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oid is needed, it is added at the end of the struct (after the null

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bitmap, if present).

Per Tom Lane's suggestion the information whether a tuple has an oid
or not is carried in the tuple descriptor.  For debugging reasons
tdhasoid is of type char, not bool.  There are predefined values for
WITHOID, WITHOUTOID and UNDEFOID.

This patch has been generated against a cvs snapshot from last week
and I don't expect it to apply cleanly to current sources.  While I
post it here for public review, I'm working on a new version against a
current snapshot.  (There's been heavy activity recently; hope to
catch up some day ...)

This is a long patch;  if it is too hard to swallow, I can provide it
in smaller pieces:

Part 1:  Accessor macros
Part 2:  tdhasoid in TupDesc
Part 3:  Regression test
Part 4:  Parameter withoid to heap_addheader
Part 5:  Eliminate t_oid from HeapTupleHeader

Part 2 is the most hairy part because of changes in the executor and
even in the parser;  the other parts are straightforward.

Up to part 4 the patched postmaster stays binary compatible to
databases created with an unpatched version.  Part 5 is small (100
lines) and finally breaks compatibility.

Manfred Koizar
This commit is contained in:
Bruce Momjian
2002-07-20 05:16:59 +00:00
parent 38dd3ae7d0
commit b0f5086e41
57 changed files with 414 additions and 198 deletions
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13
src/backend/commands/copy.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.159 2002/07/18 04:43:50 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.160 2002/07/20 05:16:57 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -614,9 +614,13 @@ CopyTo(Relation rel, List *attlist, bool binary, bool oids,
/* Send OID if wanted --- note fld_count doesn't include it */
if (oids)
{
Oid oid;
AssertTupleDescHasOid(tupDesc);
oid = HeapTupleGetOid(tuple);
fld_size = sizeof(Oid);
CopySendData(&fld_size, sizeof(int16), fp);
CopySendData(&tuple->t_data->t_oid, sizeof(Oid), fp);
CopySendData(&oid, sizeof(Oid), fp);
}
}
else
@ -624,8 +628,9 @@ CopyTo(Relation rel, List *attlist, bool binary, bool oids,
/* Text format has no per-tuple header, but send OID if wanted */
if (oids)
{
AssertTupleDescHasOid(tupDesc);
string = DatumGetCString(DirectFunctionCall1(oidout,
ObjectIdGetDatum(tuple->t_data->t_oid)));
ObjectIdGetDatum(HeapTupleGetOid(tuple))));
CopySendString(string, fp);
pfree(string);
need_delim = true;
@ -1069,7 +1074,7 @@ CopyFrom(Relation rel, List *attlist, bool binary, bool oids,
tuple = heap_formtuple(tupDesc, values, nulls);
if (oids && file_has_oids)
tuple->t_data->t_oid = loaded_oid;
HeapTupleSetOid(tuple, loaded_oid);
skip_tuple = false;