Multiple selection with ExtendedDataTable and EntityQuery

[rlopez.rlopez.cnc.una.py]

Hi.

I'm trying to use extendedDataTable instead of dataTable on an application generated by seam-gen. I followed the example in RichFaces Live Demo, but I can´t make the multiple selection work.

This is what I´m trying to do:

public interface BaseEntity {
     public Object getKey();
}

public class ExtendedEntityQuery<T extends BaseEntity> extends EntityQuery<T> {
     
     private static final long serialVersionUID = 1L;
     
     private String sortMode = "multi";
     private String selectionMode = "multi";
     private Object tableState;
     private Selection selection = new SimpleSelection();
     private ExtendedTableDataModel<T> dataModel;
     private List<T> selectedList = new ArrayList<T>();
     
     public String getSortMode() {
          return sortMode;
     }

     public void setSortMode(String sortMode) {
          this.sortMode = sortMode;
     }
     
     public String getSelectionMode() {
          return selectionMode;
     }

     public void setSelectionMode(String selectionMode) {
          this.selectionMode = selectionMode;
     }

     public ExtendedEntityQuery() {
     }
     
     public void takeSelection(){
          selectedList.clear();
          Iterator<Object> iterator = getSelection().getKeys();
          while (iterator.hasNext()) {
               Object key = iterator.next();
               selectedList.add(getDataModel().getObjectByKey(key));
          }
     }
     
     public ExtendedTableDataModel<T> getDataModel() {
          if (dataModel == null) {
               dataModel = new ExtendedTableDataModel<T>(new DataProvider<T>(){

                    private static final long serialVersionUID = 1L;

                    public T getItemByKey(Object key) {
                         for(T c : getResultList()){
                              if (key.equals(getKey(c))){
                                   return c;
                              }
                         }
                         return null;
                    }

                    public List<T> getItemsByRange(int firstRow, int endRow) {
                         return getResultList().subList(firstRow, endRow);
                    }

                    public Object getKey(T item) {
                         return item.getKey();
                    }

                    public int getRowCount() {
                         return getResultList().size();
                    }
                    
               });
          }
          return dataModel;
     }

     public Object getTableState() {
          return tableState;
     }

     public void setTableState(Object tableState) {
          this.tableState = tableState;
     }

     public Selection getSelection() {
          return selection;
     }

     public void setSelection(Selection selection) {
          this.selection = selection;
     }

     public List<T> getSelectedList() {
          return selectedList;
     }

     public void setSelectedList(List<T> selectedList) {
          this.selectedList = selectedList;
     }
}

As you can see is just a copy-paste of the ExtendeTableBean.java (from the RF example) but using generics.

The code generated by seam is:

@Name("departamentoList")
@Scope(ScopeType.PAGE)
public class DepartamentoList extends ExtendedEntityQuery<Departamento> {

     private static final long serialVersionUID = -3548296613352342917L;

     private static final String EJBQL = "select departamento from Departamento departamento";

     private static final String[] RESTRICTIONS = {"blah, blah"};
     
     private Departamento departamento = new Departamento();

     public DepartamentoList() {
          setEjbql(EJBQL);
          setRestrictionExpressionStrings(Arrays.asList(RESTRICTIONS));
          setMaxResults(20);
          setOrderColumn("codigo");
     }

     public Departamento getDepartamento() {
          return departamento;
     }
}

I changed the scope to PAGE and extended from ExtendedEntityQuery.

My view is:

<h:form>
<rich:extendedDataTable width="786px" height="200px"
     value="#{departamentoList.dataModel}" 
     var="_departamento"
     sortMode="#{departamentoList.sortMode}"
     selectionMode="#{departamentoList.selectionMode}"
     tableState="#{departamentoList.tableState}"
     selection="#{departamentoList.selection}"
     enableContextMenu="false"
     rendered="#{not empty departamentoList.resultList}"
     noDataLabel="No existen datos">
          
     <rich:column sortable="true" width="70px"
          sortBy="#{_departamento.codigo}"
          filterBy="#{_departamento.codigo}" 
          filterEvent="onkeyup"
          label="Código">
          <f:facet name="header">Código</f:facet>
          <h:outputText value="#{_departamento.codigo}"/>
     </rich:column>
          
     <rich:column sortable="true" width="700px"
          sortBy="#{_departamento.descripcion}"
          filterBy="#{_departamento.descripcion}" 
          filterEvent="onkeyup" 
          label="Descripción">
          <f:facet name="header">Descripción</f:facet>
          <h:outputText value="#{_departamento.descripcion}"/>
     </rich:column>
          
     <a:support reRender="selectiontable"
          action="#{departamentoList.takeSelection}"
          event="onselectionchange" />
</rich:extendedDataTable>
     
<s:div styleClass="actionButtons" rendered="#{empty from}">
<s:button view="/DepartamentoEdit.xhtml"
     id="create" propagation="none" value="Nuevo Departamento">
           <f:param name="departamentoId"/>
</s:button>
</s:div>

<rich:dataTable value="#{departamentoList.selectedList}"
     var="sel" id="selectiontable">
     <rich:column>
          <h:outputText value="#{sel.codigo}" />
     </rich:column>
     <rich:column>
          <h:outputText value="#{sel.descripcion}" />
     </rich:column>
</rich:dataTable>
</h:form>

SimpleSelection.getKeys() always returns the index of the selected rows instead of the keys of the selected entities. I don´t know how to make it work, if anyone have an example of how to do this it would be very helpfull for me. 

Thanks in advance