[odb-users] Query problem

Boris Kolpackov boris at codesynthesis.com
Mon Oct 1 04:48:01 EDT 2012

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

"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."


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