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https://issues.apache.org/jira/browse/OPENJPA-1454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12797350#action_12797350
]
Mark Struberg commented on OPENJPA-1454:
----------------------------------------
@Rick here is an example stacktrace:
Caused by: java.lang.ClassNotFoundException:
org.apache.openjpa.lib.util.Closeable
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1302)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.setBrokerFactory(EntityManagerFactoryImpl.java:95)
at
org.apache.openjpa.persistence.EntityManagerFactoryValue.newFactory(EntityManagerFactoryValue.java:53)
at
org.apache.openjpa.persistence.JPAFacadeHelper.toEntityManagerFactory(JPAFacadeHelper.java:75)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:109)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:151)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:59)
at
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:150)
at
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:70)
at
org.apache.webbeans.resource.spi.se.ResourceServiceImpl.getPersistenceUnit(ResourceServiceImpl.java:111)
at
org.apache.webbeans.resource.spi.se.ResourceServiceImpl.getPersistenceContext(ResourceServiceImpl.java:125)
at
org.apache.webbeans.resource.spi.se.ResourceServiceImpl.getResource(ResourceServiceImpl.java:59)
at
org.apache.webbeans.resource.OpenWebBeansResourcePlugin.injectResources(OpenWebBeansResourcePlugin.java:61)
at
org.apache.webbeans.component.AbstractInjectionTargetBean.postConstructDefault(AbstractInjectionTargetBean.java:230)
at
org.apache.webbeans.component.AbstractInjectionTargetBean.postConstruct(AbstractInjectionTargetBean.java:213)
at
org.apache.webbeans.component.AbstractInjectionTargetBean.afterConstructor(AbstractInjectionTargetBean.java:199)
at
org.apache.webbeans.component.AbstractInjectionTargetBean.createDefaultInstance(AbstractInjectionTargetBean.java:136)
And this is the Instrumentation part. Please note that only openjpa-kernel gets
injected into the root classpath as agent-jar, thus the lib.log.Log causes the
clash.
Exception in thread "Attach Listener" java.lang.NoClassDefFoundError:
org/apache/openjpa/lib/log/Log
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
at java.lang.Class.getMethod0(Class.java:2670)
at java.lang.Class.getMethod(Class.java:1603)
at
sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:294)
at
sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain(InstrumentationImpl.java:348)
Caused by: java.lang.ClassNotFoundException: org.apache.openjpa.lib.log.Log
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
... 6 more
Agent failed to start!
txs and LieGrue,
strub
> InstrumentationFactory crashes the tomcat WebappClassLoader by injecting
> org.apache.openjpa classes into the SystemClassLoader
> ------------------------------------------------------------------------------------------------------------------------------
>
> Key: OPENJPA-1454
> URL: https://issues.apache.org/jira/browse/OPENJPA-1454
> Project: OpenJPA
> Issue Type: Bug
> Components: UnenhancedClasses
> Affects Versions: 2.0.0-M3
> Reporter: Mark Struberg
>
> The InstrumentationFactory tries to find the jar containing the manifest with
> the pre-main and attaches this jar to the VM.
> This has the side effect that all classes which get loaded via the
> Instrumentation are added to the 'classes' Vector of the SystemClassLoader.
> And this causes a problem when running OpenJPA in a WebApplication - because
> the SystemClassLoader only contains a few of those class definitions, and
> e.g. executing
> public void setBrokerFactory(BrokerFactory factory) {
> _factory = new DelegatingBrokerFactory(factory,
> PersistenceExceptions.TRANSLATOR);
> }
> crashes the WebApp because org.apache.openjpa.util.Exceptions is available in
> the SystemClassLoader but the dependent J2DoPrivHelper is not.
> This is even more problematic when using openjpa-lib, openjpa-kernel, etc as
> single jars (instead of openjpa-all), because in this case only
> openjpa-kernel gets injected into the VMs system classpath - causing the
> agent to subsequently crash because all the classes from openjpa-lib
> obviously cannot be found.
> This might also be an explanation to a few other open JIRAs I've read through
> the last few days.
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