Can this kind of set up be handled in Cayenne?
Yes.
It looks like multiple data maps could be used for a single data
node but can one data map be
used in multiple nodes, multiple domains or multiple projects?
Yes, you just need to configure it in cayenne.xml. One possible
solution is to map all three DataMaps in a single Cayenne project, and
then swap cayenne.xml when assembling your project to a system-
specific one.
Can one have relationships between entities in different maps?
Yes, within a DataDomain.
Andrus
On Apr 14, 2009, at 2:20 AM, Weddle, Anthony wrote:
We have two systems that have very similar database schemas. They are
not completely identical, however. To deal with this, currently, with
Hibernate, we have a set of common definitions (and classes), and a
separate set of definitions (and classes) for each specific system.
Hibernate can be configured with two configurations, each adding to
the
other, for each system (the common configuration and the system
specific
configuration). The common classes are in the classpath for each
system.
Classes are generated with Middlegen (a separate generation has to be
done for each system, with the common classes coming from the classes
generated for one of the systems (always the same one).
Can this kind of set up be handled in Cayenne? It looks like multiple
data maps could be used for a single data node but can one data map be
used in multiple nodes, multiple domains or multiple projects? Can one
have relationships between entities in different maps?
Tony
