PreCache NetInjector Documentation Center : PreCache NetInjector Application Development

Common Cases, Publication — C++

Common Cases, Publication — C++

Notifications with predefined attributes

Notifications with discretionary attributes

Common Cases, publication code — C

Common Cases, publication code — C++

— the full code sample for the Common Cases tutorial

The sample for this tutorial presented more examples of setting attributes. While the process of publication is the same as in Basic Case, Publication — C++, we have added statements for

• Notifications with predefined attributes and for
• Notifications with discretionary attributes.

#include "PC_evn_Filter.hpp"

#include "PC_evn_Proxy.hpp"

#include <iostream>

using namespace precache::event;

using std::cerr;

using std::endl;

int

main(int argc, char* argv[])

{

      try

      {

//Create a proxy for the channel and client.

            Proxy p(40,3001);

//Create a notification.

            Notification n1(p,"Sample.Chat");

//Set the values for predefined attributes.

            n1.SetPredefinedAttr(
                  "Message","Hello world!");

            n1.SetPredefinedAttr("UserName","Jane");

            n1.SetPredefinedAttr("Age",(PC_LONG)10);

            n1.SetPredefinedAttr("Gender",'F');

//Publish the notification.

            p.Publish(n1);

//Create a second notification.

            Notification n2(p,"Sample.Chat");

//Set the values for predefined attributes.

            n2.SetPredefinedAttr("Message","Dolly Parton, I love you!");

            n2.SetPredefinedAttr("UserName","Laurel");

            n2.SetPredefinedAttr("Age",(PC_LONG)12);

            n2.SetPredefinedAttr("Gender",'f');

//Set a discretionary attribute's value.

            n2.AddDiscretionaryAttr("Interest","Country Music");

//Publish the second notification.

            p.Publish(n2);

      }

            catch (PCException &e)

            {

                  cerr<<e.Message().String()<<endl;

            }

}

In the final tutorial chapter, Common Cases, Subscription — C++, we will build the participating subscriber's application.