.NET-USoft data provider
USoft provides a .NET-USoft data provider that is able, on behalf of .NET components defined in USoft Definer, to reconnect back to the Rules Engine and retrieve data for use in the component.
This provider is called "REDataProvider" and is delivered in assembly file "REDataProvider.dll". "REDataProvider" has the following classes:
To connect back to the Rules Engine you need to derive your class from a predefined RulesEngine class. In order to acquire a connection to the Rules Engine you need to call the predefined getConnection() function. This function returns a USoftConnection object. Using this object, you can work with the connection object in the standard ADO.Net manner.
public static string sql = "SELECT p.email_address FROM person p, participant pt WHERE p.person_id = pt.person_id and pt.res_id = ?";
class DBExample : RulesEngine
public void InformParticipans(int reservation_id, string message)
USoftConnection conn = getConnection();
USoftCommand cmd = (USoftCommand)conn.CreateCommand();
cmd.CommandText = RulesEngineSQL.sql;
USoftParameter p = new USoftParameter("reservation_id", DbType.Int32);
p.Value = reservation_id;
IDataReader reader = cmd.ExecuteReader();
String email = reader.GetString(0) ;
//send an email to participant
For more information on .NET data sources, refer to http://msdn.microsoft.com.
NOTE: To take advantage of planned future developments related to cross referencing of SQL within C# code, declare all your SQL statements as static attributes in the RulesEngineSQL class.