Re: [xsl] Find elements with same key and merge sub-elements

["Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

On 26.09.2023 21:34, Larry Hayashi lhtrees@xxxxxxxxx wrote:
> Hi,
>
> I have an xml file containing dictionary entries with their
> meanings/senses. I'd like to find Entries that have 2 or more senses
> that have the same gloss. Sometimes an entry will have more than one
> sense but each sense will have its own unique gloss. For the entries
> that have senses with identical glosses, I want to merge those senses
> and their contents as shown below.
>
> Input
> <Root>
> B  B  <Entry form="voiture">
> B  B  B  B  <Sense num="1">
> B  B  B  B  B  B  <Gloss>car</Gloss>
> B  B  B  B  B  B  <Index>
> B  B  B  B  B  B  B  B  <IndexItem>automobile</IndexItem>
> B  B  B  B  B  B  B  B  <IndexItem>vehicle</IndexItem>
> B  B  B  B  B  B  B  B  <IndexItem>car</IndexItem>
> B  B  B  B  B  B  </Index>
> B  B  B  B  </Sense>
> B  B  B  B  <Sense num="2">
> B  B  B  B  B  B  <Gloss>car</Gloss>
> B  B  B  B  B  B  <Category>transportation</Category>
> B  B  B  B  </Sense>
> B  B  </Entry>
> B  B  <Entry>
> B  B  B  B  <!-- ...Etc.... -->
> B  B  </Entry>
> </Root>
>
> Desired Output:
> <Root>
> B  B  <Entry form="voiture">
> B  B  B  B  <Sense num="1">
> B  B  B  B  B  B  <Gloss>car</Gloss>
> B  B  B  B  B  B  <Index>
> B  B  B  B  B  B  B  B  <IndexItem>automobile</IndexItem>
> B  B  B  B  B  B  B  B  <IndexItem>vehicle</IndexItem>
> B  B  B  B  B  B  B  B  <IndexItem>car</IndexItem>
> B  B  B  B  B  B  </Index>
> B  B  B  B  B  B  <Category>transportation</Category>
> B  B  B  B  </Sense>
> B  B  </Entry>
> B  B  <Entry>
> B  B  B  B  <!-- ...Etc.... -->
> B  B  </Entry>
> </Root>
>
> Thanks in advance for any pointers as to what might be the most
> efficient approach.

It looks like a grouping problem so in XSLT 3 you can do something like
the following (it is not quite clear whether common elements of a group
of Entry elements with the same Gloss need to simply copied or also
somehow merged)


<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
B B  B xmlns:xs="http://www.w3.org/2001/XMLSchema";
B B  B exclude-result-prefixes="#all"
B B  B version="3.0">

B  <xsl:mode on-no-match="shallow-copy"/>

B  <xsl:output method="xml" indent="yes"/>

B  <xsl:template match="Entry">
B B B  <xsl:copy>
B B B B B  <xsl:apply-templates select="@*"/>
B B B B B  <xsl:for-each-group select="Sense" group-by="Gloss">
B B B B B B B  <xsl:copy>
B B B B B B B B B  <xsl:apply-templates select="@*, Gloss,
current-group()/(*
except Gloss)"/>
B B B B B B B  </xsl:copy>
B B B B B  </xsl:for-each-group>
B B B  </xsl:copy>
B  </xsl:template>

</xsl:stylesheet>