Hibernate Community • View topic

View unanswered posts | View active topics

Board index » Hibernate & Java Persistence » Hibernate Users

All times are UTC - 5 hours [ DST ]

One-to-one mapping

Page 1 of 1

[ 2 posts ]

Previous topic | Next topic

Author

Message

prondzyn

Post subject: One-to-one mapping

Posted: Thu Jan 10, 2008 8:08 pm

Newbie

Joined: Thu Jan 10, 2008 7:48 pm
Posts: 3

I have tables:

User
-userId PK
-username
-password

Student
-studentId PK
-firstname
-secondname
-dateofbirth
-userId

Teacher
-teacherId PK
-name
-phone
-email
-userId

Parent
-parentId PK
-name
-address
-phone
-userId

I want join table like this:

USER <--one-to-one--> STUDENT (with userId)
USER <--one-to-one--> PARENT (with userId)
USER <--one-to-one--> TEACHER(with userId)

How can I do it?? Do I must us <union-subclass> or <joined-subclass> or something like this??

Top

andymc

Post subject:

Posted: Fri Jan 11, 2008 6:36 am

Newbie

Joined: Fri Jan 11, 2008 5:50 am
Posts: 9

What are you wanting to know? How to write the Hibernate Mapping document?

I'll start you off...

Code:

<class name="user">
    <id name="id" type="long">
        <generator class="native"/>
    </id>
    <property name="username" />
    <property name="password" />
</class>

<class name="student">
    <id name="studentId">
        <generator class="native"/>
    </id>
    <property name="firstname" />
    <property name="secondname" />
    <property name="dateofbirth" />
    <one-to-one name="userId" 
        class="user" />
</class>

Hope this helps

Andy[/code]

Top

Page 1 of 1

[ 2 posts ]

Board index » Hibernate & Java Persistence » Hibernate Users

All times are UTC - 5 hours [ DST ]

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum