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many-to-one and null object

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CountZero

Post subject: many-to-one and null object

Posted: Tue Jun 23, 2009 1:30 am

Newbie

Joined: Thu Jan 22, 2009 2:49 am
Posts: 13

Hello

In a class Bussiness am having a many-to-one relationship with class TaxOffice

Code:

<class name="Bussiness" table="BUSSINESS">
...
<many-to-one name="taxOffice"
                    class="TaxOffice"
                    lazy="false"
                    not-null="false"
                    column="TAX_OFFICE_ID"/>
...

</class>

<class name="TaxOffice" table="TAX_OFFICE">
....
</class>

How can i tell hibernate that object taxOffice is optional and sometimes must have null values?
I am using the not-null="false" but it does not work

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