--- /dev/null
+<!--
+"context" specifies the subset of the requestor context that this match needs to see. It is specified as an xpath expression.
+For this simple match, we just need to look at sfa-input.
+
+"rule" specifies a set of arguments that the match accepts.
+-->
+
+<match name="slice">
+ <!-- Empty context. We _always_ get the hrn of the current user -->
+ <rule element='*'>
+ <context select="//sfa/current/slice@hrn"/>
+ <argument>
+ <name>hrn</name>
+ <help>HRN of the slice requesting resources</help>
+ <operand>HRN</operand>
+ </argument>
+ <processor filename="slice-hrn.xsl"/>
+ </rule>
+</match>