message_iteration.cc

This example shows how to iterate through a message. The same iteration model used in this example can be also be applied to filter and predicate objects.

#include <iostream>
#include <siena/types.h>

using namespace std;
using namespace siena;

class smart_message: public message {
    // this class implements the message interface
    // ...
}

int main(int argc, char * argv[]) {
    smart_message m;
    // ...
    // here we do something with m
    //
    // and here we print out the message
    //
    message::iterator * i = m.first();
    if (i != NULL) {
        do {
            cout << "attribute: " << i->name();
            switch (i->type()) {
            case string_id: cout << "string = " << i->string_value(); break;
            case int_id: cout << "int = " << i->int_value(); break;
            case bool_id: cout << "bool = " << i->bool_value(); break;
            case double_id: cout << "double = " << i->double_value(); break;
            }
            cout << endl;
        } while (i->next());
        delete(i);
    } else {
        cout << "empty message!" << endl;
    }
}