On 27.07.2005 15:54, Antonio Fiol Bonnín wrote:
> I have been changing my transforms to execute with XSLTC instead of
> interpreted Xalan. However, some of them did not work properly, showing
> erratic behaviour, or even throwing NullPointerException.
>
> In most cases (if not all), I have tracked the problem to usage of the
> document() function to get information from another source document. When
> this function is used, the context node is lost, and thus strange things
> happen.
>
> When I say "the context node is lost", I mean that AFTER the call to
> document():
> - any xpath expressions I've tried lead to erratic behaviour AND
> - in some cases, the "flow" of pattern applying gets wrong (usually aborting
> an apply-templates before applying to all the selected elements, and
> possibly adding spurious non-empty text nodes on the output).
>
> Has anyone also found this problem? If so, is there another solution apart
> from not using document() or not using xsltc? Is it a xsltc bug, a cocoon
> bug or not a bug at all?
Are you sure you have only retrieved a node using document() and not
switched the context to the other document?
Well, I think so...
This is one of the failing templates:
<xsl:template match="*" mode="cell">
<xsl:variable name="nombre">html:<xsl:value-of select="name()"/></xsl:variable>
<xsl:choose>
<xsl:when test="document('')/xsl:stylesheet/xsl:template[contains(@match,$nombre) and @mode='inline']">
<xsl:apply-templates select="." mode="inline"/>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates select="." mode="block"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
The intention of this template is doing a sort of reflection upon the stylesheet. Adding e.g. an <xsl:comment> before both <xsl:apply-templates> shows that the right <xsl:apply-templates> is executed. However, it is executed against the <xsl:apply-templates> element itself!! which is not the intended behaviour.
In a particular case (which I have not been able to track down to a simple example), it even leads to a NullPointerException.
--
Antonio
