rootCause peut être final

@@ -7,7 +7,7 @@ import javax.ejb.ApplicationException;
  */
  */
 @ApplicationException(rollback = true)
 @ApplicationException(rollback = true)
 public class IndexingException extends Exception {
 public class IndexingException extends Exception {
-    Throwable rootCause;
+    final Throwable rootCause;
 
 
     IndexingException(Throwable rootCause) {
     IndexingException(Throwable rootCause) {
         this.rootCause = rootCause;
         this.rootCause = rootCause;