Add ability to apply XSLT stylesheets at the datasource level

XML data source contains a varying unknown number of "word" elements inside a "segment" that they wish to convert to a single string on the data source side. XQuery did not meet their needs and trying to do a concat fails due to the unknown number of elements. They would like to be able to apply the stylesheet before querying against the file to be able to retrieve a single paragraph, rather than attempt to piece together an unknown number of elements.