Hi!

We works with Hibernate 3.3.2. We have an big entity tree. A big part of theese entitys are read only entitys, but thesee are fetched.
And if I call a merge it is very slow.

I suppose merge gets the root entity from cache or from db, and sets the detached object properties to the persistent entity tree.

If I set the bidirectional onetomany's other side the updatable=false and insertable=false. So I suppose merge calls merge to all fetched children of root entity.

Child entity
@ManyToOne(optional=false)
@JoinColumn(name="ID_APPLICATION", referencedColumnName="ID_APPLICATION", nullable=false, updatable=false, insertable=false)
public Application getApplication() {

Root entity (Application)

@OneToMany(mappedBy="application")
@OrderBy("maturityDate")
public java.util.List<RedemptionSchedule> getRedemptionList() {

If I remove the readonly children entitys from detached root entity, than it is more faster, but i'm affraid it's not a beautiful solution.

What is the better solution?

Thanks for all answer!

Hali

You need to provide more info: on what objects do you call merge?
Do you have cascading enabled?

Please post some example code.

I call merge only the root.

I didn't set any cascade on this read only properties.

But it's true. There is 3 properties on the root, what have CASCADE.ALL, but there aren't read only. And I haven't remove theese in my solution.

Thanks