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Add support for user-defined I/O conversion casts.

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This commit is contained in:
Heikki Linnakangas
2008-10-31 08:39:22 +00:00
parent 34e37d58ed
commit 092bc49653
14 changed files with 396 additions and 269 deletions
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51
src/bin/pg_dump/pg_dump.c
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@@ -12,7 +12,7 @@
* by PostgreSQL
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.502 2008/09/24 19:33:15 heikki Exp $
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.503 2008/10/31 08:39:21 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@@ -36,6 +36,7 @@ int optreset;
#include "access/attnum.h"
#include "access/sysattr.h"
#include "catalog/pg_cast.h"
#include "catalog/pg_class.h"
#include "catalog/pg_proc.h"
#include "catalog/pg_trigger.h"
@@ -4410,21 +4411,31 @@ getCasts(int *numCasts)
int i_casttarget;
int i_castfunc;
int i_castcontext;
int i_castmethod;
/* Make sure we are in proper schema */
selectSourceSchema("pg_catalog");
if (g_fout->remoteVersion >= 70300)
if (g_fout->remoteVersion >= 80400)
{
appendPQExpBuffer(query, "SELECT tableoid, oid, "
"castsource, casttarget, castfunc, castcontext "
"castsource, casttarget, castfunc, castcontext, "
"castmethod "
"FROM pg_cast ORDER BY 3,4");
}
else if (g_fout->remoteVersion >= 70300)
{
appendPQExpBuffer(query, "SELECT tableoid, oid, "
"castsource, casttarget, castfunc, castcontext, "
"CASE WHEN castfunc = 0 THEN 'b' ELSE 'f' END AS castmethod "
"FROM pg_cast ORDER BY 3,4");
}
else
{
appendPQExpBuffer(query, "SELECT 0 as tableoid, p.oid, "
"t1.oid as castsource, t2.oid as casttarget, "
"p.oid as castfunc, 'e' as castcontext "
"p.oid as castfunc, 'e' as castcontext, "
"'f' as castmethod "
"FROM pg_type t1, pg_type t2, pg_proc p "
"WHERE p.pronargs = 1 AND "
"p.proargtypes[0] = t1.oid AND "
@@ -4447,6 +4458,7 @@ getCasts(int *numCasts)
i_casttarget = PQfnumber(res, "casttarget");
i_castfunc = PQfnumber(res, "castfunc");
i_castcontext = PQfnumber(res, "castcontext");
i_castmethod = PQfnumber(res, "castmethod");
for (i = 0; i < ntups; i++)
{
@@ -4462,6 +4474,7 @@ getCasts(int *numCasts)
castinfo[i].casttarget = atooid(PQgetvalue(res, i, i_casttarget));
castinfo[i].castfunc = atooid(PQgetvalue(res, i, i_castfunc));
castinfo[i].castcontext = *(PQgetvalue(res, i, i_castcontext));
castinfo[i].castmethod = *(PQgetvalue(res, i, i_castmethod));
/*
* Try to name cast as concatenation of typnames. This is only used
@@ -7188,18 +7201,26 @@ dumpCast(Archive *fout, CastInfo *cast)
getFormattedTypeName(cast->castsource, zeroAsNone),
getFormattedTypeName(cast->casttarget, zeroAsNone));
if (!OidIsValid(cast->castfunc))
appendPQExpBuffer(defqry, "WITHOUT FUNCTION");
else
switch(cast->castmethod)
{
/*
* Always qualify the function name, in case it is not in pg_catalog
* schema (format_function_signature won't qualify it).
*/
appendPQExpBuffer(defqry, "WITH FUNCTION %s.",
fmtId(funcInfo->dobj.namespace->dobj.name));
appendPQExpBuffer(defqry, "%s",
format_function_signature(funcInfo, true));
case COERCION_METHOD_BINARY:
appendPQExpBuffer(defqry, "WITHOUT FUNCTION");
break;
case COERCION_METHOD_INOUT:
appendPQExpBuffer(defqry, "WITH INOUT");
break;
case COERCION_METHOD_FUNCTION:
/*
* Always qualify the function name, in case it is not in
* pg_catalog schema (format_function_signature won't qualify it).
*/
appendPQExpBuffer(defqry, "WITH FUNCTION %s.",
fmtId(funcInfo->dobj.namespace->dobj.name));
appendPQExpBuffer(defqry, "%s",
format_function_signature(funcInfo, true));
break;
default:
write_msg(NULL, "WARNING: bogus value in pg_cast.castmethod field\n");
}
if (cast->castcontext == 'a')