/**
 * 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_RESV
#include "sql/resolver/ob_schema_checker.h"
#include "lib/string/ob_string.h"
#include "lib/thread_local/ob_tsi_factory.h"
#include "lib/oblog/ob_log.h"
#include "share/schema/ob_schema_getter_guard.h"
#include "share/schema/ob_column_schema.h"
#include "share/schema/ob_table_schema.h"
#include "share/schema/ob_schema_struct.h"
#include "share/schema/ob_schema_mgr.h"
#include "share/schema/ob_udf.h"
#include "share/schema/ob_synonym_mgr.h"
#include "sql/privilege_check/ob_ora_priv_check.h"
#include "sql/ob_sql_mock_schema_utils.h"
#include "sql/ob_sql_context.h"
#include "sql/resolver/ob_resolver_define.h"
#include "observer/virtual_table/ob_table_columns.h"
#include "common/ob_smart_call.h"

using namespace oceanbase::sql;
using namespace oceanbase::common;
using namespace oceanbase::share::schema;
using oceanbase::share::schema::ObColumnSchemaV2;
using oceanbase::share::schema::ObDatabaseSchema;
using oceanbase::share::schema::ObTableSchema;
using oceanbase::share::schema::ObTenantSchema;

namespace oceanbase {
namespace sql {
ObSchemaChecker::ObSchemaChecker() : is_inited_(false), schema_mgr_(NULL), sql_schema_mgr_(NULL), flag_(0)
{}

ObSchemaChecker::~ObSchemaChecker()
{
  schema_mgr_ = NULL;
  sql_schema_mgr_ = NULL;
}

int ObSchemaChecker::init(ObSchemaGetterGuard& schema_mgr, uint64_t session_id)
{
  int ret = OB_SUCCESS;
  if (is_inited_) {
    ret = OB_INIT_TWICE;
    LOG_WARN("inited twice", K(ret));
  } else {
    schema_mgr_ = &schema_mgr;
    is_inited_ = true;
    flag_ = 0;
    schema_mgr.set_session_id(session_id);
    if (OB_INVALID_ID != session_id) {
      LOG_DEBUG("ObSchemaChecker init with valid session id", K(session_id));
    }
  }
  return ret;
}

int ObSchemaChecker::init(ObSqlSchemaGuard& sql_schema_mgr, uint64_t session_id)
{
  int ret = OB_SUCCESS;
  OV(OB_NOT_NULL(sql_schema_mgr.get_schema_guard()));
  OZ(init(*sql_schema_mgr.get_schema_guard(), session_id));
  OX(sql_schema_mgr_ = &sql_schema_mgr);
  return ret;
}

int ObSchemaChecker::set_lbca_op()
{
  int ret = OB_SUCCESS;
  flag_ = LBCA_OP_FLAG;
  return ret;
}

bool ObSchemaChecker::is_lbca_op()
{
  return flag_ == LBCA_OP_FLAG;
}

int ObSchemaChecker::check_ora_priv(const uint64_t tenant_id, const uint64_t uid,
    const share::schema::ObStmtOraNeedPrivs& stmt_need_privs, const ObIArray<uint64_t>& role_id_array) const
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_FAIL(schema_mgr_->check_ora_priv(tenant_id, uid, stmt_need_privs, role_id_array))) {
    LOG_WARN("failed to check_priv", K(tenant_id), K(uid), K(stmt_need_privs), K(ret));
  } else {
  }
  return ret;
}

int ObSchemaChecker::check_priv(
    const share::schema::ObSessionPrivInfo& session_priv, const share::schema::ObStmtNeedPrivs& stmt_need_privs) const
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(!session_priv.is_valid())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("session_priv is invalid", K(session_priv), K(ret));
  } else if (OB_FAIL(schema_mgr_->check_priv(session_priv, stmt_need_privs))) {
    LOG_WARN("failed to check_priv", K(session_priv), K(stmt_need_privs), K(ret));
  } else {
  }
  return ret;
}

int ObSchemaChecker::check_priv_or(
    const share::schema::ObSessionPrivInfo& session_priv, const share::schema::ObStmtNeedPrivs& stmt_need_privs)
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(!session_priv.is_valid())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("session_priv is invalid", K(session_priv), K(ret));
  } else if (OB_FAIL(schema_mgr_->check_priv_or(session_priv, stmt_need_privs))) {
    LOG_WARN("failed to check_priv_or", K(session_priv), K(stmt_need_privs), K(ret));
  } else {
  }
  return ret;
}

int ObSchemaChecker::check_db_access(share::schema::ObSessionPrivInfo& s_priv, const ObString& database_name) const
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(!s_priv.is_valid() || database_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(s_priv), K(database_name), K(ret));
  } else if (OB_FAIL(schema_mgr_->check_db_access(s_priv, database_name))) {
    LOG_WARN("failed to check_db_access", K(s_priv), K(database_name), K(ret));
  } else {
  }
  return ret;
}

int ObSchemaChecker::check_table_show(
    const share::schema::ObSessionPrivInfo& s_priv, const ObString& db, const ObString& table, bool& allow_show) const
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(!s_priv.is_valid() || db.empty() || table.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(s_priv), K(db), K(table), K(ret));
  } else if (OB_FAIL(schema_mgr_->check_table_show(s_priv, db, table, allow_show))) {
    LOG_WARN("failed to check_table_show", K(s_priv), K(db), K(table), K(ret));
  } else {
  }
  return ret;
}

int ObSchemaChecker::check_column_exists(const uint64_t table_id, const ObString& column_name, bool& is_exist)
{
  int ret = OB_SUCCESS;

  is_exist = false;
  const ObColumnSchemaV2* column_schema = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id || column_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(table_id), K(column_name), K(ret));
  } else {
    if (share::is_oracle_mode() && 0 == column_name.case_compare(OB_HIDDEN_LOGICAL_ROWID_COLUMN_NAME)) {
      const ObTableSchema* table_schema = NULL;
      if (OB_FAIL(get_table_schema_inner(table_id, table_schema))) {
        LOG_WARN("failed to get table schema", K(ret));
      } else if (OB_ISNULL(table_schema)) {
        ret = OB_ERR_UNEXPECTED;
        LOG_WARN("unexpected null table schema", K(ret));
      } else if (OB_FAIL(ObSQLMockSchemaUtils::add_mock_table(table_id))) {
        LOG_WARN("failed to add mock table id", K(ret));
      }
    }
    if (OB_FAIL(ret)) {
      // do nothing
    } else if (OB_FAIL(get_column_schema_inner(table_id, column_name, column_schema))) {
      LOG_WARN("get column schema failed", K(table_id), K(column_name), K(ret));
    }
    if (NULL == column_schema) {
      for (int64_t i = 0; OB_SUCC(ret) && i < tmp_cte_schemas_.count(); ++i) {
        if (tmp_cte_schemas_.at(i)->get_table_id() == table_id) {
          column_schema = tmp_cte_schemas_.at(i)->get_column_schema(column_name);
          break;
        }
      }
    }
    if (NULL == column_schema) {
      is_exist = false;
    } else {
      is_exist = true;
    }
  }

  return ret;
}

int ObSchemaChecker::check_column_exists(uint64_t table_id, uint64_t column_id, bool& is_exist)
{
  int ret = OB_SUCCESS;

  is_exist = false;
  const ObColumnSchemaV2* column_schema = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id || OB_INVALID_ID == column_id)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(table_id), K(column_id), K(ret));
  } else {
    if (OB_FAIL(get_column_schema_inner(table_id, column_id, column_schema))) {
      LOG_WARN("get column schema failed", K(table_id), K(column_id), K(ret));
    }
    if (NULL == column_schema) {
      for (int64_t i = 0; OB_SUCC(ret) && i < tmp_cte_schemas_.count(); ++i) {
        if (tmp_cte_schemas_.at(i)->get_table_id() == table_id) {
          column_schema = tmp_cte_schemas_.at(i)->get_column_schema(column_id);
          break;
        }
      }
    }
    if (NULL == column_schema) {
      is_exist = false;
    } else {
      is_exist = true;
    }
  }

  return ret;
}

int ObSchemaChecker::check_routine_show(
    const share::schema::ObSessionPrivInfo& s_priv, const ObString& db, const ObString& routine, bool& allow_show) const
{
  int ret = OB_SUCCESS;
  allow_show = true;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(!s_priv.is_valid() || db.empty() || routine.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(s_priv), K(db), K(routine), K(ret));
    //  } else if (OB_FAIL(schema_mgr_->check_routine_show(s_priv, db, routine, allow_show))) { //TODO:
    //    LOG_WARN("failed to check_table_show", K(s_priv), K(db), K(routine), K(ret));
  } else {
  }
  return ret;
}

int ObSchemaChecker::check_table_or_index_exists(
    const uint64_t tenant_id, const uint64_t database_id, const ObString& table_name, bool& is_exist)
{
  int ret = OB_SUCCESS;
  bool is_index_table = false;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || OB_INVALID_ID == database_id || table_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(database_id), K(table_name), K(ret));
  } else if (OB_FAIL(check_table_exists(tenant_id, database_id, table_name, is_index_table, is_exist))) {
    LOG_WARN("check table exist failed", K(tenant_id), K(database_id), K(table_name), K(ret));
  } else if (!is_exist) {
    is_index_table = true;
    if (OB_FAIL(check_table_exists(tenant_id, database_id, table_name, is_index_table, is_exist))) {
      LOG_WARN("check index exist failed", K(tenant_id), K(database_id), K(table_name), K(ret));
    }
  }
  return ret;
}

int ObSchemaChecker::check_table_exists(const uint64_t tenant_id, const uint64_t database_id,
    const ObString& table_name, const bool is_index_table, bool& is_exist)
{
  int ret = OB_SUCCESS;

  is_exist = false;
  uint64_t table_id = OB_INVALID_ID;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || OB_INVALID_ID == database_id || table_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(database_id), K(table_name), K(ret));
  } else {
    if (OB_FAIL(schema_mgr_->get_table_id(
            tenant_id, database_id, table_name, is_index_table, ObSchemaGetterGuard::ALL_TYPES, table_id))) {

      LOG_WARN("get table id failed", K(ret), K(tenant_id), K(database_id), K(table_name), K(is_index_table));
    } else {
      is_exist = (OB_INVALID_ID != table_id);
      if (is_exist == false) {
        bool exist = false;
        if (OB_FAIL(find_fake_cte_schema(table_name, exist))) {
          LOG_WARN("can not find the table", K(ret), K(tenant_id), K(database_id), K(table_name), K(is_index_table));
        } else {
          is_exist = exist;
        }
      }
    }
  }
  return ret;
}

int ObSchemaChecker::check_table_exists(const uint64_t tenant_id, const ObString& database_name,
    const ObString& table_name, const bool is_index_table, bool& is_exist)
{
  int ret = OB_SUCCESS;

  is_exist = false;
  uint64_t table_id = OB_INVALID_ID;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || database_name.empty() || table_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(database_name), K(table_name), K(ret));
  } else {
    if (OB_FAIL(schema_mgr_->get_table_id(
            tenant_id, database_name, table_name, is_index_table, ObSchemaGetterGuard::ALL_TYPES, table_id))) {
      LOG_WARN("fail to check table exist", K(tenant_id), K(database_name), K(table_name), K(is_index_table), K(ret));
    } else {
      is_exist = (OB_INVALID_ID != table_id);
    }
  }
  return ret;
}

int ObSchemaChecker::get_database_id(const uint64_t tenant_id, const ObString& database_name, uint64_t& database_id)
{
  int ret = OB_SUCCESS;
  database_id = OB_INVALID_ID;

  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || database_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(database_name), K(ret));
  } else {
    if (OB_FAIL(schema_mgr_->get_database_id(tenant_id, database_name, database_id))) {
      LOG_WARN("fail to get database id", K(tenant_id), K(database_name), K(database_id), K(ret));
    } else if (OB_INVALID_ID == database_id) {
      ret = OB_ERR_BAD_DATABASE;
      LOG_WARN("database is not exist", K(tenant_id), K(database_name), K(ret));
    }
  }
  return ret;
}

int ObSchemaChecker::get_column_schema(
    const uint64_t table_id, const ObString& column_name, const ObColumnSchemaV2*& column_schema, bool get_hidden)
{
  int ret = OB_SUCCESS;
  column_schema = NULL;

  const ObColumnSchemaV2* column = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id || column_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(table_id), K(column_name), K(ret));
  } else {
    if (OB_FAIL(get_column_schema_inner(table_id, column_name, column))) {
      LOG_WARN("get column schema failed", K(table_id), K(column_name), K(ret));
    } else if (NULL == column) {
      for (int64_t i = 0; i < tmp_cte_schemas_.count(); i++) {
        if (tmp_cte_schemas_.at(i)->get_table_id() == table_id) {
          column = tmp_cte_schemas_.at(i)->get_column_schema(column_name);
          break;
        }
      }
      if (NULL == column) {
        ret = OB_ERR_BAD_FIELD_ERROR;
        LOG_WARN("column is not exist", K(table_id), K(column_name), K(ret));
      } else {
        column_schema = column;
        LOG_DEBUG("find a cte fake column", K(column_name));
      }
    } else if (!get_hidden && column->is_hidden()) {
      ret = OB_ERR_BAD_FIELD_ERROR;
      LOG_INFO("do not get hidden column", K(table_id), K(column_name), K(ret));
    } else {
      column_schema = column;
    }
  }

  return ret;
}

int ObSchemaChecker::get_column_schema(
    const uint64_t table_id, const uint64_t column_id, const ObColumnSchemaV2*& column_schema, const bool get_hidden)
{
  int ret = OB_SUCCESS;
  column_schema = NULL;

  const ObColumnSchemaV2* column = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id || OB_INVALID_ID == column_id)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(table_id), K(column_id), K(ret));
  } else {
    if (OB_HIDDEN_LOGICAL_ROWID_COLUMN_ID == column_id) {
      if (OB_FAIL(ObSQLMockSchemaUtils::add_mock_table(table_id))) {
        LOG_WARN("failed to add mock table", K(ret));
      }
    }
    if (OB_FAIL(ret)) {
      // do nothing
    } else if (OB_FAIL(get_column_schema_inner(table_id, column_id, column))) {
      LOG_WARN("get column schema failed", K(table_id), K(column_id), K(ret));
    } else if (NULL == column) {
      ret = OB_ERR_BAD_FIELD_ERROR;
      LOG_WARN("column is not exist", K(table_id), K(column_id), K(ret));
    } else if (!get_hidden && column->is_hidden()) {
      ret = OB_ERR_BAD_FIELD_ERROR;
      LOG_INFO("do not get hidden column", K(table_id), K(column_id), K(ret));
    } else {
      column_schema = column;
    }
  }

  return ret;
}

int ObSchemaChecker::get_user_id(
    const uint64_t tenant_id, const ObString& user_name, const ObString& host_name, uint64_t& user_id)
{
  int ret = OB_SUCCESS;
  user_id = OB_INVALID_ID;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || user_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(user_name), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_user_id(tenant_id, user_name, host_name, user_id))) {
    LOG_WARN("get user id failed", K(tenant_id), K(user_name), K(host_name), K(ret));
  } else if (OB_INVALID_ID == user_id) {
    ret = OB_USER_NOT_EXIST;
    LOG_WARN("user is not exist", K(tenant_id), K(user_name), K(host_name), K(ret));
  }
  return ret;
}

int ObSchemaChecker::get_user_info(const uint64_t user_id, const ObUserInfo*& user_info)
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_INVALID_ID == user_id) {
    ret = OB_USER_NOT_EXIST;
    LOG_WARN("user is not exist", K(user_id), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_user_info(user_id, user_info))) {
    LOG_WARN("user is not exist", K(user_id), K(ret));
  } else if (NULL == user_info) {
    ret = OB_USER_NOT_EXIST;
    LOG_WARN("user is not exist", K(user_id), K(ret));
  }

  return ret;
}

int ObSchemaChecker::get_user_info(
    const uint64_t tenant_id, const ObString& user_name, const ObString& host_name, const ObUserInfo*& user_info)
{
  int ret = OB_SUCCESS;
  uint64_t user_id = OB_INVALID_ID;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || user_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(user_name), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_user_id(tenant_id, user_name, host_name, user_id))) {
    LOG_WARN("get user id failed", K(tenant_id), K(user_name), K(host_name), K(ret));
  } else if (OB_FAIL(get_user_info(user_id, user_info))) {
    LOG_WARN("user is not exist", K(user_id), K(user_name), K(host_name), K(ret));
  } else if (NULL == user_info) {
    ret = OB_USER_NOT_EXIST;
    LOG_WARN("user is not exist", K(tenant_id), K(user_name), K(host_name), K(ret));
  }

  return ret;
}

int ObSchemaChecker::check_table_exists_with_synonym(const uint64_t tenant_id, const ObString& tbl_db_name,
    const ObString& tbl_name, bool is_index_table, bool& has_synonym, bool& table_exist)
{
  int ret = OB_SUCCESS;
  uint64_t tbl_db_id = OB_INVALID_ID;
  uint64_t obj_db_id = OB_INVALID_ID;
  ObSEArray<uint64_t, 8> syn_id_arr;
  ObString obj_name;
  table_exist = false;
  has_synonym = false;
  if (OB_FAIL(check_table_exists(tenant_id, tbl_db_name, tbl_name, is_index_table, table_exist))) {
    LOG_WARN("check_table_exists failed", K(tenant_id), K(tbl_db_name), K(tbl_name), K(is_index_table));
  } else if (false == table_exist) {
    // try again with synonym
    if (OB_FAIL(get_database_id(tenant_id, tbl_db_name, tbl_db_id))) {
      LOG_WARN("get database id failed", K(ret), K(tenant_id), K(tbl_db_name), K(tbl_name));
    } else if (OB_FAIL(get_obj_info_recursively_with_synonym(
                   tenant_id, tbl_db_id, tbl_name, obj_db_id, obj_name, syn_id_arr))) {
      if (OB_SYNONYM_NOT_EXIST == ret) {
        table_exist = false;
        ret = OB_SUCCESS;
        LOG_DEBUG("obj is not a synonym", K(tbl_name), K(ret));
      } else {
        LOG_WARN("get real obj represented by synonym failed",
            K(ret),
            K(tenant_id),
            K(tbl_db_name),
            K(tbl_db_id),
            K(tbl_name));
      }
    } else {
      has_synonym = true;
      const ObDatabaseSchema* db_schema = NULL;
      if (OB_FAIL(check_table_exists(tenant_id, obj_db_id, obj_name, is_index_table, table_exist))) {
        LOG_WARN("get_table_schema failed", K(ret), K(tenant_id), K(tbl_db_name), K(tbl_db_id), K(tbl_name));
      } else if (false == table_exist) {
        ret = OB_ERR_SYNONYM_TRANSLATION_INVALID;
        LOG_WARN("object is synonym, but real object not exist",
            K(ret),
            K(tenant_id),
            K(tbl_db_name),
            K(tbl_name),
            K(obj_name));
        LOG_USER_ERROR(OB_ERR_SYNONYM_TRANSLATION_INVALID, to_cstring(tbl_name));
      }
    }
  } else {
    // table found. do nothing
  }

  return ret;
}

int ObSchemaChecker::get_table_schema_with_synonym(const uint64_t tenant_id, const ObString& tbl_db_name,
    const ObString& tbl_name, bool is_index_table, bool& has_synonym, ObString& new_db_name, ObString& new_tbl_name,
    const share::schema::ObTableSchema*& tbl_schema)
{
  int ret = OB_SUCCESS;
  uint64_t tbl_db_id = OB_INVALID_ID;
  uint64_t obj_db_id = OB_INVALID_ID;
  ObString obj_name;
  bool syn_exist = false;
  new_db_name.reset();
  new_tbl_name.reset();
  has_synonym = false;
  tbl_schema = NULL;
  ObSEArray<uint64_t, 8> syn_id_arr;

  if (OB_FAIL(get_table_schema(tenant_id, tbl_db_name, tbl_name, is_index_table, tbl_schema))) {
    if (OB_TABLE_NOT_EXIST == ret) {
      // try with synonym
      if (OB_FAIL(get_database_id(tenant_id, tbl_db_name, tbl_db_id))) {
        LOG_WARN("get database id failed", K(ret), K(tenant_id), K(tbl_db_name));
      } else if (OB_FAIL(get_obj_info_recursively_with_synonym(
                     tenant_id, tbl_db_id, tbl_name, obj_db_id, obj_name, syn_id_arr))) {
        if (OB_SYNONYM_NOT_EXIST == ret) {
          ret = OB_TABLE_NOT_EXIST;
          LOG_DEBUG("obj is not a synonym", K(tbl_name), K(ret));
        } else {
          LOG_WARN("get real obj represented by synonym failed",
              K(ret),
              K(tenant_id),
              K(tbl_db_name),
              K(tbl_db_id),
              K(tbl_name));
        }
      } else {
        const ObDatabaseSchema* db_schema = NULL;
        has_synonym = true;
        if (OB_FAIL(schema_mgr_->get_table_schema(tenant_id, obj_db_id, obj_name, is_index_table, tbl_schema))) {
          LOG_WARN("get_table_schema failed", K(ret), K(tenant_id), K(obj_db_id), K(tbl_db_id), K(tbl_name));
        } else if (OB_ISNULL(tbl_schema)) {
          ret = OB_ERR_SYNONYM_TRANSLATION_INVALID;
          LOG_WARN("object is synonym, but real object not exist",
              K(ret),
              K(tenant_id),
              K(tbl_db_name),
              K(tbl_name),
              K(obj_name));
          LOG_USER_ERROR(OB_ERR_SYNONYM_TRANSLATION_INVALID, to_cstring(tbl_name));
        } else if (OB_FAIL(get_database_schema(tenant_id, obj_db_id, db_schema))) {
          LOG_WARN("get database schema failed", K(ret), K(tenant_id), K(obj_db_id));
        } else if (OB_ISNULL(db_schema)) {
          ret = OB_ERR_UNEXPECTED;
          LOG_WARN("get database schema failed", K(ret), K(tenant_id), K(obj_db_id));
        } else {
          new_db_name = db_schema->get_database_name();
          new_tbl_name = obj_name;
        }
      }
    } else {
      LOG_WARN("get_table_schema failed", K(ret), K(tenant_id), K(tbl_db_name), K(tbl_db_id), K(tbl_name));
    }
  } else {
    has_synonym = false;
  }

  return ret;
}

int ObSchemaChecker::get_simple_table_schema(const uint64_t tenant_id, const uint64_t& db_id,
    const ObString& table_name, const bool is_index_table, const ObSimpleTableSchemaV2*& simple_table_schema)
{
  int ret = OB_SUCCESS;
  simple_table_schema = NULL;

  const ObSimpleTableSchemaV2* table = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || db_id == OB_INVALID_ID || table_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(db_id), K(table_name), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_simple_table_schema(tenant_id, db_id, table_name, is_index_table, table))) {
    LOG_WARN("get table schema failed", K(tenant_id), K(db_id), K(table_name), K(ret));
  } else if (NULL == table) {
    ret = OB_TABLE_NOT_EXIST;
    LOG_WARN("table is not exist", K(tenant_id), K(db_id), K(table_name), K(ret));
  } else {
    simple_table_schema = table;
  }
  return ret;
}

int ObSchemaChecker::get_table_schema(const uint64_t tenant_id, const ObString& database_name,
    const ObString& table_name, const bool is_index_table, const ObTableSchema*& table_schema)
{
  int ret = OB_SUCCESS;
  table_schema = NULL;

  const ObTableSchema* table = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || database_name.empty() || table_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(database_name), K(table_name), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_table_schema(tenant_id, database_name, table_name, is_index_table, table))) {
    LOG_WARN("get table schema failed", K(tenant_id), K(database_name), K(table_name), K(ret));
  } else if (NULL == table) {
    ret = OB_TABLE_NOT_EXIST;
    LOG_WARN("table is not exist", K(tenant_id), K(database_name), K(table_name), K(ret));
  } else if (table->is_dropped_schema() || (false == table->is_tmp_table() && 0 != table->get_session_id() &&
                                               OB_INVALID_ID != schema_mgr_->get_session_id())) {
    ret = OB_TABLE_NOT_EXIST;
    LOG_USER_ERROR(OB_TABLE_NOT_EXIST, to_cstring(database_name), to_cstring(table_name));
  } else {
    table_schema = table;
  }
  return ret;
}

// Attention: only used in SQL Layer.
int ObSchemaChecker::get_table_schema(const uint64_t tenant_id, const uint64_t database_id, const ObString& table_name,
    const bool is_index_table, const bool cte_table_fisrt, const ObTableSchema*& table_schema)
{
  int ret = OB_SUCCESS;
  table_schema = NULL;

  const ObTableSchema* table = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || OB_INVALID_ID == database_id || table_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(database_id), K(table_name), K(ret));
    ret = OB_INVALID_ARGUMENT;
  } else if (OB_FAIL(schema_mgr_->get_table_schema(tenant_id, database_id, table_name, is_index_table, table))) {
    LOG_WARN("get table schema failed", K(tenant_id), K(database_id), K(table_name), K(is_index_table), K(ret));
  } else {
    // If CTE table has same name with a basic table, cte table has high priority.
    if (cte_table_fisrt) {
      for (int64_t i = 0; i < tmp_cte_schemas_.count(); i++) {
        if (tmp_cte_schemas_.at(i)->get_table_name_str() == table_name) {
          table = tmp_cte_schemas_.at(i);
          break;
        }
      }
    }
    if (NULL == table) {
      ret = OB_TABLE_NOT_EXIST;
      LOG_WARN("table is not exist", K(tenant_id), K(database_id), K(table_name), K(ret));
    } else if (table->is_dropped_schema() || (false == table->is_tmp_table() && 0 != table->get_session_id() &&
                                                 OB_INVALID_ID != schema_mgr_->get_session_id() &&
                                                 table->get_session_id() != schema_mgr_->get_session_id())) {
      const ObDatabaseSchema* db_schema = NULL;
      if (OB_FAIL(schema_mgr_->get_database_schema(tenant_id, database_id, db_schema))) {
        LOG_WARN("get database schema failed", K(tenant_id), K(database_id), K(ret));
      } else if (NULL == db_schema) {
        ret = OB_ERR_BAD_DATABASE;
        LOG_WARN("fail to get database schema", K(tenant_id), K(database_id), K(ret));
      } else {
        ret = OB_TABLE_NOT_EXIST;
        LOG_USER_ERROR(OB_TABLE_NOT_EXIST, db_schema->get_database_name(), to_cstring(table_name));
      }
    } else {
      table_schema = table;
    }
  }
  return ret;
}

// Attention: only used in SQL Layer.
int ObSchemaChecker::get_table_schema(const uint64_t table_id, const ObTableSchema*& table_schema) const
{
  int ret = OB_SUCCESS;
  table_schema = NULL;

  const ObTableSchema* table = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(table_id), K(ret));
  } else if (OB_FAIL(get_table_schema_inner(table_id, table))) {
    LOG_WARN("get table schema failed", K(table_id), K(ret));
  } else if (NULL == table) {
    // maybe schema of cte table.
    for (int64_t i = 0; i < tmp_cte_schemas_.count(); i++) {
      if (tmp_cte_schemas_.at(i)->get_table_id() == table_id) {
        table = tmp_cte_schemas_.at(i);
        break;
      }
    }
    if (NULL == table) {
      ret = OB_TABLE_NOT_EXIST;
      LOG_WARN("table is not exist", K(table_id));
    } else {
      table_schema = table;
    }
  } else if (table->is_dropped_schema()) {
    ret = OB_TABLE_NOT_EXIST;
    LOG_WARN("table is not exist", K(table_id));
  } else {
    table_schema = table;
  }
  return ret;
}

int ObSchemaChecker::get_link_table_schema(const uint64_t dblink_id, const ObString& database_name,
    const ObString& table_name, const ObTableSchema*& table_schema)
{
  int ret = OB_SUCCESS;
  OV(OB_NOT_NULL(sql_schema_mgr_));
  OZ(sql_schema_mgr_->get_table_schema(dblink_id, database_name, table_name, table_schema),
      dblink_id,
      database_name,
      table_name);
  return ret;
}

int ObSchemaChecker::check_if_partition_key(uint64_t table_id, uint64_t column_id, bool& is_part_key) const
{
  int ret = OB_SUCCESS;
  is_part_key = false;
  const ObTableSchema* tbl_schema = NULL;
  if (OB_FAIL(get_table_schema(table_id, tbl_schema))) {
    LOG_WARN("get table schema failed", K(ret), K(table_id));
  } else if (tbl_schema->is_partitioned_table()) {
    if (OB_FAIL(tbl_schema->get_partition_key_info().is_rowkey_column(column_id, is_part_key))) {
      LOG_WARN("check if the column_id is partition key failed", K(ret), K(table_id), K(column_id));
    } else if (!is_part_key && PARTITION_LEVEL_TWO == tbl_schema->get_part_level()) {
      if (OB_FAIL(tbl_schema->get_subpartition_key_info().is_rowkey_column(column_id, is_part_key))) {
        LOG_WARN("check if the column_id is subpartition key failed", K(ret), K(table_id), K(column_id));
      }
    }
  }
  return ret;
}

int ObSchemaChecker::get_can_read_index_array(
    uint64_t table_id, uint64_t* index_tid_array, int64_t& size, bool with_mv) const
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id || size <= 0) || OB_ISNULL(index_tid_array)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(table_id), K(size), K(index_tid_array), K(ret));
  } else if (OB_NOT_NULL(sql_schema_mgr_)) {
    if (OB_FAIL(sql_schema_mgr_->get_can_read_index_array(table_id, index_tid_array, size, with_mv))) {
      LOG_WARN("failed to get_can_read_index_array", K(table_id), K(ret));
    }
  } else {
    if (OB_FAIL(schema_mgr_->get_can_read_index_array(table_id, index_tid_array, size, with_mv))) {
      LOG_WARN("failed to get_can_read_index_array", K(table_id), K(ret));
    }
  }
  return ret;
}

int ObSchemaChecker::get_can_write_index_array(
    uint64_t table_id, uint64_t* index_tid_array, int64_t& size, bool only_global) const
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id || size <= 0) || OB_ISNULL(index_tid_array)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(table_id), K(size), K(index_tid_array), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_can_write_index_array(table_id, index_tid_array, size, only_global))) {
    LOG_WARN("failed to get_can_write_index_array", K(table_id), K(ret));
  } else {
  }
  return ret;
}

int ObSchemaChecker::column_is_key(uint64_t table_id, uint64_t column_id, bool& is_key)
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else {
    ret = schema_mgr_->column_is_key(table_id, column_id, is_key);
  }
  return ret;
}

int ObSchemaChecker::get_tenant_id(const ObString& tenant_name, uint64_t& tenant_id)
{
  int ret = OB_SUCCESS;

  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(tenant_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid tenant_name", K(tenant_name), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_tenant_id(tenant_name, tenant_id))) {
    LOG_WARN("get tenant id failed", K(tenant_name), K(ret));
  } else if (OB_INVALID_ID == tenant_id) {
    ret = OB_TENANT_NOT_EXIST;
    LOG_WARN("tenant is not exist", K(tenant_name), K(ret));
  }
  return ret;
}

int ObSchemaChecker::get_tenant_info(const uint64_t& tenant_id, const ObTenantSchema*& tenant_schema)
{
  int ret = OB_SUCCESS;
  tenant_schema = NULL;

  const ObTenantSchema* tenant = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid tenant_id", K(tenant_id), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_tenant_info(tenant_id, tenant))) {
    LOG_WARN("get tenant schema failed", K(ret), K(tenant_id));
  } else if (NULL == tenant) {
    ret = OB_TENANT_NOT_EXIST;
    LOG_WARN("tenant is not exist", K(tenant_id), K(ret));
  } else {
    tenant_schema = tenant;
  }
  return ret;
}

int ObSchemaChecker::get_sys_variable_schema(const uint64_t& tenant_id, const ObSysVariableSchema*& sys_variable_schema)
{
  int ret = OB_SUCCESS;
  sys_variable_schema = NULL;

  const ObSysVariableSchema* sys_variable = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid tenant_id", K(tenant_id), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_sys_variable_schema(tenant_id, sys_variable))) {
    LOG_WARN("get tenant schema failed", K(ret), K(tenant_id));
  } else if (NULL == sys_variable) {
    ret = OB_TENANT_NOT_EXIST;
    LOG_WARN("tenant is not exist", K(tenant_id), K(ret));
  } else {
    sys_variable_schema = sys_variable;
  }
  return ret;
}

int ObSchemaChecker::get_database_schema(
    const uint64_t tenant_id, const uint64_t database_id, const ObDatabaseSchema*& database_schema)
{
  int ret = OB_SUCCESS;
  database_schema = NULL;

  const ObDatabaseSchema* database = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || OB_INVALID_ID == database_id)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(database_id), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_database_schema(tenant_id, database_id, database))) {
    LOG_WARN("get database schema failed", K(tenant_id), K(database_id), K(ret));
  } else if (NULL == database) {
    ret = OB_ERR_BAD_DATABASE;
    LOG_WARN("fail to get database schema", K(tenant_id), K(database_id), K(ret));
  } else {
    database_schema = database;
  }
  return ret;
}

int ObSchemaChecker::get_fulltext_column(
    uint64_t table_id, const ColumnReferenceSet& column_set, const ObColumnSchemaV2*& column_schema) const
{
  int ret = OB_SUCCESS;
  const ObTableSchema* table = NULL;
  if (OB_FAIL(get_table_schema(table_id, table))) {
    LOG_WARN("get table schema failed", K(ret), K(table_id));
  } else if (NULL == table) {
    ret = OB_TABLE_NOT_EXIST;
    LOG_WARN("table is not exist", K(table_id));
  } else {
    column_schema = table->get_fulltext_column(column_set);
  }
  return ret;
}

int ObSchemaChecker::check_column_has_index(uint64_t table_id, uint64_t column_id, bool& has_index)
{
  int ret = OB_SUCCESS;
  const ObColumnSchemaV2* col_schema = NULL;
  uint64_t index_tid_array[OB_MAX_INDEX_PER_TABLE];
  int64_t index_cnt = OB_MAX_INDEX_PER_TABLE;

  has_index = false;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_FAIL(get_can_read_index_array(table_id, index_tid_array, index_cnt, true))) {
    LOG_WARN("get table schema failed", K(table_id));
  }
  for (int64_t i = 0; OB_SUCC(ret) && !has_index && i < index_cnt; ++i) {
    if (OB_FAIL(get_column_schema_inner(index_tid_array[i], column_id, col_schema))) {
      LOG_WARN("get column schema failed", K(ret), K(index_tid_array[i]), K(column_id));
    } else if (col_schema != NULL && col_schema->is_index_column()) {
      has_index = true;
    }
  }
  return ret;
}

int ObSchemaChecker::get_syn_info(const uint64_t tenant_id, const ObString& database_name, const ObString& sym_name,
    ObString& obj_dbname, ObString& obj_name, bool& exists)
{
  int ret = OB_SUCCESS;
  uint64_t db_id = OB_INVALID_ID;
  const ObSimpleSynonymSchema* synonym_schema = NULL;

  exists = false;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K_(is_inited));
  } else if (OB_FAIL(get_database_id(tenant_id, database_name, db_id))) {
    LOG_WARN("get database id failed", K(ret));
  } else if (OB_FAIL(schema_mgr_->get_synonym_info(tenant_id, db_id, sym_name, synonym_schema))) {

    LOG_WARN("get_synonym_schema_with_name failed", K(ret));
  } else if (synonym_schema == NULL) {
    ret = OB_TABLE_NOT_EXIST;
    LOG_WARN("sym is not exist", K(tenant_id), K(database_name), K(sym_name), K(ret));
  } else {
    const ObSimpleDatabaseSchema* db_schema = NULL;
    OZ(schema_mgr_->get_database_schema(synonym_schema->get_object_database_id(), db_schema));
    if (OB_SUCC(ret) && db_schema != NULL) {
      exists = true;
      OX(obj_dbname = db_schema->get_database_name_str());
      OX(obj_name = synonym_schema->get_object_name_str());
    }
  }
  return ret;
}

int ObSchemaChecker::check_has_all_server_readonly_replica(uint64_t table_id, bool& has)
{
  int ret = OB_SUCCESS;
  const ObTableSchema* table_schema = NULL;
  if (OB_UNLIKELY(!is_inited_)) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(ret), K(is_inited_));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid table id", K(ret), K(table_id));
  } else if (OB_FAIL(get_table_schema_inner(table_id, table_schema))) {
    LOG_WARN("fail to get table schema", K(ret), K(table_id));
  } else if (OB_UNLIKELY(NULL == table_schema)) {
    ret = OB_ERR_UNEXPECTED;
    LOG_WARN("table schema null", K(ret), KP(table_schema), K(table_id));
  } else if (OB_FAIL(table_schema->check_has_all_server_readonly_replica(*schema_mgr_, has))) {
    LOG_WARN("fail to check has all server readonly replica", K(ret), K(table_id));
  } else {
  }  // no more to do
  return ret;
}

int ObSchemaChecker::check_is_all_server_readonly_replica(uint64_t table_id, bool& is)
{
  int ret = OB_SUCCESS;
  const ObTableSchema* table_schema = NULL;
  if (OB_UNLIKELY(!is_inited_)) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(ret), K(is_inited_));
  } else if (OB_UNLIKELY(OB_INVALID_ID == table_id)) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid table id", K(ret), K(table_id));
  } else if (OB_FAIL(get_table_schema_inner(table_id, table_schema))) {
    LOG_WARN("fail to get table schema", K(ret), K(table_id));
  } else if (OB_UNLIKELY(NULL == table_schema)) {
    ret = OB_ERR_UNEXPECTED;
    LOG_WARN("table schema null", K(ret), KP(table_schema), K(table_id));
  } else if (OB_FAIL(table_schema->check_is_all_server_readonly_replica(*schema_mgr_, is))) {
    LOG_WARN("fail to check is all server readonly replica", K(ret), K(table_id));
  } else {
  }  // no more to do
  return ret;
}

int ObSchemaChecker::get_synonym_info_version(uint64_t synonym_id, int64_t& synonym_version)
{
  return schema_mgr_->get_synonym_info_version(synonym_id, synonym_version);
}

int ObSchemaChecker::get_synonym_schema(uint64_t tenant_id, const uint64_t database_id, const ObString& synonym_name,
    uint64_t& object_database_id, uint64_t& synonym_id, ObString& object_table_name, bool& exist)
{
  return schema_mgr_->get_object_with_synonym(
      tenant_id, database_id, synonym_name, object_database_id, synonym_id, object_table_name, exist);
}

int ObSchemaChecker::get_obj_info_recursively_with_synonym(const uint64_t tenant_id, const uint64_t syn_db_id,
    const common::ObString& syn_name, uint64_t& obj_db_id, common::ObString& obj_name, ObIArray<uint64_t>& syn_id_arr,
    bool is_first_called)
{
  int ret = OB_SUCCESS;
  uint64_t syn_id = OB_INVALID_ID;
  bool syn_exist = false;
  if (OB_FAIL(get_synonym_schema(tenant_id, syn_db_id, syn_name, obj_db_id, syn_id, obj_name, syn_exist))) {
    LOG_WARN("get_obj_info_recursively_with_synonym failed", K(ret), K(tenant_id), K(syn_db_id), K(syn_name));
  }

  if (OB_SUCC(ret)) {
    if (!syn_exist) {
      if (is_first_called) {
        ret = OB_SYNONYM_NOT_EXIST;
        LOG_WARN("synonym not exist", K(ret), K(tenant_id), K(syn_db_id), K(syn_name));
      } else {
      }
    } else {
      uint64_t new_syn_db_id = obj_db_id;
      ObString new_syn_obj_name = obj_name;
      if (OB_UNLIKELY(has_exist_in_array(syn_id_arr, syn_id))) {
        ret = OB_ERR_LOOP_OF_SYNONYM;
        LOG_WARN("duplicated synonym id", K(ret), K(syn_id), K(syn_id_arr));
      } else if (OB_FAIL(syn_id_arr.push_back(syn_id))) {
        LOG_WARN("push back syn_id failed", K(ret), K(syn_id), K(syn_id_arr));
      } else if (OB_FAIL(SMART_CALL(get_obj_info_recursively_with_synonym(
                     tenant_id, new_syn_db_id, new_syn_obj_name, obj_db_id, obj_name, syn_id_arr, false)))) {
        LOG_WARN("get_obj_info_recursively_with_synonym failed",
            K(ret),
            K(tenant_id),
            K(new_syn_db_id),
            K(new_syn_obj_name));
      }
    }
  }
  return ret;
}

int ObSchemaChecker::add_fake_cte_schema(share::schema::ObTableSchema* tbl_schema)
{
  int ret = OB_SUCCESS;
  bool dup_schame = false;
  for (int64_t i = 0; OB_SUCC(ret) && i < tmp_cte_schemas_.count(); i++) {
    if (tbl_schema->get_table_name() == tmp_cte_schemas_.at(i)->get_table_name()) {
      dup_schame = true;
    }
  }
  if (!dup_schame) {
    if (OB_FAIL(tmp_cte_schemas_.push_back(tbl_schema))) {
      LOG_WARN("push back cte schema failed");
    }
  }
  return ret;
}

int ObSchemaChecker::find_fake_cte_schema(common::ObString tblname, bool& exist)
{
  int ret = OB_SUCCESS;
  exist = false;
  for (int64_t i = 0; OB_SUCC(ret) && i < tmp_cte_schemas_.count(); ++i) {
    if (tmp_cte_schemas_.at(i)->get_table_name_str() == tblname) {
      exist = true;
      break;
    }
  }
  return ret;
}

int ObSchemaChecker::get_schema_version(
    uint64_t table_id, share::schema::ObSchemaType schema_type, int64_t& schema_version)
{
  int ret = OB_SUCCESS;
  if (OB_ISNULL(schema_mgr_)) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema mgr is null");
  } else {
    ret = schema_mgr_->get_schema_version_v2(schema_type, table_id, schema_version);
  }
  return ret;
}

int ObSchemaChecker::get_tablegroup_schema(
    const int64_t tenant_id, const ObString& tablegroup_name, const ObTablegroupSchema*& tablegroup_schema)
{
  int ret = OB_SUCCESS;
  uint64_t tablegroup_id = OB_INVALID_ID;
  if (OB_INVALID_ID == tenant_id || tablegroup_name.empty()) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid argument", K(ret), K(tenant_id), K(tablegroup_name));
  } else if (OB_ISNULL(schema_mgr_)) {
    ret = OB_NOT_INIT;
    LOG_WARN("invalid argument", K(ret), K(schema_mgr_));
  } else if (OB_FAIL(schema_mgr_->get_tablegroup_id(tenant_id, tablegroup_name, tablegroup_id))) {
    LOG_WARN("fail to get tablegroup id", K(ret), K(tenant_id), K(tablegroup_name));
  } else if (OB_INVALID_ID == tablegroup_id) {
    ret = OB_TABLEGROUP_NOT_EXIST;
    LOG_WARN("table group not exist", K(ret), K(tablegroup_id));
  } else if (OB_FAIL(schema_mgr_->get_tablegroup_schema(tablegroup_id, tablegroup_schema))) {
    LOG_WARN("fail to get tablegroup schema", K(ret), K(tablegroup_id));
  } else if (OB_ISNULL(tablegroup_schema)) {
    ret = OB_TABLEGROUP_NOT_EXIST;
    LOG_WARN("get invalid tablegroup schema", K(ret), K(tenant_id), K(tablegroup_name));
  }
  return ret;
}

int ObSchemaChecker::get_udf_info(
    uint64_t tenant_id, const common::ObString& udf_name, const share::schema::ObUDF*& udf_info, bool& exist)
{
  int ret = OB_SUCCESS;
  if (OB_INVALID_ID == tenant_id || udf_name.empty()) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid argument", K(ret), K(tenant_id), K(udf_name));
  } else if (OB_ISNULL(schema_mgr_)) {
    ret = OB_NOT_INIT;
    LOG_WARN("invalid argument", K(ret), K(schema_mgr_));
  } else if (OB_FAIL(schema_mgr_->get_udf_info(tenant_id, udf_name, udf_info, exist))) {
    LOG_WARN("failed to get udf schema", K(ret));
  }
  return ret;
}

int ObSchemaChecker::check_sequence_exist_with_name(const uint64_t tenant_id, const uint64_t database_id,
    const common::ObString& sequence_name, bool& exists, uint64_t& sequence_id)
{
  int ret = OB_SUCCESS;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K_(is_inited));
  } else if (OB_FAIL(schema_mgr_->check_sequence_exist_with_name(
                 tenant_id, database_id, sequence_name, exists, sequence_id))) {
    LOG_WARN("get sequence id failed", K(tenant_id), K(database_id), K(database_id), K(sequence_name), K(ret));
  }
  return ret;
}

int ObSchemaChecker::get_sequence_id(const uint64_t tenant_id, const common::ObString& database_name,
    const common::ObString& sequence_name, uint64_t& sequence_id)
{
  int ret = OB_SUCCESS;
  bool is_exist = false;
  uint64_t database_id = 0;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K_(is_inited));
  } else if (OB_FAIL(get_database_id(tenant_id, database_name, database_id))) {
    LOG_WARN("fail to get_database_id", K(ret));
  } else if (OB_FAIL(schema_mgr_->check_sequence_exist_with_name(
                 tenant_id, database_id, sequence_name, is_exist, sequence_id))) {
    LOG_WARN("get sequence id failed", K(tenant_id), K(database_id), K(database_id), K(sequence_name), K(ret));
  } else if (!is_exist) {
    ret = OB_ERR_SEQ_NOT_EXIST;
  }
  return ret;
}

// only use in oracle mode
int ObSchemaChecker::get_idx_schema_by_origin_idx_name(const uint64_t tenant_id, const uint64_t database_id,
    const ObString& index_name, const ObTableSchema*& table_schema)
{
  int ret = OB_SUCCESS;
  table_schema = NULL;

  const ObTableSchema* table = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
  } else if (OB_UNLIKELY(OB_INVALID_ID == tenant_id || OB_INVALID_ID == database_id || index_name.empty())) {
    ret = OB_INVALID_ARGUMENT;
    LOG_WARN("invalid arguments", K(tenant_id), K(database_id), K(index_name), K(ret));
  } else if (OB_FAIL(schema_mgr_->get_idx_schema_by_origin_idx_name(tenant_id, database_id, index_name, table))) {
    LOG_WARN("get table schema failed", K(tenant_id), K(database_id), K(index_name), K(ret));
  } else {
    if (NULL == table) {
      LOG_WARN("index table schema is null", K(index_name), K(ret));
    } else if (false == table->is_tmp_table() && 0 != table->get_session_id() &&
               OB_INVALID_ID != schema_mgr_->get_session_id()) {
      const ObDatabaseSchema* db_schema = NULL;
      if (OB_FAIL(schema_mgr_->get_database_schema(tenant_id, database_id, db_schema))) {
        LOG_WARN("get database schema failed", K(tenant_id), K(database_id), K(ret));
      } else if (NULL == db_schema) {
        ret = OB_ERR_BAD_DATABASE;
        LOG_WARN("fail to get database schema", K(tenant_id), K(database_id), K(ret));
      } else {
        ret = OB_TABLE_NOT_EXIST;
        LOG_USER_ERROR(OB_TABLE_NOT_EXIST, db_schema->get_database_name(), to_cstring(index_name));
      }
    } else {
      table_schema = table;
    }
  }
  return ret;
}

int ObSchemaChecker::get_profile_id(
    const uint64_t tenant_id, const common::ObString& profile_name, uint64_t& profile_id)
{
  int ret = OB_SUCCESS;
  const ObProfileSchema* schema = NULL;
  if (IS_NOT_INIT) {
    ret = OB_NOT_INIT;
    LOG_WARN("schema checker is not inited", K_(is_inited));
  } else if (OB_FAIL(schema_mgr_->get_profile_schema_by_name(tenant_id, profile_name, schema))) {
    LOG_WARN("get profile id failed", K(ret));
  } else if (OB_ISNULL(schema)) {
    ret = OB_ERR_PROFILE_STRING_DOES_NOT_EXIST;
    LOG_USER_ERROR(OB_ERR_PROFILE_STRING_DOES_NOT_EXIST, profile_name.length(), profile_name.ptr());
  } else {
    profile_id = schema->get_profile_id();
  }
  return ret;
}

int ObSchemaChecker::get_dblink_id(uint64_t tenant_id, const ObString& dblink_name, uint64_t& dblink_id)
{
  int ret = OB_SUCCESS;
  if (OB_ISNULL(schema_mgr_)) {
    ret = OB_NOT_INIT;
    LOG_WARN("invalid argument", K(ret), K(schema_mgr_));
  } else if (OB_FAIL(schema_mgr_->get_dblink_id(tenant_id, dblink_name, dblink_id))) {
    LOG_WARN("failed to get dblink id", K(ret), K(tenant_id), K(dblink_name));
  }
  return ret;
}

int ObSchemaChecker::get_dblink_user(const uint64_t tenant_id, const common::ObString& dblink_name,
    common::ObString& dblink_user, common::ObIAllocator& allocator)
{
  int ret = OB_SUCCESS;
  if (OB_ISNULL(schema_mgr_)) {
    ret = OB_NOT_INIT;
    LOG_WARN("invalid argument", K(ret), K(schema_mgr_));
  } else if (OB_FAIL(schema_mgr_->get_dblink_user(tenant_id, dblink_name, dblink_user, allocator))) {
    LOG_WARN("failed to get dblink id", K(ret), K(tenant_id), K(dblink_name));
  }
  return ret;
}

int ObSchemaChecker::get_table_schema_inner(uint64_t table_id, const ObTableSchema*& table_schema) const
{
  int ret = OB_SUCCESS;
  if (OB_NOT_NULL(sql_schema_mgr_)) {
    OZ(sql_schema_mgr_->get_table_schema(table_id, table_schema), table_id);
  } else {
    OV(OB_NOT_NULL(schema_mgr_));
    OZ(schema_mgr_->get_table_schema(table_id, table_schema), table_id);
  }
  return ret;
}
int ObSchemaChecker::get_column_schema_inner(
    uint64_t table_id, const ObString& column_name, const ObColumnSchemaV2*& column_schema) const
{
  int ret = OB_SUCCESS;
  if (OB_NOT_NULL(sql_schema_mgr_)) {
    OZ(sql_schema_mgr_->get_column_schema(table_id, column_name, column_schema), table_id, column_name);
  } else {
    OV(OB_NOT_NULL(schema_mgr_));
    OZ(schema_mgr_->get_column_schema(table_id, column_name, column_schema), table_id, column_name);
  }
  return ret;
}

int ObSchemaChecker::get_column_schema_inner(
    uint64_t table_id, const uint64_t column_id, const ObColumnSchemaV2*& column_schema) const
{
  int ret = OB_SUCCESS;
  if (OB_NOT_NULL(sql_schema_mgr_)) {
    OZ(sql_schema_mgr_->get_column_schema(table_id, column_id, column_schema), table_id, column_id);
  } else {
    OV(OB_NOT_NULL(schema_mgr_));
    OZ(schema_mgr_->get_column_schema(table_id, column_id, column_schema), table_id, column_id);
  }
  return ret;
}

int ObSchemaChecker::get_object_type_with_view_info(ObIAllocator* allocator, void* param_org, const uint64_t tenant_id,
    const common::ObString& database_name, const common::ObString& table_name, share::schema::ObObjectType& object_type,
    uint64_t& object_id, void*& view_query, bool is_directory, common::ObString& object_db_name, bool explicit_db,
    const common::ObString& prev_table_name) /* ObSelectStmt* */
{
  int ret = OB_SUCCESS;
  object_type = ObObjectType::INVALID;
  object_id = OB_INVALID_ID;
  const share::schema::ObTableSchema* table_schema = NULL;
  uint64_t database_id = OB_INVALID_ID;

  CK(allocator != NULL);
  CK(param_org != NULL);
  object_db_name = database_name;
  ObResolverParams& param = *static_cast<ObResolverParams*>(param_org);
  if (OB_FAIL(get_database_id(tenant_id, database_name, database_id))) {
    if (share::is_oracle_mode() && ret == OB_ERR_BAD_DATABASE) {
      ret = OB_TABLE_NOT_EXIST;
    }
  } else if (false == is_directory) {
    ret = get_table_schema(tenant_id, database_name, table_name, false, table_schema);
    if (OB_TABLE_NOT_EXIST == ret) {
      if (lib::is_oracle_mode()) {
        ret = get_idx_schema_by_origin_idx_name(tenant_id, database_id, table_name, table_schema);
        if (OB_SUCC(ret) && table_schema == NULL) {
          ret = OB_TABLE_NOT_EXIST;
        }
      }
    }
    if (OB_SUCC(ret) && table_schema != NULL) {
      if (table_schema->is_index_table()) {
        object_type = ObObjectType::INDEX;
      } else {
        object_type = ObObjectType::TABLE;
      }
      object_id = table_schema->get_table_id();

      if (table_schema->is_view_table() && !table_schema->is_materialized_view()) {
        ObSelectStmt* select_stmt = NULL;
        // ObStmtFactory stmt_factory(*allocator);
        // ObRawExprFactory expr_factory(*allocator);
        if (OB_FAIL(observer::ObTableColumns::resolve_view_definition(allocator,
                param.session_info_,
                schema_mgr_,
                *table_schema,
                select_stmt,
                *param.expr_factory_,
                *param.stmt_factory_))) {
          LOG_WARN("failed to resolve view definition", K(table_name), K(ret));
        } else if (OB_UNLIKELY(NULL == select_stmt)) {
          ret = OB_ERR_UNEXPECTED;
          LOG_WARN("select_stmt is NULL", K(ret));
        } else {
          view_query = select_stmt;
        }
      }
    }
    // check sequence
    if (OB_TABLE_NOT_EXIST == ret) {
      uint64_t sequence_id = 0;
      if (OB_FAIL(get_sequence_id(tenant_id, database_name, table_name, sequence_id))) {
        if (OB_ERR_SEQ_NOT_EXIST == ret) {
          ret = OB_TABLE_NOT_EXIST;
        }
      } else {
        object_type = ObObjectType::SEQUENCE;
        object_id = sequence_id;
      }
    }

    // check synonym
    if (OB_TABLE_NOT_EXIST == ret) {
      ObString obj_db_name;
      ObString obj_name;
      bool exists = false;
      ret = OB_SUCCESS;
      OZ(get_syn_info(tenant_id, database_name, table_name, obj_db_name, obj_name, exists));
      if (OB_SUCC(ret) && exists) {
        object_db_name = obj_db_name;
        OZ(SMART_CALL(get_object_type_with_view_info(allocator,
            param_org,
            tenant_id,
            obj_db_name,
            obj_name,
            object_type,
            object_id,
            view_query,
            is_directory,
            object_db_name,
            false,
            ObString(""))));
      }
    }
    // check public synonym
    if (OB_TABLE_NOT_EXIST == ret) {
      ObString obj_db_name;
      ObString obj_name;
      bool exists = false;
      ret = OB_SUCCESS;
      if (explicit_db) {
        ret = OB_TABLE_NOT_EXIST;
      } else {
        ObString pub_db_name =
            lib::is_oracle_mode() ? ObString(OB_ORA_PUBLIC_SCHEMA_NAME) : ObString(OB_PUBLIC_SCHEMA_NAME);
        OZ(get_syn_info(tenant_id, pub_db_name, table_name, obj_db_name, obj_name, exists));
        if (OB_SUCC(ret) && exists) {
          if (prev_table_name == obj_name) {
            ret = OB_TABLE_NOT_EXIST;
          } else {
            object_db_name = obj_db_name;
            OZ(SMART_CALL(get_object_type_with_view_info(allocator,
                param_org,
                tenant_id,
                obj_db_name,
                obj_name,
                object_type,
                object_id,
                view_query,
                is_directory,
                object_db_name,
                false,
                table_name))); /* false */
          }
        }
      }
    }
  } else {
    // if directory, support it's a directory, to do after create directory
    object_type = ObObjectType::DIRECTORY;
    object_id = OBJ_ID_FOR_DIR;
    ret = OB_SUCCESS;
  }

  if (OB_FAIL(ret)) {
    LOG_WARN("get_object_type_with_view_info failed", K(tenant_id), K(database_name), K(table_name), K(ret));
  }
  return ret;
}

int ObSchemaChecker::get_object_type(const uint64_t tenant_id, const common::ObString& database_name,
    const common::ObString& table_name, share::schema::ObObjectType& object_type, uint64_t& object_id,
    common::ObString& object_db_name, bool is_directory, bool explicit_db, const common::ObString& prev_table_name)
{
  int ret = OB_SUCCESS;
  object_type = ObObjectType::INVALID;
  object_id = OB_INVALID_ID;
  const share::schema::ObTableSchema* table_schema = NULL;
  uint64_t database_id = OB_INVALID_ID;

  object_db_name = database_name;
  if (OB_FAIL(get_database_id(tenant_id, database_name, database_id))) {
    if (share::is_oracle_mode() && ret == OB_ERR_BAD_DATABASE) {
      ret = OB_TABLE_NOT_EXIST;
    }
  } else if (false == is_directory) {
    ret = get_table_schema(tenant_id, database_name, table_name, false, table_schema);
    if (OB_TABLE_NOT_EXIST == ret) {
      if (lib::is_oracle_mode()) {
        ret = get_idx_schema_by_origin_idx_name(tenant_id, database_id, table_name, table_schema);
        if (OB_SUCC(ret)) {
          if (table_schema == NULL) {
            ret = OB_TABLE_NOT_EXIST;
          }
        }
      }
    }
    if (OB_SUCC(ret) && table_schema != NULL) {
      if (table_schema->is_index_table()) {
        object_type = ObObjectType::INDEX;
      } else {
        object_type = ObObjectType::TABLE;
      }
      object_id = table_schema->get_table_id();
    }
    // check sequence
    if (OB_TABLE_NOT_EXIST == ret) {
      uint64_t sequence_id = 0;
      if (OB_FAIL(get_sequence_id(tenant_id, database_name, table_name, sequence_id))) {
        if (OB_ERR_SEQ_NOT_EXIST == ret) {
          ret = OB_TABLE_NOT_EXIST;
        }
      } else {
        object_type = ObObjectType::SEQUENCE;
        object_id = sequence_id;
      }
    }

    // check synonym
    if (OB_TABLE_NOT_EXIST == ret) {
      ObString obj_db_name;
      ObString obj_name;
      bool exists = false;
      ret = OB_SUCCESS;
      OZ(get_syn_info(tenant_id, database_name, table_name, obj_db_name, obj_name, exists));
      if (OB_SUCC(ret) && exists) {
        object_db_name = obj_db_name;
        OZ(SMART_CALL(get_object_type(tenant_id,
            obj_db_name,
            obj_name,
            object_type,
            object_id,
            object_db_name,
            is_directory,
            false,
            ObString(""))));
      }
    }
    // check public synonym
    if (OB_TABLE_NOT_EXIST == ret) {
      ObString obj_db_name;
      ObString obj_name;
      bool exists = false;
      ret = OB_SUCCESS;
      if (explicit_db) {
        ret = OB_TABLE_NOT_EXIST;
      } else {
        ObString pub_db_name =
            lib::is_oracle_mode() ? ObString(OB_ORA_PUBLIC_SCHEMA_NAME) : ObString(OB_PUBLIC_SCHEMA_NAME);
        OZ(get_syn_info(tenant_id, pub_db_name, table_name, obj_db_name, obj_name, exists));
        if (OB_SUCC(ret) && exists) {
          if (prev_table_name == obj_name) {
            ret = OB_TABLE_NOT_EXIST;
          } else {
            object_db_name = obj_db_name;
            OZ(SMART_CALL(get_object_type(tenant_id,
                obj_db_name,
                obj_name,
                object_type,
                object_id,
                object_db_name,
                is_directory,
                false,
                table_name)));
          }
        }
      }
    }

  } else {
    // if directory, support it's a directory, to do after create directory
    object_type = ObObjectType::DIRECTORY;
    object_id = OBJ_ID_FOR_DIR;
    ret = OB_SUCCESS;
  }
  if (OB_FAIL(ret)) {
    LOG_WARN("get_object_type failed", K(tenant_id), K(database_name), K(table_name), K(ret));
  }
  return ret;
}

/* check privilege of grant role priv */
int ObSchemaChecker::check_ora_grant_role_priv(const uint64_t tenant_id, const uint64_t user_id,
    const ObSEArray<uint64_t, 4>& role_granted_id_array, const ObIArray<uint64_t>& role_id_array)
{
  int ret = OB_SUCCESS;
  if (is_ora_priv_check()) {
    if (IS_NOT_INIT) {
      ret = OB_NOT_INIT;
      LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
    } else if (FALSE_IT(schema_mgr_ == NULL)) {
    } else if (GET_MIN_CLUSTER_VERSION() >= CLUSTER_VERSION_2260) {
      OZ(ObOraSysChecker::check_ora_grant_role_priv(
          *schema_mgr_, tenant_id, user_id, role_granted_id_array, role_id_array));
    }
  }
  return ret;
}

/* check privilege of grant sys priv */
int ObSchemaChecker::check_ora_grant_sys_priv(const uint64_t tenant_id, const uint64_t user_id,
    const share::ObRawPrivArray& sys_priv_array, const ObIArray<uint64_t>& role_id_array)
{
  int ret = OB_SUCCESS;
  if (is_ora_priv_check()) {
    if (IS_NOT_INIT) {
      ret = OB_NOT_INIT;
      LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
    } else if (FALSE_IT(schema_mgr_ == NULL)) {
    } else if (GET_MIN_CLUSTER_VERSION() >= CLUSTER_VERSION_2260) {
      OZ(ObOraSysChecker::check_ora_grant_sys_priv(*schema_mgr_, tenant_id, user_id, sys_priv_array, role_id_array));
    }
  }
  return ret;
}

/* check privilege of grant obj priv */
int ObSchemaChecker::check_ora_grant_obj_priv(const uint64_t tenant_id, const uint64_t user_id,
    const common::ObString& db_name, const uint64_t obj_id, const uint64_t obj_type,
    const share::ObRawObjPrivArray& table_priv_array, const ObSEArray<uint64_t, 4>& ins_col_ids,
    const ObSEArray<uint64_t, 4>& upd_col_ids, const ObSEArray<uint64_t, 4>& ref_col_ids, uint64_t& grantor_id_out,
    const ObIArray<uint64_t>& role_id_array)
{
  int ret = OB_SUCCESS;
  if (is_ora_priv_check()) {
    if (IS_NOT_INIT) {
      ret = OB_NOT_INIT;
      LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
    } else if (FALSE_IT(schema_mgr_ == NULL)) {
    } else if (GET_MIN_CLUSTER_VERSION() >= CLUSTER_VERSION_2260) {
      OZ(ObOraSysChecker::check_ora_grant_obj_priv(*schema_mgr_,
          tenant_id,
          user_id,
          db_name,
          obj_id,
          obj_type,
          table_priv_array,
          ins_col_ids,
          upd_col_ids,
          ref_col_ids,
          grantor_id_out,
          role_id_array));
    }
  }
  return ret;
}

int ObSchemaChecker::check_ora_ddl_priv(const uint64_t tenant_id, const uint64_t user_id,
    const common::ObString& database_name, const sql::stmt::StmtType stmt_type, const ObIArray<uint64_t>& role_id_array)
{
  int ret = OB_SUCCESS;
  if (is_ora_priv_check()) {
    if (IS_NOT_INIT) {
      ret = OB_NOT_INIT;
      LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
    } else if (FALSE_IT(schema_mgr_ == NULL)) {
    } else if (GET_MIN_CLUSTER_VERSION() >= CLUSTER_VERSION_2260) {
      if (is_ora_lbacsys_user(user_id) && is_lbca_op()) {
        // need not check
      } else {
        OZ(ObOraSysChecker::check_ora_ddl_priv(
               *schema_mgr_, tenant_id, user_id, database_name, stmt_type, role_id_array),
            K(tenant_id),
            K(user_id),
            K(database_name),
            K(stmt_type),
            K(role_id_array));
      }
    }
  }
  return ret;
}

int ObSchemaChecker::check_access_to_obj(const uint64_t tenant_id, const uint64_t user_id, const uint64_t obj_id,
    const sql::stmt::StmtType stmt_type, const ObIArray<uint64_t>& role_id_array, bool& accessible)
{
  int ret = OB_SUCCESS;
  accessible = false;
  if (is_ora_priv_check()) {
    if (IS_NOT_INIT) {
      ret = OB_NOT_INIT;
      LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
    } else if (OB_ISNULL(schema_mgr_)) {
      ret = OB_ERR_UNEXPECTED;
      LOG_WARN("schema_mgr_ is NULL", K(ret), K(tenant_id), K(user_id), K(obj_id));
    } else if (GET_MIN_CLUSTER_VERSION() >= CLUSTER_VERSION_2260) {
      if (is_ora_lbacsys_user(user_id) && is_lbca_op()) {
        accessible = true;
      } else {
        switch (stmt_type) {
          case stmt::T_CREATE_VIEW: {
            OZ(ObOraSysChecker::check_access_to_obj(*schema_mgr_,
                   tenant_id,
                   user_id,
                   PRIV_ID_CREATE_ANY_VIEW,
                   static_cast<uint64_t>(share::schema::ObObjectType::TABLE),
                   obj_id,
                   role_id_array,
                   accessible),
                K(tenant_id),
                K(user_id),
                K(stmt_type),
                K(role_id_array));
            break;
          }
          default: {
            ret = OB_ERR_UNEXPECTED;
            LOG_WARN("unexcepted stmt_type", K(ret), K(stmt_type));
            break;
          }
        }
      }
    }
  }
  return ret;
}

// int ObSchemaChecker::check_ora_ddl_priv(
//     const uint64_t tenant_id,
//     const uint64_t user_id,
//     const common::ObString &database_name,
//     const bool is_replace,
//     const stmt::StmtType stmt_type,
//     const stmt::StmtType stmt_type2)
// {
//   int ret = OB_SUCCESS;
//   if (IS_NOT_INIT) {
//     ret = OB_NOT_INIT;
//     LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
//   } else if (FALSE_IT(schema_mgr_ == NULL)) {
//   } else if (GET_MIN_CLUSTER_VERSION() >= CLUSTER_VERSION_3000) {
//     OZ (ObOraSysChecker::check_ora_ddl_priv(*schema_mgr_,
//                                             tenant_id,
//                                             user_id,
//                                             database_name,
//                                             stmt_type),
//         K(tenant_id), K(user_id), K(database_name), K(stmt_type));
//     if (OB_SUCC(ret) && is_replace) {
//       OZ (ObOraSysChecker::check_ora_ddl_priv(*schema_mgr_,
//                                             tenant_id,
//                                             user_id,
//                                             database_name,
//                                             stmt_type2),
//         K(tenant_id), K(user_id), K(database_name), K(stmt_type2));
//     }
//   }
//   return ret;
// }

// for some ddl, both system or obj priv is ok.
// Such as: alter table
//         create index

int ObSchemaChecker::check_ora_ddl_priv(const uint64_t tenant_id, const uint64_t user_id,
    const common::ObString& database_name, const uint64_t obj_id, const uint64_t obj_type,
    const sql::stmt::StmtType stmt_type, const ObIArray<uint64_t>& role_id_array)
{
  int ret = OB_SUCCESS;
  if (is_ora_priv_check()) {
    if (IS_NOT_INIT) {
      ret = OB_NOT_INIT;
      LOG_WARN("schema checker is not inited", K(is_inited_), K(ret));
    } else if (FALSE_IT(schema_mgr_ == NULL)) {
    } else if (GET_MIN_CLUSTER_VERSION() >= CLUSTER_VERSION_2260) {
      if (is_ora_lbacsys_user(user_id) && is_lbca_op()) {
        // need not check
      } else {
        OZ(ObOraSysChecker::check_ora_ddl_priv(
               *schema_mgr_, tenant_id, user_id, database_name, obj_id, obj_type, stmt_type, role_id_array),
            K(tenant_id),
            K(user_id),
            K(database_name),
            K(obj_id),
            K(obj_type),
            K(stmt_type));
      }
    }
  }
  return ret;
}

bool ObSchemaChecker::is_ora_priv_check()
{
  if (lib::is_oracle_mode() && GCONF._enable_oracle_priv_check)
    return true;
  else
    return false;
}

}  // end of namespace sql
}  // end of namespace oceanbase