Unidirectional One - One Mapping table creation

[prashantpatel]

After creation a unidirectional one-one mapping like this.
public abstract class AccountEntityBean implements EntityBean
{
public abstract LocalCommunicationInfo getCommInfo();
public abstract void setCommInfo(LocalCommunicationInfo info);
}

public abstract class CommunicationInfoEntityBean implements EntityBean{}


<ejb-relation>
<ejb-relation-name>Account-CommunicationInfo</ejb-relation-name>
<ejb-relationship-role>
<ejb-relationship-role-name>
Account-has-CommunicationInfo
</ejb-relationship-role-name>
One
<relationship-role-source>
<ejb-name>AccountEntity</ejb-name>
</relationship-role-source>
<cmr-field>
<cmr-field-name>CommInfo</cmr-field-name>
</cmr-field>
</ejb-relationship-role>

<ejb-relationship-role>
<ejb-relationship-role-name>
Account-has-Communication
</ejb-relationship-role-name>
One
<relationship-role-source>
<ejb-name>CommunicationInfoEntity</ejb-name>
</relationship-role-source>
</ejb-relationship-role>
</ejb-relation>


The table account and communicationInfo are created but it does not create uni-directional relationship as
account has commoid as foreign key and the communicationinfo table also has a foreign key of account, the field in the communicationinfo is generated by the container Accountentity_comminfo which is have not specified by me in any *.xml file.
I dont want communicationinfo to have any account foreign key. Also seeing some earlier posts on such relation why do we need to have the same tag in jbosscmp-jdbc.xml is there any config in the
jbosscmp-jdbc.xml to get the undirectional relational i desire.

[prashantpatel]

Now i am getting the relationship i desire like this is it the right way.


<ejb-relation>
<ejb-relation-name>Account-CommunicationInfo</ejb-relation-name>
<foreign-key-mapping />
<ejb-relationship-role>
<ejb-relationship-role-name>
Account-has-CommunicationInfo
</ejb-relationship-role-name>
<fk-constraint>true</fk-constraint>
<!-- <key-fields>
<key-field>
<field-name>AccOid</field-name>
<column-name>AccOid</column-name>
</key-field>
</key-fields> -->
</ejb-relationship-role>
<ejb-relationship-role>
<ejb-relationship-role-name>
Account-has-Communication
</ejb-relationship-role-name>
<fk-constraint>false</fk-constraint>
</ejb-relationship-role>
</ejb-relation>

What is the diffrence b/w
"foreign-key-mapping and relation-table-mapping"
Prashant patel

[prashantpatel]

As you see i have commented the key-field tag which created field in communicationinfo after that jboss created a field in communicationinfo that i did not specify does jboss use this key for other purpose, but i am getting the relationship result i desired.

Prashant Patel