This function can be used to force Virtuoso to reload a cached
stylesheet from the URI when next used with xslt() or http_xslt() . Using this function before every
application of the stylesheet is extremely inefficient. If
stylesheets are stored in the database, you can use this function
in an update trigger on the table storing the stylesheets but you
don't have to use it before every application of the sheet.
This function never needs to be applied to a stylesheet URI with
the file:// protocol since xslt() and
http_xslt() will automatically detect
a stale cache entry. However if the stylesheet is stored on a
remote web server, or if the stylesheet contains subdocuments (
e.g. external XML entities, xsl:include or xsl:import statements)
this function is needed to force a reload.
The location of the style sheet to force a reload.
The function never signals any errors. E.g. it is not an error
if the specified stylesheet does not exist or if the specified
stylesheet is used by other transaction when the xslt_stale() is called.