Calling custom method on clicking search button in af:query panel

Create the query panel and table.

Now create a TestBean.java and put the follwing code in your bean. Also don't forget to register your bean in your taskflow with scope backingBean.

public void onQueryList(QueryEvent queryEvent) {
        QueryDescriptor qdes = queryEvent.getDescriptor();      
          System.out.println("NAME "+qdes.getName());     
          invokeQueryEventMethodExpression("#{bindings.EmployeesVOCriteriaQuery.processQuery}",queryEvent);
    
// Do extra coding whatever you want
    }


    private void invokeQueryEventMethodExpression(
                           String expression, QueryEvent queryEvent){
      FacesContext fctx = FacesContext.getCurrentInstance();
      ELContext elctx = fctx.getELContext();
      ExpressionFactory efactory =
      fctx.getApplication().getExpressionFactory();
      
      MethodExpression me = 
        efactory.createMethodExpression(elctx,expression, 
                                        Object.class, 
                                        new Class[]{QueryEvent.class});
        me.invoke(elctx, new Object[]{queryEvent});
        
                           }

Now go to your page and select af:query and put following line of code in "QueryListner".

#{backingBeanScope.TestBean.onQueryList}

Now test your page by clicking on search.

That's it :) Happy Coding.