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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Grouping while sorting
 I have looked at Jeni's solution, and I would very much like to implement this solution. Unfortunately, I am not good enough with keys yet, and my problem is a little more complicated than my first example. I will try to scetch a more complicated problem, and I hope that someone can show me how to this can be solved. I do not know if one pass is possible in XSLT 1.0....? Again my thanks for anybody who takes the time to look at this. Regards, Ragulf Pickaxe
<!-- Data after first pass in two-pass solution (sorted by @GroupID and @Order) --> <?xml version="1.0"> <Root> <Elem GroupID="A" Type1="1" Type2="0" Order="1">A1</Elem> <Elem GroupID="A" Type1="1" Type2="0" Order="2">A2</Elem> <Elem GroupID="A" Type1="1" Type2="0" Order="5">A5</Elem> <Elem GroupID="A" Type1="1" Type2="0" Order="7">A7</Elem> <Elem GroupID="B" Type1="0" Type2="0" Order="2">B2</Elem> <Elem GroupID="B" Type1="0" Type2="0" Order="3">B3</Elem> <Elem GroupID="B" Type1="0" Type2="0" Order="4">B4</Elem> <Elem GroupID="C" Type1="1" Type1="1" Order="1">C1</Elem> <Elem GroupID="C" Type1="1" Type1="1" Order="4">C4</Elem> <Elem GroupID="D" Type1="0" Type2="1" Order="2">D2</Elem> <Elem GroupID="D" Type1="0" Type2="1" Order="3">D3</Elem> <Elem GroupID="D" Type1="0" Type2="1" Order="4">D4</Elem> </Root>
<xsl:template match="Root"> <!-- The different types of Elem have to be in a certain order - independent of GroupID --> <xsl:apply-templates select="Elem[@Type1=$ChooseWhichType1First]"/> <xsl:apply-templates select="Elem[not(@Type1=$ChooseWhichType1First)][Type2='1']"/> <xsl:apply-templates select="Elem[not(@Type1=$ChooseWhichType1First)][Type2='0']"/> <!-- In the two-pass solution I do not have to sort with the two sorts below: --> <!-- <xsl:sort select="@GroupID"> <xsl:sort select="@Order" data-type="number"> --> <!-- I have an idea that I will need one key for each of the above templates, but I do not know what to write, nor whether my idea is even right (Jeni Tennison's solution provided at buttom of this mail) --> </xsl:template> <xsl:template match="Elem"> <xsl:if test="not(preceding-sibling::Elem/@GroupID=current()/@GroupID)"> <Group><xsl:value-of select="@GroupID"/></Group> </xsl:if> <xsl:value-of select="."/> - </xsl:template> </xsl:stylesheet>
(Summary: I would very much like to get the same output in one go with the unsorted input (the first pass) - if this is possible). Jeni Tennison's solution, which would if there was no @Type1 and @Type2 to consider: <xsl:key name="elems" match="Elem" use="@GroupID" /> <xsl:template match="Root">
<xsl:for-each select="Elem[generate-id(.) =
generate-id(key('elems', @GroupID)[1])]">
<Group><xsl:value-of select="@GroupID" /></Group>
<xsl:for-each select="key('elems', @GroupID)">
<xsl:sort select="@Order" data-type="number" />
<xsl:value-of select="." /> -
</xsl:for-each>
</xsl:for-each>
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