Bug 947396

Created attachment 730672 [details]
Class cast exception from server.log

Description of problem:

This problem occurs on BRMS 5.3.1 roll-up #1: BZ-873846 on EAP 6.0.1. When user tries to log into jBPM Console, a class cast exception (see attachment) is thrown. It does not occur on BRMS 5.3.1.GA.

Further investigation leads to upgrade of Apache CXF from 2.4.8 to 2.4.10. Since 2.4.9, CXF contains the following static initializer in CXFNonSpringJaxrsServlet.java (**):

static {
  RuntimeDelegate runtimeDelegate = new  org.apache.cxf.jaxrs.impl.RuntimeDelegateImpl();
  RuntimeDelegate.setInstance(runtimeDelegate);
}

This could result in setting the jax-rs RuntimeDelegate to CXF implementation, even for the jBPM Console, which uses RestEasy.

Version-Release number of selected component (if applicable):

BRMS 5.3.1 roll-up #1: BZ-873846

How reproducible:

Deploy jboss-brms.war and jBPM console on EAP 6.0.1. Try to log into jBPM Console (business-central-server.war).
 
Actual results:

The class cast exception is thrown.

Expected results:

User logs in the jBPM Console without errors.

** http://grepcode.com/file_/repo1.maven.org/maven2/org.apache.cxf/cxf-rt-frontend-jaxrs/2.4.10/org/apache/cxf/jaxrs/servlet/CXFNonSpringJaxrsServlet.java/?v=diff&id2=2.4.8