/// <summary> <p>A convenience method for binding applications to an <code>ApplicationRouter</code>
/// Information about bindings is read from a file at a specified URL. Each line in the
/// file should have the following format (entries TAB delimited):</p>
///
/// <p>message_type 	 trigger_event 	 processing_id 	 version_id 	 app_class</p>
///
/// <p>Note that the first four fields can be the wildcard "*", which means any.</p>
///
/// <p>For example, if you write an Application called org.yourorganiztion.ADTProcessor
/// that processes several types of ADT messages, and another called
/// org.yourorganization.ResultProcessor that processes result messages, you might have a
/// file that looks like this: </p>
///
/// <p>ADT 	 * 	 * 	 * 	 org.yourorganization.ADTProcessor<br>
/// ORU 	 R01 	 * 	 * 	 org.yourorganization.ResultProcessor</p>
///
/// <p>Each class listed in this file must implement either Genetibase.NuGenHL7.app.Application or
/// Genetibase.NuGenHL7.protocol.ReceivingApplication, and must have a zero-argument constructor.</p>
///
/// </summary>
/// <param name="theRouter">the <code>ApplicationRouter</code> on which to make the binding
/// </param>
/// <param name="theSource">a URL pointing to the bindings file
/// </param>
public static void loadApplications(NuGenApplicationRouter theRouter, System.Uri theSource)
{
if (theSource == null)
{
throw new NuGenHL7Exception("Can't load application bindings: the given URL is null");
}
System.IO.StreamReader in_Renamed = new System.IO.StreamReader(new System.IO.StreamReader(System.Net.WebRequest.Create(theSource).GetResponse().GetResponseStream(), System.Text.Encoding.Default).BaseStream, new System.IO.StreamReader(System.Net.WebRequest.Create(theSource).GetResponse().GetResponseStream(), System.Text.Encoding.Default).CurrentEncoding);
System.String line = null;
while ((line = in_Renamed.ReadLine()) != null)
{
//parse application registration information
SupportClass.Tokenizer tok = new SupportClass.Tokenizer(line, "\t", false);
System.String type = null, event_Renamed = null, procId = null, verId = null, className = null;
if (tok.HasMoreTokens())
{
//skip blank lines
try
{
type = tok.NextToken();
event_Renamed = tok.NextToken();
procId = tok.NextToken();
verId = tok.NextToken();
className = tok.NextToken();
}
catch (System.ArgumentOutOfRangeException)
{
throw new NuGenHL7Exception("Can't register applications from " + theSource.ToString() + ". The line '" + line + "' is not of the form: message_type [tab] trigger_event " + "[tab] processing ID [tab] version ID [tab] application_class. " + "*** NOTE TWO NEW FIELDS AS OF HAPI 0.5 ****. ", NuGenHL7Exception.APPLICATION_INTERNAL_ERROR);
}
System.Type appClass = System.Type.GetType(className); //may throw ClassNotFoundException
System.Object appObject = System.Activator.CreateInstance(appClass);
NuGenReceivingApplication app = null;
if (appObject is NuGenReceivingApplication)
{
app = (NuGenReceivingApplication) appObject;
}
else if (appObject is Application)
{
app = new NuGenAppWrapper((Application) appObject);
}
else
{
throw new NuGenHL7Exception("The specified class, " + appClass.FullName + ", doesn't implement Application or ReceivingApplication.", NuGenHL7Exception.APPLICATION_INTERNAL_ERROR);
}
Genetibase.NuGenHL7.protocol.AppRoutingData rd = new NuGenAppRoutingDataImpl(type, event_Renamed, procId, verId);
theRouter.bindApplication(rd, app);
}
}
}
/// <summary> Returns the first Application that has been bound to messages of this type. </summary>
private NuGenReceivingApplication findApplication(Message theMessage)
{
Terser t = new Terser(theMessage);
AppRoutingData msgData = new NuGenAppRoutingDataImpl(t.get_Renamed("/MSH-9-1"), t.get_Renamed("/MSH-9-2"), t.get_Renamed("/MSH-11-1"), t.get_Renamed("/MSH-12"));
NuGenReceivingApplication app = findDestination(msgData);
//have to send back an application reject if no apps available to process
if (app == null)
app = new NuGenAppWrapper(new DefaultApplication());
return app;
}
