[hibernate-issues] [Hibernate-JIRA] Commented: (HV-286) NoSuchMethodError on Persistence.getPersistenceUtil() when one follows the README file

[Hardy Ferentschik (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HV-286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=35570#action_35570 ] 

Hardy Ferentschik commented on HV-286:
--------------------------------------

Actually I think it is better to change the assembly to no include the jpa-api dependency at all. If you are using JPA you will get this dependency via Hibernate Core (or whatever JPA implementation you are using).

> NoSuchMethodError on Persistence.getPersistenceUtil() when one follows the README file
> --------------------------------------------------------------------------------------
>
>                 Key: HV-286
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-286
>             Project: Hibernate Validator
>          Issue Type: Patch
>          Components: documentation
>    Affects Versions: 4.0.2.GA
>         Environment: Hibernate Validator 4.0.2 GA
> Hibernate Core 3.5.0-Beta 2 (+ Annotations, no EntityManager)
> WebLogic 10MP1 (EE5/JPA1)
> JDK5
>            Reporter: Mathias De Belder
>            Assignee: Hardy Ferentschik
>            Priority: Trivial
>         Attachments: readme.patch
>
>
> The readme.txt file tells one to add all the libraries from
> the lib/ subdirectory of the distribution package on the classpath:
> "- Copy hibernate-validator-*.jar together will all jar files from lib into the 
>    classpath of your application. In case you are running on JDK5 you have to also include
>    all the jar files from the jdk5 subdirectory."
> The lib/ directory in 4.0.2GA contains jpa-api-2.0.Beta-20090815.jar, the public JPA2
> API. Included in that jar file is javax/persistence/PersistenceUtil.class.
> org.hibernate.validator.engine.resolver.DefaultTraversableResolver is the default
> TraversableResolver one gets when one calls Validation.buildDefaultValidationFactory().
> In its constructor, DefaultTraversableResolver calls detectJPA(), which looks for
> the PersistenceUtil class on the classpath. When this is found (in jpa-api-2.0.jar),
> the two methods in the TraversableResolver interface are delegated to JPATraversableResolver,
> which triggers an exception because it calls Persistence.getPersistenceUtil(), which is not
> implemented by JPA1 providers (in this case, WebLogic 10).
> See also http://java.sun.com/javaee/6/docs/api/javax/persistence/Persistence.html#getPersistenceUtil%28%29.
> The workaround is easy: don't have a javax.persistence.PersistenceUtil class file on
> your classpath when you do not have a JPA2 provider on there too.
> The attached patch adds a note in the README telling users not to add the jpa2-api
> jar if they do not intend to use Hibernate Validation 4 with an JPA2 EntityManager
> but instead with Hibernate Core or JPA1, or maybe even without an ORM framework.

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