Q:

Unable to Run XQuery and Define Datasource with XQuery plugin in PhpStorm? 

I have PhpStorm (built on the IntelliJ platform). 
I've installed the IntelliJ XQuery Support plugin
I would like to be able to:

Define multiple data sources for running your xquery code
Run my main module

These features are apparently possible using IntelliJ IDE
While the plugin installs on PhpStorm, I have been unable to perform these tasks. 
The author does give the disclaimer "... IntelliJ Idea may have some features which others [IntelliJ platform based IDEs] won't." 
Can someone confirm that in fact these features are not available when using the plugin in PhpStorm and in fact I need IntelliJ? 

A:

While I can install and use the plugin in IntelliJ IDEA, when using webstorm I can't run or configure any data source.  So yes I can confirm that they are not available at the moment.