Component语义
使用ConfORM“映射”组件,我们无需特别设置,ConfORM内部会根据Domain定义来判定组件,一般而言,没有主键的类就是组件。
[Test] public void ComponentMappingDemo() { //show how work with components and how ConfORM understands OOP var orm = new ObjectRelationalMapper(); var mapper = new Mapper(orm); //use the definition of table-to-class strategy class by class orm.TablePerClass(); // Show the mapping to the console var mapping = mapper.CompileMappingFor(new[] { typeof(Person) }); Console.Write(mapping.AsString()); }
一些Domain范例
我们使用各种集合定义Domain:
1.Mapping a class with components
Person实体有两个组件:
public class Person { public int Id { get; set; } public Name Name { get; set; } public Address Address { get; set; } } public class Name { public string First { get; set; } public string Last { get; set; } } public class Address { public string Street { get; set; } public int CivicNumber { get; set; } }
Mapping
输出HbmMapping的映射字符串结果:
2.Mapping a class with double usage of same component
在上面Domain的基础上新增一个Name类型的属性:
public class Person { public int Id { get; set; } public Name Name { get; set; } public Name ShowBusinessAlias { get; set; } public Address Address { get; set; } }
Mapping
输出HbmMapping的映射字符串结果:
3.Collection of components
使用一个集合,而不是单一组件:
public class Person { private Iesi.Collections.Generic.ISet addresses; public Person() { addresses = new Iesi.Collections.Generic.HashedSet(); } public int Id { get; set; } public Name Name { get; set; } public ICollection Addresses { get { return addresses; } } }
Mapping
输出HbmMapping的映射字符串结果:
4.Bidirectional relation
实现实体与组件的双向关联关系:
public class Person { public int Id { get; set; } public Name Name { get; set; } public Name ShowBusinessAlias { get; set; } public Address Address { get; set; } } public class Name { public Person Person { get; set; } public string First { get; set; } public string Last { get; set; } }
Mapping
输出HbmMapping的映射字符串结果:
结语
这篇文章展示ConfORM的Components语义应用,映射了一些Domain示例。接下来继续介绍ConfORM。Are you ConfORM?
参考资料
Fabio Maulo: