Re: [xsl] Stylesheet composition

Subject: Re: [xsl] Stylesheet composition
From: Garvin Riensche <g.riensche@xxxxxxx>
Date: Thu, 15 Nov 2007 19:48:49 +0100
Hi,

You mean, first let stylesheet1 add the new elements:

<aaa>3</aaa>
<aaa>4</aaa>

than let stylesheet2 do the addition

<aaa>4</aaa>
<aaa>5</aaa>

and the add the first two <aaa> to get the desired result?

This might work for this simple example but if it gets more complex, for example if stylesheet1 does more than just simply adding these elements, I can't use the first stylesheet without applying it to the original source.

regards,
Garvin


Hi,

Why not simply add your principal source content after stylesheet1 and 2
do their work?

best,
-Rob


On Thu, 2007-11-15 at 18:42 +0100, Garvin Riensche wrote:
Hello,

I am currently thinking about the limitations of stylesheet compositions. As far as I know stylesheets can run after another where the subsequent one might work on the complete result of the precesding one (using temporary trees). I think it is impossible to let the second stylesheet run only on the data the first one added to the source xml without changing the stylesheets. Let me pose an example:

XML:
<aaa>1</aaa>
<aaa>2>/aaa>

Stylesheet1 just adds some more <aaa> to the source, so that the xml after the transformation looks like:

<aaa>1</aaa>
<aaa>2</aaa>
<aaa>3</aaa>
<aaa>4</aaa>

Stylesheet2 matches the "aaa" elements and applies some transformation, e.g. an addition, plus one, so that the output would be:

<aaa>2</aaa>
<aaa>3</aaa>
<aaa>4</aaa>
<aaa>5</aaa>

My question is the following: Is it possible, without changing stylesheet1 or stylesheet2, to let stylesheet2 run only on the elements stylesheet1 has added, so that the output would look like:

<aaa>1</aaa>
<aaa>2</aaa>
<aaa>4</aaa>
<aaa>5</aaa>
?

If this is not possible, would this be something the XML community is interested in?
I think it would be nice to have some kind of operator that would tell the second stylesheet if it should work on the complete result of the first one or only on the added elements.


Has someone already done any research about the limitations of stylesheet composition and proposed an improvement? Or is the XML community just fine with current facilities of stylesheet composition?

regards,
Garvin Riensche

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