Hi Ken, I had some code somewhere that did this, but can't find it offhand.
Nutshell version, I was storing the information in this format: EntityName:KeyName:KeyValue You can get that information from the Cayenne[1] (or DataObjectUtils if on 3.0) helper class. That format requires a single PK and likewise a single integer PK value. When I needed the object back, I split on the colons and used the parts to construct a new ObjectId(entityName, key, value) and passed that to Cayenne.objectForPK(context, objectId). mrg [1] http://cayenne.apache.org/docs/3.1/api/org/apache/cayenne/Cayenne.html On Tue, Dec 12, 2017 at 1:44 PM, Ken Anderson <[email protected]> wrote: > Everyone, > > I’ve been looking around the Cayenne API, but have not been able to find a > way to serialize an object ID into a string, and then turn that string back > into an object ID or object. What’s the best/right way to do this? For > instance, if you want to store a reference to a database object in a text > file… > > Thanks, > Ken > Confidentiality Notice: This e-mail and accompanying documents contain > confidential information intended for a specific individual and purpose. > This e-mailed information is private and protected by law. If you are not > the intended recipient, you are hereby notified that any disclosure, > copying, or distribution, or the taking of any action based on the contents > of this information, is strictly prohibited. >
