Name
xslt_stale — force reload of XSL stylesheet
Synopsis
xslt_stale
(
|
in
uri
varchar
); |
Description
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.
Parameters
uri
The location of the style sheet to force a reload.
Errors
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.
Examples
Example 24.576. Simple Use
sheet := 'virt://WS.WS.SYS_DAV_RES.RES_FULL_PATH.RES_CONTENT:/DAV/stylesheets/document.xsl';
xslt_stale (sheet);
xslt(sheet, xml_doc_tree);