C++ (Cpp) OperatorIsVisible Examples

Example #1

File: regproc.c Project: bwright/postgres

/*
 * format_operator		- converts operator OID to "opr_name(args)"
 *
 * This exports the useful functionality of regoperatorout for use
 * in other backend modules.  The result is a palloc'd string.
 */
char *
format_operator(Oid operator_oid)
{
	char	   *result;
	HeapTuple	opertup;

	opertup = SearchSysCache1(OPEROID, ObjectIdGetDatum(operator_oid));

	if (HeapTupleIsValid(opertup))
	{
		Form_pg_operator operform = (Form_pg_operator) GETSTRUCT(opertup);
		char	   *oprname = NameStr(operform->oprname);
		char	   *nspname;
		StringInfoData buf;

		/* XXX no support here for bootstrap mode */

		initStringInfo(&buf);

		/*
		 * Would this oper be found (given the right args) by regoperatorin?
		 * If not, we need to qualify it.
		 */
		if (!OperatorIsVisible(operator_oid))
		{
			nspname = get_namespace_name(operform->oprnamespace);
			appendStringInfo(&buf, "%s.",
							 quote_identifier(nspname));
		}

		appendStringInfo(&buf, "%s(", oprname);

		if (operform->oprleft)
			appendStringInfo(&buf, "%s,",
							 format_type_be(operform->oprleft));
		else
			appendStringInfo(&buf, "NONE,");

		if (operform->oprright)
			appendStringInfo(&buf, "%s)",
							 format_type_be(operform->oprright));
		else
			appendStringInfo(&buf, "NONE)");

		result = buf.data;

		ReleaseSysCache(opertup);
	}
	else
	{
		/*
		 * If OID doesn't match any pg_operator entry, return it numerically
		 */
		result = (char *) palloc(NAMEDATALEN);
		snprintf(result, NAMEDATALEN, "%u", operator_oid);
	}

	return result;
}

Example #2

File: regproc.c Project: BALDELab/incubator-hawq

/*
 * format_operator		- converts operator OID to "opr_name(args)"
 *
 * This exports the useful functionality of regoperatorout for use
 * in other backend modules.  The result is a palloc'd string.
 */
char *
format_operator(Oid operator_oid)
{
	char	   *result;
	HeapTuple	opertup;
	cqContext  *pcqCtx;

	pcqCtx = caql_beginscan(
			NULL,
			cql("SELECT * FROM pg_operator "
				" WHERE oid = :1 ",
				ObjectIdGetDatum(operator_oid)));

	opertup = caql_getnext(pcqCtx);

	/* XXX XXX select oprname, oprnamespace from pg_operator */
	if (HeapTupleIsValid(opertup))
	{
		Form_pg_operator operform = (Form_pg_operator) GETSTRUCT(opertup);
		char	   *oprname = NameStr(operform->oprname);
		char	   *nspname;
		StringInfoData buf;

		/* XXX no support here for bootstrap mode */

		initStringInfo(&buf);

		/*
		 * Would this oper be found (given the right args) by regoperatorin?
		 * If not, we need to qualify it.
		 */
		if (!OperatorIsVisible(operator_oid))
		{
			nspname = get_namespace_name(operform->oprnamespace);
			appendStringInfo(&buf, "%s.",
							 quote_identifier(nspname));
		}

		appendStringInfo(&buf, "%s(", oprname);

		if (operform->oprleft)
			appendStringInfo(&buf, "%s,",
							 format_type_be(operform->oprleft));
		else
			appendStringInfo(&buf, "NONE,");

		if (operform->oprright)
			appendStringInfo(&buf, "%s)",
							 format_type_be(operform->oprright));
		else
			appendStringInfo(&buf, "NONE)");

		result = buf.data;
	}
	else
	{
		/*
		 * If OID doesn't match any pg_operator entry, return it numerically
		 */
		result = (char *) palloc(NAMEDATALEN);
		snprintf(result, NAMEDATALEN, "%u", operator_oid);
	}

	caql_endscan(pcqCtx);

	return result;
}