[xsl] Re: Querying an Active Directory memberOf Attribute

Subject: [xsl] Re: Querying an Active Directory memberOf Attribute
From: yguaba@xxxxxxxxxxxx
Date: Wed, 02 Aug 2006 11:27:32 -0300
On 1 Aug 2006 at 16:48, Cailo wrote:

> My problem is that because memberOf is an array within AD, the query is
> only searching the first 'string' of the array and hence not returning
> correct results. What I would like to do is to either query the entire
> array or join each string within the array to create one long string,
> then query the string. Please see below my script: 
> <xsl:template match="rf:attr[@name='memberOf']">
>   <attr name="GroupID">
>     <value>
>       <xsl:variable name="group" select="*" />
>       <xsl:choose>
>         <xsl:when test="contains($group,'Group_1')">100663298</xsl:when>
>         <xsl:when test="contains($group,'Group_2')">100663299</xsl:when>
>         <xsl:otherwise><xsl:value-of select="100663296" /></xsl:otherwise>
>       </xsl:choose>
>     </value>
>   </attr>
> </xsl:template>

It's not clear to me whether $group is populated with a string or a 
node set. Contains() always verifies the existence of a substring 
within another string; it's not, as Michael Kay pointed out in other 
words, an equivalent of PHP's in_array() or JavaScript's "if (var 
prop in obj)".

> I have done this previously with javascript and it worked fine however I
> am unable to get this to work. Please see below the javascript:
> Dim strGroups
> If IsArray(varProp) Then
>     strGroups = (Join(varProp))
>        If (InStr(strGroups, "CN=Group_1") > 0 ) Then
>              objUser.IsUnprotected = 0
>              objUser.GroupID="Orlando"
>        End If
> End If

I imagine you mean the above is pseudo-code for your actual 
JavaScript. Well, JavaScript is a *very* different animal from XSLT.

Anyway, in the bit of code above it seems that you're checking for 
the existence of "CN=Group_1" within strGroups, which in turn seems 
to be the result of the concatenation of all varProps. This can be 
done in XSLT; perhaps your problem is that you're doing something 
wrong when trying to concatenate all the strings.

As for using a node set as a kind of array and checking for the 
existence of the desired substring in the text value of each node (in 
this case, the equivalent of an array element), you need a mechanism 
to cicle through all the nodes in the node set (all the "elements" in 
the "array"). Otherwise, only the first node will be checked.

To do that, you'll need a recursive template, i.e. a template that 
calls itself until all the nodes in the node set have been checked. 
Here's a very simple example, just so you can understand the idea:


<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="test.xsl"?>
		<elem key="0">apple</elem>
		<elem key="1">banana</elem>
		<elem key="2">cherry</elem>
		<elem key="3">orange</elem>
		<elem key="4">raspberry</elem>
		<elem key="5">watermelon</elem>



<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" 
	<xsl:output method="html" indent="yes" encoding="utf-8"/>

	<xsl:template match="/">
				<xsl:apply-templates select="//search"/>

	<xsl:template match="search">
		<xsl:call-template name="in-array">
			<xsl:with-param name="haystack" select="/root/array/elem"/>
			<xsl:with-param name="needle" select="item"/>

	<xsl:template name="in-array">
		<xsl:param name="haystack"/>
		<xsl:param name="needle"/>
		<xsl:if test="$haystack and $haystack[1]">
			<xsl:if test="$needle = $haystack[1]">
				<p>Match: item <xsl:value-of select="$haystack[1]/@key"/></p>
			<xsl:call-template name="in-array">
				<xsl:with-param name="haystack" select="$haystack[position() &gt; 
				<xsl:with-param name="needle" select="$needle"/>


My apologies if I misunderstood the nature of your problem. And 
although I believe the example above can help you solve your problem, 
it's possible that my preceding considerations are not entirely 
accurate. I'm not Michael Kay! ;o)



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