You haven't said what the contents of the main input document are, nor what
the supplied value of the parameter xm is. Without that, it's impossible for
anyone to work out what this stylesheet does.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Karl Stubsjoen [mailto:kstubs(_at_)gmail(_dot_)com]
Sent: 02 June 2005 22:43
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] Param Element
Here is what I have, but not confident that it is working... it seems
that my check for uniqueness is failing, I get no results. Isn't it a
fair test to ask of a value it it exists in a set of values as I am
here:
<xsl:if test="$current_id = $activity_id">
Where activity_id is a set of ID values as defined below..
<xsl:param name="xm" select="in_proc" />
<xsl:variable name="activity_id" select="in_proc/row/@id"/>
<xsl:template match="/">
<in_proc>
<xsl:apply-templates select="row"/>
<xsl:apply-templates select="$xm/row" mode="append"/>
</in_proc>
</xsl:template>
<xsl:template match="row">
<xsl:copy-of select="."/>
</xsl:template>
<xsl:template match="row" mode="append">
<xsl:variable name="current_id" select="@id"/>
<xsl:if test="$current_id = $activity_id">
<xsl:copy-of select="."/>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
On 6/2/05, David Carlisle <davidc(_at_)nag(_dot_)co(_dot_)uk> wrote:
One other dilemna: in order for the transformation to
not complain, I
have to do a select on my parameter declerations which looks like:
<xsl:param name="xm" select="/" />
If you pass in a value of this parameter then the select here is not
used, it is just a default value in case no parameter is
supplied when
the stylesheet is called.
But since the source is the exact same as the parameter
xml, how does
the select know which source to grab from?
The select is always explictly into a specified node set
that node set
will have nodes from one or more documents (usually just one).
in this case, you have select="/" so that selects the root
node ancestor
of the current node. If this is at the top level of teh
stylesheet the
current node is the root node of the main input document,
so / selects
that node.
Also, the above causes an
overflow when the below transformation is processed,
most likely you have programmed an infinite loop, but it's
hard to say
given the snippet you showed.
so would it be correct to express select as: select="in_proc"?
That's also correct (but dofferent of course) but still if
you supply a
value to this parameter when you run the program it doesn't
matter what
select expression you use here.
The templates that you show make no use of this parameter??
As written you will get a copy of the input doc except the top level
element will be duplicated as you generate an in_proc element in the
template for / and then apply templates to the child nodees
(which is
the in_proc element in the source) which are copied.
David
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