[hibernate-issues] [Hibernate-JIRA] Created: (HHH-6178) Mapping bidirectional one-to-one relationship fails with an AnnotationException: Unknown mappedBy in: / referenced property unknown
Mapping bidirectional one-to-one relationship fails with an AnnotationException: Unknown
mappedBy in: / referenced property unknown
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Key: HHH-6178
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6178
Project: Hibernate Core
Issue Type: Bug
Components: core
Affects Versions: 3.6.0
Environment: Hibernate 3.6.0 Final, HSQLDB 2.0.1 RC, JavaSE
Reporter: Karsten Wutzke
Priority: Critical
Mapping a simple bidirectional one-to-one relationship fails with an AnnotationException
for no obvious reason.
DB design:
CREATE TABLE Persons
(
id INTEGER NOT NULL,
first_name VARCHAR(50) NOT NULL,
last_name VARCHAR(50) NOT NULL,
PRIMARY KEY (id)
);
CREATE TABLE Coaches
(
id INTEGER NOT NULL,
license_nbr VARCHAR(10) DEFAULT NULL NULL,
PRIMARY KEY (id),
FOREIGN KEY (id) REFERENCES Persons (id)
);
CREATE TABLE Players
(
id INTEGER NOT NULL,
registration_nbr VARCHAR(20) DEFAULT NULL NULL,
PRIMARY KEY (id),
FOREIGN KEY (id) REFERENCES Persons (id)
);
Mappings (relevant shown only):
@Entity
@Table(name = "Persons")
public class Person implements Serializable
{
@Id
@Column(name = "id")
private Integer id;
@Column(name = "first_name")
private String firstName;
@Column(name = "last_name")
private String lastName;
@OneToOne(mappedBy = "person")
private Coach coach = null;
@OneToOne(mappedBy = "person")
private Player player = null;
...
}
@Entity
@Table(name = "Players")
public class Player implements Serializable
{
@Column(name = "registration_nbr")
private String registrationNbr = null;
@Id
@OneToOne
@JoinColumn(name = "id")
private Person person = null;
...
}
@Entity
@Table(name = "Coaches")
public class Coach implements Serializable
{
@Column(name = "license_nbr")
private String licenseNbr = null;
@Id
@OneToOne
@JoinColumn(name = "id")
private Person person = null;
...
}
The exception thrown in a test app:
Exception in thread "main" javax.persistence.PersistenceException:
[PersistenceUnit: persons] Unable to configure EntityManagerFactory
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:374)
at
org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:56)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:32)
at tld.persons.Main.main(Main.java:34)
Caused by: org.hibernate.AnnotationException: Unknown mappedBy in:
tld.persons.model.Person.coach, referenced property unknown:
tld.persons.model.Coach.person
at org.hibernate.cfg.OneToOneSecondPass.doSecondPass(OneToOneSecondPass.java:159)
at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1686)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1393)
at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1345)
at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1477)
at
org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:193)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1096)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:278)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:362)
... 4 more
This exception is really surprising given the simplicity of this design. I've also
tested this with EclipseLink which has no problems with the mappings.
I'll attach an test case including the full code.
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