This page appears in the XQuery/XSLT Expression Editor only.
In the message flow of a proxy service, you can assign XQuery expressions to message context variables, assign if-then-else actions based on the Boolean result of an XQuery expression, insert the result of an XQuery expression at an identified place relative to an XPath expression, specify the message context that you want to log through XQuery expressions on context variables, and so on.
Use the XQuery Resource page to configure an XQuery transformation to be executed in the message flow of a proxy service.