[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5119) LazyInitializationException on OneToMany relationship if relation is not on Primary Key
LazyInitializationException on OneToMany relationship if relation is not on Primary Key
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Key: HHH-5119
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5119
Project: Hibernate Core
Issue Type: Bug
Affects Versions: 3.5.0-Final
Environment: Hibernate 3.5.0-Final with Derby DB and Oracle 10g
Reporter: Simon Martinelli
Attachments: JPA2_M2M.tar.gz
I created two entities One and Two.
One has a OneToMany relationship to Two.
@OneToMany
@JoinColumn(insertable = false, updatable = false, name = "SCHLUESSEL",
referencedColumnName = "SCHLUESSEL")
private List<Two> twos = new ArrayList<Two>();
Important notice: SCHLUESSEL is not the primary key of Two!
I have the following test code:
List<One> ones = em.createQuery("select o from One o").getResultList();
for (One one : ones) {
logger.info(one.getName());
//em.refresh(one);
for (Two two : one.getTwos()) {
logger.info(two.getText());
}
}
When I run a test and try to access "twos" I get an excpetion:
2002 [main] ERROR org.hibernate.LazyInitializationException - failed to lazily initialize
a collection of role: ch.test.One.twos, no session or session was closed
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of
role: ch.test.One.twos, no session or session was closed
at
org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:380)
at
org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:372)
After uncommenting em.refresh it works.
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