On Sun, Apr 26, 2009 at 7:31 PM, Peter Karich <peat...@yahoo.de> wrote: > Hi,
Hi Peter. > I am in the process of trying a migration from hibernate to cayenne and > I read on the list that there is no tool provided for doing this > automatically, right? I'm not aware of one. > Now I see that the modeler says that there are IDs missing in > relationship tables. > With relationship table I mean the table between a Many-To-Many > relationship without a special meaning. In hibernate they will be mapped > to tables without an ID - only two FKs. > > Isn't this possible in cayenne? You'll want to set the two FKs in the many-to-many join table to be PKs in the model. Cayenne will treat this as a compound key (which is what it really is). These links might also help: http://cayenne.apache.org/doc/many-to-many-relationships.html http://cayenne.apache.org/doc/cayennemodeler-flattened-relationships.html > And is cayenne's schema migration [1] as powerful as e.g. liquibase ? I've not heard of liquibase before, sorry. > Regards, > Peter. > > > [1] > http://cayenne.apache.org/doc/migrate-changes-between-model-and-database.html > >
