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oceanbase-admin
2021-05-31 22:56:52 +08:00
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src/sql/engine/expr/ob_expr_mysql_port.cpp Normal file
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/**
* Copyright (c) 2021 OceanBase
* OceanBase CE is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PubL v2 for more details.
*/
#include "sql/engine/expr/ob_expr_mysql_port.h"
#include "share/config/ob_server_config.h"
#include "observer/ob_server_struct.h"
using namespace oceanbase::common;
using namespace oceanbase::sql;
namespace oceanbase {
namespace sql {
ObExprMySQLPort::ObExprMySQLPort(ObIAllocator& alloc)
: ObFuncExprOperator(alloc, T_FUN_SYS_MYSQL_PORT, N_MYSQL_PORT, 0, NOT_ROW_DIMENSION)
{}
ObExprMySQLPort::~ObExprMySQLPort()
{}
int ObExprMySQLPort::calc_result_type0(ObExprResType& type, ObExprTypeCtx& type_ctx) const
{
int ret = OB_SUCCESS;
UNUSED(type_ctx);
type.set_int();
type.set_scale(ObAccuracy::DDL_DEFAULT_ACCURACY[ObIntType].scale_);
type.set_precision(ObAccuracy::DDL_DEFAULT_ACCURACY[ObIntType].precision_);
return ret;
}
int ObExprMySQLPort::calc_result0(ObObj& result, ObExprCtx& expr_ctx) const
{
int ret = OB_SUCCESS;
UNUSED(expr_ctx);
common::ObServerConfig* config = GCTX.config_;
if (OB_UNLIKELY(NULL == config)) {
ret = OB_ERR_UNEXPECTED;
SQL_ENG_LOG(WARN, "server config is null, get mysql port failed", K(ret));
} else {
result.set_int(config->mysql_port);
}
return ret;
}
int ObExprMySQLPort::eval_mysql_port(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
{
int ret = OB_SUCCESS;
UNUSED(expr);
UNUSED(ctx);
common::ObServerConfig* config = GCTX.config_;
if (OB_ISNULL(config)) {
ret = OB_ERR_UNEXPECTED;
SQL_ENG_LOG(WARN, "server config is null, get mysql port failed", K(ret));
} else {
expr_datum.set_int(config->mysql_port);
}
return ret;
}
int ObExprMySQLPort::cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
{
UNUSED(raw_expr);
UNUSED(op_cg_ctx);
rt_expr.eval_func_ = ObExprMySQLPort::eval_mysql_port;
return OB_SUCCESS;
}
} // namespace sql
} // namespace oceanbase