Hi Amedeo, I assume you want to know the PK before commit (as otherwise Cayenne would handle that for you transparently). In which case you have two options:
1. Map a meaningful PK, and just call a setter on the object with whatever meaningful value you might have. 2. Use PkGenerator and set the PK via Object's ObjectId. The code is a bit long, so you may need to package it in your own utility method. Something like this: // node, pkGen and pk attribute can be located once and cached in your own PK gen code for further resue DataNode node = serverRuntime .getDataDomain() .getDefaultNode(); PkGenerator pkGen = node .getAdapter() .getPkGenerator(); DbAttribute pkAttribute = node .getEntityResolver().getObjEntity(MyClass.class).getDbEntity().getPrimaryKeys().iterator().next(); // generate PK for your objects DataObject o = ... Object pk = pkGen.generatePk(node, pkAttribute); o.getObjectId().getReplacementIdMap().put(pkAttribute.getName(), pk); Andrus > On Nov 24, 2017, at 3:16 PM, Amedeo Mantica <amedeomant...@me.com> wrote: > > Hi all, > > Do you know how to obtain the primary key for a newly created object ? > > On EOF there were the method EOAdaptorChannel.primaryKeysForNewRowsWithEntity > > mostly user by higher level Wonder method eo.primaryKeyInTransaction() > > Anything similar in Cayenne ? > > Thank you > Amedeo
