pg_range.c File Reference

#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"

Include dependency graph for pg_range.c:

Go to the source code of this file.

Functions
void	RangeCreate (Oid rangeTypeOid, Oid rangeSubType, Oid rangeCollation, Oid rangeSubOpclass, RegProcedure rangeCanonical, RegProcedure rangeSubDiff)
void	RangeDelete (Oid rangeTypeOid)

---

Function Documentation

void RangeCreate	(	Oid	rangeTypeOid,
		Oid	rangeSubType,
		Oid	rangeCollation,
		Oid	rangeSubOpclass,
		RegProcedure	rangeCanonical,
		RegProcedure	rangeSubDiff
	)

Definition at line 37 of file pg_range.c.

References Anum_pg_range_rngcanonical, Anum_pg_range_rngcollation, Anum_pg_range_rngsubdiff, Anum_pg_range_rngsubopc, Anum_pg_range_rngsubtype, Anum_pg_range_rngtypid, CatalogUpdateIndexes(), ObjectAddress::classId, DEPENDENCY_NORMAL, heap_close, heap_form_tuple(), heap_freetuple(), heap_open(), ObjectAddress::objectId, ObjectIdGetDatum, ObjectAddress::objectSubId, OidIsValid, RangeRelationId, recordDependencyOn(), RelationGetDescr, RowExclusiveLock, simple_heap_insert(), and values.

Referenced by DefineRange().

{
    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);
}

void RangeDelete

(

Oid

rangeTypeOid

)

Definition at line 114 of file pg_range.c.

References Anum_pg_range_rngtypid, BTEqualStrategyNumber, heap_close, heap_open(), HeapTupleIsValid, ObjectIdGetDatum, RangeRelationId, RangeTypidIndexId, RowExclusiveLock, ScanKeyInit(), simple_heap_delete(), SnapshotNow, systable_beginscan(), systable_endscan(), systable_getnext(), and HeapTupleData::t_self.

Referenced by RemoveTypeById().

{
    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);
}