ExtendedDataTable not remembering sort

[ryanyoder]

I hope this is a dumb question but how do you make the ExtendedDataTable remember the current sort? If I navigate off the page and then back again, the sort order is lost. I tried tableState but that didn't work.
I am left on the correct page because the rich:dataScroller uses my session backing bean to store the current page number and all my data is there since its also in session. I'm just losing the sort.

Thanks!

[ilya_shaikovsky]

so you should implement your model which will do the work. modifiable model sample at richfaces-demo http://localhost:8080/richfaces-demo/richfaces/dataTable.jsf?c=dataTable&tab=modifiableDataModel

[ilya_shaikovsky]

or even simplier - just bind sortOrder's of the columns and sortPriority to session bean property.

[ryanyoder]

Thanks for the reply. I don't use rich:columns, just multiple rich:column components under the datatable.
I'm surprised the rich:extendedDataTable doesn't have a sortColumn property which you can bind to the session bean like the tomahawk control.
Maybe if I bind the dataTable itself to the backing bean it will work but I have found that I often get duplicate ID errors if I bind a datatable.

[bm97]

Regarding this problem: I could not figure out how to use sortPriority, but i found another solution.

For a rich:dataTable in single-selection mode the sortorder can be saved by binding the sortOrder-property of each column (like ilya suggested).

A working example: Here it is done via a session-scoped backing bean, which holds a map with entries for each column. (Note: external sorting is used here and therefore not shown)

    <rich:dataTable id="#{id}resultTable"
                    value="#{tableManager.model}"
                    binding="#{tableManager.dataTable}"
                    var="dataItem"
                    sortMode="single"
                    >

      <rich:column sortBy="#{dataItem.product0}"
                   selfSorted="true"
                   sortOrder="#{resultTableSortingState.order['product0']}"
                   >
        <f:facet name="header">#{bundle['product0']}</f:facet>
        <h:outputText value="#{dataItem.product[0].name}" />
      </rich:column>

      <rich:column sortBy="#{dataItem.product1}"
                   selfSorted="true"
                   sortOrder="#{resultTableSortingState.order['product1']}"
                   >
        <f:facet name="header">#{bundle['product1']}</f:facet>
        <h:outputText value="#{dataItem.product[1].name}" />
      </rich:column>

    </rich:dataTable>

/**
 * Holds information about which column is sorted.
 */
public class SortingStateHolder {
  private final Map<String, String> order = new HashMap<String, String>() {
    {
      put("product0", "UNSORTED");
      put("product1", "UNSORTED");
    }
  };

  /**
   * @return the order
   */
  public Map<String, String> getOrder() {
    return order;
  }
}