Hi,
You asked,
[A quick question, when I tried to get the type-name using the fully
namespaced name...
<xsl:variable name="type-name" select="./@xsi:type"/>
...nothing was returned, why?]
The value of the attribute @xsi:type is a reference to the type. It usually
appears as a qualified name which is prefix + ":" + localname, e.g.
pre:typename.
In your schema, the value of the attribute @name on a type definition only
contains the local name of the type,
<xsd:complexType name="typename">
...
</xsd:complexType>
So the path expression "$schemas//xsd:complexType[(_at_)name = $type-name]"
would result in nothing as the left side of the "=" is a local name "typename"
while the right side is a qualified name "pre:typename".
You could construct a type QName from the qualified name provided by @xsi:type
using the constructor xsd:QName(@xsi:type) and then retrieve the local name
using the function local-name-from-QName().
<!-- construct a type QName from a type lexical QName -->
<xsl:variable name="type-QName" select="xsd:QName(./@xsi:type)"/>
<!-- retrieve the type local name from the type QName -->
<xsl:variable name="type-localname"
select="local-name-from-QName($type-QName)"/>
<!-- use the type local name to match the complex type definition with a name
attribute specifying the type local name-->
<xsl:variable name="schema-obj"
select="$schemas//xsd:complexType[(_at_)name = $type-localname]"/>
The alternative is to directly call the function in the library
xsdf:get-global-type-def($type-QName, $schemas), pass the type QName to the
function as the value of the first parameter,
It would return the type definition element with the specified type QName.
Lisa
-----Original Message-----
From: Luke Stedman [mailto:luke(_dot_)stedman(_at_)gmail(_dot_)com]
Sent: Friday, April 02, 2010 2:58 AM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] Xpath/XSLT 2.0 & Schema Question
Xia,
Thanks, that seems to have done the trick.
<xsl:variable name="schemas"
select="xsdf:load-schemas-by-URI('schema.xsd')"/>
...
<xsl:template match="*[(_at_)name]">
<xsl:variable name="type-name" select="./@*:type"/>
<xsl:variable name="schema-obj"
select="$schemas//xsd:complexType[(_at_)name = $type-name]"/>
<xsl:variable name="class-name"
select="$schema-obj//classes/base"/>
...
The above works perfectly for what I want to achieve, i.e. get the
base class out of the schema.
A quick question, when I tried to get the type-name using the fully
namespaced name...
<xsl:variable name="type-name" select="./@xsi:type"/>
...nothing was returned, why?
I am using Saxon 9.2 via .Net.
Michael,
Your comment with regards schema awareness and information being used
by the XSLT processor, what information is used and where/how?
Thanks for your help/pointers.
Luke
On 1 April 2010 17:41, Xia Li <xli(_at_)galdosinc(_dot_)com> wrote:
Hi
The element test "element(*, $type)" in your code matches an
*instance* element node whose type definition is of $type or derived from
$type. It cannot be used to retrieve the corresponding type definition in
your schema.
If you need to make use of schema information, you might take a look
at the library here http://www.ibm.com/developerworks/library/x-schemanode/.
There is a function xsdf:get-global-type-def() in the library that can be
used to retrieve the type definition with a given type name from your schema.
Lisa
-----Original Message-----
From: Luke Stedman [mailto:luke(_dot_)stedman(_at_)gmail(_dot_)com]
Sent: Thursday, April 01, 2010 8:59 AM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Xpath/XSLT 2.0 & Schema Question
Apologies in advance for what is probably a very simple/basic/stupid question.
I have just started using XSL 2.0, having had enough of the
restrictions of XSL 1.0, and am trying to write a XSL that is schema
aware.
I would like to process an XML file and add information/process
something based on the schema, for example adding class information to
XML output or processing an element in a specific way if we want a
console script or Python script output.
I have tried for the last couple of hours to get the code working but
seem to be unable to, a small snippet of code is below...
<xsl:template match="*[(_at_)name and @xsi:type]">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:attribute name="action" select="'new'"/>
<xsl:variable name="name" select="name(.)"/>
<xsl:variable name="type" select="current()/@xsi:type"/>
<xsl:variable name="object" select="element(*, $type)"/> <!-- I
want to get the relevant schema entry here -->
<xsl:message>
++++
<xsl:value-of select="current()/@name"/>
<xsl:variable name="type" select="current()/@xsi:type"/>
<xsl:value-of select="$object//base"/>
++++
</xsl:message>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
Am I misunderstanding the functionality or doing something wrong?
If I have missed a relevant post on the list or obvious link then
please point me in its direction, I was unable to find one using a
search.
Apologies again for any stupid comments/expectations.
Luke
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