NullPointerException raised when calling isWrapperFor(...) on a closed connection in JBoss EAP

Issue

• Application called Connection.close() on a connection managed by the JBoss EAP pool

• Subsequently, an attempt made to call isWrapperFor(...) on that connection results in an NPE

  ... java.lang.NullPointerException
          at org.jboss.jca.adapters.jdbc.WrappedConnection.getWrappedObject(WrappedConnection.java:1914)
          at org.jboss.jca.adapters.jdbc.WrappedConnection.getWrappedObject(WrappedConnection.java:64)
          at org.jboss.jca.adapters.jdbc.JBossWrapper.isWrapperFor(JBossWrapper.java:68)
          ...