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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Selecting previous node in newly-sorted group (not
 OBE. Solution:
2 <xsl:transform
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
3 <xsl:output method="text"/>
4
5 <xsl:template match="/">
6 <xsl:for-each-group select="//outline[@Start]" group-by="@Date">
7 <xsl:value-of select="concat(current-grouping-key(),$NL)"/>
8
9 <xsl:variable name="todaysentries">
10 <xsl:perform-sort select="current-group()">
11 <xsl:sort select="substring-before(@Start,':')"
data-type="number"/>
12 <xsl:sort select="substring-after(@Start,':')"
data-type="number"/>
13 </xsl:perform-sort>
14 </xsl:variable>
15
16 <xsl:for-each select="$todaysentries/outline">
17 <xsl:if test="position() > 1">
18 <xsl:variable name="previousposition" select="position() -
1"/>
19 <xsl:variable name="previous"
select="$todaysentries/outline[$previousposition]"/>
20 <xsl:value-of select="concat(@Date,' prev position
',$previousposition,' stopped ',$previous/@Stop,
21 ' current entry
',@Start,' ',@Stop,$NL)"/>
22 </xsl:if>
23 </xsl:for-each>
24
25 </xsl:for-each-group>
26 </xsl:template>
27
28 <xsl:variable name="NL">
29 <xsl:text>
30 </xsl:text>
31 </xsl:variable>
32
33 </xsl:transform>
On 1/27/06, Tim Lebo <timleboxslt@xxxxxxxxx> wrote:
> I have task listings in OPML that looks like the following. I am
> trying to write a transform that will point out temporal gaps existing
> between the entries of a single day (e.g. 9:00 to 9:15 DNE in sample).
>
> I was making pretty good headway with the for-each-group and sort
> constructs, which orders the entries just fine. However, I am unable
> to select the previous node of the newly-ordered nodes. I think the
> preceding-sibling axis on line 14 is looking back to the document
> order and not the newly-ordered nodes. So, I tried to direct my scope
> to the current-group with:
>
> 14 <xsl:variable name="previous"
>
select="$todaysentries/preceding-sibling::outline[position()=$previouspositio
n]"/>
>
> But this selects more than one node. I also attempted a multivalue key
> with @Date and @Stop to no avail. Does this require use of a sequence
> constructor instead of the @use attribute?
>
> Thanks yet again,
> Tim Lebo
>
> Input:
> <?xml version="1.0" encoding="UTF-8"?>
> <opml version="1.0">
> <body>
> <outline text="2010.1.25">
> <outline text="task1" Date="2010.1.25" Start="7:00" Stop="8:00"/>
> <outline text="task2" Date="2010.1.25" Start="8:00" Stop="9:00"/>
> <outline text="skipped 15 minutes since last stop"
> Date="2010.1.25" Start="9:15" Stop="9:30"/>
> <outline text="multiple entries within an hour" Date="2010.1.25"
> Start="9:30" Stop="9:45"/>
> <outline text="multiple entries within an hour out of order"
> Date="2010.1.25" Start="9:50" Stop="10:00"/>
> <outline text="multiple entries within an hour" Date="2010.1.25"
> Start="9:45" Stop="9:50"/>
> <outline text="should be before first entry" Date="2010.1.25"
> Start="6:00" Stop="7:00"/>
> </outline>
> </body>
> </opml>
>
> XSLT 2.0 (Saxon8b):
> 2 <xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
> version="2.0">
> 3 <xsl:output method="text"/>
> 4
> 5 <xsl:template match="/">
> 6 <xsl:for-each-group select="//outline[@Start]" group-by="@Date">
> 7 <xsl:value-of select="concat(current-grouping-key(),$NL)"/>
> 8 <xsl:variable name="todaysentries" select="current-group()"/>
> 9 <xsl:for-each select="current-group()">
> 10 <xsl:sort select="substring-before(@Start,':')"
> data-type="number"/>
> 11 <xsl:sort select="substring-after(@Start,':')"
> data-type="number"/>
> 12 <xsl:if test="position() > 1">
> 13 <xsl:variable name="previousposition" select="position() -
1"/>
> 14 <xsl:variable name="previous"
> select="preceding-sibling::outline[position()=$previousposition]"/>
> 15 <xsl:value-of select="concat(@Date,' prev position
> ',$previousposition,' stopped ',$previous/@Stop,
> 16 ' current entry
> ',@Start,' ',@Stop,$NL)"/>
> 17 </xsl:if>
> 18 </xsl:for-each>
> 19 </xsl:for-each-group>
> 20 </xsl:template>
> 21
> 22 <xsl:variable name="NL">
> 23 <xsl:text>
> 24 </xsl:text>
> 25 </xsl:variable>
> 26
> 27 </xsl:transform>
>
>
> Current Output:
> 2010.1.25
> 2010.1.25 prev position 1 stopped current entry 7:00 8:00
> 2010.1.25 prev position 2 stopped current entry 8:00 9:00
> 2010.1.25 prev position 3 stopped current entry 9:15 9:30
> 2010.1.25 prev position 4 stopped current entry 9:30 9:45
> 2010.1.25 prev position 5 stopped 8:00 current entry 9:45 9:50
> 2010.1.25 prev position 6 stopped current entry 9:50 10:00
>
> Desired Output:
> 2010.1.25
> 2010.1.25 prev position 1 stopped 7:00 current entry 7:00 8:00
> 2010.1.25 prev position 2 stopped 8:00 current entry 8:00 9:00
> 2010.1.25 prev position 3 stopped 9:00 current entry 9:15 9:30
> 2010.1.25 prev position 4 stopped 9:30 current entry 9:30 9:45
> 2010.1.25 prev position 5 stopped 9:45 current entry 9:45 9:50
> 2010.1.25 prev position 6 stopped 9:50 current entry 9:50 10:00
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