Re: [xsl] Duplicate Elimination

[Ihe Onwuka <ihe.onwuka@xxxxxxxxx>]

Yes that did occur but grouping syntax is not something I retain in
short term memory so am going to try and avoid that...... we'll see.

On Wed, Mar 12, 2014 at 10:09 PM, Wendell Piez <wapiez@xxxxxxxxxxxxxxx> wrote:
> Hi,
>
> I hate to say it, but this is nicely handled as a grouping problem:
>
> <xsl:for-each-group select="(A|B)/Date" group-by=".">
>   <xsl:apply-templates select=".'/> <!-- applies a template to the
> first member of each group -->
>   <!-- select="current-group()[1]" to be more explicit -->
> </xsl:for-each-group>
>
> Many grouping problems are hidden in plain sight. :-)
>
> Cheers, Wendell
>
>
>
> On Wed, Mar 12, 2014 at 5:14 PM, Martin Holmes <mholmes@xxxxxxx> wrote:
>> If the text content of the element is all you care about, you could do
>> something like this:
>>
>> <xsl:variable name="distinctDates">
>> <xsl:for-each select="distinct-values(A/Date | B/Date)">
>>         <xsl:sort/>
>>         <Date><xsl:value-of select="."/></Date>
>> </xsl:for-each>
>> </xsl:variable>
>>
>> <xsl:apply-templates select="$distinctDates/Date"/>
>>
>>
>>
>>
>> On 14-03-12 01:34 PM, Ihe Onwuka wrote:
>>>
>>> I have Date elements coming from 2 different parents.
>>>
>>> <A>
>>>    <Date>blah</Date>
>>> </A>
>>>
>>> <B>
>>>      <Date>blah</Date>
>>> </B>
>>>
>>> I am doing
>>>
>>> <xsl:apply-templates select="A/Date | B/Date>
>>>     <xsl:sort select="." order="ascending"/>
>>> </xsl:apply-templates>
>>>
>>> and
>>>
>>> <xsl:template match="Date">
>>>   etc
>>> </xsl:template>
>>>
>>> I have noticed that when A and B have a child element of the same date
>>> the Date template gets fired on each occasion, whereas I only want it
>>> fired once
>>>
>>> I  thought the union operator in the apply-templates would have the
>>> effect of  eliminating duplicates or aren't they duplicates if they
>>> have the same content but come from different parents.
>>
>
>
>
> --
> Wendell Piez | http://www.wendellpiez.com
> XML | XSLT | electronic publishing
> Eat Your Vegetables
> _____oo_________o_o___ooooo____ooooooo_^