Connecting to Databases through X++ PART -II

Connecting to Databases through X++ PART -II


    ADO Connection:
ADO is a set of COM objects for accessing databases or data stores. In AX we have following Classes/Objects which help to implementing ADO concept.

Class Name
Description
Helps in establishing a connection to the target database.
Helps in executing a command (a Text type or a Stored procedure)
Stores the data
A collection of all fields in CCADORecordSet
A single field from the collection of fields
A class that helps in passing parameters that a command needs or demands

Here is an example:

static void dbCCADOConnection(Args _args)
{
    CCADOConnection connection = new CCADOConnection();
    CCADOCommand    ccADOCommand;
    CCADORecordSet  record;
    str connectStr = "Provider=SQLNCLI.1;Integrated Security=SSPI;"+
                     "Persist Security Info=False;Initial Catalog=AXDEVDB;Data Source= theAxapta";
    COM     recordSet;  /*This is required to call moveNext method to parse the record set. In AX 4.0 this method was there in the CCADORecordSet class but in AX 2009 this has been deleted*/
    ;
    // Executing a SQL Statement
    try
    {
        connection.open(connectStr);
        ccADOCommand = new CCADOCommand();
        ccADOCommand.commandText("Select * from CustTable where DataAreaId = ‘CEU’");
        ccADOCommand.activeConnection(connection);
        record = ccADOCommand.execute();
        recordSet = record.recordSet();
        while (!record.EOF())
        {
            info(any2str(record.fields().itemIdx(0).value()));
            recordSet.moveNext();
        }
    }
    catch
    {
        error("An Exception has occurred");
    }
    connection.close();
}

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-Harry

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