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Inlined heap_getattr().

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This commit is contained in:
Bruce Momjian
1997-08-26 23:31:58 +00:00
parent 20afa04d03
commit 75c6c2b608
9 changed files with 48 additions and 104 deletions
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65
src/backend/access/common/heaptuple.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.20 1997/08/24 23:07:26 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/common/heaptuple.c,v 1.21 1997/08/26 23:31:20 momjian Exp $
*
* NOTES
* The old interface functions have been converted to macros
@ -39,8 +39,6 @@
#define register
#endif /* !NO_ASSERT_CHECKING && sparc && sunos4 */
static char *heap_getsysattr(HeapTuple tup, Buffer b, int attnum);
/* ----------------------------------------------------------------
* misc support routines
* ----------------------------------------------------------------
@ -337,7 +335,7 @@ heap_sysattrbyval(AttrNumber attno)
* heap_getsysattr
* ----------------
*/
static char *
char *
heap_getsysattr(HeapTuple tup, Buffer b, int attnum)
{
switch (attnum) {
@ -423,7 +421,6 @@ fastgetattr(HeapTuple tup,
* ----------------
*/
Assert(PointerIsValid(isnull));
Assert(attnum > 0);
/* ----------------
@ -435,7 +432,8 @@ fastgetattr(HeapTuple tup,
* ----------------
*/
*isnull = false;
if (isnull)
*isnull = false;
if (HeapTupleNoNulls(tup)) {
attnum--;
@ -469,7 +467,8 @@ fastgetattr(HeapTuple tup,
*/
if (att_isnull(attnum, bp)) {
*isnull = true;
if (isnull)
*isnull = true;
return NULL;
}
@ -659,58 +658,6 @@ fastgetattr(HeapTuple tup,
}
}
/* ----------------
* heap_getattr
*
* Find a particular field in a row represented as a heap tuple.
* We return a pointer into that heap tuple, which points to the
* first byte of the value of the field in question.
*
* If the field in question has a NULL value, we return a null
* pointer and return <*isnull> == true. Otherwise, we return
* <*isnull> == false.
*
* <tup> is the pointer to the heap tuple. <attnum> is the attribute
* number of the column (field) caller wants. <tupleDesc> is a
* pointer to the structure describing the row and all its fields.
* ---------------- */
char *
heap_getattr(HeapTuple tup,
Buffer b,
int attnum,
TupleDesc tupleDesc,
bool *isnull)
{
bool localIsNull;
/* ----------------
* sanity checks
* ----------------
*/
Assert(tup != NULL);
if (! PointerIsValid(isnull))
isnull = &localIsNull;
if (attnum > (int) tup->t_natts) {
*isnull = true;
return ((char *) NULL);
} else if (attnum > 0) {
/* ----------------
* take care of user defined attributes
* ----------------
*/
return fastgetattr(tup, attnum, tupleDesc, isnull);
} else {
/* ----------------
* take care of system attributes
* ----------------
*/
*isnull = false;
return heap_getsysattr(tup, b, attnum);
}
}
/* ----------------
* heap_copytuple
*