[Hibernate-JIRA] Created: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
8:26 a.m.
serializing an EntityManager should include enough information to later be unserialized
with re-association to existing EntityManagerFactory (even on a different machine/jvm
process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: New Feature
Components: entity-manager
Reporter: Scott Marlow
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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8:35 a.m.
New subject: [Hibernate-JIRA] Commented: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow commented on HHH-6727:
-----------------------------------
One requirement for implementation, could be that a (globally) unique property is passed
into the EMF when its created. If the application is deployed in multiple JVM processes,
the same property will still be passed in. The same property can be referenced by each
EntityManager to allow easy re-association with the EMF.
Another suggestion would be that if the property isn't passed in, that a UUID by used.
SessionFactory & SessionFactoryObjectFactory classes already handle this (via JNDI
name that SF should be bound to or UUID)
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: New Feature
Components: entity-manager
Reporter: Scott Marlow
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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4:02 p.m.
New subject: [Hibernate-JIRA] Updated: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow updated HHH-6727:
------------------------------
Issue Type: Bug (was: New Feature)
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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10:21 a.m.
New subject: [Hibernate-JIRA] Commented: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow commented on HHH-6727:
-----------------------------------
From my quick visual inspection, EntityManagerFactoryImpl appears to
have its own instance of SessionFactoryImpl. SessionFactoryImpl appears to have its own
second level caches (query, entity). Whether the second level caches would be shared with
other instances of the same EMF, I'm not sure. Just wanted to point out that if the
cache isn't shared, we could end up double buffering entities/queries...
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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1:13 p.m.
New subject: [Hibernate-JIRA] Updated: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Gail Badner updated HHH-6727:
-----------------------------
Fix Version/s: 4.0.0.next
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Fix For: 4.0.0.next
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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8:50 a.m.
New subject: [Hibernate-JIRA] Commented: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow commented on HHH-6727:
-----------------------------------
From looking at the "EntityManagerFactoryImpl
entityManagerFactory" instance variable in class EntityManagerFactoryImpl, it would
appear that the serializing the EntityManager, would include the EntityManagerFactory.
Looking at in class EntityManagerFactoryImpl, a SessionFactory (SessionFactoryImpl)
instance is referenced. When the SessionFactoryImpl is serialized, only the UUID + JNDI
name of SF (if configured) is serialized. The cache and other heavy instance variables
are not serialized. :)
The puzzling part of this for me is what happens currently in a clustered environment,
where the same application SF on different machines, would have different UUIDs (and
possibly no JNDI name for the SF). We must be requiring the SF JNDI name to be set, to
cover that case. That would seem to be a good workaround.
I look forward to seeing the clustering of the extended persistence context
(EntityManager) in action, so we can go by facts, not just Scott's review of current
code. ;)
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Fix For: 4.0.0.next
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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9:05 a.m.
New subject: [Hibernate-JIRA] Commented: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow commented on HHH-6727:
-----------------------------------
From a sizing point of view, it appears that the following EMF data is
duplicated in a clustered environment (I think). The savings will be based from not
serializing the following EMF instance variables:
private final SessionFactory sessionFactory; // only UUID + name is serialized
private final PersistenceUnitTransactionType transactionType;
private final boolean discardOnClose;
private final Class sessionInterceptorClass;
private final CriteriaBuilderImpl criteriaBuilder;
private final Metamodel metamodel;
private final HibernatePersistenceUnitUtil util;
private final Map<String,Object> properties;
private final PersistenceUtilHelper.MetadataCache cache = new
PersistenceUtilHelper.MetadataCache();
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Fix For: 4.0.0.next
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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4:57 a.m.
New subject: [Hibernate-JIRA] Updated: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Gail Badner updated HHH-6727:
-----------------------------
Fix Version/s: (was: 4.0.0.CR5)
4.0.0.next
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Fix For: 4.0.0.next
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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12:47 p.m.
New subject: [Hibernate-JIRA] Updated: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Steve Ebersole updated HHH-6727:
--------------------------------
Fix Version/s: (was: 4.0.0.CR6)
4.0.0.next
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Fix For: 4.0.0.next
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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11:23 p.m.
New subject: [Hibernate-JIRA] Updated: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Strong Liu updated HHH-6727:
----------------------------
Fix Version/s: (was: 4.0.0.CR7)
4.0.0.next
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Fix For: 4.0.0.next
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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10:24 p.m.
New subject: [Hibernate-JIRA] Updated: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Steve Ebersole updated HHH-6727:
--------------------------------
Fix Version/s: (was: 4.0.0.Final)
4.0.1
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Fix For: 4.0.1
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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10:30 p.m.
New subject: [Hibernate-JIRA] Commented: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow commented on HHH-6727:
-----------------------------------
Look at how we do this for session/sessionfactory
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Assignee: Scott Marlow
Fix For: 4.0.1
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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10:30 p.m.
New subject: [Hibernate-JIRA] Assigned: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow reassigned HHH-6727:
---------------------------------
Assignee: Scott Marlow
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Assignee: Scott Marlow
Fix For: 4.0.1
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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10:40 p.m.
New subject: [Hibernate-JIRA] Commented: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow commented on HHH-6727:
-----------------------------------
AbstractEntityManagerImpl can probably change EntityManagerFactoryImpl to be transient and
do a similar dance that Steve suggested as session/sessionFactory does:
<sebersole> what session does is to serialize the name/uuid combo of the SF it
belongs to
<sebersole> and look that up on deser
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
Assignee: Scott Marlow
Fix For: 4.0.1
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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8:07 p.m.
New subject: [Hibernate-JIRA] Closed: (HHH-6727) serializing an EntityManager should include enough information to later be unserialized with re-association to existing EntityManagerFactory (even on a different machine/jvm process)
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727?page=c...
]
Scott Marlow closed HHH-6727.
-----------------------------
Resolution: Duplicate
Fix Version/s: (was: 4.0.1)
Assignee: (was: Scott Marlow)
duplicate of HHH-6897
serializing an EntityManager should include enough information to
later be unserialized with re-association to existing EntityManagerFactory (even on a
different machine/jvm process)
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-6727
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6727
Project: Hibernate Core
Issue Type: Bug
Components: entity-manager
Reporter: Scott Marlow
The re-association (of EM to EMF) is important, as applications expect that closing the
EntityManagerFactory, will close the EntityManager's that have been opened from the
EMF.
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4744
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4822
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hibernate-issues@lists.jboss.org
14 comments
4 participants
participants (4)
-
Gail Badner (JIRA) -
Scott Marlow (JIRA)
-
Steve Ebersole (JIRA)
-
Strong Liu (JIRA)