Subject: Re: [xsl] xsl:accumulator and temporary trees From: "Christophe Marchand cmarchand@xxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Thu, 13 Feb 2020 07:36:52 -0000 |
See you, Christophe
Am 12.02.2020 um 15:01 schrieb Christophe Marchand cmarchand@xxxxxxxxxx:Hello,
I use an accumulator to calculate height of block elements in a page.
My accumulator is defined like this :
B <xsl:accumulator name="height.counter" as="xs:double"
initial-value="0.0">
B B B <xsl:accumulator-rule match="page" select="2.3"/>
B B B <xsl:accumulator-rule match="li1" select="$value + 1.9" phase="end"/>
B B B <xsl:accumulator-rule match="li2" select="$value + 1.8" phase="end"/>
B B B <xsl:accumulator-rule match="li3" select="$value + 1.34"
phase="end"/>
B B B <xsl:accumulator-rule match="private:block" select="$value +
xs:double(./@height)" phase="end"/>
B </xsl:accumulator>
Modes are defined like this :
B <xsl:mode name="private:acc" on-no-match="shallow-skip" use-accumulators="#all"/> B <xsl:mode use-accumulators="#all"/>
For a special element, I calculate the block height, and I proceed like this :
B B B <xsl:variable name="block" as="element(private:block)"> B B B B B <private:block height="{$height}"/> B B B </xsl:variable> B B B <xsl:apply-templates mode="private:acc" select="$block"/>
li1, li2 and li3, which are in source tree and processed in default mode do modify accumulator value. But my accumulator is never incremented when a private:block is processed.
Any suggestion will be much appreciated.
Accumulators, like keys, work on a tree, if you have some nodes in one tree and the temporarily created element that is obviously in a different tree then the accumulators of the temporarily created tree are computed independently of the input tree.
I think you need to push the input through a mode that adds the private:block elements and then you need to push that complete, temporarily created tree through a new mode where you want to use the accumulator.
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