Hi, On 2017/03/15 16:20, Massimo Fidanza wrote: > Il 15 mar 2017 3:52 AM, "Amit Langote" <langote_amit...@lab.ntt.co.jp> ha > scritto: >> On 2017/03/15 11:08, Massimo Fidanza wrote: >>> Hello, >>> >>> what it means to add a new procedural language such as Go or Rust? >> >> I think you're looking for how to write a "PL function call handler", most >> likely in C. See for example how plpython_call_handler() is defined in >> src/pl/plpython/plpy_main.c. Also read: >> >> https://www.postgresql.org/docs/devel/static/plhandler.html >> >> Beside the call handler, there are couple of other auxiliary functions >> that must be provided viz. validator and inline_handler (again, see >> plpython_validator and plpython_inline_handler). > > But there is a difference between python and Go or Rust that the first is > interpreted and the seconds are compiled like C. All PL instead of C and > Java (also byte code interpreted) are interpreted
I think you might want to take a look at how PL/Java is implemented then: https://github.com/tada/pljava Call handler function I mentioned seems to be implemented in this file: https://github.com/tada/pljava/blob/master/pljava-so/src/main/c/Backend.c Just like writing and deploying C functions, functions written in PL/Java seem to require manual compilation and elaborate installation steps. Thanks, Amit -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
