C++ (Cpp) PG_GETARG_ITEMPOINTER 예제들

예제 #1

파일: tid.c 프로젝트: myechuri/pipelinedb

Datum
bttidcmp(PG_FUNCTION_ARGS)
{
	ItemPointer arg1 = PG_GETARG_ITEMPOINTER(0);
	ItemPointer arg2 = PG_GETARG_ITEMPOINTER(1);

	PG_RETURN_INT32(ItemPointerCompare(arg1, arg2));
}

예제 #2

파일: tid.c 프로젝트: myechuri/pipelinedb

Datum
tidsmaller(PG_FUNCTION_ARGS)
{
	ItemPointer arg1 = PG_GETARG_ITEMPOINTER(0);
	ItemPointer arg2 = PG_GETARG_ITEMPOINTER(1);

	PG_RETURN_ITEMPOINTER(ItemPointerCompare(arg1, arg2) <= 0 ? arg1 : arg2);
}

예제 #3

파일: tid.c 프로젝트: myechuri/pipelinedb

Datum
tidge(PG_FUNCTION_ARGS)
{
	ItemPointer arg1 = PG_GETARG_ITEMPOINTER(0);
	ItemPointer arg2 = PG_GETARG_ITEMPOINTER(1);

	PG_RETURN_BOOL(ItemPointerCompare(arg1, arg2) >= 0);
}

예제 #4

파일: tid.c 프로젝트: sunyangkobe/cscd43

Datum
tidne(PG_FUNCTION_ARGS)
{
	ItemPointer arg1 = PG_GETARG_ITEMPOINTER(0);
	ItemPointer arg2 = PG_GETARG_ITEMPOINTER(1);

	PG_RETURN_BOOL(BlockIdGetBlockNumber(&(arg1->ip_blkid)) !=
				   BlockIdGetBlockNumber(&(arg2->ip_blkid)) ||
				   arg1->ip_posid != arg2->ip_posid);
}

예제 #5

파일: tid.c 프로젝트: myechuri/pipelinedb

Datum
currtid_byrelname(PG_FUNCTION_ARGS)
{
	text	   *relname = PG_GETARG_TEXT_P(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	RangeVar   *relrv;
	Relation	rel;
	AclResult	aclresult;
	Snapshot	snapshot;

	relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname));
	rel = heap_openrv(relrv, AccessShareLock);

	aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(),
								  ACL_SELECT);
	if (aclresult != ACLCHECK_OK)
		aclcheck_error(aclresult, ACL_KIND_CLASS,
					   RelationGetRelationName(rel));

	if (rel->rd_rel->relkind == RELKIND_VIEW || rel->rd_rel->relkind == RELKIND_CONTVIEW)
		return currtid_for_view(rel, tid);

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	ItemPointerCopy(tid, result);

	snapshot = RegisterSnapshot(GetLatestSnapshot());
	heap_get_latest_tid(rel, snapshot, result);
	UnregisterSnapshot(snapshot);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}

예제 #6

파일: tid.c 프로젝트: sunyangkobe/cscd43

Datum
currtid_byreloid(PG_FUNCTION_ARGS)
{
	Oid			reloid = PG_GETARG_OID(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	Relation	rel;

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	if (!reloid)
	{
		*result = Current_last_tid;
		PG_RETURN_ITEMPOINTER(result);
	}

	rel = heap_open(reloid, AccessShareLock);
	if (rel->rd_rel->relkind == RELKIND_VIEW)
		return currtid_for_view(rel, tid);

	ItemPointerCopy(tid, result);
	heap_get_latest_tid(rel, SnapshotNow, result);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}

예제 #7

파일: tid.c 프로젝트: Aldizh/buffer_manager

Datum
currtid_byreloid(PG_FUNCTION_ARGS)
{
	Oid			reloid = PG_GETARG_OID(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	Relation	rel;
	AclResult	aclresult;

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	if (!reloid)
	{
		*result = Current_last_tid;
		PG_RETURN_ITEMPOINTER(result);
	}

	rel = heap_open(reloid, AccessShareLock);

	aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(),
								  ACL_SELECT);
	if (aclresult != ACLCHECK_OK)
		aclcheck_error(aclresult, ACL_KIND_CLASS,
					   RelationGetRelationName(rel));

	if (rel->rd_rel->relkind == RELKIND_VIEW)
		return currtid_for_view(rel, tid);

	ItemPointerCopy(tid, result);
	heap_get_latest_tid(rel, SnapshotNow, result);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}

예제 #8

파일: tid.c 프로젝트: AmiGanguli/postgres

/*
 *		tidsend			- converts tid to binary format
 */
Datum
tidsend(PG_FUNCTION_ARGS)
{
	ItemPointer itemPtr = PG_GETARG_ITEMPOINTER(0);
	StringInfoData buf;

	pq_begintypsend(&buf);
	pq_sendint32(&buf, ItemPointerGetBlockNumberNoCheck(itemPtr));
	pq_sendint16(&buf, ItemPointerGetOffsetNumberNoCheck(itemPtr));
	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

예제 #9

파일: tid.c 프로젝트: BALDELab/incubator-hawq

Datum
tidtoi8(PG_FUNCTION_ARGS)       /*CDB*/
{
    ItemPointer itemPtr = PG_GETARG_ITEMPOINTER(0);
    BlockNumber blockNumber;
    OffsetNumber offsetNumber;

    blockNumber = BlockIdGetBlockNumber(&(itemPtr->ip_blkid));
    offsetNumber = itemPtr->ip_posid;

	PG_RETURN_INT64(((int64)blockNumber << 16) + offsetNumber);
}

예제 #10

파일: tid.c 프로젝트: myechuri/pipelinedb

/* ----------------------------------------------------------------
 *		tidout
 * ----------------------------------------------------------------
 */
Datum
tidout(PG_FUNCTION_ARGS)
{
	ItemPointer itemPtr = PG_GETARG_ITEMPOINTER(0);
	BlockNumber blockNumber;
	OffsetNumber offsetNumber;
	char		buf[32];

	blockNumber = BlockIdGetBlockNumber(&(itemPtr->ip_blkid));
	offsetNumber = itemPtr->ip_posid;

	/* Perhaps someday we should output this as a record. */
	snprintf(buf, sizeof(buf), "(%u,%u)", blockNumber, offsetNumber);

	PG_RETURN_CSTRING(pstrdup(buf));
}

예제 #11

파일: tid.c 프로젝트: myechuri/pipelinedb

/*
 *		tidsend			- converts tid to binary format
 */
Datum
tidsend(PG_FUNCTION_ARGS)
{
	ItemPointer itemPtr = PG_GETARG_ITEMPOINTER(0);
	BlockId		blockId;
	BlockNumber blockNumber;
	OffsetNumber offsetNumber;
	StringInfoData buf;

	blockId = &(itemPtr->ip_blkid);
	blockNumber = BlockIdGetBlockNumber(blockId);
	offsetNumber = itemPtr->ip_posid;

	pq_begintypsend(&buf);
	pq_sendint(&buf, blockNumber, sizeof(blockNumber));
	pq_sendint(&buf, offsetNumber, sizeof(offsetNumber));
	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

예제 #12

파일: tid.c 프로젝트: sunyangkobe/cscd43

/* ----------------------------------------------------------------
 *		tidout
 * ----------------------------------------------------------------
 */
Datum
tidout(PG_FUNCTION_ARGS)
{
	ItemPointer itemPtr = PG_GETARG_ITEMPOINTER(0);
	BlockId		blockId;
	BlockNumber blockNumber;
	OffsetNumber offsetNumber;
	char		buf[32];

	if (!ItemPointerIsValid(itemPtr))
		PG_RETURN_CSTRING(pstrdup("()"));

	blockId = &(itemPtr->ip_blkid);
	blockNumber = BlockIdGetBlockNumber(blockId);
	offsetNumber = itemPtr->ip_posid;

	snprintf(buf, sizeof(buf), "(%u,%u)", blockNumber, offsetNumber);

	PG_RETURN_CSTRING(pstrdup(buf));
}

예제 #13

파일: tid.c 프로젝트: BALDELab/incubator-hawq

Datum
currtid_byrelname(PG_FUNCTION_ARGS)
{
	text	   *relname = PG_GETARG_TEXT_P(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	RangeVar   *relrv;
	Relation	rel;
	AclResult	aclresult;

	/*
	 * Immediately inform client that the function is not supported
	 */

	elog(ERROR, "Function currtid2 is not supported by GPDB");

	relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname));
	rel = heap_openrv(relrv, AccessShareLock);

	aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(),
								  ACL_SELECT);
	if (aclresult != ACLCHECK_OK)
		aclcheck_error(aclresult, ACL_KIND_CLASS,
					   RelationGetRelationName(rel));

	if (rel->rd_rel->relkind == RELKIND_VIEW)
		return currtid_for_view(rel, tid);

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	ItemPointerCopy(tid, result);

	heap_get_latest_tid(rel, SnapshotNow, result);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}

예제 #14

파일: tid.c 프로젝트: sunyangkobe/cscd43

Datum
currtid_byrelname(PG_FUNCTION_ARGS)
{
	text	   *relname = PG_GETARG_TEXT_P(0);
	ItemPointer tid = PG_GETARG_ITEMPOINTER(1);
	ItemPointer result;
	RangeVar   *relrv;
	Relation	rel;

	relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname,
												   "currtid_byrelname"));
	rel = heap_openrv(relrv, AccessShareLock);
	if (rel->rd_rel->relkind == RELKIND_VIEW)
		return currtid_for_view(rel, tid);

	result = (ItemPointer) palloc(sizeof(ItemPointerData));
	ItemPointerCopy(tid, result);

	heap_get_latest_tid(rel, SnapshotNow, result);

	heap_close(rel, AccessShareLock);

	PG_RETURN_ITEMPOINTER(result);
}