I have a set of problems in the following format:
<set>
<p class="directions">Write <span class="letter">S</span> if <span
class="term">sentence</span>; write <span class="letter">F</span> if <span
class="term">fragment</span></p>
<p class="nl">	1.	Sentence (or fragment) here.</p>
<p class="nl">	2.	Another sentence/fragment here.</p>
<p class="nl">	3.	Yet another.</p>
</set>
For a dropdown menu object, I need to replicate the choices in the directions
for each item and number the choices sequentially starting with zero:
<write_choices>
<!-- These are the choices for item 1-->
<write_choice num='0' letter='S' term='sentence'/>
<write_choice num='1' letter='F' term='fragment'/>
<!-- These are the choices for item 2-->
<write_choice num='2' letter='S' term='sentence'/>
<write_choice num='3' letter='F' term='fragment'/>
<!-- These are the choices for item 3-->
<write_choice num='4' letter='S' term='sentence'/>
<write_choice num='5' letter='F' term='fragment'/>
</choices>
Not all sets of problems have just two choices like this one. Some have three,
others have more. Because of the variable number of choices, I decided to use
grouping. For example, here is a section of the transform that produces a
perfect set of <write_choice> elements for each item. The selected node is <p
class="nl"> and a copy of <p class='directions'> is stored in <xsl:variable
name="myDir" />
<write_choices>
<xsl:for-each-group select="$myDir/p/*"
group-starting-with="span[@class='letter']">
<write_choice>
<xsl:attribute name="letter">
<xsl:value-of
select="current-group()[1][self::span[@class='letter']]"/>
</xsl:attribute>
<xsl:attribute name="term">
<xsl:value-of
select="current-group()[2][self::span[@class='term']]"/>
</xsl:attribute>
</write_choice>
</xsl:for-each-group>
</write_choices>
output:
<write_choices>
<write_choice letter="S" term="sentence"/>
<write_choice letter="F" term="fragment"/>
</write_choices>
Now things get challenging. In order to number these sequentially, I am trying
to use <xsl:iterate>
This is my first time using xslt 3.0 in any meaningful way, so I am feeling out
of my depth somewhat.
As before, the selected node is <p class="nl">.
I have stored a copy of the <p class='directions'> in <xsl:variable
name="myDir" />
I have also stored the item number in <xsl:variable name="myitemNum" /> from
which 1 has been subtracted to kick things off at zero.
Here then is the same section with the <xsl:iterate> added:
<write_choices>
<xsl:for-each-group select="$myDir/p/*"
group-starting-with="span[@class='letter']">
<xsl:iterate select=".">
<xsl:param name="startNum" select="$myitemNum"
as="xs:integer"/>
<xsl:variable name="nextNum" select="$startNum + 1"/>
<write_choice>
<xsl:attribute name="writeNum">
<xsl:value-of
select="$startNum"/>
</xsl:attribute>
<xsl:attribute name="letter">
<xsl:value-of
select="current-group()[1][self::span[@class='letter']]"/>
</xsl:attribute>
<xsl:attribute name="term">
<xsl:value-of
select="current-group()[2][self::span[@class='term']]"/>
</xsl:attribute>
</write_choice>
<xsl:next-iteration>
<xsl:with-param name="startNum" select="$nextNum"
as="xs:integer"></xsl:with-param>
</xsl:next-iteration>
</xsl:iterate>
</xsl:for-each-group>
</write_choices>
The output of this particular iteration (ha!) of this transform looks like this:
<write_choices>
<write_choice writeNum="0" letter="S" term="sentence"/>
<write_choice writeNum="0" letter="F" term="fragment"/>
</write_choices>
...
<write_choices>
<write_choice writeNum="1" letter="S" term="sentence"/>
<write_choice writeNum="1" letter="F" term="fragment"/>
</write_choices>
I guess I am not clear on how to select each group and apply the iteration to
it so that the output would look like this:
<write_choices>
<write_choice writeNum="0" letter="S" term="sentence"/>
<write_choice writeNum="1" letter="F" term="fragment"/>
</write_choices>
...
<write_choices>
<write_choice writeNum="2" letter="S" term="sentence"/>
<write_choice writeNum="3" letter="F" term="fragment"/>
</write_choices>
There is the added issue of the $myitemNum variable sneaking into the mix. I
suspect that my <xsl:next-iteration> with-param is being overwritten by
$myitemNum with each new <p class=“nl”>.
I hope this query is clear enough.
Any help would be most appreciated.
Thanks.
Terry
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