Here's my take :
In OpenJPA 1.x if you did something like this :
Person p;
tran.begin();
em.persist(p);
p.setName("Mike");
tran.commit();
You would get a PrePersist, and a PreUpdate and PostUpdate callback. In
OpenJPA 1.3, and version 2.x you'll only get the PrePersist one.
-mike
On Wed, Feb 9, 2011 at 9:23 AM, Joel Halbert <[email protected]> wrote:
> What's the significance of this, from the docs?
>
> "If an entity was updated between the persist() and commit() operations
> in OpenJPA 1.x, then any PreUpdate and PostUpdate life cycle callback
> methods would be executed. Starting in OpenJPA 1.3 and 2.0, these
> callbacks will not get executed."
>
> http://openjpa.apache.org/builds/2.0.1/apache-openjpa-2.0.1/docs/manual/main.html
>
> Does it mean we should not rely on PreUpdate?
>
>
>
> On Wed, 2011-02-09 at 15:16 +0000, Joel Halbert wrote:
> > Doh!!! Thanks for clarifying.
> >
> > On Wed, 2011-02-09 at 15:13 +0000, Mark Struberg wrote:
> > > Hi Joel!
> > >
> > > You might look at @PreUpdate.
> > >
> > > @PrePersist only gets called before a em.persist() performs the sql
> INSERT statement. @PreUpdate will get called before any sql UPDATE to the
> entity.
> > >
> > > LieGrue,
> > > strub
> > >
> > > --- On Wed, 2/9/11, Joel Halbert <[email protected]> wrote:
> > >
> > > > From: Joel Halbert <[email protected]>
> > > > Subject: Does PrePersist work when merging entities? (2.0.1)
> > > > To: "[email protected]" <[email protected]>
> > > > Date: Wednesday, February 9, 2011, 3:06 PM
> > > > Hi Folks,
> > > >
> > > > Are there any known issues around using @PrePersist
> > > > on merge with
> > > > 2.0,.1?
> > > > My Entities use Property access.
> > > >
> > > > @PostLoad method is always called when loading entities.
> > > > @PrePersist is called on persist, but never on merge.
> > > >
> > > > I'm tried using both runtime (agent) and compile time
> > > > enhancement.
> > > >
> > > > Here's a sample Entity that I used for testing this.
> > > >
> > > >
> > > >
> > > > import javax.persistence.*;
> > > >
> > > > @Entity
> > > > @Access(AccessType.PROPERTY)
> > > > @Table(name="TEST")
> > > > public class Test {
> > > >
> > > > private int id;
> > > > private String name;
> > > >
> > > > @Id
> > > > @GeneratedValue(strategy =
> > > > GenerationType.IDENTITY)
> > > > @Column(name="ID")
> > > > public int getId() {
> > > > return id;
> > > > }
> > > > public void setId(int id) {
> > > > this.id = id;
> > > > }
> > > >
> > > > @Column(name="NAME")
> > > > public String getName() {
> > > > return name;
> > > > }
> > > > public void setName(String name) {
> > > > this.name = name;
> > > > }
> > > >
> > > > @PrePersist
> > > > void populateDBFields(){
> > > >
> > > > System.out.println("Hello, I happen prePersist!");
> > > > }
> > > >
> > > > @PostLoad
> > > > void populateTransientFields(){
> > > >
> > > > System.out.println("Hello, I happen postLoad!");
> > > > }
> > > >
> > > > public static void main(String[] args)
> > > > throws Exception {
> > > > EntityManagerFactory
> > > > factory = Persistence.createEntityManagerFactory(
> > > >
> > > > "su3", null);
> > > > EntityManager em =
> > > > factory.createEntityManager();
> > > >
> > > > // Test t = new
> > > > Test();
> > > > //
> > > > t.setName("name");
> > > > // em.persist(t);
> > > >
> > > > Test t =
> > > > em.find(Test.class, 1);
> > > > t.setName("new
> > > > name");
> > > > em.merge(t);
> > > >
> > > >
> > > > em.getTransaction().commit();
> > > > em.close();
> > > >
> > > > }
> > > > }
> > > >
> > > >
> > > >
> > > >
> > > > Any clues?
> > > >
> > > > Joel
> > > >
> > >
> > >
> > >
> > >
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>
>
>
