[jboss-user] [JBoss Seam] - LazyInitialization and ScopeType.SESSION question
Let's say I have entity class that is also seam component named "account":
@Scope(ScopeType.SESSION)
| @Name("account")
| @Entity
| public class Account implements Serializable{
| private Long id;
| private Collection<Operation> operations;
| ...
| }
During log in operation I read user account object from db and outjected under name
"currentAccount":
@Name("authenticator")
| public class Authenticator {
|
| @Out(required=false, scope=ScopeType.SESSION, value="currentAccount")
| private Account account;
|
| public boolean authenticate() {
| account = getUserAccountFromDB();
| }
| ...
|
| }
Now I want to use currentAccount object in diffrent manager(plain pojo), for instance:
| @Name("someManager")
| public class SomeManager () {
| @In Account currentAccount;
|
| public void doSth() {
| for (Operation operation:currentAccount.getOperations()) {
| log.debug(operation);
| }
| }
| }
And now currentAccount.getOperations() will cause
org.hibernate.LazyInitializationException the same if I try use use sth like
#{currentAccount.operations} directly in view.
I came across :
http://www.jboss.com/index.html?module=bb&op=viewtopic&t=85964
where Gavin King posted that It's neccesary to reattach detached object (scoped
SESSION) using session.lock() to make it valid to conversation context.
And now my qustions:
1. Do I really have to do this "reattach" in every bean that uses SESSION scoped
seam components?
2. If I use many views that displays SESSION scoped objects (complex lazy initialization)
I have to make them EAGER ??? (imagine there is outjection at the begginig and then only
views that uses SESSION scoped components - no other beans)
3. Why @In does not make this "attach" automatically?
I'm just at the begging of seam developing process and maybe I miss some important
point? ;)
Many thanks in advance
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