[odb-users] Query problem

[Boris Kolpackov]

Hi Davide,

[CC'ed odb-users in case someone else runs into this problem.]

Davide Anastasia <Davide.Anastasia at qualitycapital.com> writes:

>         odb::transaction t(m_db->begin());
>
>         m_quoteResult = m_db->query<QCM::ODB::Quote>(
>           buildQuery(d.m_day)));
>
>         t.commit();
>
>         // update iterators
>         m_quoteCurr = m_quoteResult.begin();
>         m_quoteEnd = m_quoteResult.end();

The query result is only valid within the transaction where it was
created. Quoting the manual (Section 4.4, "Query Result", second
paragraph):

"The result instance is only usable within the transaction it was
 created in. Trying to manipulate the result after the transaction
 has terminated leads to undefined behavior."

Boris