Re: InvalidStateException: Attempt to set column "client.version" to two different values

[Craig L Russell]

Hi John,


test-compile:
    [javac] Compiling 29 source files to /Users/clr/spikes/trunk/bin

    [javac] class file has wrong version 50.0, should be 49.0

    [javac] import org.parancoe.yaml.Yaml;
    [javac]                          ^
    [javac] 1 error

more below...

On May 10, 2008, at 7:38 AM, John Leach wrote:

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. [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] Please remove or make sure it appears in the correct subdirectory of the classpath.

Dear list,
As part of a (very) small open source project to provide domain entity

using OpenJPA.


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.


updated (this is an optimistic locking field, and has a @Version
annotation), the SQL query being performed seems to be:

mapping and association examples, together with a programmatic interface to reach outside the JPA 1.0 specifications, I am struggling with two problems I had better warn you all that I am a freelance consultant working in Italy The first showstopper is an InvalidStateException: Attempt to set column "client.version" to two different values... where the version field is being UPDATE client SET lastUpdated = ?, version = ? WHERE id = ? AND version = ? [params=(Timestamp) 2008-05-10 15:58:16.593, (int) 3, (long) 3, (int) 2]

Craig

This SQL seems correct. It's updating the lastUpdated and version columns and verifying that the version is correct. Where does this error occur?

for what that's worth.

the same.

the wall to show for my efforts.


one-to-many example defines CascadeType.ALL, but actually requires a

(mostly ClassCast exceptions within the OpenJPA code).


of the code.


Subversion with the command:
svn checkout https://lab.jugtorino.it/svn/sandbox/spikes/trunk spikes

The same annotated entities work just fine with Hibernate and EclipseLink - I have even tried adding openjpac in the ant task, but the results remain 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 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 '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 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 The open source project, called Spikes (guess why) can be downloaded via 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
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Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:[EMAIL PROTECTED]
P.S. A good JDO? O, Gasp!

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