Comments on: C++ Event Logging with SQLite and ODB https://codesynthesis.com/~boris/blog//2012/08/07/cxx-event-logging-sqlite-odb/ Boris Kolpackov's blog about software Sat, 28 Oct 2023 17:44:42 +0000 http://wordpress.org/?v=2.2.2 By: Boris Kolpackov https://codesynthesis.com/~boris/blog//2012/08/07/cxx-event-logging-sqlite-odb/#comment-2268 Boris Kolpackov Thu, 09 Aug 2012 18:11:10 +0000 https://codesynthesis.com/~boris/blog//2012/08/07/cxx-event-logging-sqlite-odb/#comment-2268 Dave, Yes, ODB wraps the SQLite transaction into the <code>odb::transaction</code> RAII class. While in the article I use the one transaction per log entry approach (see the body of the <code>log()</code> function), it is also easy to batch multiple log entries into a single transaction: <pre><br /> transaction t (db.begin ());<br />  <br /> log (db, event (buy,  "INTC", 100, 25.10));<br /> log (db, event (buy,  "AMD",  200, 4.05));<br /> log (db, event (buy,  "ARM",  200, 26.25));<br />  <br /> t.commit ();<br /> </pre> Dave,

Yes, ODB wraps the SQLite transaction into the odb::transaction RAII class. While in the article I use the one transaction per log entry approach (see the body of the log() function), it is also easy to batch multiple log entries into a single transaction:

transaction t (db.begin ());
 
log (db, event (buy,  "INTC", 100, 25.10));
log (db, event (buy,  "AMD",  200, 4.05));
log (db, event (buy,  "ARM",  200, 26.25));
 
t.commit ();
]]> By: Dave Johansen https://codesynthesis.com/~boris/blog//2012/08/07/cxx-event-logging-sqlite-odb/#comment-2267 Dave Johansen Thu, 09 Aug 2012 17:14:05 +0000 https://codesynthesis.com/~boris/blog//2012/08/07/cxx-event-logging-sqlite-odb/#comment-2267 Does the ODB take care of transaction handling for you? Because if you're writing to disk then to my knowledge sqlite can only do a limited number of transactions per second ( http://www.sqlite.org/faq.html#q19 ). Does the ODB take care of transaction handling for you? Because if you’re writing to disk then to my knowledge sqlite can only do a limited number of transactions per second ( http://www.sqlite.org/faq.html#q19 ).

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