Returning VB collections through OLE

Question

We are creating a Forte OLE automation server which must interface
with a VB Collection.
We have successfully passed a collection from VB to Forte. Forte
receives this parameter as type CDispatch (determined using
GetClassType().Name).
We want to add items of type ValueItem to this collection.
ValueItem was generated from another VB component using olegen,
so it has a CDispatch interface.
We don't seem to be able to use the CDispatch.InvokeMethodWithResult
to execute the method Collection.Add. This is due to the fact that
ValueItem is a subclass of CDispatch and we must pass an array of
variant to InvokeMethodWithResult.
Has anybody done something similar to this?
Thank you,
Keith

Answer 1

I'm not sure why do you need a REMOTE interface for your Entity bean...
Anyway you never return a collection of entities from a finder, but coleection of primary keys (BMP).
public Collection ejbFindBySurname(String Apellido1) throws FinderException
ArrayList list = null;
try
Connection con = getConnection();
try
PreparedStatement pstmt = con.prepareStatement("select IDAbonado from Abonado where Apellido1 like ?");
try
pstmt.setString(1, Apellido1 + '%');
ResultSet rs = pstmt.executeQuery();
list = new ArrayList();
while(rs.next())
int index = rs.getInt(1);
list.add(new Integer(index));
finally { pstmt.close(); }
finally { con.close(); }
catch (Exception ex) { throw new FinderException(ex.getMessage()); }
return list;
ArrayList is Serializable
But I prefer to use a local interface to enty in pair with SlSB
public ArrayList findBySurname(String surname)
ArrayList list = null;
try
Collection c = abonadoHome.findBySurname(surname);
list = new ArrayList(c.size());
Iterator i = c.iterator();
while(i.hasNext())
list.add(((LocalAbonado)i.next()).getMyInformationMethod();
catch(Exception ex)
ex.printStackTrace(System.err);
throw new EJBException(ex);
return list;
Note, I do not use narrow, coz I do not use remote call.
Cheers