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" 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;
> }
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