How to insert list of records using ids?

Question

I have a class as following need to add people to it, but I just have the id of people, do I need to retrieve all the objects before associating them to myList ?

class People{

 private long id;

 private String name;
 ....
}

class myList{

 private long id;

 @OneToMany
 private List<People> people;
 ...
}

class myModel{
  ....
  {
    List long selectedPeople  <<< has ids such as 8 9 7 6 45 6
    myList mylist = new MyList();
    mylist.setPeople(selectedPeople);
    session.save(mylist);
    ...
  }

if you have a List<Long> you can't set something expecting List<People> — nachokk
– nachokk, Commented Aug 21, 2013 at 0:22

nachokk · Accepted Answer · 2013-08-21 00:24:25Z

2

Why don't do this

List<People> toSave = new ArrayList<>();

for(Long id : selectedPeople){
   People people = new People();
   people.setId(id);
   toSave.add(people);
}
myList.setPeople(toSave);
session.save(myList);

Also your People class would be better as Person perhaps.

answered Aug 21, 2013 at 0:24

nachokk

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