Re: [xsl] Something similar to managing behavior with a variable

["Luke Shannon" <lshannon@xxxxxxxxxxxxxxx>]

Thank you Michael. Option D seems to make the most sense to me.

----- Original Message ----- 
From: "Michael Kay" <mike@xxxxxxxxxxxx>
To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Tuesday, April 05, 2005 2:36 PM
Subject: RE: [xsl] Something similar to managing behavior with a variable


>
> Here are some of the design patterns you might consider:
>
> (a) computing the column number based on the counting selected nodes in
the
> source tree (using count() or xsl:number)
>
> (b) computing the number based on the position of the node in the current
> node list (the position() function)
>
> (c) "iterating" over the nodes by head-tail recursion, maintaining a
counter
> as you do so (by passing a parameter on the recursive call)
>
> (d) a two-phase transformation in which you generate the output nodes as a
> plain sequence in the first pass and then number them or group them (or
> colour them) in a second pass.
>
> Michael Kay
> http://www.saxonica.com/
>
>
>
> > -----Original Message-----
> > From: Luke Shannon [mailto:lshannon@xxxxxxxxxxxxxxx]
> > Sent: 05 April 2005 18:57
> > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> > Subject: [xsl] Something similar to managing behavior with a variable
> >
> > Hello;
> >
> > I'm creating a UI that writes rows of data. The background of
> > the row needs
> > to changes every second row. I was doing it like this:
> >
> > <tr align="left" valign="middle" class="grey1ColumnText">
> > <xsl:choose>
> > <xsl:when test='number($position) mod 2 != 0'>
> > <xsl:attribute name="class">grey1ColumnText</xsl:attribute>
> > </xsl:when>
> > <xsl:otherwise>
> > <xsl:attribute name="class">grey2ColumnText</xsl:attribute>
> > </xsl:otherwise>
> > </xsl:choose>
> > </tr>
> >
> > My problem now is now have a condition that determines when a
> > row is to be
> > written. So, in a collection of 5 items maybe only 1 and 4
> > get written. I
> > still need a way to figure out how to alternate the
> > background for the rows
> > that actually get written. Position no longer does the trick.
> >
> > I thought I could keep the previous background in a variable
> > like below:
> >
> > <tr align="left" valign="middle" class="grey1ColumnText">
> > <xsl:choose>
> > <xsl:when test="$resultBK = 'grey1ColumnText'">
> > <xsl:attribute name="class">grey2ColumnText</xsl:attribute>
> > <xsl:variable name="resultBK" select="string('grey2ColumnText')"/>
> > </xsl:when>
> > <xsl:otherwise>
> > <xsl:attribute name="class">grey1ColumnText</xsl:attribute>
> > <xsl:variable name="resultBK" select="string('grey1ColumnText')"/>
> > </xsl:otherwise>
> > </xsl:choose>
> > </tr>
> >
> > But I have just found out you can't change the contents of a
> > global variable
> > (resultBK) after it has been defined. How can I handle this?
> >
> > Thanks,
> >
> > Luke
> >
> > Luke Shannon | Software Developer
> > FutureBrand Toronto
> >
> > 207 Queen's Quay, Suite 400
> > Toronto, ON, M5J 1A7
> > 416 642 7935 (office)