database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-13 07:41:39 +03:00
Code Activity

Add a bunch of pseudo-types to replace the behavior formerly associated

Browse Source 
with OPAQUE, as per recent pghackers discussion.  I still want to do some
more work on the 'cstring' pseudo-type, but I'm going to commit the bulk
of the changes now before the tree starts shifting under me ...
This commit is contained in:
Tom Lane
2002-08-22 00:01:51 +00:00
parent 606c9b9d4f
commit b663f3443b
126 changed files with 2005 additions and 1205 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/tutorial/complex.c
View File

@ -48,14 +48,6 @@ complex_in(char *str)
return result;
}
/*
* You might have noticed a slight inconsistency between the following
* declaration and the SQL definition:
* CREATE FUNCTION complex_out(opaque) RETURNS opaque ...
* The reason is that the argument pass into complex_out is really just a
* pointer. POSTGRES thinks all output functions are:
* char *out_func(char *);
*/
char *
complex_out(Complex * complex)
{
@ -64,8 +56,8 @@ complex_out(Complex * complex)
if (complex == NULL)
return NULL;
result = (char *) palloc(60);
sprintf(result, "(%g,%g)", complex->x, complex->y);
result = (char *) palloc(100);
snprintf(result, 100, "(%g,%g)", complex->x, complex->y);
return result;
}

9
src/tutorial/complex.source
View File

@ -8,7 +8,7 @@
-- Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
-- Portions Copyright (c) 1994, Regents of the University of California
--
-- $Header: /cvsroot/pgsql/src/tutorial/complex.source,v 1.13 2002/07/30 05:24:56 tgl Exp $
-- $Header: /cvsroot/pgsql/src/tutorial/complex.source,v 1.14 2002/08/22 00:01:51 tgl Exp $
--
---------------------------------------------------------------------------
@ -28,7 +28,7 @@
-- (in memory) representation. You will get a message telling you 'complex'
-- does not exist yet but that's okay.
CREATE FUNCTION complex_in(opaque)
CREATE FUNCTION complex_in(cstring)
RETURNS complex
AS '_OBJWD_/complex'
LANGUAGE 'c';
@ -36,8 +36,8 @@ CREATE FUNCTION complex_in(opaque)
-- the output function 'complex_out' takes the internal representation and
-- converts it into the textual representation.
CREATE FUNCTION complex_out(opaque)
RETURNS opaque
CREATE FUNCTION complex_out(complex)
RETURNS cstring
AS '_OBJWD_/complex'
LANGUAGE 'c';
@ -195,4 +195,3 @@ SELECT * from test_complex where a > '(56.0,-22.5)';
-- clean up the example
DROP TABLE test_complex;
DROP TYPE complex CASCADE;
DROP FUNCTION complex_out(opaque);