newbie q: problem deleting record with hibernate/seam
Hi folks,
I have a little application that goes like this: a property has a number of offers on it. an offer has a person who placed the offer and the person has an address.
so:
@Entity
@Name("property")
public class Property implements Serializable
{
/**
* Default Constructor.
*/
public Property()
{
}
/**
* Get the property identifier.
*/
@Id(generate=GeneratorType.AUTO)
public Integer getId()
{
return id;
}
/**
* Set the property identifier.
*/
public void setId(Integer id)
{
this.id = id;
}
/**
* Get the list of offers on <code>this</code> property.
*/
@OneToMany(cascade = CascadeType.ALL)
public List<Offer> getOffers()
{
return offers;
}
/**
* Set an offer on this property.
*
* @pre offer != null
* @post An offer has been placed on this property.
*/
public void setOffers(List<Offer> offers)
{
this.offers = offers;
}
/**
* Add an offer on this property.
*
* @pre offer != null
* @post An offer has been placed on this property.
*/
public void addOffer(Offer offer)
{
this.offers.add(offer);
}
/**
* The property attributes
*/
private int id;
private List<Offer> offers = new ArrayList<Offer>();
}
the offer.
@Entity
@Name("offer")
public class Offer implements Serializable
{
/**
* Default Constructor.
*/
public Offer()
{
person = new Person();
}
/**
* Get the offer identifier.
*/
@Id(generate=GeneratorType.AUTO)
public Integer getId()
{
return id;
}
/**
* Set the offer identifier.
*/
public void setId(Integer id)
{
this.id = id;
}
/**
* Get the offer amount.
*/
public double getAmount()
{
return amount;
}
/**
* Set the offer amount.
*
* @pre amount != null
* @post The offer amount for <code>this</code> has been set.
*/
public void setAmount(double amount)
{
this.amount = amount;
}
/**
* Get the date the offer was placed on.
*/
@Basic(temporalType=TemporalType.DATE)
@NotNull
public Date getDate()
{
return date;
}
/**
* Set the date the offer was placed on.
*/
public void setDate(Date date)
{
this.date = date;
}
/**
* Get the person who placed the offer on the house.
*/
@OneToOne(cascade = CascadeType.ALL)
@NotNull(message="Please supply the person who placed this offer.")
public Person getPerson()
{
return person;
}
/**
* Set the person who made the offer.
*
* @pre person != null
* @post The person for <code>this</code> has been set.
*/
public void setPerson(Person person)
{
this.person = person;
}
/**
* The offer attributes
*/
private int id;
private double amount;
private Date date;
private Person person;
}
the code to delete an offer:
@Scope(EVENT)
@Name("editOffer")
@LoggedIn
public class EditOfferAction
{
/**
* Update an offer on a property.
*/
@IfInvalid(outcome=REDISPLAY)
public String update()
{
log.info(">>> editing offer");
propertyDatabase.persist(offer);
propertyDatabase.flush();
log.info("<<< edited offer");
return "updateOfferSuccess";
}
/**
* Remove the specified offer from the database.
*/
@IfInvalid(outcome=REDISPLAY)
public String delete()
{
log.info(">>> deleting offer");
log.info("session isDirty=" + propertyDatabase.isDirty());
log.info("**** DELETING OFFER");
propertyDatabase.delete(offer);
log.info("**** FLUSHING SESSION");
propertyDatabase.flush();
log.info("session isDirty=" + propertyDatabase.isDirty());
log.info("<<< deleted offer");
return "deleteOfferSuccess";
}
/**
* Is the offer object to update.
*/
@In
private Offer offer;
/**
* Is the property database.
*/
@In(create=true)
private Session propertyDatabase;
/**
* Is the JSF Context.
*/
@In
private FacesContext facesContext;
/**
* Is logger for this class.
*/
private static final Logger log =
Logger.getLogger(EditOfferAction.class);
}
I can't seem to get the delete to work. I'm getting TransientObjectExceptions on the reference to the Person class. So I then tried to persist the person before that and then after the delete hibernate is inserting rows? I'm a bit confused to be honest. I thought the annotation for CascadeType.ALL would have managed this for me?
Hope someone can point me in the right direction.
Thanks,
Marty