[jboss-jira] [JBoss JIRA] Commented: (JBAS-5474) @PostLoad -> LazyInitializationException: illegal access to loading collection ond a @OneToMany with FetchType.EAGER

[henk de boer (JIRA)]

    [ https://jira.jboss.org/browse/JBAS-5474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12547535#action_12547535 ] 

henk de boer commented on JBAS-5474:
------------------------------------

Why is an issue such as this still open after more than 2 years?

I have the exact same problem. I have an eagerly loaded association for a collection of entities. For performance reasons I would like to create an internal Set for some property of these entities. Either the setter or the @PostLoad would be a clean and simple place to create this, yet Hibernate won't let me because of this silly exception.

I now have to code a very ugly workaround, where I manually track stuff and build this Set after the first to its setter. This works, but it's verbose, ugly and brittle.

> @PostLoad -> LazyInitializationException: illegal access to loading collection ond a @OneToMany with FetchType.EAGER
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: JBAS-5474
>                 URL: https://jira.jboss.org/browse/JBAS-5474
>             Project: JBoss Application Server
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: EJB3
>    Affects Versions: JBossAS-4.2.2.GA
>         Environment: Win XP SP2, Java 1.5.0_15-b04
>            Reporter: Stefan Lindner
>            Assignee: Emmanuel Bernard
>         Attachments: Child.java, Parent.java, PostLoadTest.java
>
>
> I have a bean with a @OneToMany relation mapping like
> 	private List<TherapieeinheitBean> therapieeinheiten;
>      	@OneToMany(
> 			cascade = {CascadeType.REFRESH},
> 			fetch = FetchType.EAGER,
> 			mappedBy="therapiekatalog"
> 	)
> with FetchType.EAGER and a simnple @PostLoad like
>      	@PostLoad
> 	public void postLoad() {
> 		System.out.println("!!!!!!!!!! postLoad !!!!!!!!!!");
> 		System.out.print("size: " + therapieeinheiten.size());
> 	}
> When an entity of this bean is loaded JBoss trows 
>      org.hibernate.LazyInitializationException: illegal access to loading collection
>         at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:341)
>         at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
>         at org.hibernate.collection.PersistentBag.iterator(PersistentBag.java:249)
>         at de.visiodesk.therapiekatalog.TherapiekatalogBean.postLoad(TherapiekatalogBean.java:170)
>         .
>         .
>         .
> and prints the messages
>      WARN  [LoadContexts] fail-safe cleanup (collections) : org.hibernate.engine.loading.CollectionLoadContext at 2c8ce9<rs=Ingres-ResultSet[18523]>
>      WARN  [CollectionLoadContext] On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [206] entries
> afterwards. The PostLoad method should be called after the data was completely loaded. Is there a workaround for this Problem? I found some other ressources on the net where peole had the same problem, but I saw no resolution, no hint, no workaround.
>      

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