Here is an example of a full address and what policy triggers can be used to check against it
http://www.bluecoat.com:81/path.path_path/demo_file.html?sess=1234
http is the scheme (url.scheme)
bluecoat.com is the domain (url.domain)
www.bluecoat.com is the address (url.address)
81 is the port (url.port)
path.path_path/demo_file.html?sess=1234 is the path (url.path)
.html is the extension (url.extension)
sess=1234 is the query (url.query)
http://www.bluecoat.com:81/path.path_path/demo_file.html?sess=1234 is the whole path (url.path)