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1 import db_constraints;
2 
3 class Shop
4 {
5     private int _Id;
6     @PrimaryKeyColumn @NotNull
7     @property int Id()
8     {
9         return _Id;
10     }
11     @property void Id(int value)
12     {
13         setter(_Id, value);
14     }
15     private string _Name;
16     @property string Name()
17     {
18         return _Name;
19     }
20     @property void Name(string value)
21     {
22         setter(_Name, value);
23     }
24     private string _Quality;
25     // Quality can only have a value that
26     // is among the enumeration below.
27     // Using false so this will not throw an
28     // exception but instead just change _Quality
29     // to an empty string.
30     @EnumConstraint!(false, "High", "Average", "Low")
31     @property string Quality()
32     {
33         return _Quality;
34     }
35     @property void Quality(string value)
36     {
37         setter(_Quality, value);
38     }
39     this(int Id_, string Name_, string Quality_)
40     {
41         this._Id = Id_;
42         this._Name = Name_;
43         this._Quality = Quality_;
44         initializeKeyedItem();
45     }
46 
47     mixin KeyedItem!();
48 }
49 
50 auto Boneys = new Shop(1, "Boneys", "High");
51 assert(Boneys.Quality == "High");
52 
53 auto ACRiver = new Shop(2, "AC River", "Average");
54 assert(ACRiver.Quality == "Average");
55 
56 auto AT34 = new Shop(3, "AT 34", "**");
57 // since we have this as a non-strict enum, the
58 // quality is set to an empty string when
59 // given a string that is not in the enumeration
60 assert(AT34.Quality == "");