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 OOPvar orm = new ObjectRelationalMapper();var mapper = new Mapper(orm);//use the definition of table-to-class strategy class by classorm.TablePerClass<Person>();// Show the mapping to the consolevar 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<Address> addresses;public Person()    {        addresses = new Iesi.Collections.Generic.HashedSet<Address>();    }public int Id { get; set; }public Name Name { get; set; }public ICollection<Address> 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：ConfORM:“Mapping” Components