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From "Patrick Linskey" <plins...@gmail.com>
Subject Re: Problems migrating to 1.0
Date Wed, 22 Aug 2007 06:28:08 GMT
Hi,

The code in ManagedClassSubclasser checks to see if
PersistenceCapable.class is assignable from each of the classes that
you pass in. Are you certain that the classes implement
PersistenceCapable at the time that ManagedClassSubclasser is being
invoked?

> Caused by: java.lang.ClassNotFoundException:
> com.sun.tools.attach.VirtualMachine

What JVM are you using?

-Patrick

On 8/21/07, Prashant Bhat <prashant.mr@gmail.com> wrote:
> Hi,
>
> I'm migrating from OpenJPA version id: openjpa-1.0.0-SNAPSHOT-r420667:559353
> to openjpa-1.0.0 and I'm not able run the application with the same set of
> procedures I used earlier(i.e. enhance entities and run).
>
> I've enhanced the entities after compilation, and disabled the runtime
> enhancement to achieve faster boot up by setting property '
> openjpa.RuntimeClassOptimization' to 'false'. (PS. I'm using Java6 and
> Spring-2.0.6).
>
> But I get the following exception when the entity manager is created.
>
> <openjpa-0.0.0-r420667:568173 nonfatal user error>
> org.apache.openjpa.persistence.ArgumentException: This configuration
> disallows runtime optimization, but the following listed types were not
> enhanced at build time or at class load time with a javaagent: "[all classes
> listed in persistence.xml]".
>     at
> org.apache.openjpa.enhance.ManagedClassSubclasser.prepareUnenhancedClasses(
> ManagedClassSubclasser.java:87)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at sun.reflect.NativeMethodAccessorImpl.invoke(
> NativeMethodAccessorImpl.java:39)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(
> DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.openjpa.kernel.AbstractBrokerFactory.loadPersistentTypes(
> AbstractBrokerFactory.java:287)
>     at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(
> AbstractBrokerFactory.java:197)
>     at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(
> DelegatingBrokerFactory.java:142)
>     at
> org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(
> EntityManagerFactoryImpl.java:192)
>     at
> org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(
> EntityManagerFactoryImpl.java:145)
>     at
> org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(
> EntityManagerFactoryImpl.java:56)
>     at
> org.springframework.orm.jpa.JpaTransactionManager.createEntityManagerForTransaction
> (JpaTransactionManager.java:391)
>
>
> I think, all entities are already enhanced properly, as it works with the
> earlier version of OpenJPA. I'm justing calling
> org.apache.openjpa.enhance.PCEnhancer on the project in eclipse with
> META-INF/persistence.xml being in the classpath.
> Is there any other parameters which are mandatory to enhance the classes?
>
> I didn't try with RuntimeClassOptimization allowed as it was also throwing
> exceptions(I had posted earlier about this)
>
> <openjpa-0.0.0-r420667:564688 fatal general error>
> org.apache.openjpa.persistence.PersistenceException:
> com.sun.tools.attach.VirtualMachine
>     at org.apache.openjpa.enhance.ClassRedefiner.redefineClasses(
> ClassRedefiner.java:111)
>     at
> org.apache.openjpa.enhance.ManagedClassSubclasser.prepareUnenhancedClasses(
> ManagedClassSubclasser.java:124)
> ...
> Caused by: java.lang.ClassNotFoundException:
> com.sun.tools.attach.VirtualMachine
> ...
>
> Could anybody please tell me the steps needed to run OpenJPA without
> RuntimeClassOptimization.
>
> Thanks,
> Prashant
>


-- 
Patrick Linskey
202 669 5907

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