Hi Phill, The snippets from your entities are correct. Which version of OpenJPA are you using, and how do you do enhancement?
Could the app be picking up an old version of Merchant that doesn't have the annotation, or an XML mapping file that reset it to a different value? -mike On Wed, Apr 20, 2011 at 9:39 AM, Phill <[email protected]> wrote: > I'm having some trouble with joined inheritance, my mappings are as follows > but OpenJPA doesn't seem to be picking up my @DiscriminatorValue. > Probably missing something obvious but can't see what... any suggestions > much appreciated > > @Entity > @Table(name = "user_account") > @Inheritance(strategy = InheritanceType.JOINED) > @DiscriminatorColumn(name = "account_type", discriminatorType = > DiscriminatorType.STRING) > public abstract class UserAccount implements Serializable { > ... > > @Entity > @Table(name = "merchant") > @DiscriminatorValue("MERCHANT") > @PrimaryKeyJoinColumn(name = "merchant_id", referencedColumnName = > "account_id") > public class Merchant extends UserAccount { > ... > > java.lang.ClassNotFoundException: Could not map discriminator value > "MERCHANT" to any known subclasses of the requested class > "my.app.model.UserAccount" (known discriminator values: [UserAccount]). > at > org.apache.openjpa.jdbc.meta.strats.ValueMapDiscriminatorStrategy.getClass(ValueMapDiscriminatorStrategy.java:98) > at > org.apache.openjpa.jdbc.meta.strats.InValueDiscriminatorStrategy.getClass(InValueDiscriminatorStrategy.java:121) > at > org.apache.openjpa.jdbc.meta.Discriminator.getClass(Discriminator.java:398) > at > org.apache.openjpa.jdbc.meta.strats.SuperclassDiscriminatorStrategy.getClass(SuperclassDiscriminatorStrategy.java:63) > at > org.apache.openjpa.jdbc.meta.Discriminator.getClass(Discriminator.java:398) > at > org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initializeState(JDBCStoreManager.java:397) > at > org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initialize(JDBCStoreManager.java:333) > at > org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112) > at > org.apache.openjpa.datacache.DataCacheStoreManager.initialize(DataCacheStoreManager.java:360) > at > org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112) > at > org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57) > at > org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:1022) > at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:980) > at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:902) > at > org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1041) > at > org.apache.openjpa.jdbc.sql.AbstractResult.load(AbstractResult.java:280) > at > org.apache.openjpa.jdbc.sql.SelectImpl$SelectResult.load(SelectImpl.java:2381) > at > org.apache.openjpa.jdbc.sql.AbstractResult.load(AbstractResult.java:274) > at > org.apache.openjpa.jdbc.kernel.InstanceResultObjectProvider.getResultObject(InstanceResultObjectProvider.java:59) > at > org.apache.openjpa.lib.rop.EagerResultList.<init>(EagerResultList.java:36) > at org.apache.openjpa.kernel.QueryImpl.toResult(QueryImpl.java:1251) > at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:1007) > at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:863) > at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:794) > at > org.apache.openjpa.kernel.DelegatingQuery.execute(DelegatingQuery.java:542) > at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:305) > at > org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:319)
