Hi ,
May be you are already aware, Workaround would be to use "unique constraint" in
sub class.
So in your example,
@Table(uniqueconstraint...@uniqueconstraint(columnNames={"ATTR_NAME",
"OWNER"})})
will go to OrgAttribute and look like:
@Table(name =
"ORG_ATTR",uniqueconstraint...@uniqueconstraint(columnNames={"ATTR_NAME",
"OWNER"})})
I think it would be nice if the uniqueconstraint can be defined in the super
class itself.
As far as it is bug or not, may be some openJPA expert can help answer that.
According to my view, it is more of any enhancement request rather than a bug.
My conclusion is based on following, Table annotation is for an entity class
and mappedSuperclass is a non-entity class.
Regards,
Ravi.
Hello, I think this is a bug:
I am getting
Caused by: <openjpa-1.2.1-r752877:753278 nonfatal user error>
org.apache.openjpa.persistence.ArgumentException: The column "ATTR_NAME" in a
unique constraint in "foo.bar.Attribute" on table "null" can not be found in
the list of available columns "[]".
at
org.apache.openjpa.jdbc.meta.ClassMappingInfo.getUniques(ClassMappingInfo.java:432)
at
org.apache.openjpa.jdbc.meta.ClassMapping.resolveMapping(ClassMapping.java:857)
at
org.apache.openjpa.meta.ClassMetaData.resolve(ClassMetaData.java:1631)
at
org.apache.openjpa.meta.MetaDataRepository.processBuffer(MetaDataRepository.java:717)
at
org.apache.openjpa.meta.MetaDataRepository.resolveMapping(MetaDataRepository.java:677)
at
org.apache.openjpa.meta.MetaDataRepository.resolve(MetaDataRepository.java:555)
at
org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepository.java:308)
at
org.apache.openjpa.meta.MetaDataRepository.resolveMeta(MetaDataRepository.java:581)
at
org.apache.openjpa.meta.MetaDataRepository.resolve(MetaDataRepository.java:541)
at
org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepository.java:308)
at
org.apache.openjpa.jdbc.meta.MappingRepository.getMapping(MappingRepository.java:285)
at
org.apache.openjpa.jdbc.meta.MappingTool.getMapping(MappingTool.java:676)
at
org.apache.openjpa.jdbc.meta.MappingTool.buildSchema(MappingTool.java:748)
at org.apache.openjpa.jdbc.meta.MappingTool.run(MappingTool.java:646)
at
org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:153)
at
org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:119)
at
org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:189)
at
org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:145)
I have a class
@MappedSuperclass
@Table(uniqueconstraint...@uniqueconstraint(columnNames={"ATTR_NAME",
"OWNER"})})
public abstract class Attribute<T> {
@Id
private String id;
@Column(name="ATTR_NAME")
private String name;
@Column(name="ATTR_VALUE")
private String value;
public abstract T getOwner();
public abstract void setOwner(T owner);
and it is extended by
@Entity
@Table(name = "ORG_ATTR")
public class OrgAttribute extends Attribute<Org> {
@ManyToOne
@JoinColumn(name = "OWNER")
private Org owner;
@Override
public Org getOwner() {
return owner;
}
@Override
public void setOwner(Org owner) {
this.owner = owner;
}
}
This mapping is working in both Eclipselink and Hibernate
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