richfaces ListDataModel

[errorken]

Does someone know what the purpose is of the "org.richfaces.model.impl.ListDataModel" ? I can't seem to find decent information about this class.

I was trying to put a list of custom objects as 'wrappedData' in a 'ListDataModel' and pass this as the 'value' to the dataTable. This resulted in a classCastException.

I allready found out that there are two base classes which can be used for extended datamodel support. But it seems to be a little bit heavy to implement all this since I only want to determine the selected row (yes, I could also accomplish this with binding the datatable and the invoking some 'selectedRow' method or something) but I want this to be on the ListDataModel (getRowData)

[errorken]

Btw; the classCast occurs in "ScrollableTableDataModel" (of which ListDataModel extends) on line 76: public void walk(FacesContext context, DataVisitor visitor, Range range,
Object argument)

ScrollableTableDataRange sequenceRange = (ScrollableTableDataRange) range;

Its a 'SequenceRange' and not a 'ScrollableTableDataRange' which is being passed.

[konstantin.mishin]

We need more info about your problem. Attach sources, please.

[errorken]

Well, there is not much source to it :)

I have a backingbean 'testBean' which exposes this method:

public ListDataModel getDataTableModel() {
 ListDataModel model = new ListDataModel();
 List<Person> list = new ArrayList<Person>();

 for (int i = 0; i < 100; i++) {
 Person p = new Person();
 p.setFirstName("firstname " + i);
 p.setName("name " + i);
 list.add(p);
 }
 model .setWrappedData(list);
 return model;
 }

Then I have my dataTable, on which binds to the 'testBean' getDataTableModel method:

 <rich:dataTable id="dataTable" value="#{testBean.dataTableModel}" var="row" rows="10">
 <f:facet name="header">
 <rich:column breakBefore="true">
 <rich:datascroller for="dataTable" immediate="true" ajaxSingle="true" />
 </rich:column>
 </f:facet>

 <rich:column sortable="true">
 <h:outputText value="#{row.name}"/>
 </rich:column>

 <rich:column sortable="true">
 <h:outputText value="#{row.firstName}"/>
 </rich:column>
 </rich:dataTable>

The 'person' class just has the 2 properties "name" and "firstName" which are both string and both have get/set accessors.

[user080701]

Hi,

Has any updated in this issue?

I have the same problem.

[konstantin.mishin]

Doesn't use any subclasses of
ScrollableTableDataModel as the 'value' to the dataTable.