Help with many-to-many

spemaraj · **Joined:** Tue May 03, 2005 2:24 pm **Posts:** 3

Hello,

I have a simple many-to-many mapping defined and the query seems to work fine but the setters for the setChild(Collection col) is getting an empty collection.

Tables are :
Parent , Parent_child_link, Child.

Config files for Parent

Code:

<class mutable="false" name="Parent" table="Parent" >

       <property name="name" column="NAME" type="string" length="55" not-null="true"/>
       <property name="description" column="DESCRIPTION" type="string" length="255"/>
      ....
      ...
      ..
   <set name="child" inverse="false" table="parent_child_link" outer-join="false"> 
          <key column="parent_id" />          
          <many-to-many class="child" column="child_id"/>             
       </set>
       ...
       ..       
       

I have debug statements in the child and the object is getting created, it is not being added to the collection.

Does anybody know what the issue is.

spemaraj · **Joined:** Tue May 03, 2005 2:24 pm **Posts:** 3

I found the problem, I forgot to override equals and hashcode for UserTypeKey that I had defined for Objects.

Silly me...

Thanks