Subject: RE: [xsl] mystery #2: testing document() without failure From: "Michael Kay" <michael.h.kay@xxxxxxxxxxxx> Date: Sat, 13 Apr 2002 16:31:59 +0100 |
> So is it wrong to rely on something like (if processor > independence is > important): > > <xsl:variable name="test" select="document('test.xml')/test"/> > <xsl:choose> > <xsl:when test="boolean($test)"> > <xsl:apply-templates select="$test"/> > </xsl:when> > <xsl:otherwise> > <!-- error display --> > </xsl:otherwise> > </xsl:choose> > > it works in saxon. > Yes, it's explicitly implementation-defined what happens when the document referred to by the document() function doesn't exist. Either you get an error, or you get an empty node-set. Saxon gives you a user option to choose whether the error is fatal or not (this is a global switch that applies to all recoverable dynamic errors, not to this one explicitly). There are three settings: ignore the error and take the prescribed recovery action; issue a warning message and take the recovery action; produce a fatal error and stop. But there's no portable way of setting such options. Michael Kay Software AG home: Michael.H.Kay@xxxxxxxxxxxx work: Michael.Kay@xxxxxxxxxxxxxx XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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