*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/commands/Attic/rename.c,v 1.62 2001/11/12 00:46:36 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/commands/Attic/rename.c,v 1.63 2001/11/12 01:34:50 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "utils/temprel.h"
-#define RI_TRIGGER_PK 1 /* is a trigger on the PK relation */
-#define RI_TRIGGER_FK 2 /* is a trigger on the FK relation */
+#define RI_TRIGGER_PK 1 /* is a trigger on the PK relation */
+#define RI_TRIGGER_FK 2 /* is a trigger on the FK relation */
#define RI_TRIGGER_NONE 0 /* is not an RI trigger function */
-static int ri_trigger_type(Oid tgfoid);
+static int ri_trigger_type(Oid tgfoid);
static void update_ri_trigger_args(Oid relid,
- const char* oldname,
- const char* newname,
- bool fk_scan,
- bool update_relname);
+ const char *oldname,
+ const char *newname,
+ bool fk_scan,
+ bool update_relname);
/*
if (targetrelation->rd_rel->reltriggers > 0)
{
/* update tgargs column reference where att is primary key */
- update_ri_trigger_args(RelationGetRelid(targetrelation),
+ update_ri_trigger_args(RelationGetRelid(targetrelation),
oldattname, newattname,
false, false);
/* update tgargs column reference where att is foreign key */
*/
static void
update_ri_trigger_args(Oid relid,
- const char* oldname,
- const char* newname,
- bool fk_scan,
- bool update_relname)
+ const char *oldname,
+ const char *newname,
+ bool fk_scan,
+ bool update_relname)
{
- Relation tgrel;
- Relation irel;
- ScanKeyData skey[1];
- IndexScanDesc idxtgscan;
+ Relation tgrel;
+ Relation irel;
+ ScanKeyData skey[1];
+ IndexScanDesc idxtgscan;
RetrieveIndexResult idxres;
- Datum values[Natts_pg_trigger];
- char nulls[Natts_pg_trigger];
- char replaces[Natts_pg_trigger];
+ Datum values[Natts_pg_trigger];
+ char nulls[Natts_pg_trigger];
+ char replaces[Natts_pg_trigger];
tgrel = heap_openr(TriggerRelationName, RowExclusiveLock);
if (fk_scan)
else
irel = index_openr(TriggerRelidIndex);
- ScanKeyEntryInitialize(&skey[0], 0x0,
+ ScanKeyEntryInitialize(&skey[0], 0x0,
1, /* always column 1 of index */
F_OIDEQ,
ObjectIdGetDatum(relid));
idxtgscan = index_beginscan(irel, false, 1, skey);
-
+
while ((idxres = index_getnext(idxtgscan, ForwardScanDirection)) != NULL)
{
- HeapTupleData tupledata;
- Buffer buffer;
- HeapTuple tuple;
- Form_pg_trigger pg_trigger;
- bytea* val;
- bytea* newtgargs;
- bool isnull;
- int tg_type;
- bool examine_pk;
- bool changed;
- int tgnargs;
- int i;
- int newlen;
- const char *arga[RI_MAX_ARGUMENTS];
- const char *argp;
+ HeapTupleData tupledata;
+ Buffer buffer;
+ HeapTuple tuple;
+ Form_pg_trigger pg_trigger;
+ bytea *val;
+ bytea *newtgargs;
+ bool isnull;
+ int tg_type;
+ bool examine_pk;
+ bool changed;
+ int tgnargs;
+ int i;
+ int newlen;
+ const char *arga[RI_MAX_ARGUMENTS];
+ const char *argp;
tupledata.t_self = idxres->heap_iptr;
heap_fetch(tgrel, SnapshotNow, &tupledata, &buffer, idxtgscan);
/*
* It is an RI trigger, so parse the tgargs bytea.
*
- * NB: we assume the field will never be compressed or moved
- * out of line; so does trigger.c ...
+ * NB: we assume the field will never be compressed or moved out of
+ * line; so does trigger.c ...
*/
tgnargs = pg_trigger->tgnargs;
val = (bytea *) fastgetattr(tuple,
for (i = 0; i < tgnargs; i++)
{
arga[i] = argp;
- argp += strlen(argp)+1;
+ argp += strlen(argp) + 1;
}
/*
* Figure out which item(s) to look at. If the trigger is
- * primary-key type and attached to my rel, I should look at
- * the PK fields; if it is foreign-key type and attached to my
- * rel, I should look at the FK fields. But the opposite rule
- * holds when examining triggers found by tgconstrrel search.
+ * primary-key type and attached to my rel, I should look at the
+ * PK fields; if it is foreign-key type and attached to my rel, I
+ * should look at the FK fields. But the opposite rule holds when
+ * examining triggers found by tgconstrrel search.
*/
examine_pk = (tg_type == RI_TRIGGER_PK) == (!fk_scan);
simple_heap_update(tgrel, &tuple->t_self, tuple);
{
- Relation irelations[Num_pg_attr_indices];
+ Relation irelations[Num_pg_attr_indices];
+
+ CatalogOpenIndices(Num_pg_trigger_indices, Name_pg_trigger_indices, irelations);
+ CatalogIndexInsert(irelations, Num_pg_trigger_indices, tgrel, tuple);
+ CatalogCloseIndices(Num_pg_trigger_indices, irelations);
+ }
- CatalogOpenIndices(Num_pg_trigger_indices, Name_pg_trigger_indices, irelations);
- CatalogIndexInsert(irelations, Num_pg_trigger_indices, tgrel, tuple);
- CatalogCloseIndices(Num_pg_trigger_indices, irelations);
- }
-
/* free up our scratch memory */
pfree(newtgargs);
heap_freetuple(tuple);
}
- index_endscan(idxtgscan);
- index_close(irel);
+ index_endscan(idxtgscan);
+ index_close(irel);
heap_close(tgrel, RowExclusiveLock);
/*
- * Increment cmd counter to make updates visible; this is needed
- * in case the same tuple has to be updated again by next pass
- * (can happen in case of a self-referential FK relationship).
+ * Increment cmd counter to make updates visible; this is needed in
+ * case the same tuple has to be updated again by next pass (can
+ * happen in case of a self-referential FK relationship).
*/
- CommandCounterIncrement();
+ CommandCounterIncrement();
}
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