How to pass a value on selected row change? - jsf-2

Question

I have this permanent problem, I have a Datatable with value="#{myBean.Items}" var="itms", and I want to pass the selected item to my bean class.
In columns, we use <f:setPropertyActionListener value="#{itms}" target="#{myBean.selectedrow}" /> to pass the value, but I want it for Rows.
How to do that?, and where to put this listener?.
Thank you very much.

Answer 1

What richface version are you using?
For richfaces 4.3.x, the following example might do the trick:
XHTML:
<rich:extendedDataTable
id="myTable"
value="#{crudBean.rows}"
var="rowItem"
rowClasses="odd-row, even-row"
selection="#{crudBean.actionForm.selection}"
rows="#{crudBean.actionForm.occurrences}"
rowKeyVar="idx"
>
<a4j:ajax event="selectionchange"
listener="#{crudBean.actionForm.selectionListener}"
immediate="true" />
<rich:column width="100px" styleClass="#{rowItem.className}">
...stuff...
</rich:column>
<rich:column width="173px" styleClass="#{rowItem.className}">
...stuff...
</rich:column>
</rich:extendedDataTable>
The following code made sure the even got fired on row selection change:
<a4j:ajax event="selectionchange"
listener="#{crudBean.actionForm.selectionListener}"
immediate="true" />
The bean:
public void selectionListener(AjaxBehaviorEvent event) {
UIExtendedDataTable currentDataTable = (UIExtendedDataTable) event.getComponent();
Object originalKey = currentDataTable.getRowKey();
// debug log statement
log.debug("selectionListener() - rowKey = {} ", originalKey);
// debug log statement
if (log.isDebugEnabled()) {
log.debug("\n selectionListener() - rowIndex = {}", currentDataTable.getRowIndex());
}
if (currentDataTable.isRowAvailable()) {
// selectionItems.add(dataTable.getRowData());
IDataRow rowValue = transform((IDataGridRow)currentDataTable.getRowData());
changeActiveRow(rowValue);
}
}