Retrieving Hibernate query result as result set instead of list

Question

Heya, I m new to hibernate. I have to say it really simplifies everything for the SQL query. However, manipulating the returned result is a headache for me at the moment.

Answer 1

You may need this if you have huge database and you can't fit List result into memory. Use scroll() instead of list():

Query query = session.createQuery(query);
query.setReadOnly(true);
setFetchSize(Integer.MIN_VALUE); //MUST use Integer.MIN_VALUE, other value=fetch all
ScrollableResults results = query.scroll(ScrollMode.FORWARD_ONLY);
// iterate over results
while (results.next()) {
    Object row = results.get();
}
results.close();