selectBooleanCheckbox within dataTable is deselected across

[thiagu.m]

i need check box component within each dataTale rows.
I need to display what are all the rows to be selected at the time of show Rows command button clicked
This is my xhtml sample code

<a4j:form id="form" reRender="table-body" ajaxSubmit="true" ignoreDupResponses="true" requestDelay="500">
<a4j:region id="stat1">
<a4j:outputPanel id="table-body">
<rich:dataTable id="prodList" rows="10" value="#{productlist}" var="product">
 <f:facet name="header">
 <rich:columnGroup>
 <h:column>
 <h:outputText value="Select" />
 </h:column>
 <h:column>
 <h:outputText value="Model" />
 </h:column>
</rich:columnGroup>
 </f:facet>
 <h:column>
 <h:selectBooleanCheckbox value="#{searchSelections[product]}"/>
 </h:column>
 <h:column>
 <h:outputText value="#{product.productName}" />
 </h:column>
</rich:dataTable>
<rich:datascroller for="prodList" maxPages="10" />
<h:commandButton value="Show Rows" action="#{productsearch.showRows}"/>
</a4j:outputPanel>
</a4j:region>
</a4j:form>

This is my session bean class code

@Stateful
@Name("productsearch")
public class ProductsAction implements ProductsLocal,Serializable
{

 @PersistenceContext
 EntityManager em;

 @Out(scope=ScopeType.CONVERSATION,required=false)
 Map<TblProducts, Boolean> searchSelections;

 @Out(required=false)
 static List<TblProducts> productlist;

@Begin(join=true)
 public String init() {
productlist =em.createQuery("select t from TblProducts t").getResultList();
searchSelections=new HashMap<TblProducts, Boolean> ()
}

 public String showRows() {
for (TblProducts item: productlist)
{

 Boolean selected = searchSelections.get(item);
 if (selected!=null && selected)
 System.out.println("Selected row is :"+ item.getProductName());

}
}
}

this code is workes fine within the single page,
selectBooleanCheckbox is deselected if I try use datascroller
How to resolve this problem

by
Thiagu.m