PrePersist, PostLoad, etc not being honoured?

cscashby · **Posted:** Tue Jun 20, 2006 12:57 pm

Problem outline

The code below is an attempt to implement Created By/Date and Updated By/Date functionality in our Entity Beans.

The @PrePersist, etc annotations are copied almost exactly from the example from JSR-220 sec 3.5.3.

The issue is that the log statements at the beginning of the Pre/Post methods are never being displayed. I would expect PostLoad and PreUpdate both to be called.

Grepping the debug log output shows no reference to any of these EntityListeners at all.

Thanks in advance!

Christian Ashby
Spiralinks, Inc.

Hibernate version:
3.2 cr2
w/ Annotations 3.2.0.CR1

Mapping documents:

Code:

<hibernate-configuration>
    <session-factory>
        <property name="dialect">@HIBERNATE_DIALECT@</property>
        <property name="show_sql">true</property>
        <property name="use_outer_join">true</property>
        <property name="connection.username">@HIBERNATE_USERNAME@</property>
        <property name="connection.password">@HIBERNATE_PASSWORD@</property>
        <property name="connection.driver_class">@HIBERNATE_DRIVER@</property>
        <property name="connection.url">@HIBERNATE_JDBC_URL@</property>
        <property name="hibernate.c3p0.max_size">200</property>
        <property name="hibernate.c3p0.min_size">5</property>
        <property name="hibernate.c3p0.timeout">0</property>
        <property name="hibernate.c3p0.max_statements">0</property>
        <property name="hibernate.c3p0.idle_test_period">300</property>
        <property name="hibernate.c3p0.acquire_increment">1</property>
        
        <mapping package="com.spl.focal.beans"/>
        <mapping class="com.spl.focal.beans.FocalEmployee"/>
    </session-factory>
</hibernate-configuration>

Code between sessionFactory.openSession() and session.close():

Code:

Session t = BeanFactory.getSession();
FocalEmployee ee = (FocalEmployee) t.load(FocalEmployee.class, "123");
Transaction tx = t.beginTransaction();
ee.setCorporateTitle("Blah123");
t.save(ee);
tx.commit();
try {
    t.connection().commit();
} catch (HibernateException e) {
    log.error(e);
} catch (SQLException e) {
    log.error(e);
}

Entity bean code

Code:

@Entity
@Table(name="FR_EMPLOYEES")
public class FocalEmployee extends SPLEntityBean {
   private Long personId;
<snip/>
       @Id @Column(name="PERSON_ID")
   @GeneratedValue(generator="PERSON_ID_SEQ")
   public Long getPersonId() {
      return personId;
   }
   public void setPersonId(Long personId) {
      this.personId = personId;
      setIdentifier(personId);
   }
<snip/>
}

Superclass code

Code:

@MappedSuperclass
@EntityListeners(EntityBeanMonitor.class)
public abstract class SPLEntityBean implements IEntityBean {
   private Serializable id = null;

   private Long createdBy;
   private Date createdDate;
   private Long updatedBy;
   private Date updatedDate;
   
   @Transient
   public Serializable getIdentifier() {
      return id;
   }
   public void setIdentifier(Serializable id) {
      this.id = id; 
   }
   
   @Column(name="CREATED_BY")
   public Long getCreatedBy() {
      return createdBy;
   }
   public void setCreatedBy(Long createdBy) {
      this.createdBy = createdBy;
   }

   @Temporal(TemporalType.DATE) @Column(name="CREATED_DT")
   public Date getCreatedDate() {
      return createdDate;
   }
   public void setCreatedDate(Date createdDate) {
      this.createdDate = createdDate;
   }
   
   @Column(name="UPDATED_BY")
   public Long getUpdatedBy() {
      return updatedBy;
   }
   public void setUpdatedBy(Long updatedBy) {
      this.updatedBy = updatedBy;
   }
   
   @Temporal(TemporalType.DATE) @Column(name="UPDATED_DT")
   public Date getUpdatedDate() {
      return updatedDate;
   }
   public void setUpdatedDate(Date updatedDate) {
      this.updatedDate = updatedDate;
   }

Monitor class

Code:

public class EntityBeanMonitor {
   // This fairly obscure means of getting the class name
   // will ensure that objects will declare themselves properly
   protected transient static Log log = LogFactory.getLog(new Throwable().getStackTrace()[0].getClassName());
   
   /**
    * This method insures that the CreatedBy / CreatedDate
    * properties are set correctly.
    */
   @PrePersist
   public void onPrePersist(SPLEntityBean bean) {
      log.debug("In onPrePersist()");
      bean.setCreatedBy(new Long(1234));
      bean.setCreatedDate(Calendar.getInstance().getTime());
      bean.setUpdatedBy(new Long(1234));
      bean.setUpdatedDate(Calendar.getInstance().getTime());
   }
   
   /**
    * This method insures that the UpdatedBy / UpdatedDate
    * properties are set correctly.
    */
   @PreUpdate
   public void onPreUpdate(SPLEntityBean bean) {
      log.debug("In onPreUpdate()");
      bean.setUpdatedBy(new Long(12345));
      bean.setUpdatedDate(Calendar.getInstance().getTime());
   }
   
   @PostLoad
   public void onPostLoad(SPLEntityBean bean) {
      log.debug("In onPostLoad() for " + bean.getIdentifier());
   }
}

Full stack trace of any exception that occurs:
none

Name and version of the database you are using:
Oracle 9i

cscashby · **Posted:** Tue Jun 20, 2006 1:14 pm

I'm replying to this post as I've correctly posted it in the EJB3-persistance forum now.

Apologies all!