RE: Locator info for a net.sf.saxon.trans.DynamicError

> I'm using Saxon 8.4.
> 
> Processing one of my documents throws this:
> 
> net.sf.saxon.trans.DynamicError: A sequence of more than one 
> item is not
> allowed as the first argument of fn:substring()
> 
> Is there any way to retrieve locator information from this 
> Error (wrapped
> as a SAXException), e.g. the line of the instruction in my XSLT that
> causes this?

DynamicError is derived from the JAXP class TransformerException, which
offers a getLocator() method providing location information. Your error
handler needs to cater for the possibility that there won't be any location
information, but this is unusual.

> 
> I'm quite sure that I have correctly attached an ErrorListener to a
> net.sf.saxon.TransformerFactoryImpl(), and ErrorHandler objects to the
> XMLReader objects I use.
> 

The important thing is to attach an ErrorListener to the JAXP Transformer
object. The ErrorListener nomintated to the TransformerFactory is used only
at compile time, and the ErrorHandler nominated to the XMLReader is used
only by the XML parser, not by the XSLT processor. (However, an XSLT
exception will often find its way to the parser's ErrorHandler, wrapped up
inside a SAXException).

Michael Kay
http://www.saxonica.com/




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