2 Replies Latest reply on Mar 3, 2009 3:11 PM by cm.tcomp

    scrollabledatatable selection problem cast error

    cm.tcomp
    cm.tcomp Mar 2, 2009 3:05 PM

      Hi, I have a question, and I'm not sure if I have something wrong in my environment or if it is a bug...

      I have some code similar to the scrollabledatatable demo code, using SimpleSelection, to find the user selected rows.

      Using the richfaces-ui-3.2.2.GA-bin, the code i have, and the demo code, works.

      I tried to upgrade to the richefaces-ui-3.3.0.GA-bin, and the code broke, with

      java.lang.ClassCastException: java.lang.Integer cannot be cast to org.richfaces.model.ScrollableTableDataModel$SimpleRowKey
      javax.faces.el.EvaluationException: java.lang.ClassCastException: java.lang.Integer cannot be cast to org.richfaces.model.ScrollableTableDataModel$SimpleRowKey
      at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:91)
      at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91)
      at javax.faces.component.UICommand.broadcast(UICommand.java:383)



      The casting error is occuring in the assignment of
      SimpleRowKey key = (SimpleRowKey) iterator.next();

      When I get the class of iterator.next() with 

      public String takeSelection() {
 getSelectedCars().clear();
 Iterator<Object> iterator = getSelection().getKeys();
 while (iterator.hasNext()){

/*
 SimpleRowKey key = (SimpleRowKey) iterator.next();
 getSelectedCars().add(getAllCars().get(key.intValue()));
*/
 Object temp = iterator.next();
 System.out.println( "****takeSelection() called, object type is "
 + temp.getClass() );
 SimpleRowKey key = (SimpleRowKey) temp;
 getSelectedCars().add(getAllCars().get(key.intValue()));

 }
 return null;
 }


      with the 3.2.2 libraries, I get the correct class, org.richfaces.model.ScrollableTableDataModel$SimpleRowKey.

      with the 3.3.0 libraries, I get
      takeSelection() called, object type is class java.lang.Integer

      any possible ideas? thanks in advance....



      Environment -
      netbeans6.1
      Java 1.6.0_06

      Code - using code from the scrollabledatatable demo on the community page slightly modified - http://www.jboss.org/community/docs/DOC-11857, will reproduce the error.

      For the calling code, I used the the demo xhtml, and put it into a jsp file 

      <%@taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@taglib uri="http://richfaces.org/rich" prefix="rich"%>

<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">

<html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>JSP Page</title>
 </head>
 <body>
 <h2>Hello World!</h2>
 </body>
 <f:view>

 <h:form>
 <%--
 --%>
 <rich:spacer height="30" ></rich:spacer>
 <rich:scrollableDataTable rowKeyVar="rkv" frozenColCount="1" height="400px"
 width="700px" id="carList" rows="40" columnClasses="col"
 value="#{dataTableScrollerBean.allCars}" var="category" sortMode="single"
 selection="#{dataTableScrollerBean.selection}">
 <rich:column id="make">
 <f:facet name="header"><h:outputText styleClass="headerText" value="Make" ></h:outputText></f:facet>
 <h:outputText value="#{category.make}" ></h:outputText>
 </rich:column>
 <rich:column id="model">
 <f:facet name="header"><h:outputText styleClass="headerText" value="Model" ></h:outputText></f:facet>
 <h:outputText value="#{category.model}" ></h:outputText>
 </rich:column>
 <rich:column id="price">
 <f:facet name="header"><h:outputText styleClass="headerText" value="Price" ></h:outputText></f:facet>
 <h:outputText value="#{category.price}" ></h:outputText>
 </rich:column>
 <rich:column id="mileage">
 <f:facet name="header"><h:outputText styleClass="headerText" value="Mileage" ></h:outputText></f:facet>
 <h:outputText value="#{category.mileage}" ></h:outputText>
 </rich:column>
 <rich:column width="200px" id="vin">
 <f:facet name="header"><h:outputText styleClass="headerText" value="VIN" ></h:outputText></f:facet>
 <h:outputText value="#{category.vin}" ></h:outputText>
 </rich:column>
 <rich:column id="stock">
 <f:facet name="header"><h:outputText styleClass="headerText" value="Stock" ></h:outputText></f:facet>
 <h:outputText value="#{category.stock}" ></h:outputText>
 </rich:column>
 </rich:scrollableDataTable>
 <rich:spacer height="20px"></rich:spacer>

 <%--
 --%>
 <a4j:commandButton value="Show Current Selection" reRender="table"
 action="#{dataTableScrollerBean.takeSelection}"
 oncomplete="javascript:Richfaces.showModalPanel('panel');"></a4j:commandButton>
 </h:form>

 <rich:modalPanel id="panel" autosized="true">
 <f:facet name="header">
 <h:outputText value="Selected Rows"></h:outputText>
 </f:facet>
 <f:facet name="controls">
 <span style="cursor:pointer" onclick="javascript:Richfaces.hideModalPanel('panel')">X</span>
 </f:facet>
 <rich:dataTable value="#{dataTableScrollerBean.selectedCars}" var="sel" id="table">
 <rich:column>
 <f:facet name="header"><h:outputText value="Make" ></h:outputText></f:facet>
 <h:outputText value="#{sel.make}" ></h:outputText>
 </rich:column>
 <rich:column id="model">
 <f:facet name="header"><h:outputText value="Model" ></h:outputText></f:facet>
 <h:outputText value="#{sel.model}" ></h:outputText>
 </rich:column>
 <rich:column id="price">
 <f:facet name="header"><h:outputText value="Price" ></h:outputText></f:facet>
 <h:outputText value="#{sel.price}" ></h:outputText>
 </rich:column>
 <rich:column id="mileage">
 <f:facet name="header"><h:outputText value="Mileage" ></h:outputText></f:facet>
 <h:outputText value="#{sel.mileage}" ></h:outputText>
 </rich:column>
 <rich:column id="stock">
 <f:facet name="header"><h:outputText value="Stock" ></h:outputText></f:facet>
 <h:outputText value="#{sel.stock}" ></h:outputText>
 </rich:column>
 </rich:dataTable>
 </rich:modalPanel>

 </f:view>
</html>


      For the backing bean, I used the demo bean, slightly modified in the takeselection routine to return the class of the interator.next() object. 




      package org.richfaces.datatablescroller;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Random;

import org.richfaces.demo.datafilterslider.DemoInventoryItem;
import org.richfaces.model.ScrollableTableDataModel.SimpleRowKey;
import org.richfaces.model.selection.SimpleSelection;

/**
 * @author Nick Belaevski - nbelaevski@exadel.com
 * created 02.03.2007
 *
 */
public class DataTableScrollerBean {
 private SimpleSelection selection = new SimpleSelection();
 private ArrayList<DemoInventoryItem> selectedCars = new ArrayList<DemoInventoryItem>();
 private static int DECIMALS = 1;
 private static int ROUNDING_MODE = BigDecimal.ROUND_HALF_UP;

 private List <DemoInventoryItem> allCars = null;

 public List <DemoInventoryItem> getAllCars() {
 synchronized (this) {
 if (allCars == null) {
 allCars = new ArrayList<DemoInventoryItem>();
 for (int k = 0; k <= 5; k++) {
 try{
 switch (k) {
 case 0:
 allCars.addAll(createCar("Chevrolet","Corvette", 5));
 allCars.addAll(createCar("Chevrolet","Malibu", 8));
 allCars.addAll(createCar("Chevrolet","S-10", 10));
 allCars.addAll(createCar("Chevrolet","Tahoe", 6));
 break;

 case 1:
 allCars.addAll(createCar("Ford","Taurus", 12));
 allCars.addAll(createCar("Ford","Explorer", 11));
 break;
 case 2:
 allCars.addAll(createCar("Nissan","Maxima", 9));
 break;
 case 3:
 allCars.addAll(createCar("Toyota","4-Runner", 7));
 allCars.addAll(createCar("Toyota","Camry", 15));
 allCars.addAll(createCar("Toyota","Avalon", 13));
 break;
 case 4:
 allCars.addAll(createCar("GMC","Sierra", 8));
 allCars.addAll(createCar("GMC","Yukon", 10));
 break;
 case 5:
 allCars.addAll(createCar("Infiniti","G35", 6));
 break;
 /*case 6:
 allCars.addAll(createCar("UAZ","469", 6));
 break;*/
 default:
 break;
 }
 }catch(Exception e){
 System.out.println("!!!!!!loadAllCars Error: " + e.getMessage());
 e.printStackTrace();
 }
 }
 }
 }

 return allCars;
 }

 public int genRand() {
 return rand(1,10000);
 }

 public List <DemoInventoryItem> createCar(String make, String model, int count){

 ArrayList <DemoInventoryItem> iiList = null;

 try{
 int arrayCount = count;

 DemoInventoryItem[] demoInventoryItemArrays = new DemoInventoryItem[arrayCount];

 for (int j = 0; j < demoInventoryItemArrays.length; j++){
 DemoInventoryItem ii = new DemoInventoryItem();

 ii.setMake(make);
 ii.setModel(model);
 ii.setStock(randomstring(6,7));
 ii.setVin(randomstring(14,15));
 ii.setMileage(new BigDecimal(rand(5000,80000)).setScale(DECIMALS, ROUNDING_MODE));
 ii.setMileageMarket(new BigDecimal(rand(25000,45000)).setScale(DECIMALS, ROUNDING_MODE));
 ii.setPrice(new Integer(rand(15000,55000)));
 ii.setPriceMarket(new BigDecimal(rand(15000,55000)).setScale(DECIMALS, ROUNDING_MODE));
 ii.setDaysLive(rand(1,90));
 ii.setChangeSearches(new BigDecimal(rand(0,5)).setScale(DECIMALS, ROUNDING_MODE));
 ii.setChangePrice(new BigDecimal(rand(0,5)).setScale(DECIMALS, ROUNDING_MODE));
 ii.setExposure(new BigDecimal(rand(0,5)).setScale(DECIMALS, ROUNDING_MODE));
 ii.setActivity(new BigDecimal(rand(0,5)).setScale(DECIMALS, ROUNDING_MODE));
 ii.setPrinted(new BigDecimal(rand(0,5)).setScale(DECIMALS, ROUNDING_MODE));
 ii.setInquiries(new BigDecimal(rand(0,5)).setScale(DECIMALS, ROUNDING_MODE));
 demoInventoryItemArrays[j] = ii;

 }

 iiList = new ArrayList<DemoInventoryItem>(Arrays.asList(demoInventoryItemArrays));

 }catch(Exception e){
 System.out.println("!!!!!!createCategory Error: " + e.getMessage());
 e.printStackTrace();
 }
 return iiList;
 }

 public static int rand(int lo, int hi)
 {
 Random rn2 = new Random();
 //System.out.println("**" + lo);
 //System.out.println("**" + hi);
 int n = hi - lo + 1;
 int i = rn2.nextInt() % n;
 if (i < 0)
 i = -i;
 return lo + i;
 }

 public static String randomstring(int lo, int hi)
 {
 int n = rand(lo, hi);
 byte b[] = new byte[n];
 for (int i = 0; i < n; i++)
/* b+ = (byte)rand('A','Z' ); */
 b = (byte) rand('A', 'Z');
 return new String(b);
 }

 public SimpleSelection getSelection() {
 return selection;
 }

 public void setSelection(SimpleSelection selection) {
 System.out.println("Setting Started");
 this.selection = selection;
 System.out.println("Setting Complete");
 }

 public String takeSelection() {
 getSelectedCars().clear();
 Iterator<Object> iterator = getSelection().getKeys();
 while (iterator.hasNext()){

 /*
 SimpleRowKey key = (SimpleRowKey) iterator.next();
 getSelectedCars().add(getAllCars().get(key.intValue()));
 */
 Object temp = iterator.next();
 System.out.println( "****takeSelection() called, object type is "
 + temp.getClass() );
 SimpleRowKey key = (SimpleRowKey) temp;
 getSelectedCars().add(getAllCars().get(key.intValue()));

 }
 return null;
 }

 public ArrayList<DemoInventoryItem> getSelectedCars() {
 return selectedCars;
 }

 public void setSelectedCars(ArrayList<DemoInventoryItem> selectedCars) {
 this.selectedCars = selectedCars;
 }
 }


      all other files are from the current live demo source, and packages were construted as listed in the package definitions..

      • 1606 Views
      • Tags:
        • 1. Re: scrollabledatatable selection problem cast error
          konstantin.mishin
          konstantin.mishin Mar 3, 2009 6:13 AM (in response to cm.tcomp)

          Since version 3.3.0 scrollabledatatable use by default less problematic org.richfaces.model.ModifiableModel instead of org.richfaces.model.ScrollableTableDataModel. This model use java.lang.Integer as rowKey. So you might do something like this:

           getSelectedCars().add(getAllCars().get(iterator.next()));

          instead of 
           Object temp = iterator.next();
 SimpleRowKey key = (SimpleRowKey) temp;
 getSelectedCars().add(getAllCars().get(key.intValue()));


            • Actions
          • 2. Re: scrollabledatatable selection problem cast error
            cm.tcomp
            cm.tcomp Mar 3, 2009 3:11 PM (in response to cm.tcomp)

            Thank you for your reply.... I wasn't sure what had happened....

            For additional questions, where would I find information in the documentation on this, and where is the documentation on org.richfaces.model.ModifiableModel located? I looked in the 3.3.0 framework and component api docs, and didn't find it..... thank you again in advance.

              • Actions