How to get row index in dynamically populated table?

Question

Hi,
I am following example given in http://balusc.xs4all.nl/srv/dev-jep-dat.html to Dynamically populate datatable. How can I get row index while populating table in populateDynamicDataTable() method
private List myList;
private String[] headers; // Optional.
private HtmlDataTable dynamicDataTable;
// Actions ----------------------------------------------------------
public void loadMyList() {
// Set headers (optional).
headers = new String[] {"header1", "header2", "header3"};
// Set rows. This is a stub example, just do your dynamic thing.
String[] row1 = {"ID1", "Name1", "Value1"};
String[] row2 = {"ID2", "Name2", "Value2"};
String[] row3 = {"ID3", "Name3", "Value3"};
// Convert rows to List and set the List.
myList = new ArrayList();
myList.add(Arrays.asList(row1));
myList.add(Arrays.asList(row2));
myList.add(Arrays.asList(row3));
public void populateDynamicDataTable() {
//*********************** I want current row in this method *************//
// Any columns?
if (myList != null && myList.size() > 0) {
dynamicDataTable = new HtmlDataTable();
// Get amount of columns.
int columns = ((List) myList.get(0)).size();
// Set columns.
for (int i = 0; i < columns; i++) {
// Set header (optional).
UIOutput header = new UIOutput();
header.setValue(headers);
// Set output.
UIOutput output = new UIOutput();
ValueBinding myItem =
FacesContext
.getCurrentInstance()
.getApplication()
.createValueBinding("#{myItem[" + i + "]}");
output.setValueBinding("value", myItem);
// Set column.
UIColumn column = new UIColumn();
column.setHeader(header);
column.getChildren().add(output);
// Add column.
dynamicDataTable.getChildren().add(column);
// Getters ----------------------------------------------------------
public List getMyList() {
return myList;
public HtmlDataTable getDynamicDataTable() {
if (dynamicDataTable == null) {
loadMyList(); // Reload to get most recent data.
populateDynamicDataTable();
return dynamicDataTable;
// Setters ----------------------------------------------------------
public void setMyList(List myList) {
this.myList = myList;
public void setDynamicDataTable(HtmlDataTable dynamicDataTable) {
this.dynamicDataTable = dynamicDataTable;
I have tried dynamicDataTable.getRowIndex, but it returns -1
Is there any other way?
Thanks ,
Chitra.

Answer 1

When you dynamically populate a datatable, you're populating the columns, not the actual rows.
Just add EL to the styleClass attribute, like:styleClass="#{myBean.myTable.rowIndex == 1 ? 'highlightedClass' : 'defaultClass'}"where 'myTable' refers to a HtmlDataTable property in the backing bean.