[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5764) AssertionFailure: Unexpected nested component on the referenced entity when mapping a @MapsId

[Karsten Wutzke (JIRA)]

AssertionFailure: Unexpected nested component on the referenced entity when mapping a @MapsId
---------------------------------------------------------------------------------------------

                 Key: HHH-5764
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5764
             Project: Hibernate Core
          Issue Type: Bug
          Components: annotations, core, metamodel
    Affects Versions: 3.6.0
         Environment: Hibernate 3.6, JavaSE, HSQLDB, Ant (see SSCCE attached)
            Reporter: Karsten Wutzke
            Priority: Critical
         Attachments: transmuc-hib-embeddedid-transitive-comp-pk-broken.zip

I have three tables:

    CREATE TABLE PostAddresses
    (
      contact_id INTEGER NOT NULL,
      ordinal_nbr SMALLINT NOT NULL,
      PRIMARY KEY (contact_id, ordinal_nbr)
    );

    CREATE TABLE Foos
    (
      contact_id INTEGER NOT NULL,
      ordinal_nbr SMALLINT NOT NULL,
      PRIMARY KEY (contact_id, ordinal_nbr),
      FOREIGN KEY (contact_id, ordinal_nbr) REFERENCES PostAddresses
(contact_id, ordinal_nbr)
    );

    CREATE TABLE Bars
    (
      contact_id INTEGER NOT NULL,
      ordinal_nbr SMALLINT NOT NULL,
      numba INTEGER NOT NULL,
      PRIMARY KEY (contact_id, ordinal_nbr, numba),
      FOREIGN KEY (contact_id, ordinal_nbr) REFERENCES Foos (contact_id,
ordinal_nbr)
    );

Simple logic: Bars -> Foos -> PostAddresses all by (contact_id, ordinal_nbr),
whatever it means.

Here the six entity and respective composite key classes.

    @Entity
    @Table(name = "PostAddresses")
    public class PostAddress implements Serializable
    {
        @EmbeddedId
        private PostAddressId embeddedId;

        ...
    }

    @Embeddable
    public class PostAddressId implements Serializable
    {
        @Column(name = "contact_id")
        private Integer contactId;

        @Column(name = "ordinal_nbr")
        private Integer ordinalNbr = 1;

        ...
    }

    @Entity
    @Table(name = "Foos")
    public class Foo implements Serializable
    {
        @EmbeddedId
        private FooId embeddedId;

        @MapsId(value = "postAddressId")
        @OneToOne
        @JoinColumns(value = {@JoinColumn(name = "contact_id",
referencedColumnName = "contact_id"), @JoinColumn(name = "ordinal_nbr",
referencedColumnName = "ordinal_nbr")})
        private PostAddress postAddress = null;

        ...
    }

    @Embeddable
    public class FooId implements Serializable
    {
        @Embedded
        private PostAddressId postAddressId; //just one field!

        ...
    }

    @Entity
    @Table(name = "Bars")
    public class Bar implements Serializable
    {
        @EmbeddedId
        private BarId embeddedId;

        ...
    }

    @Embeddable
    public class BarId implements Serializable
    {
        @Embedded
        private FooId fooId;

        @Column(name = "numba")
        private Integer numba;

        ...
    }

It's really nothing special, Bar references Foo, Foo references PostAddress,
all via composite key class. Since the foreign keys are composite and part of
the PK, I must nest the ID classes into the ID classes. I thought this is
correct. However, I get the following stack trace with Hibernate 3.6:

    org.hibernate.AssertionFailure: Unexpected nested component on the referenced entity when mapping a @MapsId: tld.transmuc.model.Foo
        at org.hibernate.cfg.CopyIdentifierComponentSecondPass.doSecondPass(CopyIdentifierComponentSecondPass.java:101)
        at org.hibernate.cfg.Configuration.processSecondPassesOfType(Configuration.java:1424)
        at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1388)
        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)
        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.transmuc.Main.main(Main.java:27)
    Exception in thread "main" javax.persistence.PersistenceException: [PersistenceUnit: transmuc] 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.transmuc.Main.main(Main.java:27)
    Caused by: org.hibernate.AssertionFailure: Unexpected nested component on the referenced entity when mapping a @MapsId: tld.transmuc.model.Foo
        at org.hibernate.cfg.CopyIdentifierComponentSecondPass.doSecondPass(CopyIdentifierComponentSecondPass.java:101)
        at org.hibernate.cfg.Configuration.processSecondPassesOfType(Configuration.java:1424)
        at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1388)
        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

Hibernate is telling me about a problem with the @MapsId annotation and the Foo class:

org.hibernate.AssertionFailure: Unexpected nested component on the referenced entity when mapping a @MapsId: tld.transmuc.model.Foo

It appears to be a bug. Even if I omit the @Embedded annotation from the ID classes, the exception is still there.

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