Hi "There is currently a bug preventing persistent fields on superclasses from being saved to the datastore. This will be fixed in a future release." from http://code.google.com/appengine/docs/java/datastore/usingjdo.html#Unsupported_Features_of_JDO
regards didier On Sep 8, 2:14 am, lisandrodc <[email protected]> wrote: > Thanks Cyrille, but.. > Might someone confirm to me authentically that really inheritance is > not supported? > If it is like that, a serious enough failing.... > On the part of the documentation of google it does not confirm it but > he > does not deny it either... > The error is "error. > org.datanucleus.exceptions.NoPersistenceInformationException: The > class "com.onwebconsulting.inventory.model.Part" is required to be > persistable yet no Meta-Data/Annotations can be found for this class. > Please check that the Meta-Data/annotations is defined in a valid > file" > > Regards > Lisandro > On 7 sep, 09:48, Cyrille Vincey <[email protected]> wrote: > > > I have read somewhere in the appengine doc that class inheritance is not > > really supported by JDO yet... > > > On 07/09/10 00:39, "lisandrodc" <[email protected]> wrote: > > > > Hi all, > > > I've used hibernate for a while, and I'm having a bit of trouble > > > switching to JDO. I have several entities that all entities will > > > share. Rather than a parent table, I'd prefer these columns be > > > embedded directly in each entity. As such, I've defined my abstract > > > entity and child entity in the classes below. However, whenever I > > > try > > > to run my unit tests or the jetty environment, I always receive the > > > following error. > > > org.datanucleus.exceptions.NoPersistenceInformationException: The > > > class "com.onwebconsulting.inventory.model.Part" is required to be > > > persistable yet no Meta-Data/Annotations can be found for this class. > > > Please check that the Meta-Data/annotations is defined in a valid > > > file > > > location.]] > > > According to my Eclipse console I have 1 class that has been > > > Enhanced. Any ideas what I'm doing wrong? > > > DataNucleus Enhancer completed with success for 1 classes. Timings : > > > input=268 ms, enhance=51 ms, total=319 ms. Consult the log for full > > > details > > > @Inheritance(strategy = InheritanceStrategy.NEW_TABLE) > > > public class Part extends Auditable{ > > > @Persistent > > > private String name; > > > @Persistent > > > private String description; > > > @Persistent > > > private String partNumber; > > > @Persistent > > > private long quantity; > > > @Persistent > > > private String manuacturersPartNumber; > > > @Persistent > > > private String manufacturerName; > > > @Persistent > > > private String suppliersPartNumber; > > > @Persistent > > > private String supplierName; > > > @Persistent > > > private String supplierWebsite; > > > @Persistent > > > private float salePrice; > > > @Persistent > > > private float supplierPrice; > > > ... Getters and Setters > > > } > > > @PersistenceCapable(identityType = IdentityType.APPLICATION) > > > @Inheritance(strategy = InheritanceStrategy.SUBCLASS_TABLE) > > > public abstract class Auditable { > > > @PrimaryKey > > > @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) > > > private Key id; > > > @Persistent > > > private Date createDate; > > > @Persistent > > > private Date updatedDate; > > > @Persistent > > > private long version; > > > public Key getId() { > > > return id; > > > } > > > public Date getCreateDate() { > > > return createDate; > > > } > > > public Date getUpdatedDate() { > > > return updatedDate; > > > } > > > public long getVersion(){ > > > return version; > > > } -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
