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patch 4.0

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wangzelin.wzl
2022-10-24 10:34:53 +08:00
parent 4ad6e00ec3
commit 93a1074b0c
10533 changed files with 2588271 additions and 2299373 deletions
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47
src/sql/engine/expr/ob_expr_get_sys_var.h
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@ -15,37 +15,44 @@
#include "sql/engine/expr/ob_expr_operator.h"
#include "sql/session/ob_sql_session_info.h"
namespace oceanbase {
namespace sql {
namespace oceanbase
{
namespace sql
{
// get_sys_var(name, scope)
class ObExprGetSysVar : public ObFuncExprOperator {
class ObExprGetSysVar: public ObFuncExprOperator
{
public:
static const ObExprOperatorType op_type_;
ObExprGetSysVar();
explicit ObExprGetSysVar(common::ObIAllocator& alloc);
explicit ObExprGetSysVar(common::ObIAllocator &alloc);
virtual ~ObExprGetSysVar();
virtual int calc_result_type2(
ObExprResType& type, ObExprResType& type1, ObExprResType& type2, common::ObExprTypeCtx& type_ctx) const;
virtual int calc_result2(
common::ObObj& result, const common::ObObj& name, const common::ObObj& scope, common::ObExprCtx& expr_ctx) const;
virtual int calc_result_type2(ObExprResType &type,
ObExprResType &type1,
ObExprResType &type2,
common::ObExprTypeCtx &type_ctx) const;
// for engine 3.0
virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
static int calc_get_sys_val_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum);
virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
ObExpr &rt_expr) const override;
static int calc_get_sys_val_expr(const ObExpr &expr, ObEvalCtx &ctx,
ObDatum &res_datum);
private:
static int calc_(common::ObObj& result, const common::ObString& var_name, const int64_t var_scope,
ObSQLSessionInfo* session, ObExecContext* exec_ctx, common::ObIAllocator& alloc);
static int get_session_var(common::ObObj& result, const common::ObString& var_name, common::ObIAllocator& alloc,
ObSQLSessionInfo* session, ObExecContext* exec_ctx);
static int get_sys_var_disp_obj(common::ObIAllocator& allocator, const ObSQLSessionInfo& session,
const common::ObString& var_name, common::ObObj& disp_obj);
static int calc_(common::ObObj &result, const common::ObString &var_name,
const int64_t var_scope, ObSQLSessionInfo *session,
ObExecContext *exec_ctx, common::ObIAllocator &alloc);
static int get_session_var(common::ObObj &result, const common::ObString &var_name,
common::ObIAllocator &alloc, ObSQLSessionInfo *session,
ObExecContext *exec_ctx);
static int get_sys_var_disp_obj(common::ObIAllocator &allocator,
const ObSQLSessionInfo &session,
const common::ObString &var_name,
common::ObObj &disp_obj);
private:
// disallow copy
DISALLOW_COPY_AND_ASSIGN(ObExprGetSysVar);
};
} // end namespace sql
} // end namespace oceanbase
} // end namespace sql
} // end namespace oceanbase
#endif /* _OB_EXPR_GET_SYS_VAR_H */