[MarkLogic Dev General] xhtml loading question

Wed Aug 15 11:34:51 PDT 2007

Hi James,

I'm interested in this topic and I have an question about the namespace for the
attribute:

At the data loading time, Dev declared namespace as
"http://www.w3.org/1999/xhtml 
xdmp:document-insert("/content/htmlchk66.html",
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<body>
<meta name="org" content="abc-de" />
<meta name="product" content="electronics" />
<meta name="education" content="school" />
<meta name="test" content="answer123" />
</body>
</html>)

My understanding for namespace is: if you declare the namespace, unless you
change it or it goes out of the scope, all the following elements and attributes
belong to this namespace.

But you mentioned that the attributes in Dev's data does not have any
namespace, I think I misunderstood the concept. Can you explain it more?

Thanks, Helen

>>> "James Clippinger" <James.Clippinger at marklogic.com> 08/14/07 5:41 PM >>>
Dev, the syntax you used would associate the prefix "html" with the
XHTML namespace; you could use it like this:

declare namespace html="http://www.w3.org/1999/xhtml"

cts:search(xdmp:directory(('/'),"infinity"),
cts:and-query((cts:element-attribute-value-query(xs:QName("html:meta"),
xs:QName("name"),
"org"),cts:element-attribute-value-query(xs:QName("html:meta"),
xs:QName("content"), "abc-de"))))

Now, you could use the "default element namespace" syntax to set the
default:

default element namespace="http://www.w3.org/1999/xhtml"

cts:search(xdmp:directory(('/'),"infinity"),
cts:and-query((cts:element-attribute-value-query(xs:QName("meta"),
xs:QName("name"),
"org"),cts:element-attribute-value-query(xs:QName("meta"),
xs:QName("content"), "abc-de"))))

However, this will return no results in your example, because xs:QName()
will, when given an unprefixed string, return QNames in the default
element namespace.  This is the right thing for the QNames being used as
elements, but it causes the attribute QNames not to match since they are
in the no namespace.  This version would work:

default element namespace="http://www.w3.org/1999/xhtml"
declare namespace no-namespace=""

cts:search(xdmp:directory(('/'),"infinity"),
cts:and-query((cts:element-attribute-value-query(xs:QName("meta"),
xs:QName("no-namespace:name"),
"org"),cts:element-attribute-value-query(xs:QName("meta"),
xs:QName("no-namespace:content"), "abc-de"))))

I think the html-prefix form is more intuitive than this one, but it is
legal XQuery and will work just fine.

Regards,
James

________________________________

	From: general-bounces at developer.marklogic.com 
[mailto:general-bounces at developer.marklogic.com] On Behalf Of Devadoss P
	Sent: Tuesday, August 14, 2007 5:16 PM
	To: General Mark Logic Developer Discussion
	Subject: Re: [MarkLogic Dev General] xhtml loading question

	Thanks James, it's working.

	I couldn't understand, why declaring default namespace is not
working in this case (declare namespace html =
"http://www.w3.org/1999/xhtml").

	Is it because of xhtml namespace?

	Thanks,
	Dev

	On 8/14/07, James Clippinger <James.Clippinger at marklogic.com >
wrote: 

		Dev, you need to include the XHTML namespace in the
element QNames you create for use in the cts:search() if you want the
query to match those elements.  This would work: 

		cts:search(xdmp:directory(('/'),"infinity"),
cts:and-query((cts:element-attribute-value-query(fn:QName("
http://www.w3.org/1999/xhtml <http://www.w3.org/1999/xhtml> ", "meta"),
xs:QName("name"), "org"),cts:element-attribute-value-query(fn:QName("
http://www.w3.org/1999/xhtml <http://www.w3.org/1999/xhtml> ", "meta"),
xs:QName("content"), "abc-de")))) 

		Note that the attribute QNames don't require namespace
URIs because, having not been prefixed in the original source, they are
in the no namespace.  If you wanted to use the fn:QName() function for
consistency, this form also works: 

		cts:search(xdmp:directory(('/'),"infinity"),
cts:and-query((cts:element-attribute-value-query(fn:QName("
http://www.w3.org/1999/xhtml <http://www.w3.org/1999/xhtml> ", "meta"),
fn:QName("", "name"),
"org"),cts:element-attribute-value-query(fn:QName("
http://www.w3.org/1999/xhtml <http://www.w3.org/1999/xhtml> ", "meta"),
fn:QName("", "content"), "abc-de")))) 

		Regards,
		James

________________________________

			From: general-bounces at developer.marklogic.com 
[mailto:general-bounces at developer.marklogic.com] On Behalf Of Devadoss P
			Sent: Tuesday, August 14, 2007 4:49 PM 

			To: General Mark Logic Developer Discussion
			Subject: Re: [MarkLogic Dev General] xhtml
loading question

			James,

			This is the query used to load the document,
			xdmp:document-insert("/content/htmlchk66.html",
			<html xmlns="http://www.w3.org/1999/xhtml "
xml:lang="en" lang="en">
			<body> 
			<meta name="org" content="abc-de" />
			<meta name="product" content="electronics" />
			<meta name="education" content="school" /> 
			<meta name="test" content="answer123" /> 
			</body>
			</html>)

			and my cts query is 
			cts:search(xdmp:directory(('/'),"infinity"),
cts:and-query((cts:element-attribute-value-query(xs:QName("meta"),
xs:QName("name"),
"org"),cts:element-attribute-value-query(xs:QName("meta"),
xs:QName("content"), "abc-de")))) 

			This query returns result, if I load document
without xmlns.

			Thanks,
			Dev

			On 8/14/07, James Clippinger
<James.Clippinger at marklogic.com > wrote: 

				Dev, can you send the cts:search() call
you're using for your search?

				Thanks,
				James

________________________________

				From:
general-bounces at developer.marklogic.com [mailto:
general-bounces at developer.marklogic.com] On Behalf Of Devadoss P
				Sent: Tuesday, August 14, 2007 4:33 PM 
				To: General Mark Logic Developer
Discussion
				Subject: Re: [MarkLogic Dev General]
xhtml loading question

				James and Mike,

				How to resolve
(xmlns="http://www.w3.org/1999/xhtml") namespace conflict in xquery; I
loaded html document (which has xmlns namespce defined) to MarkLogic and
tried to query its element by using cts:search(), but it returns empty
row. 

				Can you help me to resolve namespace
issue?

				Thanks,
				Dev

				On 8/14/07, Alex Rice
<alexr at santafe.edu> wrote: 

				James and Michael:

				i had not even thought of namespaces.
now I am getting nodes back and
				can use the declare namespace feature
etc. Thank you both for 
				responding.

				Alex Rice

				On 8/14/07, James Clippinger
<James.Clippinger at marklogic.com > wrote:
				> Alex, I'm not familiar with the XHTML
created by Dreamweaver or UpCast, 
				> but I suspect the XHTML elements both
tools create are in the XHTML
				> namespace.  Try this (keeping in mind
the wildcard-namespace syntax may 
				> be slow):
				>
				>
doc("/SFI/Update/news/articletest2/test.xml")//*:p 
				>
				> If it returns items, you can see which
namespace each item is in and go
				> from there.
				>
				> Regards, 
				> James
				>

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