public IndexServices() { database = new Database(Settings.ProtocolConfiguration.ChainFolderName); OwnerIndex = new IndexOwner(database); TokenIndex = new IndexToken(database); string nativeTokenSymbol = null; if (TokenIndex.GetNative() != null) { nativeTokenSymbol = TokenIndex.GetNative().Symbol; } BalanceIndex = new IndexBalance(database, nativeTokenSymbol); OrderIndex = new IndexOrder(database); }