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Clean up comments to be careful about the distinction between variable-

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width types and varlena types, since with the introduction of CSTRING as
a more-or-less-real type, these concepts aren't identical.  I've tried to
use varlena consistently to denote datatypes with typlen = -1, ie, they
have a length word and are potentially TOASTable; while the term variable
width covers both varlena and cstring (and, perhaps, someday other types
with other rules for computing the actual width).  No code changes in this
commit except for renaming a couple macros.
This commit is contained in:
Tom Lane
2002-08-25 17:20:01 +00:00
parent d46172e4fa
commit 58de480999
11 changed files with 66 additions and 68 deletions
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7
src/include/access/htup.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: htup.h,v 1.57 2002/07/20 05:16:59 momjian Exp $
* $Id: htup.h,v 1.58 2002/08/25 17:20:01 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -95,8 +95,7 @@ typedef HeapTupleHeaderData *HeapTupleHeader;
* information stored in t_infomask:
*/
#define HEAP_HASNULL 0x0001 /* has null attribute(s) */
#define HEAP_HASVARLENA 0x0002 /* has variable length
* attribute(s) */
#define HEAP_HASVARWIDTH 0x0002 /* has variable-width attribute(s) */
#define HEAP_HASEXTERNAL 0x0004 /* has external stored
* attribute(s) */
#define HEAP_HASCOMPRESSED 0x0008 /* has compressed stored
@@ -425,7 +424,7 @@ typedef HeapTupleData *HeapTuple;
(!(((HeapTuple) (tuple))->t_data->t_infomask & HEAP_HASNULL))
#define HeapTupleAllFixed(tuple) \
(!(((HeapTuple) (tuple))->t_data->t_infomask & HEAP_HASVARLENA))
(!(((HeapTuple) (tuple))->t_data->t_infomask & HEAP_HASVARWIDTH))
#define HeapTupleHasExternal(tuple) \
((((HeapTuple)(tuple))->t_data->t_infomask & HEAP_HASEXTERNAL) != 0)