private void DisposeConnection()
{
try
{
lock (_disposeLock)
{
using (WriteLock.Write())
{
if (_connection != null)
{
using (_connection)
{
_connection.Close();
}
_connection = null;
}
CloseConnection();
}
}
}
catch (Exception ex)
{
Logger.LogError(ex, "Error disposing database");
}
}
protected ManagedConnection CreateConnection(bool isReadOnly = false)
{
if (_connection != null)
{
return(_connection);
}
lock (WriteLock)
{
if (!_versionLogged)
{
_versionLogged = true;
Logger.LogInformation("Sqlite version: " + SQLite3.Version);
Logger.LogInformation("Sqlite compiler options: " + string.Join(",", SQLite3.CompilerOptions.ToArray()));
}
ConnectionFlags connectionFlags;
if (isReadOnly)
{
//Logger.LogInformation("Opening read connection");
//connectionFlags = ConnectionFlags.ReadOnly;
connectionFlags = ConnectionFlags.Create;
connectionFlags |= ConnectionFlags.ReadWrite;
}
else
{
//Logger.LogInformation("Opening write connection");
connectionFlags = ConnectionFlags.Create;
connectionFlags |= ConnectionFlags.ReadWrite;
}
if (EnableSingleConnection)
{
connectionFlags |= ConnectionFlags.PrivateCache;
}
else
{
connectionFlags |= ConnectionFlags.SharedCached;
}
connectionFlags |= ConnectionFlags.NoMutex;
var db = SQLite3.Open(DbFilePath, connectionFlags, null);
try
{
if (string.IsNullOrWhiteSpace(_defaultWal))
{
_defaultWal = db.Query("PRAGMA journal_mode").SelectScalarString().First();
Logger.LogInformation("Default journal_mode for {0} is {1}", DbFilePath, _defaultWal);
}
var queries = new List <string>
{
//"PRAGMA cache size=-10000"
//"PRAGMA read_uncommitted = true",
"PRAGMA synchronous=Normal"
};
if (CacheSize.HasValue)
{
queries.Add("PRAGMA cache_size=" + CacheSize.Value.ToString(CultureInfo.InvariantCulture));
}
if (EnableTempStoreMemory)
{
queries.Add("PRAGMA temp_store = memory");
}
else
{
queries.Add("PRAGMA temp_store = file");
}
foreach (var query in queries)
{
db.Execute(query);
}
}
catch
{
using (db)
{
}
throw;
}
_connection = new ManagedConnection(db, false);
return(_connection);
}
}
