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many-to-one not using <id>

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garazy

Post subject: many-to-one not using <id>

Posted: Fri Jul 21, 2006 1:28 am

Newbie

Joined: Fri Jul 21, 2006 1:20 am
Posts: 1

Take this hypothetical situation. A Person has a collection of Courses. They join on person name (rubbish, i know, but hypothetical).

How would one go about creating a one to many relationship within person, using the PersonName as the joining field. Bearing in mind this is not my <id> field?

What I have below is as far as I have got, property-ref appears not to work in version 1.0.2, what is the recommendation?

Thank you very much,

Gary

nHibernate 1.0.2

Code:

This section is part of my Person class ->

      <set name="Courses" table="Course" inverse="false" lazy="true">
         <key column="PersonName" property-ref="Name"/>
         <one-to-many class="NHibTest.Course, NHibTestLib"/>
      </set>


..................................................................


<class name="NHibTestLib.Course, NHibtestLib" table="Course" lazy="true">
      <id name="Id" column="Id" type="Guid" length="32">
         <generator class="guid" />
      </id>

      <property name="PersonName" column="Person" insert="false" update="false"/>
      <property name="Name" column="Name" type="String" length="40"/>
   </class>

SQL Server 2005

Quote:

create table Course (
[Name] nvarchar(40),
Id uniqueidentifier,
[PersonName] nvarchar(40),
PRIMARY KEY (Id)
)

create table Person (
[Name] nvarchar(40),
Id uniqueidentifier,
pencil uniqueidentifier,
[domicile] nvarchar(40),
[currency] nvarchar(40),
[bigdata] nvarchar(40),
[age] int,
ptype char,
PRIMARY KEY (Id)
)
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