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From Miłosz Tylenda <mtyle...@o2.pl>
Subject RE: JPA and streams
Date Tue, 02 Mar 2010 10:58:44 GMT
Hiran,

You are right. The LOB streaming is broken in 1.2. It works in 2.0 but there is still room
for improvement, mainly for databases other than Oracle [1]. The supported databases and restrictions
are briefly described in the 2.0 manual [2]. You might also try a 1.3.0 snapshot.

Mixing @LOB with @Persistent is not a good mariage.

Regards,
Milosz

[1] http://issues.apache.org/jira/browse/OPENJPA-1248
[2] http://openjpa.apache.org/builds/latest/docs/manual/manual.html#ref_guide_streamsupport


> 
> > 
> Meanwhile I tried OpenJPA 2.0.0 beta - and the very same code
> executes just fine.
> I cannot tell what made the difference, but then there are quite
> some modifications between the releases...
> 
> Hiran
> 
> PS: I have been told that @LOB should not be used in conjunction
> with @Persistent. However when I combined the two with OpenJPA
> 1.2.1 it did not work either.
> 
> 
> Hiran Chaudhuri
> System Support Programmer / Analyst
> IT Service Assurance
> E-Commerce Service Assurance
> Amadeus Data Processing GmbH
> Berghamer Strasse 6
> 85435 Erding
> T: +49-8122-43x3662
> hiran.chaudhuri@amadeus.com
> http://www.amadeus.com
> 
> 
> 
> "Andrew Thompson" <at2582@columbia.edu>To<users@openjpa.apache.org>
cc
bcc
SubjectRE: JPA and streams

> 

> "Andrew Thompson" <at2582@columbia.edu>Please respond to : users@openjpa.apache.org
> 01-03-10 15:58
> 

> 
> 
> Did you try @Lob?
> 
> http://openjpa.apache.org/builds/latest/docs/manual/ref_guide_mapping_jpa.html
> http://www.ibmpressbooks.com/articles/article.asp?p=1192350&seqNum=4
> 
> I struggled with this also about a year ago when I was trying to
> refactor some legacy code and eventually gave up due to an imminent
> deadline - so I'm curious to hear how you solve this also.
> 
> -Andy
> 
> 
> -----Original Message-----
> From: Hiran Chaudhuri [mailto:hiran.chaudhuri@amadeus.com]
> Sent: Mon 3/1/2010 9:46 AM
> To: users@openjpa.apache.org
> Subject: JPA and streams
> 
> 
> Hi there.
> 
> I'm trying to get OpenJPA running with Inputstreams. Somehow I
> always get Exceptions using OpenJPA 1.2.1, Oracle JDBC driver
> 10.2.0.4.0 and Oracle Database 10g Enterprise Edition Release
> 10.2.0.4.0 - 64bit Production.
> The entity in question contains one field maked as:
>    @Persistent
>    InputStream data;
> 
> This is the exception obtained:
> 
> Exception in thread "main"
> <openjpa-1.2.1-r752877:753278 fatal store error>
> org.apache.openjpa.persistence.RollbackException: null
>        at
> org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:523)
>        at ...
> Caused by: <openjpa-1.2.1-r752877:753278 nonfatal general
> error> org.apache.openjpa.persistence.PersistenceException: null
>        at
> org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:1834)
>        at
> org.apache.openjpa.kernel.LocalManagedRuntime.commit(LocalManagedRuntime.java:81)
>        at
> org.apache.openjpa.kernel.BrokerImpl.commit(BrokerImpl.java:1350)
>        at
> org.apache.openjpa.kernel.DelegatingBroker.commit(DelegatingBroker.java:877)
>        at
> org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:512)
>        ... 1 more
> Caused by: java.lang.NullPointerException
>        at
> org.apache.openjpa.jdbc.sql.DBDictionary.updateBlob(DBDictionary.java:4304)
>        at
> org.apache.openjpa.jdbc.meta.strats.LobFieldStrategy.customInsert(LobFieldStrategy.java:112)
>        at
> org.apache.openjpa.jdbc.meta.FieldMapping.customInsert(FieldMapping.java:701)
>        at
> org.apache.openjpa.jdbc.kernel.AbstractUpdateManager$CustomMapping.execute(AbstractUpdateManager.java:375)
>        at
> org.apache.openjpa.jdbc.kernel.AbstractUpdateManager.flush(AbstractUpdateManager.java:94)
>        at
> org.apache.openjpa.jdbc.kernel.AbstractUpdateManager.flush(AbstractUpdateManager.java:72)
>        at
> org.apache.openjpa.jdbc.kernel.JDBCStoreManager.flush(JDBCStoreManager.java:717)
>        at
> org.apache.openjpa.kernel.DelegatingStoreManager.flush(DelegatingStoreManager.java:130)
>        at
> org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:2010)
>        at
> org.apache.openjpa.kernel.BrokerImpl.flushSafe(BrokerImpl.java:1908)
>        at
> org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:1826)
>        ... 5 more
> 
> Any ideas or workarounds?
> 
> Hiran
> 
> 
> Hiran Chaudhuri
> System Support Programmer / Analyst
> IT Service Assurance
> E-Commerce Service Assurance
> Amadeus Data Processing GmbH
> Berghamer Strasse 6
> 85435 Erding
> T: +49-8122-43x3662
> hiran.chaudhuri@amadeus.com
> http://www.amadeus.com <http://www.amadeus.com/>  
> 
> Amadeus logo <http://www.amadeus.com/>
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 



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