Problem with using the XPATH functions

I've got a problem with using the XPATH functions. When I try to call some functions like lower-case or upper-case etc,they are not executed and I can't figure the problem out. I included the namespace xmlns:fn="http://www.w3.org/2005/xpath-functions" at the top of my XSL stylesheet and use fn namespace to call these functions but anyway nothing is working. Can anyone explain the reason and what I should do in order to be able to use the following func开发者_运维技巧tions?

Cheers

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Only XSLT 2.x supports XPath 2.x. Most probably you are using an XSLT 1.0 processor.

An XSLT 2.0 stylesheet has version="2.0" attribute on its <stylesheet> element. If you feed such a stylesheet to an XSLT 1.0 processor you will get some kind of error or warning message.

Therefore, either use an XSLT 2.0 processor or don't use an XPath 2.0/ XQuery F & O function with an XSLT 1.0 processor.

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If you are using XSLT 1.0, then you cannot use the functions that you have mentioned in the question.

However, you can still convert the text in lowercase using translate function.

<xsl:variable name="lowercase" select="translate($someString, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz')" />

Now You can use $lowercase.