hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

init push

Browse Source
This commit is contained in:
oceanbase-admin
2021-05-31 22:56:52 +08:00
commit cea7de1475
7020 changed files with 5689869 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

94
src/sql/engine/expr/ob_expr_sys_context.h Normal file
View File

@ -0,0 +1,94 @@
/**
* 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.
*/
#ifndef SRC_SQL_ENGINE_EXPR_OB_EXPR_SYS_CONTEXT_H_
#define SRC_SQL_ENGINE_EXPR_OB_EXPR_SYS_CONTEXT_H_
#include "sql/engine/expr/ob_expr_operator.h"
#include "lib/charset/ob_charset.h"
namespace oceanbase {
namespace sql {
class ObExprSysContext : public ObFuncExprOperator {
public:
ObExprSysContext();
explicit ObExprSysContext(common::ObIAllocator& alloc);
virtual ~ObExprSysContext();
virtual int calc_result_type2(
ObExprResType& type, ObExprResType& arg1, ObExprResType& arg2, common::ObExprTypeCtx& type_ctx) const override;
virtual int calc_result2(common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2,
common::ObExprCtx& expr_ctx) const override;
struct UserEnvParameter {
char name[32];
int (*calc)(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
int (*eval)(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1, const common::ObDatum& arg2,
ObEvalCtx& ctx);
};
static int calc_schemaid(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
static int calc_current_schemaid(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
static int calc_current_schema(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
static int calc_user(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
static int get_tenant_name(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
static int get_tenant_id(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
static int calc_sessionid_result(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
static int calc_ip_address(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
typedef int (*calc_fun)(
common::ObObj& result, const common::ObObj& arg1, const common::ObObj& arg2, common::ObExprCtx& expr_ctx);
static int eval_schemaid(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
static int eval_current_schemaid(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
static int eval_current_schema(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
static int eval_user(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
static int eval_tenant_name(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
static int eval_tenant_id(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
static int eval_sessionid(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
static int eval_ip_address(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
typedef int (*eval_fun)(const ObExpr& expr, common::ObDatum& res, const common::ObDatum& arg1,
const common::ObDatum& arg2, ObEvalCtx& ctx);
static int eval_sys_context(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res);
virtual int cg_expr(ObExprCGCtx& ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
private:
static int get_calc_fun(const common::ObString& ns_str, const common::ObString& para_str, calc_fun& fun);
static int get_userenv_fun(const common::ObString& para_str, calc_fun& fun);
static UserEnvParameter userenv_parameters_[];
static const int DEFAULT_LENGTH = 256;
static int get_eval_fun(const common::ObString& ns_str, const common::ObString& para_str, eval_fun& fun);
static int get_userenv_fun(const common::ObString& para_str, eval_fun& fun);
static int uint_string(const ObExpr& expr, ObEvalCtx& ctx, uint64_t id, common::ObDatum& res);
static int extract_ip(const common::ObString& user_at_client_ip, int64_t& start);
DISALLOW_COPY_AND_ASSIGN(ObExprSysContext);
};
} // end namespace sql
} // end namespace oceanbase
#endif