Thread: Newbie hacker looking to get started
I was thinking of hacking on postgres a bit. I want to start with filling out the operations list for data types that seem to be missing obvious operators. In particular I'm thinking of things like . an aggregate function for cidr that would find the smallest enclosing netblock. . an aggregate function for box, point, etc for the bounding box I had some other ideas but I don't remember them now. Anyways, I'm a bit stumped where to start. Looking at the existing operations there seems to be a bit of magic using macros involved in creating accumulators and result sets that I don't get. Is there a walk-through of a typical datatype and how to code an operator somewhere? -- greg
How about: http://www3.us.postgresql.org/users-lounge/docs/7.2/postgres/xoper.html and http://www3.us.postgresql.org/users-lounge/docs/7.2/postgres/xaggr.html Doesn't seem to have actual examples in C tho. Chris ----- Original Message ----- From: "Greg Stark" <gsstark@mit.edu> To: <pgsql-hackers@postgresql.org> Sent: Saturday, November 30, 2002 2:41 PM Subject: [HACKERS] Newbie hacker looking to get started > > I was thinking of hacking on postgres a bit. I want to start with filling out > the operations list for data types that seem to be missing obvious operators. > > In particular I'm thinking of things like > > . an aggregate function for cidr that would find the smallest enclosing netblock. > . an aggregate function for box, point, etc for the bounding box > > I had some other ideas but I don't remember them now. > > Anyways, I'm a bit stumped where to start. Looking at the existing operations > there seems to be a bit of magic using macros involved in creating > accumulators and result sets that I don't get. > > Is there a walk-through of a typical datatype and how to code an operator > somewhere? > > -- > greg > > > ---------------------------(end of broadcast)--------------------------- > TIP 3: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to majordomo@postgresql.org so that your > message can get through to the mailing list cleanly >