Emacs - Projectile Ag. Search specific file types

Question

So I am using projectile as project management tool for emacs, and I can do projectile-ag in my emacs to lookup for terms. I however I would like to filter my search by the file extensions, for instance sometimes I would only like to view terms that matched in .java files and in some cases only the terms matched in .hql files. How can I achieve it?

(I can probably do it by grepping the ag buffer's results ofcourse - I am looking for a better way to do this - probably something like file masks in Intellij)

Answer 1

If you would use ag from the command line you could pass --java as a parameter. If you use ag.el you would have to call ag-files and it will ask you about file type, then just type java or hql

Answer 2

Using the universal argument (C-u) before invoking projectile-ag (or some other projectile search commands) will present an args: prompt, at which you can specify an ag option like --java.