…
Shoutout to Emily Plummer (http://www.experts-exchange.com/members/eplummer26.html) for giving me this article! She did most of it, I just finished it up and posted it for her :)    Introduction In a previous article (http://www.experts-exchang…
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn how to count occurrences of each item in an array.

896 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now