MySQL  8.0.21
Source Code Documentation
weak_object.h
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22 
23 #ifndef DD__WEAK_OBJECT_INCLUDED
24 #define DD__WEAK_OBJECT_INCLUDED
25 
26 #include "sql/dd/string_type.h" // dd::String_type XXX: temporary, debug-only
27 
28 namespace dd {
29 
30 ///////////////////////////////////////////////////////////////////////////
31 
32 /**
33  Base class for all data dictionary objects.
34 
35  @note This class may be inherited along different paths
36  for some subclasses due to the diamond shaped
37  inheritance hierarchy; thus, direct subclasses
38  must inherit this class virtually.
39 */
40 
41 class Weak_object {
42  public:
43  // XXX: temporary, debug-only.
44  virtual void debug_print(String_type &outb) const = 0;
45 
46  public:
48 
49  Weak_object(const Weak_object &) = default;
50 
51  virtual ~Weak_object() {}
52 };
53 
54 ///////////////////////////////////////////////////////////////////////////
55 
56 } // namespace dd
57 
58 #endif // DD__WEAK_OBJECT_INCLUDED
Char_string_template< String_type_allocator > String_type
Definition: string_type.h:50
Weak_object()
Definition: weak_object.h:47
virtual ~Weak_object()
Definition: weak_object.h:51
virtual void debug_print(String_type &outb) const =0
Base class for all data dictionary objects.
Definition: weak_object.h:41
The version of the current data dictionary table definitions.
Definition: dictionary_client.h:39