public method IO2GTableListener.onAdded

Brief

Processes a notification about the row addition to a table.

Declaration
C++
virtual void  onAdded (const char * rowID, IO2GRow * rowData) = 0

Parameters
rowID

The identifier of the row. The parameter has the value of the row identifier for a specific trading table. For example, for the Accounts table, it has the value of the AccountID field. The complete list of the identifiers is shown below.
rowData

The object representing a row of a table. In order to process the parameter, you need to know what table it belongs to. It can be accomplished by calling the IO2GRow.getTableType method. After that, you must cast the parameter to an appropriate class. For example, for a row of the Accounts table, use the IO2GAccountTableRow class. The complete list of the classes is shown below.

Details

Table name

rowID

Cast rowData to

Casting syntax

Accounts

AccountID

IO2GAccountTableRow

IO2GAccountTableRow *row = (IO2GAccountTableRow *)(rowData);

Offers

OfferID

IO2GOfferTableRow

IO2GOfferTableRow *row = (IO2GOfferTableRow *)(rowData);

Trades

TradeID

IO2GTradeTableRow

IO2GTradeTableRow *row = (IO2GTradeTableRow *)(rowData);

ClosedTrades

TradeID

IO2GClosedTradeTableRow

IO2GClosedTradeTableRow *row = (IO2GClosedTradeTableRow *)(rowData);

Orders

OrderID

IO2GOrderTableRow

IO2GOrderTableRow *row = (IO2GOrderTableRow *)(rowData);

Messages

MsgID

IO2GMessageTableRow

IO2GMessageTableRow *row = (IO2GMessageTableRow *)(rowData);

Summary

OfferID

O2GSummaryTableRow

IO2GSummaryTableRow *row = (IO2GSummaryTableRow *)(rowData);

To get notifications about row additions to a specific table, an instance of the class implementing the IO2GTableListener interface must be subscribed to the Insert operation of this table. It is accompished by calling theIO2GTable.subscribeUpdate method with the O2GTableUpdateType.Insert parameter. For example, if you want to get notifications about the inserts into the Trades table, write the following line:

tradesTable->subscribeUpdate(Insert, tableListener);

For the implementation details, please see the example below:

Process notification about inserts into the Trades table [hide]

    // Create session which uses table manager
    mSession = CO2GTransport::createSession();
    mSession->useTableManager(Yes, NULL);
 
    //...
    // After the login, get instances of the table manager and Trades table
    IO2GTableManager *tableManager = mSession->getTableManager();
    IO2GTradesTable *tradesTable = (IO2GTradesTable)tableManager->getTable(Trades);
 
    // ...
    // Subscribe listener, listen to inserts into the Trades table, unsubscribe listener
    TableListener *tableListener = new TableListener();
    tradesTable->subscribeUpdate(Insert, tableListener);
    uni::Sleep(1000);
    offersTable->unsubscribeUpdate(Insert, tableListener);
 
    // Implementation of IO2GTableListener interface public method onAdded
    void TableListener::onAdded(const char *rowID, IO2GRow *rowData)
~    {
        IO2GTradeTableRow *trade = (IO2GTradeTableRow *)(rowData);
        std::cout << "Trade information added " << rowID << std::endl;
        std::cout << "TradeID: " << trade.getTradeID() <<
                     " Close = " << trade.getClose() << std::endl;
    }

Declared in IO2GTableListener

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