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Andrew McMillan 2008-11-06 22:45:47 +13:00
parent 3cbdec7e03
commit 964918c19b
1 changed files with 13 additions and 1 deletions
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14
dba/rrule_functions.sql
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@ -308,6 +308,10 @@ $$ LANGUAGE 'plpgsql' IMMUTABLE;
------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------
-- Given a cursor into a set, process the set returning the subset matching the BYSETPOS -- Given a cursor into a set, process the set returning the subset matching the BYSETPOS
--
-- Note that this function *requires* PostgreSQL 8.3 or later for the cursor handling syntax
-- to work. I guess we could do it with an array, instead, for compatibility with earlier
-- releases, since there's a maximum of 366 positions in a set.
------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------
CREATE or REPLACE FUNCTION rrule_bysetpos_filter( REFCURSOR, INT[] ) RETURNS SETOF TIMESTAMP WITH TIME ZONE AS $$ CREATE or REPLACE FUNCTION rrule_bysetpos_filter( REFCURSOR, INT[] ) RETURNS SETOF TIMESTAMP WITH TIME ZONE AS $$
DECLARE DECLARE
@ -343,7 +347,11 @@ $$ LANGUAGE 'plpgsql' IMMUTABLE;
------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------
-- Return another day's worth of events -- Return another day's worth of events: i.e. one day that matches the criteria, since we don't
-- currently implement sub-day scheduling.
--
-- This is cheeky: The incrementing by a day is done outside the call, so we either return the
-- empty set (if the input date fails our filters) or we return a set containing the input date.
------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------
CREATE or REPLACE FUNCTION daily_set( TIMESTAMP WITH TIME ZONE, rrule_parts ) RETURNS SETOF TIMESTAMP WITH TIME ZONE AS $$ CREATE or REPLACE FUNCTION daily_set( TIMESTAMP WITH TIME ZONE, rrule_parts ) RETURNS SETOF TIMESTAMP WITH TIME ZONE AS $$
DECLARE DECLARE
@ -380,6 +388,9 @@ $$ LANGUAGE 'plpgsql' IMMUTABLE STRICT;
------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------
-- Return another week's worth of events -- Return another week's worth of events
--
-- Doesn't handle truly obscure and unlikely stuff like BYWEEKNO=5;BYMONTH=1;BYDAY=WE,TH,FR;BYSETPOS=-2
-- Imagine that.
------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------
CREATE or REPLACE FUNCTION weekly_set( TIMESTAMP WITH TIME ZONE, rrule_parts ) RETURNS SETOF TIMESTAMP WITH TIME ZONE AS $$ CREATE or REPLACE FUNCTION weekly_set( TIMESTAMP WITH TIME ZONE, rrule_parts ) RETURNS SETOF TIMESTAMP WITH TIME ZONE AS $$
DECLARE DECLARE
@ -473,6 +484,7 @@ BEGIN
-- We don't yet implement byweekno, byblah -- We don't yet implement byweekno, byblah
RETURN NEXT after; RETURN NEXT after;
END IF; END IF;
END; END;
$$ LANGUAGE 'plpgsql' IMMUTABLE STRICT; $$ LANGUAGE 'plpgsql' IMMUTABLE STRICT;