[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3917) @NotFound(action=NotFoundAction.IGNORE) results in EAGER loading for @ManyToOne(fetch = FetchType.LAZY) field

[Vlasov Igor (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=33200#action_33200 ] 

Vlasov Igor commented on HHH-3917:
----------------------------------

The method org.hibernate.event.def.DefaultLoadEventListener.load(...) 
internaly call method of same class

protected Object loadFromDatasource(
final LoadEvent event,
final EntityPersister persister,
final EntityKey keyToLoad,
final LoadEventListener.LoadType options) {
.....

}

In this method There is no any dependencies on  parameter "final LoadEventListener.LoadType options" 
(in my case INTERNAL_LOAD_NULLABLE) 

> @NotFound(action=NotFoundAction.IGNORE) results in EAGER loading for @ManyToOne(fetch = FetchType.LAZY) field
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HHH-3917
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3917
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.3.1
>            Reporter: Vlasov Igor
>
> Hello 
> I try to use @org.hibernate.annotations.NotFound(action=NotFoundAction.IGNORE) annotation to avoid of throwing an exception IN
> @JoinColumn(name = "UR_ID", referencedColumnName = "UR_ID")
> @ManyToOne(fetch = FetchType.LAZY)
> @org.hibernate.annotations.NotFound(action=NotFoundAction.IGNORE)
> @Basic(optional=true)
>  private UserRole role;
> Then it results me to  EAGER loading  of this field.
> Throw days of debuging  i have found that:
> 1. @org.hibernate.annotations.NotFound results in:
>      isNullable()=true 
> for org.hibernate.type.ManyToOneType
> 2. in org.hibernate.impl.SessionImpl and method internalLoad i can see:
> LoadEventListener.LoadType type = nullable ? 
> 				LoadEventListener.INTERNAL_LOAD_NULLABLE : 
> 				eager ? LoadEventListener.INTERNAL_LOAD_EAGER : LoadEventListener.INTERNAL_LOAD_LAZY;
> Threrefore we have LoadEventListener.INTERNAL_LOAD_NULLABLE  type of loading my relation. !!!
> and in class org.hibernate.event.LoadEventListener.INTERNAL_LOAD_NULLABLE I can see setAllowProxyCreation(false) !!!!
> 3. in org.hibernate.event.def.DefaultLoadEventListener in line 218 there is a condition:
> 	if ( options.isAllowProxyCreation() ) {
> 	return createProxyIfNecessary( event, persister, keyToLoad, options, persistenceContext );
>       }	else {
> 	return load(event, persister, keyToLoad, options);
>     }
> In my case LoadEventListener.INTERNAL_LOAD_NULLABLE.isAllowProxyCreation() ==false !! 
>  and it results in LOADING of Object !!!
> Can we set LoadEventListener.INTERNAL_LOAD_NULLABLE.isAllowProxyCreation() to true ?
> org.hibernate.event.LoadEventListener.INTERNAL_LOAD_NULLABLE = new LoadType("INTERNAL_LOAD_NULLABLE")
> 			.setAllowNulls(true)
> 			.setAllowProxyCreation(false)
> 			.setCheckDeleted(false)
> 			.setNakedEntityReturned(false);

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