database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-27 23:21:58 +03:00
Code Activity

Support type modifiers for user-defined types, and pull most knowledge

Browse Source 
about typmod representation for standard types out into type-specific
typmod I/O functions.  Teodor Sigaev, with some editorialization by
Tom Lane.
This commit is contained in:
Tom Lane
2006-12-30 21:21:56 +00:00
parent 24b1f14eae
commit 5725b9d9af
47 changed files with 1628 additions and 685 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
src/backend/utils/adt/numeric.c
View File

@ -14,7 +14,7 @@
* Copyright (c) 1998-2006, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/numeric.c,v 1.96 2006/10/04 00:29:59 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/numeric.c,v 1.97 2006/12/30 21:21:54 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -470,7 +470,7 @@ numeric_send(PG_FUNCTION_ARGS)
* scale of the attribute have to be applied on the value.
*/
Datum
numeric (PG_FUNCTION_ARGS)
numeric(PG_FUNCTION_ARGS)
{
Numeric num = PG_GETARG_NUMERIC(0);
int32 typmod = PG_GETARG_INT32(1);
@ -537,6 +537,67 @@ numeric (PG_FUNCTION_ARGS)
PG_RETURN_NUMERIC(new);
}
Datum
numerictypmodin(PG_FUNCTION_ARGS)
{
ArrayType *ta = PG_GETARG_ARRAYTYPE_P(0);
int32 *tl;
int n;
int32 typmod;
tl = ArrayGetTypmods(ta, &n);
if (n == 2)
{
if (tl[0] < 1 || tl[0] > NUMERIC_MAX_PRECISION)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("NUMERIC precision %d must be between 1 and %d",
tl[0], NUMERIC_MAX_PRECISION)));
if (tl[1] < 0 || tl[1] > tl[0])
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("NUMERIC scale %d must be between 0 and precision %d",
tl[1], tl[0])));
typmod = ((tl[0] << 16) | tl[1]) + VARHDRSZ;
}
else if (n == 1)
{
if (tl[0] < 1 || tl[0] > NUMERIC_MAX_PRECISION)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("NUMERIC precision %d must be between 1 and %d",
tl[0], NUMERIC_MAX_PRECISION)));
/* scale defaults to zero */
typmod = (tl[0] << 16) + VARHDRSZ;
}
else
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid NUMERIC type modifier")));
typmod = 0; /* keep compiler quiet */
}
PG_RETURN_INT32(typmod);
}
Datum
numerictypmodout(PG_FUNCTION_ARGS)
{
int32 typmod = PG_GETARG_INT32(0);
char *res = (char *) palloc(64);
if (typmod >= 0)
snprintf(res, 64, "(%d,%d)",
((typmod - VARHDRSZ) >> 16) & 0xffff,
(typmod - VARHDRSZ) & 0xffff);
else
*res = '\0';
PG_RETURN_CSTRING(res);
}
/* ----------------------------------------------------------------------
*