How to set a list for addEntry with PostConstruct - jsf

Question

Until now I add the things I want to have in my list over the getter which makes no sense and end in a mess up in my database, when adding a new entry.
My model until now:
#Data
#Entity
public class Telefonbuch {
/*#PostConstruct
public void init() {
//geschaeftsstellen = new ArrayList<String>();
geschaeftsstellen.add("Dortmund");
System.out.println("TEEEEEEEEEEEST");
geschaeftsstellen.add("Essen");
geschaeftsstellen.add("Stralsund");
geschaeftsstellen.add("Stuttgart");
geschaeftsstellen.add("Zürich");
geschaeftsstellen.add("Istanbul");
geschaeftsstellen.add("Köln");
geschaeftsstellen.add("Aachen");
geschaeftsstellen.add("Berlin");
}*/
public List<String> getGeschaeftsstellen() {
geschaeftsstellen = new ArrayList<String>();
geschaeftsstellen.add("Dortmund");
System.out.println("TEEEEEEEEEEEST");
geschaeftsstellen.add("Essen");
geschaeftsstellen.add("Stralsund");
geschaeftsstellen.add("Stuttgart");
geschaeftsstellen.add("Zürich");
geschaeftsstellen.add("Istanbul");
geschaeftsstellen.add("Köln");
geschaeftsstellen.add("Aachen");
geschaeftsstellen.add("Berlin");
//ArrayList<String> a = new ArrayList<String>();
//a.add("Test");
return geschaeftsstellen;
}
public void setGeschaeftsstellen(List<String> geschaeftsstellen) {
this.geschaeftsstellen = geschaeftsstellen;
}
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#Column
private String vorname;
#Column
private String nachname;
#Column
private String telefonnummer;
#Column
private String handynummer;
#Column
private String geschaeftsstelle;
#Column
#ElementCollection
private List<String> geschaeftsstellen;
I just show the other variables to let you know what is in this. I know the #Column annotation for the List is not necessary. But it's a question for me. Should data like this be in a database or not? I will never use it again somewhere else. What is the right way to insert the data of the list for these selection buttons? When I just uncomment the PostConstruct it won't get called.
When I add #ManagedBean I get the error: DataModel must implement org.primefaces.model.SelectableDataModel when selection is enabled.
But in my .xhtml I already have selection="#{telefonbuchList.selectedEntry}" selectionMode="single" rowKey="#{telefonbuch.id}"
How do i know which import is the right one? javax.annotation or javax.faces.bean? Just with the annotation one it gets called.
Here can see where I use it. It's the tab "Neuer Eintrag" for a newEntry. The tab "Telefonbuch" is the list with a table for all entities.
Edit:
TelefonbuchListController on Request:
#Scope (value = "session")
#Component (value = "telefonbuchList")
#ELBeanName(value = "telefonbuchList")
#Join(path = "/", to = "/eintraege-liste.jsf")
public class TelefonbuchListController {
#Autowired
private TelefonbuchRepository telefonbuchRepository;
private List<Telefonbuch> eintraege;
#Deferred
#RequestAction
#IgnorePostback
public void loadData() {
eintraege = telefonbuchRepository.findAll();
}
public List<Telefonbuch> getEintraege() {
return eintraege;
}
private Telefonbuch selectedEntry;
public Telefonbuch getSelectedEntry() {
return selectedEntry;
}
public void setSelectedEntry(Telefonbuch selectedEntry) {
this.selectedEntry = selectedEntry;
}
public void deleteEntry() {
telefonbuchRepository.delete(selectedEntry);
eintraege.remove(selectedEntry);
selectedEntry = null;
}

Answer 1

I got your question that you are asking for a List getting filled with options usable with a selectOneRadio component - and why #PostConstruct does not work. #PostConstruct is ignored by JPA or other persistence frameworks - it's usable with CDI/Managed beans as far as I know.
Move it to your TelefonbuchList bean:
public class TelefonbuchListController {
#PostConstruct
public void init() {
geschaeftsstellen = new ArrayList<String>();
geschaeftsstellen.add("Dortmund");
geschaeftsstellen.add("Essen");
...
}
public List<String> getGeschaeftsstellen() {
return geschaeftsstellen;
}
}
You can use this list to fill your selectOneRadio component select items.