3:35 p.m.
Intrumentated to one relations can not be join fetched
------------------------------------------------------
Key: HHH-3949
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3949
Project: Hibernate Core
Issue Type: Bug
Components: core, query-criteria, query-hql
Affects Versions: 3.3.1
Reporter: Gérald Quintana
1) Relation Person -> Vehicle is annotated
@OneToOne(optional=true, mappedBy="driver", fetch=FetchType.LAZY)
@LazyToOne(LazyToOneOption.NO_PROXY)
private Vehicle vehicle;
2) Both entities are instrumented with Javassist
3) Query (HQL or Criteria) Person and Vehicle: from Person p left join fetch p.vehicle
=> SQL query is correct but Vehicles are not loaded
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3:43 p.m.
New subject: [Hibernate-JIRA] Updated: (HHH-3949) Intrumentated to one relations can not be join fetched
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-3949?page=c...
]
Gérald Quintana updated HHH-3949:
---------------------------------
Attachment: hhh-3949.tar.bz2
Attached test case.
How to run it:
1) Unzip
2) Run "mvn clean install"
==> 4 test cases fail showing the problem
3) Disable instrumentation by commenting the antrun plugin section in the POM
4) Re-run "mvn clean install"
==> 4 test cases succeed showing the problem doesn't occur when there is no
instrumentation
Intrumentated to one relations can not be join fetched
------------------------------------------------------
Key: HHH-3949
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3949
Project: Hibernate Core
Issue Type: Bug
Components: core, query-criteria, query-hql
Affects Versions: 3.3.1
Reporter: Gérald Quintana
Attachments: hhh-3949.tar.bz2
1) Relation Person -> Vehicle is annotated
@OneToOne(optional=true, mappedBy="driver", fetch=FetchType.LAZY)
@LazyToOne(LazyToOneOption.NO_PROXY)
private Vehicle vehicle;
2) Both entities are instrumented with Javassist
3) Query (HQL or Criteria) Person and Vehicle: from Person p left join fetch p.vehicle
=> SQL query is correct but Vehicles are not loaded
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2:08 p.m.
New subject: [Hibernate-JIRA] Commented: (HHH-3949) Intrumentated to one relations can not be join fetched
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-3949?page=c...
]
Don Goertzen commented on HHH-3949:
-----------------------------------
We're experiencing the same issue (ours is a ManyToOne/LazyToOne). It seems the
join-fetched entity does get loaded on the session, but the association does not
initialize (remains null) until that associated entity is accessed. When the associated
entity is accessed, an additional select is issued to retrieve the foreign id and the
association is then initialized to the loaded entity without re-selecting it.
Impact: when the owner entity is passed out of the session, LazyInitializationExceptions
occur when trying to access the associated entity, even though we had join-fetched it.
A workaround is to force initialization of the associations programmatically by accessing
the associated entity in each relation before returning the owner entity. This results in
(n) additional, unnecessary selects and makes for some ugly data access manager code.
Intrumentated to one relations can not be join fetched
------------------------------------------------------
Key: HHH-3949
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3949
Project: Hibernate Core
Issue Type: Bug
Components: core, query-criteria, query-hql
Affects Versions: 3.3.1
Reporter: Gérald Quintana
Attachments: hhh-3949.tar.bz2
1) Relation Person -> Vehicle is annotated
@OneToOne(optional=true, mappedBy="driver", fetch=FetchType.LAZY)
@LazyToOne(LazyToOneOption.NO_PROXY)
private Vehicle vehicle;
2) Both entities are instrumented with Javassist
3) Query (HQL or Criteria) Person and Vehicle: from Person p left join fetch p.vehicle
=> SQL query is correct but Vehicles are not loaded
--
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3:40 p.m.
New subject: [Hibernate-JIRA] (HHH-3949) Intrumentated to one relations can not be join fetched
7:01 a.m.
New subject: [Hibernate-JIRA] (HHH-3949) Intrumentated to one relations can not be join fetched
4430
days inactive
5684
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hibernate-issues@lists.jboss.org
4 comments
4 participants
participants (4)
-
André Merlo (JIRA) -
Antonio Ortiz (JIRA)
-
Don Goertzen (JIRA)
-
Gérald Quintana (JIRA)