//initiates the QueryHandler for metadata query processing and text query processing
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
if (!msg.ResourceName.Equals("textquery"))
{
QueryHandler queryhandler = new QueryHandler();
List <List <string> > results = queryhandler.MetaQuery(msg.nlist);
Console.Write("\n {0} Recieved Message:\n", msg.TargetCommunicator);
msg.ShowMessage();
//Console.Write("\n Query processing is an exercise for students\n");
if (msg.Contents == "quit")
{
break;
}
ServiceMessage reply = ServiceMessage.MakeQueryMessage("client-echo", "query", results, "reply from query");
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
}
else
{
TextQueryHandler textqueryhandler = new TextQueryHandler();
List <List <string> > results = textqueryhandler.textQuery(msg.nlist);
if (msg.Contents == "quit")
{
break;
}
ServiceMessage reply = ServiceMessage.MakeQueryMessage("client-echo", "query", results, "reply from tquery");
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
}
}
}