Can't add a blank row entry on to a navigation list dependable listbox

Hi All
Need some help please!
I am trying to build two dependable selectOnechoice list boxes. i adopt Frank's method and built the top level list box as navigation list.
my problem is I can't set a unselectedlabel property for this top level list box. I tried to set a the unselectedlabel property in page definition, but when the page rendered , the list has always got one row selected as default, instead of a blank row.
Is there anyway that I can fix this?
Thanks a lot

Hi,
this is because a navigation list is based on an iterator and the iterator always has a selected row.
Frank

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sorry i am a beginner in jsf..
In the crud Example i saw a code in MyCrudBean.java.i wrote the code like that but the same stage only one row is coming i cant add n items .
* Department.java
* Created on Nov 22, 2007, 4:43:12 PM
package datatable;
import Item.DeptDatabase;
import com.sun.rave.web.ui.appbase.AbstractPageBean;
import com.sun.webui.jsf.component.Body;
import com.sun.webui.jsf.component.Form;
import com.sun.webui.jsf.component.Head;
import com.sun.webui.jsf.component.Html;
import com.sun.webui.jsf.component.Link;
import com.sun.webui.jsf.component.Page;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import javax.faces.FacesException;
import javax.faces.component.html.HtmlDataTable;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
public class Department extends AbstractPageBean {
Connection con = null;
PreparedStatement StmtRateSel = null;
ResultSet rs = null;
private List<DeptDatabase> list = new ArrayList();
private int addCount = 1;
private HtmlDataTable myDataTable;
private static final int DEFAULT_TABLE_ROWS = 10;
// <editor-fold defaultstate="collapsed" desc="Managed Component Definition">
* Automatically managed component initialization. WARNING:
* This method is automatically generated, so any user-specified code inserted
* here is subject to being replaced.
private void _init() throws Exception {
private Page page1 = new Page();
public Page getPage1() {
return page1;
public void setPage1(Page p) {
this.page1 = p;
private Html html1 = new Html();
public Html getHtml1() {
return html1;
public void setHtml1(Html h) {
this.html1 = h;
private Head head1 = new Head();
public Head getHead1() {
return head1;
public void setHead1(Head h) {
this.head1 = h;
private Link link1 = new Link();
public Link getLink1() {
return link1;
public void setLink1(Link l) {
this.link1 = l;
private Body body1 = new Body();
public Body getBody1() {
return body1;
public void setBody1(Body b) {
this.body1 = b;
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public Form getForm1() {
return form1;
public void setForm1(Form f) {
this.form1 = f;
// </editor-fold>
* Construct a new Page bean instance.
public Department() {
public void deptsave() throws SQLException{
connection();
StmtRateSel = con.prepareStatement("execute prcPnsDepartmentIns");
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con.close();
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// Perform initializations inherited from our superclass
super.init();
// Perform application initialization that must complete
// before managed components are initialized
// TODO - add your own initialiation code here
// <editor-fold defaultstate="collapsed" desc="Managed Component Initialization">
// Initialize automatically managed components
// Note - this logic should NOT be modified
try {
_init();
} catch (Exception e) {
log("Department Initialization Failure", e);
throw e instanceof FacesException ? (FacesException) e: new FacesException(e);
// </editor-fold>
// Perform application initialization that must complete
// after managed components are initialized
// TODO - add your own initialization code here
* Callback method that is called after the component tree has been
* restored, but before any event processing takes place. This method
* will only be called on a postback request that
* is processing a form submit. Customize this method to allocate
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@Override
public void preprocess() {
* Callback method that is called just before rendering takes place.
* This method will only be called for the page that
* will actually be rendered (and not, for example, on a page that
* handled a postback and then navigated to a different page). Customize
* this method to allocate resources that will be required for rendering
* this page.
@Override
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* Callback method that is called after rendering is completed for
* this request, if <code>init()</code> was called (regardless of whether
* or not this was the page that was actually rendered). Customize this
* method to release resources acquired in the <code>init()</code>,
* <code>preprocess()</code>, or <code>prerender()</code> methods (or
* acquired during execution of an event handler).
@Override
public void destroy() {
* Return a reference to the scoped data bean.
* @return reference to the scoped data bean
protected SessionBean1 getSessionBean1() {
return (SessionBean1) getBean("SessionBean1");
* Return a reference to the scoped data bean.
* @return reference to the scoped data bean
protected RequestBean1 getRequestBean1() {
return (RequestBean1) getBean("RequestBean1");
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* @return reference to the scoped data bean
protected ApplicationBean1 getApplicationBean1() {
return (ApplicationBean1) getBean("ApplicationBean1");
private void connection() {
try{
Context ctx = new InitialContext();
System.out.println("context"+ctx);
if(ctx == null )
throw new Exception("Boom - No Context");
DataSource ds = (DataSource)ctx.lookup("BiteRiteJNDI");
if (ds != null) {
con = ds.getConnection();
System.out.println("connnn"+con);
catch(Exception e)
{System.out.println(e);}
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while (addCount-- > 0) {
DeptDatabase myNewDataItem = new DeptDatabase();
//myNewDataItem.setEditMode(true);
list.add(myNewDataItem);
//log(myDataList);
// Reset counter and go to last page.
addCount = 1;
// log(myDataList);
// Reset counter and go to last page.
//addCount = DEFAULT_ADD_COUNT;
pageLast();
System.out.println("in add itm");
// list.add(new DeptDatabase());
public List getListtt(){
return list;
public HtmlDataTable getMyDataTable() {
if (myDataTable == null) {
myDataTable = new HtmlDataTable();
myDataTable.setRows(DEFAULT_TABLE_ROWS);
return myDataTable;
private static void log(Object object) {
System.out.println("bejoy"+new Exception().getStackTrace()[1].getMethodName() + ": " + object);
public void pageLast() {
System.out.println("in Page last");
int count = myDataTable.getRowCount();
System.out.println("count"+count);
int rows = myDataTable.getRows();
System.out.println("rows"+rows);
if (rows != 0) { // Prevent ArithmeticException: / by zero.
System.out.println("not equals zero");
myDataTable.setFirst(count - ((count % rows != 0) ? count % rows : rows));
log(new Integer(myDataTable.getFirst()));
public void setListtt(List<DeptDatabase> list) {
this.list = list;
* CRUD table: set datatable.
* @param myDataTable The datatable.
public void setMyDataTable(HtmlDataTable myDataTable) {
this.myDataTable = myDataTable;
jsp
<?xml version="1.0" encoding="UTF-8"?>

<jsp:root version="2.1" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:webuijsf="http://www.sun.com/webui/webuijsf">
<jsp:directive.page contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"/>
<f:view>
<webuijsf:page binding="#{Department.page1}" id="page1">
<webuijsf:html binding="#{Department.html1}" id="html1">
<webuijsf:head binding="#{Department.head1}" id="head1">
<webuijsf:link binding="#{Department.link1}" id="link1" url="/resources/stylesheet.css"/>
</webuijsf:head>
<webuijsf:body binding="#{Department.body1}" id="body1" style="-rave-layout: grid">
<webuijsf:form binding="#{Department.form1}" id="form1">
<h:dataTable binding="#{Department.myDataTable}" id="myDataTable" value="#{Department.listtt}" var="dataItem">
<h:column>
<f:facet name="header">
<h:outputText value="Departments"/>
</f:facet>
<h:inputText value="#{dataItem.department}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="StockItem"/>
</f:facet>
<h:inputText value="#{dataItem.stockItem}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="StockUnit"/>
</f:facet>
<h:inputText value="#{dataItem.stockUnit}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="MaxStock"/>
</f:facet>
<h:inputText value="#{dataItem.maxStock}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="MinStock"/>
</f:facet>
<h:inputText value="#{dataItem.minStock}"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="ReorderLevel"/>
</f:facet>
<h:inputText value="#{dataItem.reorderlevel}"/>
</h:column>
</h:dataTable>
<h:commandButton action="#{Department.addDataItem}" value="Add"/>
</webuijsf:form>
</webuijsf:body>
</webuijsf:html>
</webuijsf:page>
</f:view>
</jsp:root>
i dont know wats the problem??
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Edited by: Luís Filipe Duarte on Jun 26, 2009 4:17 PM

Viva Vitor,
Antes de mais obrigado pela resposta.
È esse mesmo o meu objectivo. Passo a explicar qual é o objectivo deste desenvolvimento. O que se pretende é que quando um utilizador escreva o código de um artigo numa linha da matrix de um documento de venda o add-on vai ler esse artigo e de seguida consultar uma tabela de utilizador que ja esta criada para validar se esse artigo tem outros artigos associados, e se tiver, entao o addon tem que os escrever nas linhas imediatamente a seguir. Eu queria mesmo, era escrever qual era o artigo e qual a respectiva quantidade. Eu consigo encontrar qual o artigo que o utlizador escreve e qual os artigos associados. O meu problema acontece quando tendo adicionar as novas linhas.
Com o codigo que se segue podes ver que estou a atribuir a uma EditText o codigo do artigo a escrever. O problema é se correr em modo debug consigo ver que a aplicação chega a essa linha
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e volta para trás, ou seja entra num loop e nao sai daqui.
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Eu para adicionar uma nova linha o que tenho de fazer? não vasta passar a informação do item code?
Este desenvolvimento é para implementar ecoreee no sap. Nao sei já tiveste alguma coisa dessas entre mãos.
Obrigado mais uma vez pela atenção. Espero também um dia poder ajudar.
Com os melhores cumprimentos.
Luis duarte

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Can't add a blank row entry on to a navigation list dependable listbox

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