How to use LazyDataModel List in a selectOneMenu - primefaces

Question

I want to use a LazyDataModel List inside a SelectOneMenu, but the selectoneMenu doesn't show anything . this is my code
public void show() {
beneficiaries = new LazyDataModel<Fournisseur>() {
private static final long serialVersionUID = 1L;
private List<Fournisseur> list;
#Override
public List<Fournisseur> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String,Object> filters){
list = service.getAll((String)filters.get("benef.intitule"),first, pageSize);
this.setRowCount(service.count((String)filters.get("benef.intitule")));
return list;
}
#Override
public Object getRowKey(Fournisseur obj) {
return obj.getCpt();
}
#Override
public Fournisseur getRowData(String rowKey) {
Fournisseur o=null;
if(rowKey != null) {
for (Fournisseur obj : list) {
if(rowKey == obj.getCpt()) {
o = obj;
}
}
return o;
}else {
return null;
}
}
};
}
this is my html code
<p:selectOneMenu id="beneficiary" value="#
{documentController.doc.beneficiary}" converter="#
{beneficiaryConverter}" panelStyle="width:160px" required="true" >
<f:selectItem itemLabel="Selectionner" itemValue="" />
<f:selectItems value="#{beneficiaryController.beneficiaries}"
var="beneficiary" itemLabel="#{beneficiary.intitule}" itemValue="#
{beneficiary}" />
</p:selectOneMenu>
i've tested the list out side the selectOneMenu and it's work fine.

Answer 1

You are using PrimeFaces and want to allow the user to select one out of very many options. As Melloware mentioned, LazyDataModel is ment for use with DataTable or other components that support pagination this way ( e.g. DataGrid)
For your use case p:autoComplete seemes to be the best way to go.
dropdown="true" makes it look like a selectOneMenu, and you can limit the number of items show using maxResults="5".
<p:autoComplete dropdown="true" maxResults="5" value="#{autoCompleteView.txt6}"
completeMethod="#{autoCompleteView.completeText}" />
You'll need to write a custom autoComplete method that finds matches for given user search input:
public List<String> completeText(String query) {
List<String> results = new ArrayList<String>();
// fill the result matching the query from user input
return results;
}