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One-to-many for different types : is there a design pattern?

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somersjeff

Post subject: One-to-many for different types : is there a design pattern?

Posted: Wed May 12, 2010 6:05 am

Newbie

Joined: Sun Sep 27, 2009 1:59 pm
Posts: 2

I have 3 types of Forms :
- CustomerForm.java
- SupplierForm.java
- ProductForm.java

These are all persisted towards the database

Now all these forms have a property
List<Attachments> attachments

Attachment :
- name
- url
- description

How do I need to map this is Hibernate since I want to map 3 tables towards 1 table of attachment. The table containing the attachment, I can add a column id, but I'm nut sure this id is unique, since ProductForm, SupplierForm, .. can generate the same id

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