Assigning one of a <p:selectOneMenu> item in java object - jsf-2

Question

I have a list of governorates that I displayed in a <p:selectOneMenu>
the java code in the managed bean:
public List<SelectItem> gouvernorats() {
List<Gouvernorat> all = emetteursEJB.findAllGouvernorat();
List<SelectItem> items = new ArrayList<>();
for (Gouvernorat g : all) {
items.add(new SelectItem(g, g.getLibelleGouv()));
}
return items;
}
in the <p:selectOneMenu> I add <p:ajax>:
<p:selectOneMenu value="#{emetteurBean.selectedGouvernorat}" style="width:160px" >
<f:selectItem itemLabel="Select One" itemValue="" />
<f:selectItems value="#{emetteurBean.gouvernorats()}" />
<p:ajax event="change" listener="#{emetteursBean.handelGouvChanged()"/>
</p:selectOneMenu>
in the method handelGouvChanged() selectedGouvernorat object is always null;
Recently I added the convert I stumbled upon NullPointerException
#FacesConverter(forClass = Gouvernorat.class)
public class EmetteursConverter implements Converter {
#EJB
private ReferentielDaoLocal refEJB;
#Override
public Object getAsObject(FacesContext context, UIComponent component, String selectedValue) {
System.out.println("Inside The Converter");
System.out.println(selectedValue.length());
if (selectedValue == null) {
return null;
} else {
return refEJB.findGouvByCode(selectedValue.trim());
}
}
#Override
public String getAsString(FacesContext context, UIComponent component, Object value) {
if (value == null) {
return null;
} else {
return String.valueOf(((Gouvernorat) value).getIdGouvernorat());
}
}
}

Answer 1

I found a solution, I injected EJB with InitilContext.lookup ()
#FacesConverter(forClass = Gouvernorat.class)
public class GouvernoratConverter implements Converter {
private static final Logger LOG = Logger.getLogger(GouvernoratConverter.class.getName());
#Override
public Object getAsObject(FacesContext context, UIComponent component, String selectedValue) {
if (selectedValue == null) {
return null;
} else {
try {
ReferentielDaoLocal myService = (ReferentielDaoLocal) new
InitialContext().lookup("java:global/ErpCCF/ErpCCF-ejb/ReferentielDaoImpl");
return myService.findGouvByCode(selectedValue);
} catch (NamingException ex) {
LOG.log(Level.SEVERE, "Converter Gouvernorat Error", ex.getMessage());
return null;
}
}
}
#Override
public String getAsString(FacesContext context, UIComponent component, Object value) {
if (value == null) {
return null;
} else {
return String.valueOf(((Gouvernorat) value).getIdGouvernorat());
}
}
}