RE: [xsl] Keeping a map in my XSL

Subject: RE: [xsl] Keeping a map in my XSL
From: "Kevin L. Cobb" <kevin.cobb@xxxxxxxxxxxx>
Date: Tue, 13 Sep 2005 15:40:51 -0400
Heres the thing though. I can't have the map in my source XML, I want it
in my source XSLT.
Is there a way to set the map in an XML document and include it in my
Source XSL and then
Reference it in the XSLT using the key() function?



-----Original Message-----
From: andrew welch [mailto:andrew.j.welch@xxxxxxxxx]
Sent: Tuesday, September 13, 2005 12:02 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] Keeping a map in my XSL

On 9/13/05, Kevin L. Cobb <kevin.cobb@xxxxxxxxxxxx> wrote:
> I want to be able to set a variable that is retreived from my XML I am

> parsing to a mapped values. For example, lets say I have an XML map
> that looks like this:
> <map>
>         <key>12345</key><value>abcde</key>
>         <key>78910</key><value>lmnop</value>
> </map>
> My source XML has the value '12345' in a certain field. I retreive the

> field as usual in XSL and then I want to get the mapped value of this
> field. The map above is "included" in my XSL. Is there a best way to
> do this in XSL?

yes, first restructure your map as associating a key and value by
position is a bad idea, much better to use attributes:

  <key name="12345" value="abcde"/>
  <key name="78910" value="lmnop"/>

then define a key to return a value for a given name:

<xsl:key name="mappings" match="key" use="@name"/>

then in xslt 1.0 use:

<xsl:variable name="lookup" select="the_name_you_want_lookup"/>
<xsl:for-each select="$map">
  <xsl:value-of select="key('mappings', $lookup)/@value"/>

in 2.0 you don't have the hassle of switching the context node because
key() can take it as the third argument:

  <xsl:value-of select="key('mappings', the_name_you_want_to_lookup,


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