Putting @Version information into an @Embedded object?

dantelope · **Joined:** Sun Dec 17, 2006 3:14 pm **Posts:** 3

I designed a component class called VersionInfo, and then include it as a member of classes I want versioned. When I try this, however, Hibernate is unable to handle it and dies with the exception included at the end of this message.

I then commented out VersionInfo and replaced it with a simple Long version member with a @Version annotation and, naturally, it worked. I think I'm missing something really obvious...

Has anyone deferred versioning to an embeddable component and gotten it to work? The documentation is a bit light, and all of the examples I've seen so far point to an immediate member version in the class you want versioned.

Thanks!

VersionInfo.java

Code:

@Embeddable
@AccessType("property")
public class VersionInfo
    implements Serializable
{
    private static final long serialVersionUID = 308500469244836364L;

    private Long mVersion = 0L;
    private Date mWhenCreated;
    private Date mWhenLastModified;
    
    public VersionInfo()
    {        
    }
    
    public VersionInfo( long version, Date whenCreated, Date whenLastModified )
    {
        setVersion( version );
        setWhenCreated( whenCreated );
        setWhenLastModified( whenLastModified );
    }
       
    
    /**
     * @getter
     * @return the version
     */
    @Version
    @Column(name="Version")
    public Long getVersion()
    {
        return mVersion;
    }
    /**
     * @setter
     * @param version the version to set
     */
    private void setVersion( Long version )
    {
        mVersion = version;
    }
    /**
     * @getter
     * @return the whenCreated
     */
    @Column(name="WhenCreated")
    @Temporal(TemporalType.TIMESTAMP)
    public Date getWhenCreated()
    {
        return mWhenCreated;
    }
    /**
     * @setter
     * @param whenCreated the whenCreated to set
     */
    private void setWhenCreated( Date whenCreated )
    {
        mWhenCreated = whenCreated;
    }
    /**
     * @getter
     * @return the whenLastModified
     */
    @Column(name="WhenLastModified")
    @Temporal(TemporalType.TIMESTAMP)
    public Date getWhenLastModified()
    {
        return mWhenLastModified;
    }
    /**
     * @setter
     * @param whenLastModified the whenLastModified to set
     */
    private void setWhenLastModified( Date whenLastModified )
    {
        mWhenLastModified = whenLastModified;
    }

User.java

Code:

@Entity
@Table(name = "users")
@AccessType("property")
public class User
    implements Serializable
{
    private static final long serialVersionUID = -4424425974193496152L;

    private int mId = 0;
    private String mUsername;
    private String mFirstName;
    private String mLastName;
    private Date mWhenLastLogin;
    private VersionInfo mVersionInfo = new VersionInfo();

    public User()
    {
    }

    public User( int id )
    {
        setId( id );
    }

    /**
     * @getter
     * @return the firstName
     */
    @Column(name = "FirstName", length = 100)
    public String getFirstName()
    {
        return mFirstName;
    }

    /**
     * @setter
     * @param firstName
     *            the firstName to set
     */
    public void setFirstName( String firstName )
    {
        mFirstName = firstName;
    }

    /**
     * @getter
     * @return the id
     */
    @Id
    @GeneratedValue
    @Column(name = "UserID")
    public int getId()
    {
        return mId;
    }

    /**
     * @setter
     * @param id
     *            the id to set
     */
    private void setId( int id )
    {
        mId = id;
    }

    /**
     * @getter
     * @return the lastName
     */
    @Column(name = "LastName", length = 100)
    public String getLastName()
    {
        return mLastName;
    }

    /**
     * @setter
     * @param lastName
     *            the lastName to set
     */
    public void setLastName( String lastName )
    {
        mLastName = lastName;
    }

    /**
     * @getter
     * @return the password
     */
    @Column(name = "Password", nullable = false, length = 64)
    public String getPassword()
    {
        return mPassword;
    }

    /**
     * @setter
     * @param password
     *            the password to set
     */
    public void setPassword( String password )
    {
        mPassword = password;
    }

    /**
     * @getter
     * @return the username
     */
    @Column(name = "Username", nullable = false, unique = true)
    public String getUsername()
    {
        return mUsername;
    }

    /**
     * @setter
     * @param username
     *            the username to set
     */
    public void setUsername( String username )
    {
        mUsername = username;
    }

    /**
     * @getter
     * @return the versionInfo
     */
    @Embedded
    public VersionInfo getVersionInfo()
    {
        return mVersionInfo;
    }

    /**
     * @setter
     * @param versionInfo
     *            the versionInfo to set
     */
    public void setVersionInfo( VersionInfo versionInfo )
    {
        mVersionInfo = versionInfo;
    }
    
}

Hibernate version: 3.2.1GA

Full stack trace of any exception that occurs:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDao' defined in class path resource [dao.xml]: Cannot resolve reference to bean 'hibernateSessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateSessionFactory' defined in class path resource [dao.xml]: Invocation of init method failed; nested exception is java.lang.ArrayIndexOutOfBoundsException: -66
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateSessionFactory' defined in class path resource [dao.xml]: Invocation of init method failed; nested exception is java.lang.ArrayIndexOutOfBoundsException: -66
Caused by: java.lang.ArrayIndexOutOfBoundsException: -66
at org.hibernate.persister.entity.AbstractEntityPersister.checkVersion(AbstractEntityPersister.java:1859)
at org.hibernate.persister.entity.AbstractEntityPersister.generateUpdateString(AbstractEntityPersister.java:1815)
at org.hibernate.persister.entity.AbstractEntityPersister.generateUpdateString(AbstractEntityPersister.java:1781)
at org.hibernate.persister.entity.AbstractEntityPersister.postConstruct(AbstractEntityPersister.java:2934)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:409)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:226)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1294)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:805)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:745)
at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:134)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1202)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1172)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:428)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:261)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:109)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1100)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:862)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:424)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:287)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352)
at org.springframework.test.AbstractSingleSpringContextTests.createApplicationContext(AbstractSingleSpringContextTests.java:199)
at org.springframework.test.AbstractSingleSpringContextTests.loadContextLocations(AbstractSingleSpringContextTests.java:179)
at org.springframework.test.AbstractSingleSpringContextTests.loadContext(AbstractSingleSpringContextTests.java:158)
at org.springframework.test.AbstractSpringContextTests.getContext(AbstractSpringContextTests.java:105)
at org.springframework.test.AbstractSingleSpringContextTests.setUp(AbstractSingleSpringContextTests.java:87)
at junit.framework.TestCase.runBare(TestCase.java:128)
at org.springframework.test.ConditionalTestCase.runBare(ConditionalTestCase.java:69)
at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:120)
at junit.framework.TestSuite.runTest(TestSuite.java:228)
at junit.framework.TestSuite.run(TestSuite.java:223)
at org.junit.internal.runners.OldTestClassRunner.run(OldTestClassRunner.java:35)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

Name and version of the database you are using: MySQL 5.0.27

Debug level Hibernate log excerpt:
2007-05-28 13:30:51,265 DEBUG - Processing annotations of com.cluehunters.common.domain.User.versionInfo
2007-05-28 13:30:51,265 DEBUG - Binding column versionInfo unique false
2007-05-28 13:30:51,265 DEBUG - Binding component with path: com.cluehunters.common.domain.User.versionInfo
2007-05-28 13:30:51,265 DEBUG - Processing com.cluehunters.common.domain.VersionInfo property annotation
2007-05-28 13:30:51,265 DEBUG - Processing annotations of com.cluehunters.common.domain.VersionInfo.version
2007-05-28 13:30:51,265 DEBUG - Binding column Version unique false
2007-05-28 13:30:51,265 DEBUG - version is a version property
2007-05-28 13:30:51,265 DEBUG - binding property version with lazy=false
2007-05-28 13:30:51,265 DEBUG - building SimpleValue for version
2007-05-28 13:30:51,265 DEBUG - Building property version
2007-05-28 13:30:51,265 DEBUG - Version name: version, unsavedValue: undefined
2007-05-28 13:30:51,265 DEBUG - Processing annotations of com.cluehunters.common.domain.VersionInfo.whenCreated
2007-05-28 13:30:51,265 DEBUG - Binding column WhenCreated unique false
2007-05-28 13:30:51,265 DEBUG - binding property whenCreated with lazy=false
2007-05-28 13:30:51,265 DEBUG - building SimpleValue for whenCreated
2007-05-28 13:30:51,265 DEBUG - Building property whenCreated
2007-05-28 13:30:51,265 DEBUG - Processing annotations of com.cluehunters.common.domain.VersionInfo.whenLastModified
2007-05-28 13:30:51,265 DEBUG - Binding column WhenLastModified unique false
2007-05-28 13:30:51,265 DEBUG - binding property whenLastModified with lazy=false
2007-05-28 13:30:51,265 DEBUG - building SimpleValue for whenLastModified
2007-05-28 13:30:51,265 DEBUG - Building property whenLastModified
2007-05-28 13:30:51,265 DEBUG - Building property versionInfo

Code:

[b][/b]

emmanuel · **Posted:** Tue May 29, 2007 3:08 pm

version only works for entities, not components (a component being entirely bould to a given entity)

dantelope · **Joined:** Sun Dec 17, 2006 3:14 pm **Posts:** 3

I suppose that makes some sense, but...
I would like to have a component, VersionInfo, which is common to all versioned resources.

How do I map that in the Hibernate world using annotations?

Thanks,
Dan

emmanuel · **Posted:** Wed May 30, 2007 12:29 pm

You cannot