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Re: [eclipselink-users] Enable eclipse-link dynamic weaving in an Eclipse RCP application
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Hi,
I have seen this exception on occasion when setting up a new SE (non-EE container) application when the persistence provider agent is not set. Usually you get "persistence provider not found" - but you may get the following depending on your persistence.xml where even though you are running EntityManagerSetup code from the JPA provider - the agent is not set.
the key is the note:
"is incorrect when global instrumentation is null"
In an EE server everything is managed properly for you - weaving is on by default
In a non-OSGI (regular PDE) project, you set the weaving/instrumentation agent in one of at least 3 ways
1) include the aggregated eclipselink.jar (it contains the services directory)
2) include the resources folder of the JPA subproject
<classpathentry kind="lib" path="/org.eclipse.persistence.jpa/resource" />
3) include the services/javax.persistence.spi.PersistenceProvider file in your META-INF where your persistence.xml lives
- set it to "org.eclipse.persistence.jpa.PersistenceProvider"
This is all PDE related - so may not help in this OSGI case.
Thank you
/michael
-----Original Message-----
From: eclipselink-users-bounces@xxxxxxxxxxx [mailto:eclipselink-users-bounces@xxxxxxxxxxx] On Behalf Of cliviu75
Sent: November 7, 2011 05:05
To: eclipselink-users@xxxxxxxxxxx
Subject: [eclipselink-users] Enable eclipse-link dynamic weaving in an Eclipse RCP application
Hi,
I'm trying to enable eclipse-link dynamic weaving in an Eclipse RCP
application.
I've got the following stack trace:
Internal Exception: javax.persistence.PersistenceException: Exception
[EclipseLink-28022] (Eclipse Persistence Services - 2.3.0.v20110604-r9504):
org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Value [true] for the property [eclipselink.weaving]
is incorrect when global instrumentation is null, value should either be
null, false, or static.
at
org.eclipse.persistence.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources(PersistenceUnitLoadingException.java:126)
at
org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:115)
at ServiceFactory.<init>(ServiceFactory.java:100)
at ServiceFactory.login(ServiceFactory.java:69)
at Application.login(Application.java:79)
at Application.start(Application.java:26)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by: javax.persistence.PersistenceException: Exception
[EclipseLink-28022] (Eclipse Persistence Services - 2.3.0.v20110604-r9504):
org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Value [true] for the property [eclipselink.weaving]
is incorrect when global instrumentation is null, value should either be
null, false, or static.
at
org.eclipse.persistence.internal.jpa.deployment.JavaSECMPInitializer.checkWeaving(JavaSECMPInitializer.java:123)
at
org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.callPredeploy(JPAInitializer.java:88)
at
org.eclipse.persistence.jpa.PersistenceProvider.createEntityManagerFactory(PersistenceProvider.java:105)
... 17 more
Caused by: Exception [EclipseLink-28022] (Eclipse Persistence Services -
2.3.0.v20110604-r9504):
org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Value [true] for the property [eclipselink.weaving]
is incorrect when global instrumentation is null, value should either be
null, false, or static.
at
org.eclipse.persistence.exceptions.EntityManagerSetupException.wrongWeavingPropertyValue(EntityManagerSetupException.java:253)
... 20 more
I mention that I tried to follow the instruction from this page :
http://wiki.eclipse.org/EclipseLink/Examples/OSGi/LazyLoadingRCP
the OSGi
Anyway, nothing happened when using the osgi PersistenceProvider to create
an EntityManagerFactory
with ... new
org.eclipse.persistence.jpa.osgi.PersistenceProvider().createEntityManagerFactory()
for the simple reason that in class OSGiInitializer, check weaving overrides
the weaving property
/**
* Check whether weaving is possible and update the properties and
variable as appropriate
* @param properties The list of properties to check for weaving and
update if weaving is not needed
*/
public void checkWeaving(Map properties){
String weaving = "false";
properties.put(PersistenceUnitProperties.WEAVING, weaving);
shouldCreateInternalLoader=false;
}
In my persistence.xml I have set :
<property name="eclipselink.weaving" value="true" />
Thank you very much in advance for any hint
--
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