ManyToMany與屬性的關聯表

Question

我需要知道是否可以在多對多關係中添加屬性，或者我應該去添加具有關係的實體？ 在額外的實體的情況下，我怎樣才能獲得兩個引用的表參與密鑰（以獲得兩個表的複合密鑰）？

我跟着這篇文章，但它並沒有去深度不夠：提前http://blog.codefluententities.com/2012/06/14/many-to-many-relationships-with-codefluent-entities/

感謝，

Answer 1

你必須創建具有關係的實體。這個新的實體有一個組合鍵，所以你也必須設置setType="List"

<cf:entity name="Student"> 
    <cf:property name="Id" key="true" /> 
    <cf:property name="Name" /> 
    <cf:property name="Enrollments" typeName="{0}.EnrollmentCollection" relationPropertyName="Student" /> 
</cf:entity> 

<cf:entity name="Course"> 
    <cf:property name="Id" key="true" /> 
    <cf:property name="Name" /> 
    <cf:property name="Enrollments" typeName="{0}.EnrollmentCollection" relationPropertyName="Course" /> 
</cf:entity> 

<cf:entity name="Enrollment" setType="List"> 
    <cf:property name="Course" key="true" typeName="{0}.Course" relationPropertyName="Enrollments" /> 
    <cf:property name="Student" key="true" typeName="{0}.Student" relationPropertyName="Enrollments" /> 
    <cf:property name="Prop1" /> 
    <cf:property name="Prop2" /> 
</cf:entity>