public Connection ConnectInMemory(NativeBindings bindings, string name = null)
{
lock (_locker)
{
if (name == null)
{
name = "";
}
// check if there is already opened database for this file
if (!_namesToDatabases.TryGetValue(name, out var database))
{
// open database if there are none opened
var databaseState = bindings.DuckdbOpen(null, out var databasePtr);
database = new Database(databasePtr);
switch (databaseState)
{
case DuckdbState.DuckDBSuccess:
_namesToDatabases.Add(name, database);
break;
case DuckdbState.DuckDBError:
throw new DuckDbException($"Could not open in-memory database");
}
}
// create new connection to the database
var connectionState = bindings.DuckdbConnect(database.Pointer, out var connectionPtr);
var connection = new Connection(connectionPtr);
switch (connectionState)
{
case DuckdbState.DuckDBSuccess:
_connectionsToDatabases.Add(connection, database);
break;
case DuckdbState.DuckDBError:
throw new DuckDbException($"Could not connect to in-memory database");
}
return(connection);
}
}
public Connection Connect(NativeBindings bindings, string filename)
{
lock (_locker)
{
var file = Path.GetFullPath(filename);
// check if there is already opened database for this file
if (!_filesToDatabases.TryGetValue(file, out var database))
{
// open database if there are none opened
var databaseState = bindings.DuckdbOpen(filename, out var databasePtr);
database = new Database(databasePtr);
switch (databaseState)
{
case DuckdbState.DuckDBSuccess:
_filesToDatabases.Add(file, database);
break;
case DuckdbState.DuckDBError:
throw new DuckDbException($"Could not open database at: {filename}");
}
}
// create new connection to the database
var connectionState = bindings.DuckdbConnect(database.Pointer, out var connectionPtr);
var connection = new Connection(connectionPtr);
switch (connectionState)
{
case DuckdbState.DuckDBSuccess:
_connectionsToDatabases.Add(connection, database);
break;
case DuckdbState.DuckDBError:
throw new DuckDbException($"Could not connect to database at: {filename}");
}
return(connection);
}
}
