private JdbcWrapper(Counter sqlCounter) {
   super();
   assert sqlCounter != null;
   this.sqlCounter = sqlCounter;
   // servletContext reste null pour l'instant
   this.servletContext = null;
   connectionInformationsEnabled =
       Parameters.isSystemActionsEnabled() && !Parameters.isNoDatabase();
 }
 void initServletContext(ServletContext context) {
   assert context != null;
   this.servletContext = context;
   final String serverInfo = servletContext.getServerInfo();
   jboss = serverInfo.contains("JBoss") || serverInfo.contains("WildFly");
   glassfish =
       serverInfo.contains("GlassFish")
           || serverInfo.contains("Sun Java System Application Server");
   weblogic = serverInfo.contains("WebLogic");
   jonas = System.getProperty("jonas.name") != null;
   connectionInformationsEnabled =
       Parameters.isSystemActionsEnabled() && !Parameters.isNoDatabase();
 }