server side scripting for the postgres(psql) is not working?

I tried using the server side scripting code from the link https://datatables.net/examples/data_sources/server_side
this code works only for the mysql, it does not work for postgres database.
Is there any other sample code which supports the postgres database?
ssp.class file which is must for server-side scripting would be much appreciated if someone can share me the one.
Thanks
Koka