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What is the solution of many subclass parent to same child?

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fafnir

Post subject: What is the solution of many subclass parent to same child?

Posted: Wed Mar 24, 2004 5:04 am

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Joined: Wed Dec 03, 2003 9:41 pm
Posts: 87

In my case, a parent/child association. But there are many subclass parent and all have same child.

Code:

DB schema
Parent table
id, parnet_name, flag .....
Child table
id, parent_id, name .....

Different "flag" indicate different subclass of parent. In xml of child table, how to config many-to-one? If it associates to super class of parent, how to write hql or criteria to join child to a special subclass parent?

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