104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/**
|
|
* 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.
|
|
*/
|
|
|
|
#define USING_LOG_PREFIX SQL_ENG
|
|
#include "sql/engine/expr/ob_expr_uid.h"
|
|
#include "sql/engine/ob_physical_plan_ctx.h"
|
|
#include "lib/mysqlclient/ob_mysql_result.h"
|
|
#include "lib/mysqlclient/ob_mysql_transaction.h"
|
|
#include "lib/string/ob_sql_string.h"
|
|
#include "lib/mysqlclient/ob_mysql_proxy.h"
|
|
#include "lib/oblog/ob_log_module.h"
|
|
#include "sql/session/ob_sql_session_info.h"
|
|
#include "share/schema/ob_schema_getter_guard.h"
|
|
#include "sql/engine/ob_exec_context.h"
|
|
|
|
using namespace oceanbase::common;
|
|
using namespace oceanbase::sql;
|
|
|
|
namespace oceanbase {
|
|
namespace sql {
|
|
|
|
ObExprUid::ObExprUid(ObIAllocator& alloc) : ObFuncExprOperator(alloc, T_FUN_SYS_UID, N_UID, 0, NOT_ROW_DIMENSION)
|
|
{}
|
|
|
|
ObExprUid::~ObExprUid()
|
|
{}
|
|
|
|
int ObExprUid::calc_result_type0(ObExprResType& type, ObExprTypeCtx& type_ctx) const
|
|
{
|
|
UNUSED(type_ctx);
|
|
if (share::is_oracle_mode()) {
|
|
type.set_number();
|
|
type.set_precision(PRECISION_UNKNOWN_YET);
|
|
type.set_scale(ORA_NUMBER_SCALE_UNKNOWN_YET);
|
|
} else {
|
|
type.set_uint64();
|
|
}
|
|
return OB_SUCCESS;
|
|
}
|
|
|
|
int ObExprUid::calc_result0(ObObj& result, ObExprCtx& expr_ctx) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
const ObSQLSessionInfo* session_info = NULL;
|
|
if (OB_ISNULL(session_info = expr_ctx.my_session_)) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("session info is null", K(ret));
|
|
} else if (!share::is_oracle_mode()) {
|
|
ret = OB_NOT_SUPPORTED;
|
|
LOG_WARN("UID function is supported by Oracle mode", K(ret), K(share::is_oracle_mode()));
|
|
} else {
|
|
const uint64_t sess_uid = session_info->get_user_id();
|
|
// result.set_uint64_value(sess_uid);
|
|
number::ObNumber num;
|
|
if (OB_FAIL(num.from(sess_uid, *(expr_ctx.calc_buf_)))) {
|
|
LOG_WARN("convert int to number failed", K(ret), K(sess_uid));
|
|
} else {
|
|
result.set_number(num);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprUid::eval_uid(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
UNUSED(expr);
|
|
const ObBasicSessionInfo* session_info = NULL;
|
|
if (OB_ISNULL(session_info = ctx.exec_ctx_.get_my_session())) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("session info is null", K(ret));
|
|
} else {
|
|
char local_buff[number::ObNumber::MAX_BYTE_LEN];
|
|
ObDataBuffer local_alloc(local_buff, number::ObNumber::MAX_BYTE_LEN);
|
|
number::ObNumber num;
|
|
if (OB_FAIL(num.from(session_info->get_user_id(), local_alloc))) {
|
|
LOG_WARN("failed to convert int to number", K(ret));
|
|
} else {
|
|
expr_datum.set_number(num);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprUid::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_ = ObExprUid::eval_uid;
|
|
return OB_SUCCESS;
|
|
}
|
|
|
|
} // namespace sql
|
|
} // namespace oceanbase
|