http://forums.visual-paradigm.com/posts/32.html JForum - http://www.jforum.net element in hbm-XML of base class for every generalized(inheritence) relationship in ORM ? or it comes only if the mapped tables are different (i.e. with referential integrety)?

If yes , then what would happen if both base class and derived class are mapped to same table?

ORM
ClassBase ---------------------- table1
----------------------
----------------------
----------------------
DerivedClass ----------------------- table1

hbm-xml




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..

access="field"/>




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The element in hbm.xml is depends on how you specify the inheritance strategy in the class hierarchy. It only be generated if you are using table per sub-class strategy together with the discriminator column defined. Since using table per sub-class strategy already no need to have the discriminator column. May I know why you would like to generate the ?

Best regards,
Rain Wong]]> http://forums.visual-paradigm.com/posts/2878#21974.html http://forums.visual-paradigm.com/posts/2878#21974.html
As per your documentation, we suppose that derived class should be table per class because we have only one table. However when we try generating code with base class as 'table per class' & also derived class as 'table per class' we are getting errors that asks to 'syncronise derived class with ERD'

please help.

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