for 1:1 relation OJB has a feature called 'anonymous key' http://db.apache.org/ojb/howto-use-anonymous-keys.html
<field-descriptor
name="refFK"
column="REF_FK"
jdbc-type="INTEGER"
access="anonymous" />Thus you don't need to declare the FK in your class, only in metadata and DB.
For single JVM 2-tier (no serialized persistent capable objects) projects it is possible use this concept for other fields too (not only 1:1 references) - again, only in this case (OJB use in a object identity based map for these anonymous fields).
regards, Armin
Matthias Gottschlich wrote:
Hi there,
we are coming from j2ee-cmp and want to change to another o/r-mapping tool (perhaps ojb).
In the Documentation i read, that i have to declare the foreign key as an extra member of my class, if i want to use a reference to the other class.
Is this necessary? I came from EJB-CMP/CMR. There is no need to declare the foreign keys as class members. This is declared in the deployments descriptors and the mapping-definitions in the application servers. IS there a workaround to avoid the definition of foreign key class members?
regards Matthias
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