Surely.
(1) We do a find method which returns an entity A from the database. (2) We also have an unmanaged entity instance B separately, that we created outside any persistence context, whose values we wish to use to update those in A, and then rewrite A to the database. (3) We just set the key of B to that of A (namely "48") and do a "merge." This worked to update A in TopLink Essentials. (4) Under OpenJPA, we get the exact error message: > An object of type "com.xxx.entity.entities.FeCmeCommittee" with oid > "48" > already exists in this context; another cannot be persisted. > (5) This seems wrong. The reason the two objects have the same id is precisely that we want to update the existing entity. THANK YOU. Don Craig L Russell wrote: > > Hi Don, > > Could you please be just a bit more specific about what you are > trying to do and what error you encounter? > > Thanks, > > Craig > > On Nov 7, 2006, at 2:50 PM, DonBrady wrote: > >> >> We are converting a TopLink Essentials application to OpenJPA >> >> Under Toplink Essentials, we could replace a managed entity with >> another >> that had the same identity (key) by doing a merge. >> >> When we try this in OpenJPA, we get the following error: >> >> An object of type "com.xxx.entity.entities.FeCmeCommittee" with oid >> "48" >> already exists in this context; another cannot be persisted. >> >> However, "48" is actually the identity or key, not the oid. The >> oid's are >> different. They key is the same and therefore it should be >> possible to >> replace it via a merge. >> >> Or am I missing something? >> >> Thanks, >> >> Don >> >> >> -- >> View this message in context: http://www.nabble.com/Replacing- >> Entities-while-Managed-tf2592059.html#a7229110 >> Sent from the open-jpa-dev mailing list archive at Nabble.com. >> > > Craig Russell > Architect, Sun Java Enterprise System http://java.sun.com/products/jdo > 408 276-5638 mailto:[EMAIL PROTECTED] > P.S. A good JDO? O, Gasp! > > > > -- View this message in context: http://www.nabble.com/Replacing-Entities-while-Managed-tf2592059.html#a7230848 Sent from the open-jpa-dev mailing list archive at Nabble.com.
