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Allow PL/Python functions to return void, per gripe from James Robinson

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(I didn't use his patch, however). A void-returning PL/Python function
must return None (from Python), which is translated into a void datum
(and *not* NULL) for Postgres. I also added some regression tests for
this functionality.
This commit is contained in:
Neil Conway
2006-02-28 20:03:52 +00:00
parent c6b6f7ad64
commit 87daae1143
5 changed files with 72 additions and 7 deletions
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15
src/pl/plpython/sql/plpython_function.sql
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@ -341,3 +341,18 @@ plan = plpy.prepare("SELECT $1 AS testvalue1, $2 AS testvalue2", ["text", "text"
rv = plpy.execute(plan, u"\\x80", 1)
return rv[0]["testvalue1"]
' LANGUAGE plpythonu;
-- Tests for functions that return void
CREATE FUNCTION test_void_func1() RETURNS void AS $$
x = 10
$$ LANGUAGE plpythonu;
-- illegal: can't return non-None value in void-returning func
CREATE FUNCTION test_void_func2() RETURNS void AS $$
return 10
$$ LANGUAGE plpythonu;
CREATE FUNCTION test_return_none() RETURNS int AS $$
None
$$ LANGUAGE plpythonu;