For an XPath 1.0 string literal embedded in an XML attribute, the rule is:
* you can include the attribute delimiter within the string literal by using
an XML character reference
* you can't include the string literal delimiter within the string literal,
however hard you try
So the simplest approach if you want to use apos within a string literal is
to use apos as the attribute delimiter, quot as the string delimiter, and
' for the character itself.
It's also possible to use the same delimiter for the attribute and for the
string literal provided that the latter is ampersand-escaped; in this case
you can use the other delimiter unescaped within the string to represent
itself.
In an XSLT context, you can get around this using variables, but I don't
know if that's an option in Schematron.
It becomes easier with XPath 2.0, which allows the string delimiter to be
escaped within the string by doubling it.
Michael Kay
http://www.saxonica.com/
> -----Original Message-----
> From: Paul Spencer [mailto:]
> Sent: 18 January 2007 17:47
> To: Xml-Dev
> Subject: [xml-dev] Schematron and apostrophes
>
> I have a rule in Schematron 1.5 to test for characters
> outside those allowed in a text string (I have shortened the
> list of characters here):
>
> <report test="@AddressFormat='BS7666' and
> string-length(translate(add:*/add:Description,'?@%'&(
> )*+,-. ','')) > 0">A BS7666 AON description must only
> contain the specified characters</report>
>
> The problem I have is with the '. This is the result of
> the transformation using skeleton1-5.xslt:
>
> <xsl:if test="@AddressFormat='BS7666' and
> string-length(translate(add:*/add:Description,'?@%'&()*+,-
> . ','')) > 0">
>
> The problem is that the apostrophe entity has been resolved.
> I had wondered whether I need to escape it again
> (&apos;), but the ampersand entity is not resolved, so
> this does not work either. Swapping the apostrophe and quote
> delimiters does not help.
>
> Any ideas to either fix the way I am doing this or for a
> different way to achieve the same in Schematron? This rule
> will be used in several systems, and I cannot control the
> application environment. As far as I know, everyone is using
> MSXML, but whatever I end up with should not be
> XSLT-processor dependent.
>
> Regards
>
> Paul Spencer
>
>
> ______________________________________________________________
> _________
>
> XML-DEV is a publicly archived, unmoderated list hosted by
> OASIS to support XML implementation and development. To
> minimize spam in the archives, you must subscribe before posting.
>
> [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/
> Or unsubscribe:
> subscribe: List archive:
> http://lists.xml.org/archives/xml-dev/
> List Guidelines: http://www.oasis-open.org/maillists/guidelines.php
>
