1 | #pragma once |
---|---|
2 | |
3 | #include <Core/Types.h> |
4 | #include <Common/typeid_cast.h> |
5 | #include <memory> |
6 | #include <typeindex> |
7 | |
8 | |
9 | namespace DB |
10 | { |
11 | /// Access entity is a set of data which have a name and a type. Access entity control something related to the access control. |
12 | /// Entities can be stored to a file or another storage, see IAccessStorage. |
13 | struct IAccessEntity |
14 | { |
15 | IAccessEntity() = default; |
16 | IAccessEntity(const IAccessEntity &) = default; |
17 | virtual ~IAccessEntity() = default; |
18 | virtual std::shared_ptr<IAccessEntity> clone() const = 0; |
19 | |
20 | std::type_index getType() const { return typeid(*this); } |
21 | static String getTypeName(std::type_index type); |
22 | const String getTypeName() const { return getTypeName(getType()); } |
23 | |
24 | template <typename EntityType> |
25 | bool isTypeOf() const { return isTypeOf(typeid(EntityType)); } |
26 | bool isTypeOf(std::type_index type) const { return type == getType(); } |
27 | |
28 | virtual void setName(const String & name_) { full_name = name_; } |
29 | virtual String getName() const { return full_name; } |
30 | String getFullName() const { return full_name; } |
31 | |
32 | friend bool operator ==(const IAccessEntity & lhs, const IAccessEntity & rhs) { return lhs.equal(rhs); } |
33 | friend bool operator !=(const IAccessEntity & lhs, const IAccessEntity & rhs) { return !(lhs == rhs); } |
34 | |
35 | protected: |
36 | String full_name; |
37 | |
38 | virtual bool equal(const IAccessEntity & other) const; |
39 | |
40 | /// Helper function to define clone() in the derived classes. |
41 | template <typename EntityType> |
42 | std::shared_ptr<IAccessEntity> cloneImpl() const |
43 | { |
44 | return std::make_shared<EntityType>(typeid_cast<const EntityType &>(*this)); |
45 | } |
46 | }; |
47 | |
48 | using AccessEntityPtr = std::shared_ptr<const IAccessEntity>; |
49 | } |
50 |