progressListener.onBegin(this, totRecords, false);
database.declareIntent(new OIntentMassiveInsert());
try {
// BROWSE ALL THE RECORDS OF THE SOURCE CLASS
for (ODocument doc : db.browseClass(sourceClass.getName())) {
value = doc.field(sourceField);
if (value != null) {
if (value instanceof ODocument || value instanceof ORID) {
// ALREADY CONVERTED