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FesterWim
 Post subject: Persisting a Map with interface as value
PostPosted: Mon Feb 02, 2004 4:50 am 
Newbie

Joined: Tue Jan 06, 2004 5:52 am
Posts: 17
Location: Belgium
Hi,

I have a class containing a Map. This Map has a String as key, the value is some interface, currently implemented by 3 concrete classes. How can I do the hibernate mapping in this case? If I try to map the interface, I get a NullpointerException (probably because there is no primairy key definined).

So I want to do this for the class that contains the Map:

Code:
<map name="myMap">
   <key column="id"/>
   <index type="string"/>
   <element  type="myInterface"/>
</map>


but then I get an error ofcourse that myInterface is not a persistent class.

kind regards,

Wim
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l.masini
 Post subject:
PostPosted: Mon Feb 02, 2004 6:19 am 
Beginner
Beginner

Joined: Tue Nov 11, 2003 4:49 am
Posts: 47
Location: Florence, Italy
I did this way
Code:
<joined-subclass name="ClassAImpl" table="classa" proxy="ClassA">
   <key column="genericParam" />

   <joined-subclass name="ClassBImpl" table="classb" proxy="ClassB">
      <key column="genericParam" />
   </joined-subclass>                                

   <joined-subclass name="ClassCImpl"
                table="classc"
                proxy="ClassC">
      <key column="genericParam" />
      <map name="condizioni" inverse="true"  lazy="true" cascade="all">
         <key column="base"/>
         <index column="nomeCondizione" type="string"/>
         <one-to-many class="ClassAImpl" />               
      </map>

   </joined-subclass>                                

   <joined-subclass name="ClassDImpl" table="classd" proxy="ClassD">
      <key column="genericParam" />
   </joined-subclass>                                

   <joined-subclass name="ClassEImpl" table="classe" proxy="ClassE">
      <key column="genericParam" />
   </joined-subclass>                                

</joined-subclass>


Hope this can help.
Ciao.
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