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From John Leach <john.le...@syger.com>
Subject Re: InvalidStateException: Attempt to set column "client.version" to two different values
Date Sat, 10 May 2008 16:30:26 GMT

Hello Craig,
Oops, I compiled parancoe-yaml with Eclipse, and didn't check the version.
Should compile with Java 5 though. My mistake. Spike compiles with the ant
task set to 1.5 source and target. I'll recompile the jar file and update
the svn repository this weekend.

John


Craig L Russell wrote:
> 
> Hi John,
> 
> Does the project require Java 6? I checked out the sources and cd  
> trunk; ant. It appears that one of the dependencies is compiled with  
> Java 6.
> test-compile:
>      [javac] Compiling 29 source files to /Users/clr/spikes/trunk/bin
>      [javac] /Users/clr/spikes/trunk/java/src/org/syger/fixtures/ 
> YamlHelper.java:28: cannot access org.parancoe.yaml.Yaml
>      [javac] bad class file: /Users/clr/spikes/trunk/extlib/parancoe- 
> yaml.jar(org/parancoe/yaml/Yaml.class)
>      [javac] class file has wrong version 50.0, should be 49.0
>      [javac] Please remove or make sure it appears in the correct  
> subdirectory of the classpath.
>      [javac] import org.parancoe.yaml.Yaml;
>      [javac]                          ^
>      [javac] 1 error
> 
> more below...
> 
> On May 10, 2008, at 7:38 AM, John Leach wrote:
> 
>>
>> Dear list,
>> As part of a (very) small open source project to provide domain entity
>> mapping and association examples, together with a programmatic  
>> interface to
>> reach outside the JPA 1.0 specifications, I am struggling with two  
>> problems
>> using OpenJPA.
>>
>> I had better warn you all that I am a freelance consultant working  
>> in Italy
>> and I use and will be using this work to sell both the advantages and
>> disadvantages (but with solutions) of using JPA 1.0. to my clients.
>>
>> The first showstopper is an InvalidStateException: Attempt to set  
>> column
>> "client.version" to two different values... where the version field  
>> is being
>> updated (this is an optimistic locking field, and has a @Version
>> annotation), the SQL query being performed seems to be:
>> UPDATE client SET lastUpdated = ?, version = ? WHERE id = ? AND  
>> version = ?
>> [params=(Timestamp) 2008-05-10 15:58:16.593, (int) 3, (long) 3,  
>> (int) 2]
> 
> This SQL seems correct. It's updating the lastUpdated and version  
> columns and verifying that the version is correct. Where does this  
> error occur?
> 
> Craig
>>
>> The same annotated entities work just fine with Hibernate and  
>> EclipseLink -
>> for what that's worth.
>> I have even tried adding openjpac in the ant task, but the results  
>> remain
>> the same.
>> I am convinced that this is a Spring/OpenJPA configuration problem,  
>> but
>> being a relative novice with Spring (and OpenJPA) I have been  
>> beating my
>> head against the proverbial brick wall for two days, and not even a  
>> dent in
>> the wall to show for my efforts.
>>
>> The second showstopper is finding a way to change the metadata  
>> before an
>> EntityManager is created. The intention is to provide a 'third'  
>> alternative
>> to annotations and/or persistence.xml, where the entity classes  
>> contain only
>> JPA annotations, with any remaining changes being made  
>> programmatically. The
>> one-to-many example defines CascadeType.ALL, but actually requires a
>> 'delete-orphans' extension for the tests to succeed. Again, my many  
>> attempts
>> at hooking into the properties openjpa.BrokerFactory or  
>> openjpa.BrokerImpl
>> or openjpa.MetaDataFactory all met with failure of one sort or the  
>> other
>> (mostly ClassCast exceptions within the OpenJPA code).
>>
>> Any help would be greatly appreciated. I am working 'in  
>> collaboration with'
>> two Java User Groups (Torino and Trento), but it's really me who  
>> wrote most
>> of the code.
>>
>> The open source project, called Spikes (guess why) can be downloaded  
>> via
>> Subversion with the command:
>> svn checkout https://lab.jugtorino.it/svn/sandbox/spikes/trunk spikes
>> There is a Trac site at http://lab.jugtorino.it/trac/sandbox/wiki/Spikes 
>> ,
>> which I have converted to English in most places, and also an  
>> article (which
>> started the project rolling)
>> http://www.syger.it/Tutorials/JPA10Gotchas.html
>>
>> Best regards
>> John Leach, Verona, Italy
>> -- 
>> View this message in context:
>> http://www.nabble.com/InvalidStateException%3A-Attempt-to-set-column-%22client.version%22-to-two-different-values-tp17163045p17163045.html
>> Sent from the OpenJPA Users mailing list archive at Nabble.com.
>>
> 
> Craig Russell
> Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
> 408 276-5638 mailto:Craig.Russell@sun.com
> P.S. A good JDO? O, Gasp!
> 
> 
>  
> 

-- 
View this message in context: http://www.nabble.com/InvalidStateException%3A-Attempt-to-set-column-%22client.version%22-to-two-different-values-tp17163045p17165114.html
Sent from the OpenJPA Users mailing list archive at Nabble.com.


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