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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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14
src/backend/access/common/heaptuple.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.79 2002/08/24 15:00:45 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.80 2002/08/25 17:20:00 tgl Exp $
*
* NOTES
* The old interface functions have been converted to macros
@ -116,7 +116,7 @@ DataFill(char *data,
else if (att[i]->attlen == -1)
{
/* varlena */
*infomask |= HEAP_HASVARLENA;
*infomask |= HEAP_HASVARWIDTH;
if (VARATT_IS_EXTERNAL(value[i]))
*infomask |= HEAP_HASEXTERNAL;
if (VARATT_IS_COMPRESSED(value[i]))
@ -127,7 +127,7 @@ DataFill(char *data,
else if (att[i]->attlen == -2)
{
/* cstring */
*infomask |= HEAP_HASVARLENA;
*infomask |= HEAP_HASVARWIDTH;
data_length = strlen(DatumGetCString(value[i])) + 1;
memcpy(data, DatumGetPointer(value[i]), data_length);
}
@ -230,9 +230,9 @@ nocachegetattr(HeapTuple tuple,
/* ----------------
* Three cases:
*
* 1: No nulls and no variable length attributes.
* 2: Has a null or a varlena AFTER att.
* 3: Has nulls or varlenas BEFORE att.
* 1: No nulls and no variable-width attributes.
* 2: Has a null or a var-width AFTER att.
* 3: Has nulls or var-widths BEFORE att.
* ----------------
*/
@ -326,7 +326,7 @@ nocachegetattr(HeapTuple tuple,
/*
* If slow is false, and we got here, we know that we have a tuple
* with no nulls or varlenas before the target attribute. If possible,
* with no nulls or var-widths before the target attribute. If possible,
* we also want to initialize the remainder of the attribute cached
* offset values.
*/