public void SendEvent()
{
/**
* This class periodically publishes change events to the zone. This
* method starts up the thread that publishes the change events.
*
* A normal SIF Agent would, instead look for changes in the application's database
* and publish those as changes.
*/
Console.WriteLine
( "Event publishing enabled with an interval of " + EVENT_INTERVAL/1000 +
" seconds." );
Random random = new Random();
bool isProcessing = true;
// Go into a loop and send events
while ( isProcessing )
{
try
{
Thread.Sleep( EVENT_INTERVAL );
StudentPersonal changedObject = fData[random.Next( fData.Count )];
StudentPersonal eventObject = new StudentPersonal();
eventObject.RefId = changedObject.RefId;
// Create a change event with a random Student ID;
String newNum = "A" + random.Next( 999999 ).ToString();
eventObject.LocalId = newNum;
fZone.ReportEvent( eventObject, EventAction.Change );
}
catch ( Exception ex )
{
Console.WriteLine( "Error during event processing: " + ex );
isProcessing = false;
}
}
}
/// <summary>
/// Process a response (of a request) for an StudentPersonal SIF Object.
/// </summary>
/// <param name="sifDataObject">StudentPersonal response received.</param>
/// <param name="zone">Zone used.</param>
protected override void ProcessResponse(StudentPersonal sifDataObject, IZone zone)
{
if (log.IsDebugEnabled) log.Debug("Received a request response for StudentPersonal in Zone " + zone.ZoneId + ":\n" + sifDataObject.ToXml());
}
private static StudentPersonal CreateStudent(
String id,
String lastName,
String firstName,
String street,
String city,
String state,
CountryCode country,
String post,
String phone,
Sex gender,
YearLevelCode grade,
String birthDateyyyyMMdd )
{
StudentPersonal student = new StudentPersonal();
;
student.RefId = Adk.MakeGuid();
student.LocalId = id;
PersonInfo stupersonal = new PersonInfo();
student.PersonInfo = stupersonal;
// Set the Name
Name name = new Name( NameType.LEGAL );
name.FamilyName = lastName;
name.GivenName = firstName;
stupersonal.Name = name;
Address addr = new Address();
addr.SetType( AddressType.C0765_PHYSICAL_LOCATION );
addr.SetStreet( street );
addr.City = city;
addr.StateProvince = state;
addr.PostalCode = post;
addr.Country = country.ToString();
stupersonal.AddressList = new AddressList( addr );
stupersonal.PhoneNumberList =
new PhoneNumberList( new PhoneNumber( PhoneNumberType.PRIMARY, phone ) );
Demographics dem = new Demographics();
dem.SetSex( gender );
dem.BirthDate =
DateTime.ParseExact
( birthDateyyyyMMdd, "yyyyMMdd", CultureInfo.InvariantCulture.DateTimeFormat );
stupersonal.Demographics = dem;
return student;
}
/// <summary> Respond to SIF Requests
/// </summary>
public virtual void OnRequest( IDataObjectOutputStream outStream,
Query query,
IZone zone,
IMessageInfo inf )
{
SifMessageInfo info = (SifMessageInfo) inf;
SifWriter debug = new SifWriter( Console.Out );
Console.WriteLine
( "Received a request for " + query.ObjectTag + " from agent \"" + info.SourceId +
"\" in zone " + zone.ZoneId );
// Tell the ADK to automatically filter out any objects that don't meet the requirements
// of the query conditions
outStream.Filter = query;
// Read all learners from the database to populate a HashMap of
// field/value pairs. The field names can be whatever we choose as long
// as they match the field names used in the <mappings> section of the
// agent.cfg configuration file. Each time a record is read, convert it
// to a LearnerPersonal object using the Mappings class and stream it to
// the supplied output stream.
//
IDictionary data = new Hashtable();
IDbCommand command = null;
Console.WriteLine( "The SIF Request was requested in the following SIF Versions" );
foreach ( SifVersion version in info.SIFRequestVersions )
{
Console.WriteLine( " - " + version );
}
Console.WriteLine( "This agent will respond in its latest supported version, which is: " );
Console.WriteLine( " - " + info.LatestSIFRequestVersion );
// Get the root Mappings object from the configuration file
Mappings m =
fCfg.Mappings.GetMappings( "Default" ).Select
( info.SourceId, zone.ZoneId, info.LatestSIFRequestVersion );
// Ask the root Mappings instance to select a Mappings from its
// hierarchy. For example, you might have customized the agent.cfg
// file with mappings specific to zones, versions of SIF, or
// requesting agents. The Mappings.selectOutbound() method will select
// the most appropriate instance from the hierarchy given the
// three parameters passed to it.
MappingsContext mappings = m.SelectOutbound( StudentDTD.STUDENTPERSONAL, info );
try
{
int count = 0;
// Query the database for all students
command = fConn.CreateCommand();
fConn.Open();
command.CommandText = "SELECT * FROM Students";
using ( IDataReader rs = command.ExecuteReader( CommandBehavior.CloseConnection ) )
{
DataReaderAdaptor dra = new DataReaderAdaptor( rs );
while ( rs.Read() )
{
count++;
// Finally, create a new LearnerPersonal object and ask the
// Mappings to populate it with SIF elements from the HashMap
// of field/value pairs. As long as there is an <object>/<field>
// definition for each entry in the HashMap, the ADK will take
// care of producing the appropriate SIF element/attribute in
// the LearnerPersonal object.
//
StudentPersonal sp = new StudentPersonal();
sp.RefId = Adk.MakeGuid();
mappings.Map( sp, dra );
// Now write out the LearnerPersonal to the output stream and
// we're done publishing this student.
//
Console.WriteLine( "\nThe agent has read these values from the database:" );
DumpDictionaryToConsole( data );
Console.WriteLine( "To produce this LearnerPersonal object:" );
debug.Write( sp );
debug.Flush();
outStream.Write( sp );
data.Clear();
}
rs.Close();
}
Console.WriteLine
( "- Returned " + count + " records from the Student database in response" );
}
catch ( Exception ex )
{
Console.WriteLine( "- Returning a SIF_Error response: " + ex.ToString() );
throw new SifException
( SifErrorCategoryCode.RequestResponse, SifErrorCodes.REQRSP_GENERIC_ERROR_1,
"An error occurred while querying the database for students", ex.ToString(), zone );
}
finally
{
if ( command != null )
{
try
{
fConn.Close();
}
catch ( Exception ignored )
{
}
}
}
}
