Are Transient Fields empty in @PreUpdate functions?
My class 'EEntity' has a transient field 'entityType' which
is required by function 'EEntity.updatePropertiesAndFields()'.
This function is called before persisting or updating an EEntity object.
This works fine for a 'PrePersist' operation. However when changing
the object in the GUI and performing a 'merge' the transient field
'entityType' has lost its value.
(see source code)
I check in the session-bean before calling 'em.merge', the type is 'Purchase Order':
2006-01-30 00:53:16,000 INFO [STDOUT] 30-Jan-2006 00:53:16 common.util.ELogger debug
SEVERE: mergeEntity: entityType is :Purchase Order
I check in the @PreUpdate function and the type is empty:
2006-01-30 00:53:16,031 INFO [STDOUT] 30-Jan-2006 00:53:16 common.util.ELogger severe
SEVERE: updateProperties: entityType is empty: 17401-110
Am I missing something or are all transient fields empty in @PreUpdate functions ???
Any help would be well appreciated,
Marc
@Stateless
@TransactionAttribute(TransactionAttributeType.REQUIRED)
public class EInstanceManagerBean implements EInstanceManager, EInstanceManagerRemote, Serializable {
@PersistenceContext(unitName = "ngerp")
protected EntityManager em;
...
public void mergeEntity(EEntity entity) {
if(entity.getEntityType()==null){
ELogger.severe("mergeEntity: entityType is empty"+entity.getDescription());
} else {
ELogger.debug("mergeEntity: entityType is :" +entity.getEntityType().getDescription());
}
em.merge(entity);
}
...
}
@Entity(access = AccessType.FIELD)
@Inheritance(strategy = InheritanceType.SINGLE_TABLE, discriminatorType = DiscriminatorType.STRING, discriminatorValue = "E")
public class EEntity implements Serializable
...
@Transient
private EEntityType entityType;
...
@PrePersist
@PreUpdate
private void updatePropertiesAndFields()
{
if(this.getEntityType()==null){
ELogger.severe("updateProperties: entityType is empty: "+this.getDescription());
} else {
ELogger.debug("updateProperties: entityType is: " +this.getEntityType().getDescription());
}
EInstanceHelper.updateEntityFields(this);
this.setPropertiesXml(PropertiesXml.convertPropertiesToXml(this.properties));
}
