many-to-one inside of subclass???

hardie82 · **Joined:** Thu Dec 22, 2005 7:23 am **Posts:** 4

hi @all,
i'm a newbie in topic hibernate and develop my first project whit it. now i have a problem in storing datas to my database. my class-hierarchy looks like the following:

-------------------------
| person |
| |
-------------------------
/|\
|
------------------------- -------------------------
| customer |1 n| account |
| |--------------------| |
------------------------- -------------------------

customer inherit from person. customer has one or more accounts. the mapping lokes like:

Code:

<class name="Person" table="Person">
  ......
  <joined-subclass name="customer" table="customer">
   <key column="id" ></key>
   <property name="..."  type="...">
     <column name="..."/>
   </property>
  ......
  
   <many-to-one name="account" column="account_id" class="Account" cascade="all" lazy="false"/>
  </joined-subclass>
  ......
</class>

with this mapping i get the follow exception:

org.hibernate.exception.GenericJDBCException: could not insert: [customer]

when i delete the line containing the "many-to-one"-relation it works.

thx for help

radu · **Joined:** Wed Jun 15, 2005 4:17 am **Posts:** 156

if a customer can have many accounts the relationship is one-to-many inside a set or other collection.

HTH,
radu

KPixel · **Posted:** Fri Dec 23, 2005 8:08 am

Can you post the code you are executing and the full exception trace?