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Clean up some variable names in ri_triggers.c 

There was a mix of old_slot/oldslot, new_slot/newslot.  Since we've
changed everything from row to slot, we might as well take this
opportunity to clean this up.

Also update some more comments for the slot change.
This commit is contained in:
Peter Eisentraut 2019-02-28 15:29:00 +01:00
parent 554ebf6878
commit 0a271df705
1 changed files with 35 additions and 35 deletions
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70
src/backend/utils/adt/ri_triggers.c
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@ -454,10 +454,10 @@ RI_FKey_check_upd(PG_FUNCTION_ARGS)
* ri_Check_Pk_Match
*
* Check to see if another PK row has been created that provides the same
* key values as the "old_row" that's been modified or deleted in our trigger
* key values as the "oldslot" that's been modified or deleted in our trigger
* event. Returns true if a match is found in the PK table.
*
* We assume the caller checked that the old_row contains no NULL key values,
* We assume the caller checked that the oldslot contains no NULL key values,
* since otherwise a match is impossible.
*/
static bool
@ -625,7 +625,7 @@ ri_restrict(TriggerData *trigdata, bool is_no_action)
const RI_ConstraintInfo *riinfo;
Relation fk_rel;
Relation pk_rel;
TupleTableSlot *old_slot;
TupleTableSlot *oldslot;
RI_QueryKey qkey;
SPIPlanPtr qplan;
@ -640,7 +640,7 @@ ri_restrict(TriggerData *trigdata, bool is_no_action)
*/
fk_rel = table_open(riinfo->fk_relid, RowShareLock);
pk_rel = trigdata->tg_relation;
old_slot = trigdata->tg_trigslot;
oldslot = trigdata->tg_trigslot;
/*
* If another PK row now exists providing the old key values, we
@ -649,7 +649,7 @@ ri_restrict(TriggerData *trigdata, bool is_no_action)
* allow another row to be substituted.
*/
if (is_no_action &&
ri_Check_Pk_Match(pk_rel, fk_rel, old_slot, riinfo))
ri_Check_Pk_Match(pk_rel, fk_rel, oldslot, riinfo))
{
table_close(fk_rel, RowShareLock);
return PointerGetDatum(NULL);
@ -716,7 +716,7 @@ ri_restrict(TriggerData *trigdata, bool is_no_action)
*/
ri_PerformCheck(riinfo, &qkey, qplan,
fk_rel, pk_rel,
old_slot, NULL,
oldslot, NULL,
true, /* must detect new rows */
SPI_OK_SELECT);
@ -741,7 +741,7 @@ RI_FKey_cascade_del(PG_FUNCTION_ARGS)
const RI_ConstraintInfo *riinfo;
Relation fk_rel;
Relation pk_rel;
TupleTableSlot *old_slot;
TupleTableSlot *oldslot;
RI_QueryKey qkey;
SPIPlanPtr qplan;
@ -759,7 +759,7 @@ RI_FKey_cascade_del(PG_FUNCTION_ARGS)
*/
fk_rel = table_open(riinfo->fk_relid, RowExclusiveLock);
pk_rel = trigdata->tg_relation;
old_slot = trigdata->tg_trigslot;
oldslot = trigdata->tg_trigslot;
if (SPI_connect() != SPI_OK_CONNECT)
elog(ERROR, "SPI_connect failed");
@ -818,7 +818,7 @@ RI_FKey_cascade_del(PG_FUNCTION_ARGS)
*/
ri_PerformCheck(riinfo, &qkey, qplan,
fk_rel, pk_rel,
old_slot, NULL,
oldslot, NULL,
true, /* must detect new rows */
SPI_OK_DELETE);
@ -843,8 +843,8 @@ RI_FKey_cascade_upd(PG_FUNCTION_ARGS)
const RI_ConstraintInfo *riinfo;
Relation fk_rel;
Relation pk_rel;
TupleTableSlot *new_slot;
TupleTableSlot *old_slot;
TupleTableSlot *newslot;
TupleTableSlot *oldslot;
RI_QueryKey qkey;
SPIPlanPtr qplan;
@ -863,8 +863,8 @@ RI_FKey_cascade_upd(PG_FUNCTION_ARGS)
*/
fk_rel = table_open(riinfo->fk_relid, RowExclusiveLock);
pk_rel = trigdata->tg_relation;
new_slot = trigdata->tg_newslot;
old_slot = trigdata->tg_trigslot;
newslot = trigdata->tg_newslot;
oldslot = trigdata->tg_trigslot;
if (SPI_connect() != SPI_OK_CONNECT)
elog(ERROR, "SPI_connect failed");
@ -935,7 +935,7 @@ RI_FKey_cascade_upd(PG_FUNCTION_ARGS)
*/
ri_PerformCheck(riinfo, &qkey, qplan,
fk_rel, pk_rel,
old_slot, new_slot,
oldslot, newslot,
true, /* must detect new rows */
SPI_OK_UPDATE);
@ -989,7 +989,7 @@ ri_setnull(TriggerData *trigdata)
const RI_ConstraintInfo *riinfo;
Relation fk_rel;
Relation pk_rel;
TupleTableSlot *old_slot;
TupleTableSlot *oldslot;
RI_QueryKey qkey;
SPIPlanPtr qplan;
@ -1004,7 +1004,7 @@ ri_setnull(TriggerData *trigdata)
*/
fk_rel = table_open(riinfo->fk_relid, RowExclusiveLock);
pk_rel = trigdata->tg_relation;
old_slot = trigdata->tg_trigslot;
oldslot = trigdata->tg_trigslot;
if (SPI_connect() != SPI_OK_CONNECT)
elog(ERROR, "SPI_connect failed");
@ -1075,7 +1075,7 @@ ri_setnull(TriggerData *trigdata)
*/
ri_PerformCheck(riinfo, &qkey, qplan,
fk_rel, pk_rel,
old_slot, NULL,
oldslot, NULL,
true, /* must detect new rows */
SPI_OK_UPDATE);
@ -1129,7 +1129,7 @@ ri_setdefault(TriggerData *trigdata)
const RI_ConstraintInfo *riinfo;
Relation fk_rel;
Relation pk_rel;
TupleTableSlot *old_slot;
TupleTableSlot *oldslot;
RI_QueryKey qkey;
SPIPlanPtr qplan;
@ -1144,7 +1144,7 @@ ri_setdefault(TriggerData *trigdata)
*/
fk_rel = table_open(riinfo->fk_relid, RowExclusiveLock);
pk_rel = trigdata->tg_relation;
old_slot = trigdata->tg_trigslot;
oldslot = trigdata->tg_trigslot;
if (SPI_connect() != SPI_OK_CONNECT)
elog(ERROR, "SPI_connect failed");
@ -1215,7 +1215,7 @@ ri_setdefault(TriggerData *trigdata)
*/
ri_PerformCheck(riinfo, &qkey, qplan,
fk_rel, pk_rel,
old_slot, NULL,
oldslot, NULL,
true, /* must detect new rows */
SPI_OK_UPDATE);
@ -1251,11 +1251,11 @@ ri_setdefault(TriggerData *trigdata)
* trigger must be fired, false if we can prove the constraint will still
* be satisfied.
*
* new_slot will be NULL if this is called for a delete.
* newslot will be NULL if this is called for a delete.
*/
bool
RI_FKey_pk_upd_check_required(Trigger *trigger, Relation pk_rel,
TupleTableSlot *old_slot, TupleTableSlot *new_slot)
TupleTableSlot *oldslot, TupleTableSlot *newslot)
{
const RI_ConstraintInfo *riinfo;
@ -1265,11 +1265,11 @@ RI_FKey_pk_upd_check_required(Trigger *trigger, Relation pk_rel,
* If any old key value is NULL, the row could not have been
* referenced by an FK row, so no check is needed.
*/
if (ri_NullCheck(RelationGetDescr(pk_rel), old_slot, riinfo, true) != RI_KEYS_NONE_NULL)
if (ri_NullCheck(RelationGetDescr(pk_rel), oldslot, riinfo, true) != RI_KEYS_NONE_NULL)
return false;
/* If all old and new key values are equal, no check is needed */
if (new_slot && ri_KeysEqual(pk_rel, old_slot, new_slot, riinfo, true))
if (newslot && ri_KeysEqual(pk_rel, oldslot, newslot, riinfo, true))
return false;
/* Else we need to fire the trigger. */
@ -1287,7 +1287,7 @@ RI_FKey_pk_upd_check_required(Trigger *trigger, Relation pk_rel,
*/
bool
RI_FKey_fk_upd_check_required(Trigger *trigger, Relation fk_rel,
TupleTableSlot *old_slot, TupleTableSlot *new_slot)
TupleTableSlot *oldslot, TupleTableSlot *newslot)
{
const RI_ConstraintInfo *riinfo;
int ri_nullcheck;
@ -1297,7 +1297,7 @@ RI_FKey_fk_upd_check_required(Trigger *trigger, Relation fk_rel,
riinfo = ri_FetchConstraintInfo(trigger, fk_rel, false);
ri_nullcheck = ri_NullCheck(RelationGetDescr(fk_rel), new_slot, riinfo, false);
ri_nullcheck = ri_NullCheck(RelationGetDescr(fk_rel), newslot, riinfo, false);
/*
* If all new key values are NULL, the row satisfies the constraint, so no
@ -1350,14 +1350,14 @@ RI_FKey_fk_upd_check_required(Trigger *trigger, Relation fk_rel,
* UPDATE check. (We could skip this if we knew the INSERT
* trigger already fired, but there is no easy way to know that.)
*/
xminDatum = slot_getsysattr(old_slot, MinTransactionIdAttributeNumber, &isnull);
xminDatum = slot_getsysattr(oldslot, MinTransactionIdAttributeNumber, &isnull);
Assert(!isnull);
xmin = DatumGetTransactionId(xminDatum);
if (TransactionIdIsCurrentTransactionId(xmin))
return true;
/* If all old and new key values are equal, no check is needed */
if (ri_KeysEqual(fk_rel, old_slot, new_slot, riinfo, false))
if (ri_KeysEqual(fk_rel, oldslot, newslot, riinfo, false))
return false;
/* Else we need to fire the trigger. */
@ -2047,7 +2047,7 @@ static bool
ri_PerformCheck(const RI_ConstraintInfo *riinfo,
RI_QueryKey *qkey, SPIPlanPtr qplan,
Relation fk_rel, Relation pk_rel,
TupleTableSlot *old_slot, TupleTableSlot *new_slot,
TupleTableSlot *oldslot, TupleTableSlot *newslot,
bool detectNewRows, int expect_OK)
{
Relation query_rel,
@ -2090,17 +2090,17 @@ ri_PerformCheck(const RI_ConstraintInfo *riinfo,
}
/* Extract the parameters to be passed into the query */
if (new_slot)
if (newslot)
{
ri_ExtractValues(source_rel, new_slot, riinfo, source_is_pk,
ri_ExtractValues(source_rel, newslot, riinfo, source_is_pk,
vals, nulls);
if (old_slot)
ri_ExtractValues(source_rel, old_slot, riinfo, source_is_pk,
if (oldslot)
ri_ExtractValues(source_rel, oldslot, riinfo, source_is_pk,
vals + riinfo->nkeys, nulls + riinfo->nkeys);
}
else
{
ri_ExtractValues(source_rel, old_slot, riinfo, source_is_pk,
ri_ExtractValues(source_rel, oldslot, riinfo, source_is_pk,
vals, nulls);
}
@ -2170,7 +2170,7 @@ ri_PerformCheck(const RI_ConstraintInfo *riinfo,
(SPI_processed == 0) == (qkey->constr_queryno == RI_PLAN_CHECK_LOOKUPPK))
ri_ReportViolation(riinfo,
pk_rel, fk_rel,
new_slot ? new_slot : old_slot,
newslot ? newslot : oldslot,
NULL,
qkey->constr_queryno);