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