public   void  textField1_processValueChange(ValueChangeEvent event) {
         try  {
       getSessionBean1().getPortRowSet().setObject( 1 ,textField1.getText());
        this .portDataProvider.refresh();
     }  catch  (Exception e) {
       error("Cannot switch to person 11" +portDataProvider.getValue("JULIA.PORT.NIP"));
    }  
    } 

   public   void  prerender() {
     try  {
        if  ( this .staticText1.getText() ==  null  ) {
        this .getPortDataProvider().cursorFirst();    
       getSessionBean1().getPortRowSet().setObject( 1 ,"");
       getPortDataProvider().refresh(); 
    } else { 
       getPortDataProvider().cursorFirst();
       getSessionBean1().getPortRowSet().setObject( 1 ,staticText1.getText());
       getPortDataProvider().refresh();
    }
       }  catch  (Exception e) {
              error("Cannot switch to person prer1" +
               this .portDataProvider.getValue("JULIA.PORT.NIP"));
        }
    }

Description: An unhandled exception occurred during the execution of the web application. Please review the following stack trace  for  more information regarding the error. 

Exception Details: java.lang.IllegalArgumentException 
  JULIA.PORT.NIP

Possible Source of Error: 
    Class  Name: com.sun.data.provider.impl.CachedRowSetDataProvider 
   File Name: CachedRowSetDataProvider.java 
   Method Name: getFieldKeyInternal 
   Line Number:  481  

Source not available. Information regarding the location of the exception can be identified using the exception stack trace below. 
 

Stack Trace: 

com.sun.data.provider.impl.CachedRowSetDataProvider.getFieldKeyInternal(CachedRowSetDataProvider.java: 481 )
com.sun.data.provider.impl.CachedRowSetDataProvider.getFieldKey(CachedRowSetDataProvider.java: 439 )
com.sun.data.provider.impl.AbstractDataProvider.getValue(AbstractDataProvider.java: 62 )
webapplication1.main.prerender(main.java: 731 )
com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.prerender(ViewHandlerImpl.java: 860 )
com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java: 295 )
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java: 87 )
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java: 221 )
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java: 117 )