C++ BoolGetDatum函数代码示例

//.........这里部分代码省略.........
		confkeyArray = construct_array(fkdatums, foreignNKeys,
									   INT2OID, 2, true, 's');
		for (i = 0; i < foreignNKeys; i++)
			fkdatums[i] = ObjectIdGetDatum(pfEqOp[i]);
		conpfeqopArray = construct_array(fkdatums, foreignNKeys,
										 OIDOID, sizeof(Oid), true, 'i');
		for (i = 0; i < foreignNKeys; i++)
			fkdatums[i] = ObjectIdGetDatum(ppEqOp[i]);
		conppeqopArray = construct_array(fkdatums, foreignNKeys,
										 OIDOID, sizeof(Oid), true, 'i');
		for (i = 0; i < foreignNKeys; i++)
			fkdatums[i] = ObjectIdGetDatum(ffEqOp[i]);
		conffeqopArray = construct_array(fkdatums, foreignNKeys,
										 OIDOID, sizeof(Oid), true, 'i');
	}
	else
	{
		confkeyArray = NULL;
		conpfeqopArray = NULL;
		conppeqopArray = NULL;
		conffeqopArray = NULL;
	}

	/* initialize nulls and values */
	for (i = 0; i < Natts_pg_constraint; i++)
	{
		nulls[i] = false;
		values[i] = (Datum) 0;
	}

	values[Anum_pg_constraint_conname - 1] = NameGetDatum(&cname);
	values[Anum_pg_constraint_connamespace - 1] = ObjectIdGetDatum(constraintNamespace);
	values[Anum_pg_constraint_contype - 1] = CharGetDatum(constraintType);
	values[Anum_pg_constraint_condeferrable - 1] = BoolGetDatum(isDeferrable);
	values[Anum_pg_constraint_condeferred - 1] = BoolGetDatum(isDeferred);
	values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(relId);
	values[Anum_pg_constraint_contypid - 1] = ObjectIdGetDatum(domainId);
	values[Anum_pg_constraint_confrelid - 1] = ObjectIdGetDatum(foreignRelId);
	values[Anum_pg_constraint_confupdtype - 1] = CharGetDatum(foreignUpdateType);
	values[Anum_pg_constraint_confdeltype - 1] = CharGetDatum(foreignDeleteType);
	values[Anum_pg_constraint_confmatchtype - 1] = CharGetDatum(foreignMatchType);

	if (conkeyArray)
		values[Anum_pg_constraint_conkey - 1] = PointerGetDatum(conkeyArray);
	else
		nulls[Anum_pg_constraint_conkey - 1] = true;

	if (confkeyArray)
		values[Anum_pg_constraint_confkey - 1] = PointerGetDatum(confkeyArray);
	else
		nulls[Anum_pg_constraint_confkey - 1] = true;

	if (conpfeqopArray)
		values[Anum_pg_constraint_conpfeqop - 1] = PointerGetDatum(conpfeqopArray);
	else
		nulls[Anum_pg_constraint_conpfeqop - 1] = 'n';

	if (conppeqopArray)
		values[Anum_pg_constraint_conppeqop - 1] = PointerGetDatum(conppeqopArray);
	else
		nulls[Anum_pg_constraint_conppeqop - 1] = 'n';

	if (conffeqopArray)
		values[Anum_pg_constraint_conffeqop - 1] = PointerGetDatum(conffeqopArray);
	else
		nulls[Anum_pg_constraint_conffeqop - 1] = 'n';

//.........这里部分代码省略.........
							variadicType = get_element_type(allParams[i]);
							if (!OidIsValid(variadicType))
								elog(ERROR, "variadic parameter is not an array");
							break;
					}
					break;
				default:
					elog(ERROR, "invalid parameter mode '%c'", modes[i]);
					break;
			}
		}
	}

	/*
	 * All seems OK; prepare the data to be inserted into pg_proc.
	 */

	for (i = 0; i < Natts_pg_proc; ++i)
	{
		nulls[i] = false;
		values[i] = (Datum) 0;
		replaces[i] = true;
	}

	namestrcpy(&procname, procedureName);
	values[Anum_pg_proc_proname - 1] = NameGetDatum(&procname);
	values[Anum_pg_proc_pronamespace - 1] = ObjectIdGetDatum(procNamespace);
	values[Anum_pg_proc_proowner - 1] = ObjectIdGetDatum(proowner);
	values[Anum_pg_proc_prolang - 1] = ObjectIdGetDatum(languageObjectId);
	values[Anum_pg_proc_procost - 1] = Float4GetDatum(procost);
	values[Anum_pg_proc_prorows - 1] = Float4GetDatum(prorows);
	values[Anum_pg_proc_provariadic - 1] = ObjectIdGetDatum(variadicType);
	values[Anum_pg_proc_protransform - 1] = ObjectIdGetDatum(InvalidOid);
	values[Anum_pg_proc_proisagg - 1] = BoolGetDatum(isAgg);
	values[Anum_pg_proc_proiswindow - 1] = BoolGetDatum(isWindowFunc);
	values[Anum_pg_proc_prosecdef - 1] = BoolGetDatum(security_definer);
	values[Anum_pg_proc_proisstrict - 1] = BoolGetDatum(isStrict);
	values[Anum_pg_proc_proretset - 1] = BoolGetDatum(returnsSet);
	values[Anum_pg_proc_provolatile - 1] = CharGetDatum(volatility);
	values[Anum_pg_proc_pronargs - 1] = UInt16GetDatum(parameterCount);
	values[Anum_pg_proc_pronargdefaults - 1] = UInt16GetDatum(list_length(parameterDefaults));
	values[Anum_pg_proc_prorettype - 1] = ObjectIdGetDatum(returnType);
	values[Anum_pg_proc_proargtypes - 1] = PointerGetDatum(parameterTypes);
	if (allParameterTypes != PointerGetDatum(NULL))
		values[Anum_pg_proc_proallargtypes - 1] = allParameterTypes;
	else
		nulls[Anum_pg_proc_proallargtypes - 1] = true;
	if (parameterModes != PointerGetDatum(NULL))
		values[Anum_pg_proc_proargmodes - 1] = parameterModes;
	else
		nulls[Anum_pg_proc_proargmodes - 1] = true;
	if (parameterNames != PointerGetDatum(NULL))
		values[Anum_pg_proc_proargnames - 1] = parameterNames;
	else
		nulls[Anum_pg_proc_proargnames - 1] = true;
	if (parameterDefaults != NIL)
		values[Anum_pg_proc_proargdefaults - 1] = CStringGetTextDatum(nodeToString(parameterDefaults));
	else
		nulls[Anum_pg_proc_proargdefaults - 1] = true;
	values[Anum_pg_proc_prosrc - 1] = CStringGetTextDatum(prosrc);
	if (probin)
		values[Anum_pg_proc_probin - 1] = CStringGetTextDatum(probin);
	else
		nulls[Anum_pg_proc_probin - 1] = true;
	if (proconfig != PointerGetDatum(NULL))
		values[Anum_pg_proc_proconfig - 1] = proconfig;

static Datum _Boolean_coerceObject(Type self, jobject booleanObj)
{
	return BoolGetDatum(booleanObj == 0 ? false : JNI_callBooleanMethod(booleanObj, s_Boolean_booleanValue) == JNI_TRUE);
}

/* ----------------------------------------------------------------
 *		TypeShellMake
 *
 *		This procedure inserts a "shell" tuple into the pg_type relation.
 *		The type tuple inserted has valid but dummy values, and its
 *		"typisdefined" field is false indicating it's not really defined.
 *
 *		This is used so that a tuple exists in the catalogs.  The I/O
 *		functions for the type will link to this tuple.  When the full
 *		CREATE TYPE command is issued, the bogus values will be replaced
 *		with correct ones, and "typisdefined" will be set to true.
 * ----------------------------------------------------------------
 */
Oid
TypeShellMake(const char *typeName, Oid typeNamespace, Oid ownerId)
{
	Relation	pg_type_desc;
	TupleDesc	tupDesc;
	int			i;
	HeapTuple	tup;
	Datum		values[Natts_pg_type];
	bool		nulls[Natts_pg_type];
	Oid			typoid;
	NameData	name;

	Assert(PointerIsValid(typeName));

	/*
	 * open pg_type
	 */
	pg_type_desc = heap_open(TypeRelationId, RowExclusiveLock);
	tupDesc = pg_type_desc->rd_att;

	/*
	 * initialize our *nulls and *values arrays
	 */
	for (i = 0; i < Natts_pg_type; ++i)
	{
		nulls[i] = false;
		values[i] = (Datum) NULL;		/* redundant, but safe */
	}

	/*
	 * initialize *values with the type name and dummy values
	 *
	 * The representational details are the same as int4 ... it doesn't really
	 * matter what they are so long as they are consistent.  Also note that we
	 * give it typtype = TYPTYPE_PSEUDO as extra insurance that it won't be
	 * mistaken for a usable type.
	 */
	i = 0;
	namestrcpy(&name, typeName);
	values[i++] = NameGetDatum(&name);	/* typname */
	values[i++] = ObjectIdGetDatum(typeNamespace);		/* typnamespace */
	values[i++] = ObjectIdGetDatum(ownerId);	/* typowner */
	values[i++] = Int16GetDatum(sizeof(int4));	/* typlen */
	values[i++] = BoolGetDatum(true);	/* typbyval */
	values[i++] = CharGetDatum(TYPTYPE_PSEUDO); /* typtype */
	values[i++] = CharGetDatum(TYPCATEGORY_PSEUDOTYPE); /* typcategory */
	values[i++] = BoolGetDatum(false);	/* typispreferred */
	values[i++] = BoolGetDatum(false);	/* typisdefined */
	values[i++] = CharGetDatum(DEFAULT_TYPDELIM);		/* typdelim */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typrelid */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typelem */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typarray */
	values[i++] = ObjectIdGetDatum(F_SHELL_IN); /* typinput */
	values[i++] = ObjectIdGetDatum(F_SHELL_OUT);		/* typoutput */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typreceive */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typsend */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typmodin */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typmodout */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typanalyze */
	values[i++] = CharGetDatum('i');	/* typalign */
	values[i++] = CharGetDatum('p');	/* typstorage */
	values[i++] = BoolGetDatum(false);	/* typnotnull */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typbasetype */
	values[i++] = Int32GetDatum(-1);	/* typtypmod */
	values[i++] = Int32GetDatum(0);		/* typndims */
	values[i++] = ObjectIdGetDatum(InvalidOid); /* typcollation */
	nulls[i++] = true;			/* typdefaultbin */
	nulls[i++] = true;			/* typdefault */

	/*
	 * create a new type tuple
	 */
	tup = heap_form_tuple(tupDesc, values, nulls);

	/* Use binary-upgrade override for pg_type.oid, if supplied. */
	if (IsBinaryUpgrade && OidIsValid(binary_upgrade_next_pg_type_oid))
	{
		HeapTupleSetOid(tup, binary_upgrade_next_pg_type_oid);
		binary_upgrade_next_pg_type_oid = InvalidOid;
	}

	/*
	 * insert the tuple in the relation and get the tuple's oid.
	 */
	typoid = simple_heap_insert(pg_type_desc, tup);

	CatalogUpdateIndexes(pg_type_desc, tup);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
							 false,		/* isStrict (not needed for agg) */
							 PROVOLATILE_IMMUTABLE,		/* volatility (not
														 * needed for agg) */
							 PROPARALLEL_UNSAFE,
							 parameterTypes,	/* paramTypes */
							 allParameterTypes, /* allParamTypes */
							 parameterModes,	/* parameterModes */
							 parameterNames,	/* parameterNames */
							 parameterDefaults, /* parameterDefaults */
							 PointerGetDatum(NULL),		/* trftypes */
							 PointerGetDatum(NULL),		/* proconfig */
							 1, /* procost */
							 0);	/* prorows */
	procOid = myself.objectId;

	/*
	 * Okay to create the pg_aggregate entry.
	 */

	/* initialize nulls and values */
	for (i = 0; i < Natts_pg_aggregate; i++)
	{
		nulls[i] = false;
		values[i] = (Datum) NULL;
	}
	values[Anum_pg_aggregate_aggfnoid - 1] = ObjectIdGetDatum(procOid);
	values[Anum_pg_aggregate_aggkind - 1] = CharGetDatum(aggKind);
	values[Anum_pg_aggregate_aggnumdirectargs - 1] = Int16GetDatum(numDirectArgs);
	values[Anum_pg_aggregate_aggtransfn - 1] = ObjectIdGetDatum(transfn);
	values[Anum_pg_aggregate_aggfinalfn - 1] = ObjectIdGetDatum(finalfn);
	values[Anum_pg_aggregate_aggmtransfn - 1] = ObjectIdGetDatum(mtransfn);
	values[Anum_pg_aggregate_aggminvtransfn - 1] = ObjectIdGetDatum(minvtransfn);
	values[Anum_pg_aggregate_aggmfinalfn - 1] = ObjectIdGetDatum(mfinalfn);
	values[Anum_pg_aggregate_aggfinalextra - 1] = BoolGetDatum(finalfnExtraArgs);
	values[Anum_pg_aggregate_aggmfinalextra - 1] = BoolGetDatum(mfinalfnExtraArgs);
	values[Anum_pg_aggregate_aggsortop - 1] = ObjectIdGetDatum(sortop);
	values[Anum_pg_aggregate_aggtranstype - 1] = ObjectIdGetDatum(aggTransType);
	values[Anum_pg_aggregate_aggtransspace - 1] = Int32GetDatum(aggTransSpace);
	values[Anum_pg_aggregate_aggmtranstype - 1] = ObjectIdGetDatum(aggmTransType);
	values[Anum_pg_aggregate_aggmtransspace - 1] = Int32GetDatum(aggmTransSpace);
	if (agginitval)
		values[Anum_pg_aggregate_agginitval - 1] = CStringGetTextDatum(agginitval);
	else
		nulls[Anum_pg_aggregate_agginitval - 1] = true;
	if (aggminitval)
		values[Anum_pg_aggregate_aggminitval - 1] = CStringGetTextDatum(aggminitval);
	else
		nulls[Anum_pg_aggregate_aggminitval - 1] = true;

	aggdesc = heap_open(AggregateRelationId, RowExclusiveLock);
	tupDesc = aggdesc->rd_att;

	tup = heap_form_tuple(tupDesc, values, nulls);
	simple_heap_insert(aggdesc, tup);

	CatalogUpdateIndexes(aggdesc, tup);

	heap_close(aggdesc, RowExclusiveLock);

	/*
	 * Create dependencies for the aggregate (above and beyond those already
	 * made by ProcedureCreate).  Note: we don't need an explicit dependency
	 * on aggTransType since we depend on it indirectly through transfn.
	 * Likewise for aggmTransType if any.
	 */

//.........这里部分代码省略.........
										 OIDOID, sizeof(Oid), true, 'i');
	}
	else
	{
		confkeyArray = NULL;
		conpfeqopArray = NULL;
		conppeqopArray = NULL;
		conffeqopArray = NULL;
	}

	if (exclOp != NULL)
	{
		Datum	   *opdatums;

		opdatums = (Datum *) palloc(constraintNKeys * sizeof(Datum));
		for (i = 0; i < constraintNKeys; i++)
			opdatums[i] = ObjectIdGetDatum(exclOp[i]);
		conexclopArray = construct_array(opdatums, constraintNKeys,
										 OIDOID, sizeof(Oid), true, 'i');
	}
	else
		conexclopArray = NULL;

	/* initialize nulls and values */
	for (i = 0; i < Natts_pg_constraint; i++)
	{
		nulls[i] = false;
		values[i] = (Datum) NULL;
	}

	values[Anum_pg_constraint_conname - 1] = NameGetDatum(&cname);
	values[Anum_pg_constraint_connamespace - 1] = ObjectIdGetDatum(constraintNamespace);
	values[Anum_pg_constraint_contype - 1] = CharGetDatum(constraintType);
	values[Anum_pg_constraint_condeferrable - 1] = BoolGetDatum(isDeferrable);
	values[Anum_pg_constraint_condeferred - 1] = BoolGetDatum(isDeferred);
	values[Anum_pg_constraint_convalidated - 1] = BoolGetDatum(isValidated);
	values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(relId);
	values[Anum_pg_constraint_contypid - 1] = ObjectIdGetDatum(domainId);
	values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(indexRelId);
	values[Anum_pg_constraint_confrelid - 1] = ObjectIdGetDatum(foreignRelId);
	values[Anum_pg_constraint_confupdtype - 1] = CharGetDatum(foreignUpdateType);
	values[Anum_pg_constraint_confdeltype - 1] = CharGetDatum(foreignDeleteType);
	values[Anum_pg_constraint_confmatchtype - 1] = CharGetDatum(foreignMatchType);
	values[Anum_pg_constraint_conislocal - 1] = BoolGetDatum(conIsLocal);
	values[Anum_pg_constraint_coninhcount - 1] = Int32GetDatum(conInhCount);
	values[Anum_pg_constraint_conisonly - 1] = BoolGetDatum(conIsOnly);

	if (conkeyArray)
		values[Anum_pg_constraint_conkey - 1] = PointerGetDatum(conkeyArray);
	else
		nulls[Anum_pg_constraint_conkey - 1] = true;

	if (confkeyArray)
		values[Anum_pg_constraint_confkey - 1] = PointerGetDatum(confkeyArray);
	else
		nulls[Anum_pg_constraint_confkey - 1] = true;

	if (conpfeqopArray)
		values[Anum_pg_constraint_conpfeqop - 1] = PointerGetDatum(conpfeqopArray);
	else
		nulls[Anum_pg_constraint_conpfeqop - 1] = true;

	if (conppeqopArray)
		values[Anum_pg_constraint_conppeqop - 1] = PointerGetDatum(conppeqopArray);
	else
		nulls[Anum_pg_constraint_conppeqop - 1] = true;

Datum
pg_control_checkpoint(PG_FUNCTION_ARGS)
{
	Datum		values[19];
	bool		nulls[19];
	TupleDesc	tupdesc;
	HeapTuple	htup;
	ControlFileData *ControlFile;
	XLogSegNo	segno;
	char		xlogfilename[MAXFNAMELEN];
	bool		crc_ok;

	/*
	 * Construct a tuple descriptor for the result row.  This must match this
	 * function's pg_proc entry!
	 */
	tupdesc = CreateTemplateTupleDesc(18);
	TupleDescInitEntry(tupdesc, (AttrNumber) 1, "checkpoint_lsn",
					   LSNOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 2, "redo_lsn",
					   LSNOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 3, "redo_wal_file",
					   TEXTOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 4, "timeline_id",
					   INT4OID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 5, "prev_timeline_id",
					   INT4OID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 6, "full_page_writes",
					   BOOLOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 7, "next_xid",
					   TEXTOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 8, "next_oid",
					   OIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 9, "next_multixact_id",
					   XIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 10, "next_multi_offset",
					   XIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 11, "oldest_xid",
					   XIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 12, "oldest_xid_dbid",
					   OIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 13, "oldest_active_xid",
					   XIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 14, "oldest_multi_xid",
					   XIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 15, "oldest_multi_dbid",
					   OIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 16, "oldest_commit_ts_xid",
					   XIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 17, "newest_commit_ts_xid",
					   XIDOID, -1, 0);
	TupleDescInitEntry(tupdesc, (AttrNumber) 18, "checkpoint_time",
					   TIMESTAMPTZOID, -1, 0);
	tupdesc = BlessTupleDesc(tupdesc);

	/* Read the control file. */
	ControlFile = get_controlfile(DataDir, &crc_ok);
	if (!crc_ok)
		ereport(ERROR,
				(errmsg("calculated CRC checksum does not match value stored in file")));

	/*
	 * Calculate name of the WAL file containing the latest checkpoint's REDO
	 * start point.
	 */
	XLByteToSeg(ControlFile->checkPointCopy.redo, segno, wal_segment_size);
	XLogFileName(xlogfilename, ControlFile->checkPointCopy.ThisTimeLineID,
				 segno, wal_segment_size);

	/* Populate the values and null arrays */
	values[0] = LSNGetDatum(ControlFile->checkPoint);
	nulls[0] = false;

	values[1] = LSNGetDatum(ControlFile->checkPointCopy.redo);
	nulls[1] = false;

	values[2] = CStringGetTextDatum(xlogfilename);
	nulls[2] = false;

	values[3] = Int32GetDatum(ControlFile->checkPointCopy.ThisTimeLineID);
	nulls[3] = false;

	values[4] = Int32GetDatum(ControlFile->checkPointCopy.PrevTimeLineID);
	nulls[4] = false;

	values[5] = BoolGetDatum(ControlFile->checkPointCopy.fullPageWrites);
	nulls[5] = false;

	values[6] = CStringGetTextDatum(psprintf("%u:%u",
											 EpochFromFullTransactionId(ControlFile->checkPointCopy.nextFullXid),
											 XidFromFullTransactionId(ControlFile->checkPointCopy.nextFullXid)));
	nulls[6] = false;

	values[7] = ObjectIdGetDatum(ControlFile->checkPointCopy.nextOid);
	nulls[7] = false;

	values[8] = TransactionIdGetDatum(ControlFile->checkPointCopy.nextMulti);
	nulls[8] = false;

	values[9] = TransactionIdGetDatum(ControlFile->checkPointCopy.nextMultiOffset);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
			LWLockAcquire(FirstBufMappingLock + i, LW_SHARED);

		/*
		 * Scan though all the buffers, saving the relevant fields in the
		 * fctx->record structure.
		 */
		for (i = 0, bufHdr = BufferDescriptors; i < NBuffers; i++, bufHdr++)
		{
			/* Lock each buffer header before inspecting. */
			LockBufHdr(bufHdr);

			fctx->record[i].bufferid = BufferDescriptorGetBuffer(bufHdr);
			fctx->record[i].relfilenode = bufHdr->tag.rnode.relNode;
			fctx->record[i].reltablespace = bufHdr->tag.rnode.spcNode;
			fctx->record[i].reldatabase = bufHdr->tag.rnode.dbNode;
			fctx->record[i].forknum = bufHdr->tag.forkNum;
			fctx->record[i].blocknum = bufHdr->tag.blockNum;
			fctx->record[i].usagecount = bufHdr->usage_count;

			if (bufHdr->flags & BM_DIRTY)
				fctx->record[i].isdirty = true;
			else
				fctx->record[i].isdirty = false;

			/* Note if the buffer is valid, and has storage created */
			if ((bufHdr->flags & BM_VALID) && (bufHdr->flags & BM_TAG_VALID))
				fctx->record[i].isvalid = true;
			else
				fctx->record[i].isvalid = false;

			UnlockBufHdr(bufHdr);
		}

		/*
		 * And release locks.  We do this in reverse order for two reasons:
		 * (1) Anyone else who needs more than one of the locks will be trying
		 * to lock them in increasing order; we don't want to release the
		 * other process until it can get all the locks it needs. (2) This
		 * avoids O(N^2) behavior inside LWLockRelease.
		 */
		for (i = NUM_BUFFER_PARTITIONS; --i >= 0;)
			LWLockRelease(FirstBufMappingLock + i);
	}

	funcctx = SRF_PERCALL_SETUP();

	/* Get the saved state */
	fctx = funcctx->user_fctx;

	if (funcctx->call_cntr < funcctx->max_calls)
	{
		uint32		i = funcctx->call_cntr;
		Datum		values[NUM_BUFFERCACHE_PAGES_ELEM];
		bool		nulls[NUM_BUFFERCACHE_PAGES_ELEM];

		values[0] = Int32GetDatum(fctx->record[i].bufferid);
		nulls[0] = false;

		/*
		 * Set all fields except the bufferid to null if the buffer is unused
		 * or not valid.
		 */
		if (fctx->record[i].blocknum == InvalidBlockNumber ||
			fctx->record[i].isvalid == false)
		{
			nulls[1] = true;
			nulls[2] = true;
			nulls[3] = true;
			nulls[4] = true;
			nulls[5] = true;
			nulls[6] = true;
			nulls[7] = true;
		}
		else
		{
			values[1] = ObjectIdGetDatum(fctx->record[i].relfilenode);
			nulls[1] = false;
			values[2] = ObjectIdGetDatum(fctx->record[i].reltablespace);
			nulls[2] = false;
			values[3] = ObjectIdGetDatum(fctx->record[i].reldatabase);
			nulls[3] = false;
			values[4] = ObjectIdGetDatum(fctx->record[i].forknum);
			nulls[4] = false;
			values[5] = Int64GetDatum((int64) fctx->record[i].blocknum);
			nulls[5] = false;
			values[6] = BoolGetDatum(fctx->record[i].isdirty);
			nulls[6] = false;
			values[7] = Int16GetDatum(fctx->record[i].usagecount);
			nulls[7] = false;
		}

		/* Build and return the tuple. */
		tuple = heap_form_tuple(fctx->tupdesc, values, nulls);
		result = HeapTupleGetDatum(tuple);

		SRF_RETURN_NEXT(funcctx, result);
	}
	else
		SRF_RETURN_DONE(funcctx);
}

/*
 * InsertRule -
 *	  takes the arguments and inserts them as a row into the system
 *	  relation "pg_rewrite"
 */
static Oid
InsertRule(char *rulname,
		   int evtype,
		   Oid eventrel_oid,
		   AttrNumber evslot_index,
		   bool evinstead,
		   Node *event_qual,
		   List *action,
		   bool replace,
		   Oid ruleOid)
{
	char	   *evqual = nodeToString(event_qual);
	char	   *actiontree = nodeToString((Node *) action);
	int			i;
	Datum		values[Natts_pg_rewrite];
	bool		nulls[Natts_pg_rewrite];
	bool		replaces[Natts_pg_rewrite];
	NameData	rname;
	HeapTuple	tup,
				oldtup;
	Oid			rewriteObjectId;
	ObjectAddress myself,
				referenced;
	bool		is_update = false;
	cqContext  *pcqCtx;

	/*
	 * Set up *nulls and *values arrays
	 */
	MemSet(nulls, false, sizeof(nulls));

	i = 0;
	namestrcpy(&rname, rulname);
	values[i++] = NameGetDatum(&rname); /* rulename */
	values[i++] = ObjectIdGetDatum(eventrel_oid);		/* ev_class */
	values[i++] = Int16GetDatum(evslot_index);	/* ev_attr */
	values[i++] = CharGetDatum(evtype + '0');	/* ev_type */
	values[i++] = BoolGetDatum(evinstead);		/* is_instead */
	values[i++] = CStringGetTextDatum(evqual);	/* ev_qual */
	values[i++] = CStringGetTextDatum(actiontree);		/* ev_action */

	/*
	 * Ready to store new pg_rewrite tuple
	 */

	/*
	 * Check to see if we are replacing an existing tuple
	 */
	pcqCtx = caql_beginscan(
			NULL,
			cql("SELECT * FROM pg_rewrite "
				" WHERE ev_class = :1 "
				" AND rulename = :2 "
				" FOR UPDATE ",
				ObjectIdGetDatum(eventrel_oid),
				CStringGetDatum(rulname)));
	
	oldtup = caql_getnext(pcqCtx);

	if (HeapTupleIsValid(oldtup))
	{
		if (!replace)
			ereport(ERROR,
					(errcode(ERRCODE_DUPLICATE_OBJECT),
					 errmsg("rule \"%s\" for relation \"%s\" already exists",
							rulname, get_rel_name(eventrel_oid))));

		/*
		 * When replacing, we don't need to replace every attribute
		 */
		MemSet(replaces, false, sizeof(replaces));
		replaces[Anum_pg_rewrite_ev_attr - 1] = true;
		replaces[Anum_pg_rewrite_ev_type - 1] = true;
		replaces[Anum_pg_rewrite_is_instead - 1] = true;
		replaces[Anum_pg_rewrite_ev_qual - 1] = true;
		replaces[Anum_pg_rewrite_ev_action - 1] = true;

		tup = caql_modify_current(pcqCtx,
								  values, nulls, replaces);

		caql_update_current(pcqCtx, tup);
		/* and Update indexes (implicit) */

		rewriteObjectId = HeapTupleGetOid(tup);
		is_update = true;
	}
	else
	{
		tup = caql_form_tuple(pcqCtx, values, nulls);

		if (OidIsValid(ruleOid))
			HeapTupleSetOid(tup, ruleOid);

		rewriteObjectId = caql_insert(pcqCtx, tup);
		/* and Update indexes (implicit) */
//.........这里部分代码省略.........

Datum
query_types(PG_FUNCTION_ARGS)
{
	FuncCallContext *funcctx;
	CmdType         MaxCmdElement = CMD_NOTHING;

	if (SRF_IS_FIRSTCALL()) {
		MemoryContext   oldcontext;
		TupleDesc       tupdesc;

		funcctx = SRF_FIRSTCALL_INIT();

		oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);

		tupdesc = CreateTemplateTupleDesc(3, false);
		TupleDescInitEntry(tupdesc, (AttrNumber) 1, "id",
				   INT4OID, -1, 0);
		TupleDescInitEntry(tupdesc, (AttrNumber) 2, "modify",
				   BOOLOID, -1, 0);
		TupleDescInitEntry(tupdesc, (AttrNumber) 3, "name",
				   TEXTOID, -1, 0);
		funcctx->tuple_desc = BlessTupleDesc(tupdesc);

		MemoryContextSwitchTo(oldcontext);
	}
	funcctx = SRF_PERCALL_SETUP();

	if (funcctx->call_cntr < MaxCmdElement + 1) {
		Datum           values[3];
		bool            nulls[3];
		HeapTuple       tuple;
		CmdType         current;

		MemSet(values, 0, sizeof(values));
		MemSet(nulls, false, sizeof(nulls));

		current = (CmdType) funcctx->call_cntr;
		values[0] = Int32GetDatum(funcctx->call_cntr);
		if (CMD_SELECT == current) {
			values[1] = BoolGetDatum(false);
		} else {
			values[1] = BoolGetDatum(true);
		}

		switch (current) {
		case CMD_UNKNOWN:
			values[2] = CStringGetDatum(cstring_to_text("UNKNOWN"));
			break;
		case CMD_SELECT:
			values[2] = CStringGetDatum(cstring_to_text("SELECT"));
			break;
		case CMD_UPDATE:
			values[2] = CStringGetDatum(cstring_to_text("UPDATE"));
			break;
		case CMD_INSERT:
			values[2] = CStringGetDatum(cstring_to_text("INSERT"));
			break;
		case CMD_DELETE:
			values[2] = CStringGetDatum(cstring_to_text("DELETE"));
			break;
		case CMD_UTILITY:
			values[2] = CStringGetDatum(cstring_to_text("UTILITY"));
			break;
		case CMD_NOTHING:
			values[2] = CStringGetDatum(cstring_to_text("NOTHING"));
			break;
		default:
			values[2] = CStringGetDatum(cstring_to_text("UNKNOWN"));
			break;
		}

		tuple = heap_form_tuple(funcctx->tuple_desc, values, nulls);
		SRF_RETURN_NEXT(funcctx, HeapTupleGetDatum(tuple));
		funcctx->call_cntr++;
	} else {
		SRF_RETURN_DONE(funcctx);
	}
}

//.........这里部分代码省略.........

			nulls[4] = false;
			values[4] = CStringGetTextDatum("<backend information not available>");

			tuple = heap_form_tuple(funcctx->tuple_desc, values, nulls);
			SRF_RETURN_NEXT(funcctx, HeapTupleGetDatum(tuple));
		}

		/* Values available to all callers */
		values[0] = ObjectIdGetDatum(beentry->st_databaseid);
		values[1] = Int32GetDatum(beentry->st_procpid);
		values[2] = ObjectIdGetDatum(beentry->st_userid);
		if (beentry->st_appname)
			values[3] = CStringGetTextDatum(beentry->st_appname);
		else
			nulls[3] = true;

		/* Values only available to same user or superuser */
		if (superuser() || beentry->st_userid == GetUserId())
		{
			SockAddr	zero_clientaddr;
			bool		waiting;

			if (*(beentry->st_activity) == '\0')
			{
				values[4] = CStringGetTextDatum("<command string not enabled>");
			}
			else
			{
				values[4] = CStringGetTextDatum(beentry->st_activity);
			}

			waiting = beentry->st_waiting != PGBE_WAITING_NONE;
			values[5] = BoolGetDatum(beentry->st_waiting);

			if (beentry->st_xact_start_timestamp != 0)
				values[6] = TimestampTzGetDatum(beentry->st_xact_start_timestamp);
			else
				nulls[6] = true;

			if (beentry->st_activity_start_timestamp != 0)
				values[7] = TimestampTzGetDatum(beentry->st_activity_start_timestamp);
			else
				nulls[7] = true;

			if (beentry->st_proc_start_timestamp != 0)
				values[8] = TimestampTzGetDatum(beentry->st_proc_start_timestamp);
			else
				nulls[8] = true;

			/* A zeroed client addr means we don't know */
			memset(&zero_clientaddr, 0, sizeof(zero_clientaddr));
			if (memcmp(&(beentry->st_clientaddr), &zero_clientaddr,
					   sizeof(zero_clientaddr)) == 0)
			{
				nulls[9] = true;
				nulls[10] = true;
			}
			else
			{
				if (beentry->st_clientaddr.addr.ss_family == AF_INET
#ifdef HAVE_IPV6
					|| beentry->st_clientaddr.addr.ss_family == AF_INET6
#endif
					)
				{

//.........这里部分代码省略.........
		 * fctx->record structure.
		 *
		 * We don't hold the partition locks, so we don't get a consistent
		 * snapshot across all buffers, but we do grab the buffer header
		 * locks, so the information of each buffer is self-consistent.
		 */
		for (i = 0; i < NBuffers; i++)
		{
			BufferDesc *bufHdr;
			uint32		buf_state;

			bufHdr = GetBufferDescriptor(i);
			/* Lock each buffer header before inspecting. */
			buf_state = LockBufHdr(bufHdr);

			fctx->record[i].bufferid = BufferDescriptorGetBuffer(bufHdr);
			fctx->record[i].relfilenode = bufHdr->tag.rnode.relNode;
			fctx->record[i].reltablespace = bufHdr->tag.rnode.spcNode;
			fctx->record[i].reldatabase = bufHdr->tag.rnode.dbNode;
			fctx->record[i].forknum = bufHdr->tag.forkNum;
			fctx->record[i].blocknum = bufHdr->tag.blockNum;
			fctx->record[i].usagecount = BUF_STATE_GET_USAGECOUNT(buf_state);
			fctx->record[i].pinning_backends = BUF_STATE_GET_REFCOUNT(buf_state);

			if (buf_state & BM_DIRTY)
				fctx->record[i].isdirty = true;
			else
				fctx->record[i].isdirty = false;

			/* Note if the buffer is valid, and has storage created */
			if ((buf_state & BM_VALID) && (buf_state & BM_TAG_VALID))
				fctx->record[i].isvalid = true;
			else
				fctx->record[i].isvalid = false;

			UnlockBufHdr(bufHdr, buf_state);
		}
	}

	funcctx = SRF_PERCALL_SETUP();

	/* Get the saved state */
	fctx = funcctx->user_fctx;

	if (funcctx->call_cntr < funcctx->max_calls)
	{
		uint32		i = funcctx->call_cntr;
		Datum		values[NUM_BUFFERCACHE_PAGES_ELEM];
		bool		nulls[NUM_BUFFERCACHE_PAGES_ELEM];

		values[0] = Int32GetDatum(fctx->record[i].bufferid);
		nulls[0] = false;

		/*
		 * Set all fields except the bufferid to null if the buffer is unused
		 * or not valid.
		 */
		if (fctx->record[i].blocknum == InvalidBlockNumber ||
			fctx->record[i].isvalid == false)
		{
			nulls[1] = true;
			nulls[2] = true;
			nulls[3] = true;
			nulls[4] = true;
			nulls[5] = true;
			nulls[6] = true;
			nulls[7] = true;
			/* unused for v1.0 callers, but the array is always long enough */
			nulls[8] = true;
		}
		else
		{
			values[1] = ObjectIdGetDatum(fctx->record[i].relfilenode);
			nulls[1] = false;
			values[2] = ObjectIdGetDatum(fctx->record[i].reltablespace);
			nulls[2] = false;
			values[3] = ObjectIdGetDatum(fctx->record[i].reldatabase);
			nulls[3] = false;
			values[4] = ObjectIdGetDatum(fctx->record[i].forknum);
			nulls[4] = false;
			values[5] = Int64GetDatum((int64) fctx->record[i].blocknum);
			nulls[5] = false;
			values[6] = BoolGetDatum(fctx->record[i].isdirty);
			nulls[6] = false;
			values[7] = Int16GetDatum(fctx->record[i].usagecount);
			nulls[7] = false;
			/* unused for v1.0 callers, but the array is always long enough */
			values[8] = Int32GetDatum(fctx->record[i].pinning_backends);
			nulls[8] = false;
		}

		/* Build and return the tuple. */
		tuple = heap_form_tuple(fctx->tupdesc, values, nulls);
		result = HeapTupleGetDatum(tuple);

		SRF_RETURN_NEXT(funcctx, result);
	}
	else
		SRF_RETURN_DONE(funcctx);
}

//.........这里部分代码省略.........
	{
		/* negator has same arg types */
		negatorId = get_other_operator(negatorName,
									   leftTypeId, rightTypeId,
									   operatorName, operatorNamespace,
									   leftTypeId, rightTypeId,
									   false);

		/* Permission check: must own other operator */
		if (OidIsValid(negatorId) &&
			!pg_oper_ownercheck(negatorId, GetUserId()))
			aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_OPER,
						   NameListToString(negatorName));
	}
	else
		negatorId = InvalidOid;

	/*
	 * set up values in the operator tuple
	 */

	for (i = 0; i < Natts_pg_operator; ++i)
	{
		values[i] = (Datum) NULL;
		replaces[i] = true;
		nulls[i] = false;
	}

	namestrcpy(&oname, operatorName);
	values[Anum_pg_operator_oprname - 1] = NameGetDatum(&oname);
	values[Anum_pg_operator_oprnamespace - 1] = ObjectIdGetDatum(operatorNamespace);
	values[Anum_pg_operator_oprowner - 1] = ObjectIdGetDatum(GetUserId());
	values[Anum_pg_operator_oprkind - 1] = CharGetDatum(leftTypeId ? (rightTypeId ? 'b' : 'r') : 'l');
	values[Anum_pg_operator_oprcanmerge - 1] = BoolGetDatum(canMerge);
	values[Anum_pg_operator_oprcanhash - 1] = BoolGetDatum(canHash);
	values[Anum_pg_operator_oprleft - 1] = ObjectIdGetDatum(leftTypeId);
	values[Anum_pg_operator_oprright - 1] = ObjectIdGetDatum(rightTypeId);
	values[Anum_pg_operator_oprresult - 1] = ObjectIdGetDatum(operResultType);
	values[Anum_pg_operator_oprcom - 1] = ObjectIdGetDatum(commutatorId);
	values[Anum_pg_operator_oprnegate - 1] = ObjectIdGetDatum(negatorId);
	values[Anum_pg_operator_oprcode - 1] = ObjectIdGetDatum(procedureId);
	values[Anum_pg_operator_oprrest - 1] = ObjectIdGetDatum(restrictionId);
	values[Anum_pg_operator_oprjoin - 1] = ObjectIdGetDatum(joinId);

	pg_operator_desc = heap_open(OperatorRelationId, RowExclusiveLock);

	/*
	 * If we are replacing an operator shell, update; else insert
	 */
	if (operatorObjectId)
	{
		tup = SearchSysCacheCopy1(OPEROID,
								  ObjectIdGetDatum(operatorObjectId));
		if (!HeapTupleIsValid(tup))
			elog(ERROR, "cache lookup failed for operator %u",
				 operatorObjectId);

		tup = heap_modify_tuple(tup,
								RelationGetDescr(pg_operator_desc),
								values,
								nulls,
								replaces);

		simple_heap_update(pg_operator_desc, &tup->t_self, tup);
	}
	else

/*
 * OperatorShellMake
 *		Make a "shell" entry for a not-yet-existing operator.
 */
static Oid
OperatorShellMake(const char *operatorName,
				  Oid operatorNamespace,
				  Oid leftTypeId,
				  Oid rightTypeId)
{
	Relation	pg_operator_desc;
	Oid			operatorObjectId;
	int			i;
	HeapTuple	tup;
	Datum		values[Natts_pg_operator];
	bool		nulls[Natts_pg_operator];
	NameData	oname;
	TupleDesc	tupDesc;

	/*
	 * validate operator name
	 */
	if (!validOperatorName(operatorName))
		ereport(ERROR,
				(errcode(ERRCODE_INVALID_NAME),
				 errmsg("\"%s\" is not a valid operator name",
						operatorName)));

	/*
	 * initialize our *nulls and *values arrays
	 */
	for (i = 0; i < Natts_pg_operator; ++i)
	{
		nulls[i] = false;
		values[i] = (Datum) NULL;		/* redundant, but safe */
	}

	/*
	 * initialize values[] with the operator name and input data types. Note
	 * that oprcode is set to InvalidOid, indicating it's a shell.
	 */
	namestrcpy(&oname, operatorName);
	values[Anum_pg_operator_oprname - 1] = NameGetDatum(&oname);
	values[Anum_pg_operator_oprnamespace - 1] = ObjectIdGetDatum(operatorNamespace);
	values[Anum_pg_operator_oprowner - 1] = ObjectIdGetDatum(GetUserId());
	values[Anum_pg_operator_oprkind - 1] = CharGetDatum(leftTypeId ? (rightTypeId ? 'b' : 'r') : 'l');
	values[Anum_pg_operator_oprcanmerge - 1] = BoolGetDatum(false);
	values[Anum_pg_operator_oprcanhash - 1] = BoolGetDatum(false);
	values[Anum_pg_operator_oprleft - 1] = ObjectIdGetDatum(leftTypeId);
	values[Anum_pg_operator_oprright - 1] = ObjectIdGetDatum(rightTypeId);
	values[Anum_pg_operator_oprresult - 1] = ObjectIdGetDatum(InvalidOid);
	values[Anum_pg_operator_oprcom - 1] = ObjectIdGetDatum(InvalidOid);
	values[Anum_pg_operator_oprnegate - 1] = ObjectIdGetDatum(InvalidOid);
	values[Anum_pg_operator_oprcode - 1] = ObjectIdGetDatum(InvalidOid);
	values[Anum_pg_operator_oprrest - 1] = ObjectIdGetDatum(InvalidOid);
	values[Anum_pg_operator_oprjoin - 1] = ObjectIdGetDatum(InvalidOid);

	/*
	 * open pg_operator
	 */
	pg_operator_desc = heap_open(OperatorRelationId, RowExclusiveLock);
	tupDesc = pg_operator_desc->rd_att;

	/*
	 * create a new operator tuple
	 */
	tup = heap_form_tuple(tupDesc, values, nulls);

	/*
	 * insert our "shell" operator tuple
	 */
	operatorObjectId = simple_heap_insert(pg_operator_desc, tup);

	CatalogUpdateIndexes(pg_operator_desc, tup);

	/* Add dependencies for the entry */
	makeOperatorDependencies(tup);

	heap_freetuple(tup);

	/* Post creation hook for new shell operator */
	InvokeObjectAccessHook(OAT_POST_CREATE,
						   OperatorRelationId, operatorObjectId, 0);

	/*
	 * Make sure the tuple is visible for subsequent lookups/updates.
	 */
	CommandCounterIncrement();

	/*
	 * close the operator relation and return the oid.
	 */
	heap_close(pg_operator_desc, RowExclusiveLock);

	return operatorObjectId;
}

//.........这里部分代码省略.........
		ColumnDef  *coldef = makeNode(ColumnDef);

		coldef->inhcount = 0;
		coldef->is_local = true;
		coldef->is_not_null = true;
		coldef->is_from_type = false;
		coldef->storage = 0;
		coldef->raw_default = NULL;
		coldef->cooked_default = NULL;
		coldef->collClause = NULL;
		coldef->collOid = InvalidOid;
		coldef->constraints = NIL;
		coldef->location = -1;

		null[i - 1] = false;

		switch (i)
		{
			case SEQ_COL_NAME:
				coldef->typeName = makeTypeNameFromOid(NAMEOID, -1);
				coldef->colname = "sequence_name";
				namestrcpy(&name, seq->sequence->relname);
				value[i - 1] = NameGetDatum(&name);
				break;
			case SEQ_COL_LASTVAL:
				coldef->typeName = makeTypeNameFromOid(INT8OID, -1);
				coldef->colname = "last_value";
				value[i - 1] = Int64GetDatumFast(new___.last_value);
				break;
			case SEQ_COL_STARTVAL:
				coldef->typeName = makeTypeNameFromOid(INT8OID, -1);
				coldef->colname = "start_value";
				value[i - 1] = Int64GetDatumFast(new___.start_value);
				break;
			case SEQ_COL_INCBY:
				coldef->typeName = makeTypeNameFromOid(INT8OID, -1);
				coldef->colname = "increment_by";
				value[i - 1] = Int64GetDatumFast(new___.increment_by);
				break;
			case SEQ_COL_MAXVALUE:
				coldef->typeName = makeTypeNameFromOid(INT8OID, -1);
				coldef->colname = "max_value";
				value[i - 1] = Int64GetDatumFast(new___.max_value);
				break;
			case SEQ_COL_MINVALUE:
				coldef->typeName = makeTypeNameFromOid(INT8OID, -1);
				coldef->colname = "min_value";
				value[i - 1] = Int64GetDatumFast(new___.min_value);
				break;
			case SEQ_COL_CACHE:
				coldef->typeName = makeTypeNameFromOid(INT8OID, -1);
				coldef->colname = "cache_value";
				value[i - 1] = Int64GetDatumFast(new___.cache_value);
				break;
			case SEQ_COL_LOG:
				coldef->typeName = makeTypeNameFromOid(INT8OID, -1);
				coldef->colname = "log_cnt";
				value[i - 1] = Int64GetDatum((int64) 0);
				break;
			case SEQ_COL_CYCLE:
				coldef->typeName = makeTypeNameFromOid(BOOLOID, -1);
				coldef->colname = "is_cycled";
				value[i - 1] = BoolGetDatum(new___.is_cycled);
				break;
			case SEQ_COL_CALLED:
				coldef->typeName = makeTypeNameFromOid(BOOLOID, -1);
				coldef->colname = "is_called";
				value[i - 1] = BoolGetDatum(false);
				break;
		}
		stmt->tableElts = lappend(stmt->tableElts, coldef);
	}

	stmt->relation = seq->sequence;
	stmt->inhRelations = NIL;
	stmt->constraints = NIL;
	stmt->options = NIL;
	stmt->oncommit = ONCOMMIT_NOOP;
	stmt->tablespacename = NULL;
	stmt->if_not_exists = seq->if_not_exists;

	address = DefineRelation(stmt, RELKIND_SEQUENCE, seq->ownerId, NULL);
	seqoid = address.objectId;
	Assert(seqoid != InvalidOid);

	rel = heap_open(seqoid, AccessExclusiveLock);
	tupDesc = RelationGetDescr(rel);

	/* now initialize the sequence's data */
	tuple = heap_form_tuple(tupDesc, value, null);
	fill_seq_with_data(rel, tuple);

	/* process OWNED BY if given */
	if (owned_by)
		process_owned_by(rel, owned_by);

	heap_close(rel, NoLock);

	return address;
}