Re: [xsl] key(), generate-id question

["Endre Magyari" <endre@xxxxxxxxx>]

Dear Americo,

Thank you!
One question: Do you rely on the strictly ascending order of the id values?

I will try it now,
Thanks!
Endre
----- Original Message -----
From: "Américo Albuquerque" <aalbuquerque@xxxxxxxxxxxxxxxx>
To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Monday, November 11, 2002 8:39 PM
Subject: RE: [xsl] key(), generate-id question


> Hi Endre.
>
> Ttry this.
>
>  <xsl:template match="page">
>   <xsl:copy>
>   <xsl:apply-templates select="element[@_id] | element[not(@_id)]"/>
>   </xsl:copy>
>  </xsl:template>
>
>  <xsl:template match="element">
>   <element>
>   <xsl:attribute name="xmi.id">
>   <xsl:choose>
>    <xsl:when test="@_id">
>    <xsl:value-of select="@_id"/>
>    </xsl:when>
>    <xsl:otherwise>
>    <xsl:call-template name="generate-id"/>
>    </xsl:otherwise>
>   </xsl:choose>
>   </xsl:attribute>
>   </element>
>  </xsl:template>
>
>  <xsl:template name="generate-id">
>   <xsl:variable name="last"
> select="number(substring-after(preceding-sibling::element[@_id][1]/@_id,
> 'id'))"/>
>   <xsl:variable name="this"
> select="count(preceding-sibling::element[not(@_id)])+1"/>
>   <xsl:variable name="temp" select="concat('00000',$last+$this)"/>
>   <xsl:value-of
> select="concat('id',substring($temp,string-length($temp)-5))"/>
>  </xsl:template>
>
> they work with this xml:
> <page>
>  <element _id="id000001"/>
>  <element _id="id000002"/>
>  <element _id="id000003"/>
>  <element />
>  <element />
> </page>
>
> And produce this:
> <page>
>  <element _id="id000001"/>
>  <element _id="id000002"/>
>  <element _id="id000003"/>
>  <element _id="id000004"/>
>  <element _id="id000005"/>
> </page>
>
> If the structure of your xml is diferent (probably is) then you can
> change the 'element' in the templates by 'node()'
> Hope that this helps you.
>
>
> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Endre
> Magyari
> Sent: Monday, November 11, 2002 7:30 AM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] key(), generate-id question
>
>
> > You can't control how generate-id() works, but you could do something
> > like write a named template that will generate the ID. For example,
> > you could count the number of preceding elements that don't have an
> > _ID attribute and then add that value to the numeric part of the
> > nearest preceding element that *does* have an _ID attribute. All
> > doable with normal XSLT functions.
>
>
> Based on this, as far as now I could do an enumeration of all the _id
> values (as numbers) from the document, but I have no idea how to select
> the one with the maximal value out of them. And Also, I have no idea
> how/where to store the new id values being assigned. The problem is that
> I've no experience with declarative languages. I can not get used to the
> idea that a variable can not vary. What I would do is that (if
> curr_value > max) max = curr_value. But how to do this here? Any help is
> greatly appreciated.
>
> <!-- ID Generator-->
> <xsl:template name="idgen">
>     <xsl:for-each select="node()">
>         <xsl:for-each select="@_id">
>             <xsl:number value="substring-after(current(),'id')"/>;
>         </xsl:for-each>
>     </xsl:for-each>
> </xsl:template>
>
> Thank you,
> Endre
>
>
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>
>
>
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