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32 
33 #pragma once
34 
35 #include "dbCore.h"
36 #include "dbId.h"
37 #include "dbTypes.h"
38 #include "odb.h"
39 
40 namespace odb {
41 
42 template <class T>
43 class dbTable;
44 class _dbDatabase;
45 class _dbProperty;
46 class dbPropertyItr;
47 class dbIStream;
48 class dbOStream;
49 class dbDiff;
50 class _dbNameCache;
51 
52 enum _PropTypeEnum
53 {
54   // Do not change the order of this enum.
55   DB_STRING_PROP = 0,
56   DB_BOOL_PROP = 1,
57   DB_INT_PROP = 2,
58   DB_DOUBLE_PROP = 3
59 };
60 
61 struct _dbPropertyFlags
62 {
63   _PropTypeEnum _type : 4;
64   uint _owner_type : 8;
65   uint _spare_bits : 20;
66 };
67 
68 class _dbProperty : public _dbObject
69 {
70  public:
71   _dbPropertyFlags _flags;
72   uint _name;
73   dbId<_dbProperty> _next;
74   uint _owner;
75 
76   union
77   {
78     char* _str_val;
79     uint _bool_val;
80     int _int_val;
81     double _double_val;
82   } _value;
83 
84   _dbProperty(_dbDatabase*);
85   _dbProperty(_dbDatabase*, const _dbProperty& n);
86   ~_dbProperty();
87 
88   bool operator==(const _dbProperty& rhs) const;
89   bool operator!=(const _dbProperty& rhs) const { return !operator==(rhs); }
90   bool operator<(const _dbProperty& rhs) const;
91   void differences(dbDiff& diff,
92                    const char* field,
93                    const _dbProperty& rhs) const;
94   void out(dbDiff& diff, char side, const char* field) const;
95 
96   static dbTable<_dbProperty>* getPropTable(dbObject* object);
97   static _dbNameCache* getNameCache(dbObject* object);
98   static dbPropertyItr* getItr(dbObject* object);
99   static _dbProperty* createProperty(dbObject* object,
100                                      const char* name,
101                                      _PropTypeEnum type);
102 };
103 
104 dbOStream& operator<<(dbOStream& stream, const _dbProperty& prop);
105 dbIStream& operator>>(dbIStream& stream, _dbProperty& prop);
106 
107 }  // namespace odb
108