private void OpenConnection(FileInfo storeFile,
out IDbConnection newConnection)
{
lock (globalLock) {
newConnection = Sqlite.GetDatabaseConnection(storeFile);
try {
using (var ver = newConnection.CreateCommand()) {
ver.CommandText = "PRAGMA user_version";
var currentVersion = (uint)(long)ver.ExecuteScalar();
if (!currentVersion.Equals(SCHEMA))
{
throw new ArgumentOutOfRangeException("SCHEMA");
}
}
}
catch (Exception ex) {
_logger.NoticeFormat(
"Recreating database, schema update. ({0})",
ex.Message
);
Sqlite.ClearPool(newConnection);
newConnection.Close();
newConnection.Dispose();
newConnection = null;
for (var i = 0; i < 10; ++i)
{
try {
GC.Collect();
storeFile.Delete();
break;
}
catch (IOException) {
Thread.Sleep(100);
}
}
newConnection = Sqlite.GetDatabaseConnection(storeFile);
}
using (var pragma = connection.CreateCommand()) {
pragma.CommandText = "PRAGMA journal_size_limt = 33554432";
pragma.ExecuteNonQuery();
pragma.CommandText = "PRAGMA wal_autocheckpoint = 100";
pragma.ExecuteNonQuery();
pragma.CommandText = "PRAGMA wal_checkpoint(TRUNCATE)";
pragma.ExecuteNonQuery();
}
}
}
public void Dispose()
{
if (insert != null)
{
insert.Dispose();
}
if (select != null)
{
select.Dispose();
}
if (connection != null)
{
vacuumer.Remove(connection);
Sqlite.ClearPool(connection);
connection.Dispose();
}
}
