Hi Vincenzo! No worries, your english is fine.
The writeExternal is invoked to serialize away the entity. Whether the receiver side gets just the normal entity fields (unenhanced so to say) or also the _loaded and _dirty fields is a question of the configuration. I usually use the following setup: https://github.com/struberg/lightweightEE/blob/master/backend-api/src/main/resources/META-INF/persistence.xml#L26 Together with the openjpa-maven-plugin to enhance the classes at build time https://github.com/struberg/lightweightEE/blob/master/backend-api/pom.xml#L66 I should clean up the connection section config. That's a left over from many years back. But it should basically work. I've wrote up a bit about enhancement strategies many years ago, maybe it helps: https://struberg.wordpress.com/2012/01/08/jpa-enhancement-done-right/ Do you have a small sample which we can use to reproduce the problem? txs and LieGrue, strub > On Saturday, 15 October 2016, 19:25, Vincenzo D'Aniello > <ict.management.tre...@gmail.com> wrote: > > Hi, i've set this property in the persistence unit: > > <property name="openjpa.DetachState" > value="loaded(DetachedStateField=true)"/> > > but when the entity object try to be detached, an exception > NoSuchMethodException is thrown because openjpa try to execute the > writeExternal method on the entity class object. > > I have not understand abaut enhancer, Enhancement. There is a complete > example how do remote ejb call with ejb entity beans? > > I use Tomee 1.7.4 naturally with openejb, openjpa, sorry for my english. > > > > -- > View this message in context: > http://openjpa.208410.n2.nabble.com/Null-field-not-persisted-for-Dates-tp5993519p7589809.html > Sent from the OpenJPA Users mailing list archive at Nabble.com. >
