PI98177:package objects not available from archive class loaders

Download Description

PI98177 resolves the following problem:

ERROR DESCRIPTION:
The classloader for the resource adapter is not working correctly and is returning null for any Class.getPackage().

When a resource adapter is installed on WebSphere Application Server, and inside this resource adapter classes (loaded using resource adapter classloader), if you have a code SomeClass.class.getPackage().getName(), it will crash in NullPointerException because getPackage() will return null.

LOCAL FIX:
None

PROBLEM SUMMARY
When installing a resource adapter, a NullPointerException will occur if resource adapter code attempts to use a package object for a resource adapter or resource adapter related class.
For example:
Caused by: java.lang.NullPointerException
at org.jboss.logging.LoggerProviders.logProvider(LoggerProviders.ja va:156)
at org.jboss.logging.LoggerProviders.tryJDK(LoggerProviders.java:11 2)
at org.jboss.logging.LoggerProviders.findProvider(LoggerProviders.j ava:107)
at org.jboss.logging.LoggerProviders.find(LoggerProviders.java:34)
at org.jboss.logging.LoggerProviders. (LoggerProviders.java: 31)
at java.lang.J9VMInternals.ensureError(J9VMInternals.java:141)
at java.lang.J9VMInternals.recordInitializationFailure(J9VMInternal s.java:130)
at org.jboss.logging.Logger.getLogger(Logger.java:2465)
at org.jboss.logging.Logger.getLogger(Logger.java:2490)
at org.apache.activemq.artemis.ra.ActiveMQResourceAdapter. ( ActiveMQResourceAdapter.java:71)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeCons tructorAccessorImpl.java:88)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Delega tingConstructorAccessorImpl.java:57)
at java.lang.reflect.Constructor.newInstance(Constructor.java:437)
at com.ibm.ws.management.application.J2CAppUtils$1.run(J2CAppUtils. java:416)
at com.ibm.ws.security.util.AccessController.doPrivileged(AccessCon troller.java:118)
at com.ibm.ws.management.application.J2CAppUtils.getDefinedProperti es(J2CAppUtils.java:413)
at com.ibm.ws.management.application.J2CAppUtils.getDefinedProperti es(J2CAppUtils.java:543)
at com.ibm.ws.management.component.InstallRAHelper.loadBeanProperty WithType(InstallRAHelper.java:253)
at com.ibm.ws.management.component.InstallRAHelper.loadBeanProperty (InstallRAHelper.java:242)
at com.ibm.ws.management.component.AdminOperationsMBean.createJ2CPo st10ResourceAdapter(AdminOperationsMBean.java:1413)
at com.ibm.ws.management.component.AdminOperationsMBean.createJ2CPo st10ResourceAdapter(AdminOperationsMBean.java:1234)
at com.ibm.ws.management.component.AdminOperationsMBean._getResourc eAdapterFromRAR(AdminOperationsMBean.java:1086)
at com.ibm.ws.management.component.AdminOperationsMBean.getResource AdapterFromRAR(AdminOperationsMBean.java:967)

This specific case occured from JBOSS logging code. The JBOSS code is attempting to retrieve a fully qualified package name for a class loaded in relationship to a resource adapter class.
In this specific case, the preferred alternative solution is to modify the JBOSS logging code to obtain the fully qualified package name directly from the fully qualified class name. Use of a package object is unnecessary for obtaining the package name of a loaded class.

USERS AFFECTED:
All users of IBM WebSphere Application Server

PROBLEM DESCRIPTION:
NullPointerException when installing resource adapter.

RECOMMENDATION:
None

PROBLEM CONCLUSION:
A code update was made, including a new enablement custom property. The code update, when enabled, causes package objects to be created when loading application classes. This ensures that a non-null package is available for any loaded class.

The new custom property is "com.ibm.ws.wtp.package.loads". This new custom property must be set to "true" in the failing process to enable the new code. For simplicity, the new custom property can be safely set on all application server and deployment manager nodes.

The fix for this APAR is currently targeted for inclusion in fix packs 8.5.5.15 and 9.0.0.10. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980