Map<Integer, Boolean> for selectBooleanCeckbox

[pepelara]

I  have a xhtml file and a managed bean where I have defined Map<Integer, Boolean>

to use it in the view layer to support a selectBooleanCeckbox nested inside a dataTable.

This Map is common for all the displayed Cliente and what I really need is a

Map<Cliente, Map<Integer, Boolean>> where every Cliente has its corresponding

Map<Integer, Boolean>.

The actual problem is the Map throws a NullPointerException when I move to another page

in the dataTable.

I do not know the way to iterate a Map<Cliente, Map<Integer, Boolean>> in the view layer.

Here is the xhtml file with the simple Map,

<c:forEach items="#{adminCarritoBean.clientes}" var="map">
   <c:set value="#{0}" var="cont"/>
   <c:forEach items="#{map.keySet}" var="cliente">
      <rich:dataTable value="#{map.get(cliente)}" var="carrito"            iterationStatusVar="it" rows="5">
         <h:column>
            <f:facet name="header">
               <h:outputText value="Select" />
           </f:facet>
           <h:selectBooleanCheckbox value="#{adminCarritoBean.selectedIds[carrito.id]}" />
         </h:column>
         ------------------
         -----------------
         <f:facet name="footer">
            <rich:dataScroller page="#{adminCarritoBean.page[cont]}" />
         </f:facet>
      </rich:dataTable>
      <c:set value="#{cont + 1}" var="cont"/>
   </c:forEach>
</c:forEach>

and here is the bean code,

private Map<Integer, Boolean> selectedIds;
private List<Carrito> selectedDataList;    
private List<Map<Cliente, List<Carrito>>> clientes;

public void eliminar() {
        selectedDataList = new ArrayList<Carrito>();
        
        for (Map<Cliente, List<Carrito>> cliente: clientes) {
            Set<Cliente> keys = cliente.keySet();
            for(Iterator<Cliente> it = keys.iterator(); it.hasNext();) {
                Cliente clte = it.next();
                List<Carrito> carritos  = cliente.get(clte);
                for(Carrito dataItem: carritos) {
                    if(selectedIds.get(dataItem.getId()).booleanValue()) {
                        selectedDataList.add(dataItem);
                        selectedIds.remove(dataItem.getId()); // Reset.
                    }
                }
            }
        }
        
        for(Carrito crto: selectedDataList) {
            carritoDAO.eliminar(crto);
        }
        
        selectedIds = new HashMap<Integer, Boolean>();
        loadListClientes();
}

The line selectedIds.get(dataItem.getId()).booleanValue() throws that exception.

How can I do it?

Any idea?

Best regards,

Jose

[pepelara]

Here is my code,

private Map<Cliente, Map<Long, Boolean>> selectedIds;
private List<Carrito> selectedDataList;

public void eliminar() {
        selectedDataList = new ArrayList<Carrito>();
        
        Set<Cliente> clientesKeys = clientes.keySet();
        for(Iterator<Cliente> it = clientesKeys.iterator(); it.hasNext();) {
            Cliente clte = it.next();
            Map<Long, Boolean> map = selectedIds.get(clte);
            List<Carrito> carritos  = clientes.get(clte);
            for(Carrito carrito: carritos) {
                Boolean itemChecked = map.get(carrito.getId());
                if((itemChecked != null) && itemChecked.booleanValue()) {
                    selectedDataList.add(carrito);
                    map.remove(carrito.getId()); // Reset.
                }
            }
        }
        
        if(selectedDataList.size() > 0) {
            for(Carrito crto: selectedDataList) {
                carritoDAO.eliminar(crto);
            }
        }
        
        selectedIds = new HashMap<Cliente, Map<Long, Boolean>>();
        loadListClientes();
}

I have added the line Boolean itemChecked = map.get(carrito.getId()) that let me check a null pointer case

and changed the code to add the Map<Cliente, Map<Long, Boolean>> as selectedIds that was what I wanted.

Here is the view,

<ui:repeat value="#{adminCarritoBean.clientes.entrySet().toArray()}" var="cliente"
     varStatus="current" id="repeat">     
     <c:set value="#{adminCarritoBean.selectedIds.get(cliente.key)}" var="mapIds"/>
     <c:set value="#{0}" var="cont"/>
     <rich:dataTable value="#{cliente.value}" var="crto"
             iterationStatusVar="it" rows="5">            
             <rich:column>
                      <f:facet name="header">Referencia</f:facet>
                      <h:outputText value="#{crto.referencia}" />
             </rich:column>
             ---------------------
             ---------------------
             <rich:column>
                     <f:facet name="header">Select</f:facet>
                     <h:selectBooleanCheckbox value="#{mapIds[crto.id]}" />
             </rich:column>
             <f:facet name="footer">
                     <rich:dataScroller page="#{adminCarritoBean.page[cont]}" />
             </f:facet>
     </rich:dataTable>
     <c:set value="#{cont + 1}" var="cont"/>
</ui:repeat>

This works but exists an issue with the pagination of the table that even working it throws an exception,

ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/richfaces-electrodomesticos]]

(http-localhost-127.0.0.1-8081-6) facturasPendientesForm:repeat:0:j_idt74:j_idt102: Error while proccessing

the requested information: java.lang.ClassCastException

Any suggestion should be really appreciated.

Regards,

Jose

[pepelara]

Is it possible that exists a bug in rich:dataScroller when you use

more than one rich:dataTable in the same jsf page?

I was trying to deploy two tables in one jsf page with a parameterized

page attribute in the dataScroller and I was getting ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/richfaces-electrodomesticos]]

(http-localhost-127.0.0.1-8081-6) facturasPendientesForm:repeat:0:j_idt74:j_idt102: Error while processing

the requested information: java.lang.ClassCastException.

At the same time the pagination of the tables did not work in some cases.

Excuse me if I am wrong.

Jose

El mensaje fue editado por: Jose Alvarez de Lara