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/*-------------------------------------------------------------------------
*
* pg_range.c
* routines to support manipulation of the pg_range relation
*
* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* src/backend/catalog/pg_range.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/genam.h"
#include "access/heapam.h"
#include "access/htup_details.h"
#include "catalog/dependency.h"
#include "catalog/indexing.h"
#include "catalog/pg_collation.h"
#include "catalog/pg_opclass.h"
#include "catalog/pg_proc.h"
#include "catalog/pg_range.h"
#include "catalog/pg_type.h"
#include "utils/fmgroids.h"
#include "utils/rel.h"
#include "utils/tqual.h"
/*
* RangeCreate
* Create an entry in pg_range.
*/
void
RangeCreate(Oid rangeTypeOid, Oid rangeSubType, Oid rangeCollation,
Oid rangeSubOpclass, RegProcedure rangeCanonical,
RegProcedure rangeSubDiff)
{
Relation pg_range;
Datum values[Natts_pg_range];
bool nulls[Natts_pg_range];
HeapTuple tup;
ObjectAddress myself;
ObjectAddress referenced;
pg_range = heap_open(RangeRelationId, RowExclusiveLock);
memset(nulls, 0, sizeof(nulls));
values[Anum_pg_range_rngtypid - 1] = ObjectIdGetDatum(rangeTypeOid);
values[Anum_pg_range_rngsubtype - 1] = ObjectIdGetDatum(rangeSubType);
values[Anum_pg_range_rngcollation - 1] = ObjectIdGetDatum(rangeCollation);
values[Anum_pg_range_rngsubopc - 1] = ObjectIdGetDatum(rangeSubOpclass);
values[Anum_pg_range_rngcanonical - 1] = ObjectIdGetDatum(rangeCanonical);
values[Anum_pg_range_rngsubdiff - 1] = ObjectIdGetDatum(rangeSubDiff);
tup = heap_form_tuple(RelationGetDescr(pg_range), values, nulls);
simple_heap_insert(pg_range, tup);
CatalogUpdateIndexes(pg_range, tup);
heap_freetuple(tup);
/* record type's dependencies on range-related items */
myself.classId = TypeRelationId;
myself.objectId = rangeTypeOid;
myself.objectSubId = 0;
referenced.classId = TypeRelationId;
referenced.objectId = rangeSubType;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
referenced.classId = OperatorClassRelationId;
referenced.objectId = rangeSubOpclass;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
if (OidIsValid(rangeCollation))
{
referenced.classId = CollationRelationId;
referenced.objectId = rangeCollation;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
}
if (OidIsValid(rangeCanonical))
{
referenced.classId = ProcedureRelationId;
referenced.objectId = rangeCanonical;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
}
if (OidIsValid(rangeSubDiff))
{
referenced.classId = ProcedureRelationId;
referenced.objectId = rangeSubDiff;
referenced.objectSubId = 0;
recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
}
heap_close(pg_range, RowExclusiveLock);
}
/*
* RangeDelete
* Remove the pg_range entry for the specified type.
*/
void
RangeDelete(Oid rangeTypeOid)
{
Relation pg_range;
ScanKeyData key[1];
SysScanDesc scan;
HeapTuple tup;
pg_range = heap_open(RangeRelationId, RowExclusiveLock);
ScanKeyInit(&key[0],
Anum_pg_range_rngtypid,
BTEqualStrategyNumber, F_OIDEQ,
ObjectIdGetDatum(rangeTypeOid));
scan = systable_beginscan(pg_range, RangeTypidIndexId, true,
SnapshotNow, 1, key);
while (HeapTupleIsValid(tup = systable_getnext(scan)))
{
simple_heap_delete(pg_range, &tup->t_self);
}
systable_endscan(scan);
heap_close(pg_range, RowExclusiveLock);
}
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