Is it possible to create findBy method for collection of ids?

Question

subj -
I have a set of ids (HashSet of Integers).
is it possible to create such findBy method which retrieves group of entity beans with ids specified in the set?

Answer 1

You could do something like:
PrimKeyBean
public PrimKey ejbSelectPrimKey(Long key) throws FinderException;
public Collection getPrimKeys(Collection keyset) {
  try{
    Vector output = new Vector();
    Iterator it = keyset.iterator();
    while(it.hasNext()){
      output.add(ejbSelectPrimKey((Long)it.Next()));
    return output;
  } catch (FinderException fe) {}
...deploymentdescriptor.ejb
<query>
<query-method>
<method-name>ejbSelectPrimKey</method-name>
</query-method>
<ejb-ql>
SELECT OBJECT(o) FROM pkTable o WHERE pkTablePK = ?1
</ejb-ql>
</query>
...client
Collection c = primKey.getPrimKeys(keyset);
...