Hi,

can you share your code? I think the general approach should still work.

That works for me, providing you have all the methods from LineItemsDataModel implemented (though I've used @ManagedBean instead of the Seam annotation).

bean

@ManagedBean
@SessionScoped
public class LineItemsDataModel implements Serializable{

    private static final long serialVersionUID = 1L;
    int page = 0;
    private int total;
    private List<String> lstLineItems;
    private int itemsPerPage = 6;
   
    public int getItemsPerPage() {
        return itemsPerPage;
    }

    public void setItemsPerPage(int itemsPerPage) {
        this.itemsPerPage = itemsPerPage;
    }

    private List<String> list = new ArrayList<String>();
    private Logger log = Logger.getLogger("lists");

    public LineItemsDataModel() {
        list.add("aaa");
        list.add("aab");
        list.add("aac");
        list.add("aad");
        list.add("aae");
        list.add("aaf");
        list.add("aag");
        list.add("aah");
        list.add("bba");
        list.add("bbb");
        list.add("bbc");
        list.add("bbd");
        list.add("bbe");
        list.add("bbf");
        list.add("bbg");
        list.add("bbh");
        
        fetch();
   }

    public void fetch(){
        total = 30; //returns  total count of items
        int limit = itemsPerPage;
        int startRow = (getPage()-1)*itemsPerPage + 1;
        if(startRow>total){startRow=1;page=1;};
            List<String> l = list.subList(startRow, startRow + limit); //getList(startRow,limit);  //returns only single page list
            setLstLineItems(new PagedList<String>(l,total,itemsPerPage));
        }

    public String actionOnPageChange(DataScrollEvent event) {
        String val = event.getNewScrolVal();
        log.info(val);
        return val;
    }

    public int getPage() {
        if(page == 0) return 1;
        return page;
    }

    public void setPage(int page) {
        this.page = page;
        fetch();
    }

    public int getTotal() {
        return total;
    }
    public void setTotal(int total) {
        this.total = total;
    }

    public List<String> getLstLineItems() {
        return lstLineItems;
    }

    public void setLstLineItems(List<String> lstLineItems) {
        this.lstLineItems = lstLineItems;
    }
}

page:

<h:form id="form">
    <rich:extendedDataTable value="#{lineItemsDataModel.lstLineItems}" var="item" id="table"
        rows="#{lineItemsDataModel.itemsPerPage}">
        <rich:column>
            <f:facet name="header">
                <h:outputText value="Ref Number" />
            </f:facet>
            <h:outputText value="#{item}" />
        </rich:column>
        <rich:column>
            <f:facet name="header">
                <h:outputText value="Order Number" />
            </f:facet>
            <h:outputText value="#{item}" />
        </rich:column>
        <rich:column>
            <f:facet name="header">
                <h:outputText value="Company Name" />
            </f:facet>
            <h:outputText value="#{item}" />
        </rich:column>
        <f:facet name="footer">
            <rich:dataScroller render="table,sumScr1" execute="table"
                scrollListener="#{lineItemsDataModel.actionOnPageChange}" id="sumScr1" maxPages="5" for="table"
                page="#{lineItemsDataModel.page}">
                <f:facet name="first">
                    <h:outputText value="First" />
                </f:facet>
                <f:facet name="last">
                    <h:outputText value="Last" />
                </f:facet>
            </rich:dataScroller>
        </f:facet>
    </rich:extendedDataTable>
</h:form>