Using the Client Proxy
Use the proxy to implement your client application. HydraExpress creates a sample implementation you may use as a framework. This section discusses how to implement the proxy for a synchronous operation. For information on the asynchronous operation, see
The Asynchronous Client API.First, we’ll look at the generated class, and then we’ll see how we can easily edit it to implement the getDayofWeek method.
The generated sample implementation below shows the DayOfWeekPortClient.cpp file created by the rwsfgen program and located in the DayOfWeekExample\app\client directory. The sample is not a class, but a source file that includes the proxy header file and a main() function that invokes the proxy’s methods.
#include "DayOfWeekExample/DayOfWeekBindingProxy.h" //1
#include <iostream>
#include <include/webservice/DefaultLogger.h>
#include <include/webservice/HandlerManager.h>
#include <include/webservice/MessageHandler.h>
#include <include/webservice/transport/TransportManager.h>
void invoke_DayOfWeek(DayOfWeekBindingProxy& proxy) //2
{
std::string date_in;
std::string dayOfWeek_ret;
rwsf::CallInfo callInfo;
try {
dayOfWeek_ret = proxy.getDayOfWeek(callInfo, date_in);
} catch(const rwsf::SoapFaultException& e) {
std::cout << "Fault Code: " << e.getFault().getFaultcode().asString()
<< std::endl;
std::cout << "Fault String: " << e.getFault().getFaultstring() << std::endl;
}
}
void logError(std::string error, std::string detail) {
rwsf::HandlerManager::invokeLogger(error + ": " + detail,
rwsf::CallInfo::Error);
}
using rwsf::DefaultLogger;
RWSF_DEFINE_STATIC_MESSAGE_HANDLER("RWSFClientLogger",DefaultLogger)
int main(int argc, char* argv[])
{
std::string location; //3
if (argc < 2) {
location = "http://localhost:8090/dayofweek/DayOfWeek";
}
else if (argv[1][0]=='-' && argv[1][1]=='a') {
location = "http://localhost:8013/dayofweek/DayOfWeek";
}
else if (argv[1][0]=='-' && argv[1][1]=='l') {
location = "http://localhost:8090/dayofweek/DayOfWeek";
}
else {
location = argv[1];
}
try {
// initialize config files //4
rwsf::NamingContext::loadGlobal("../conf/client-objects.xml");
rwsf::HandlerManager::loadConfiguration("../conf/client-handlers.xml" );
rwsf::TransportManager::initialize("../conf/client-transports.xml" );
DayOfWeekBindingProxy proxy =
DayOfWeekBindingProxy::make(location); //5
if(!proxy.isValid()) {
std::cerr << "Unable to create proxy. " << "\nExiting" <<
std::endl;
return 1;
}
invoke_getDayOfWeek(proxy); //6
} catch (const rwsf::Exception& x) { //7
std::cerr << "rwsf::Exception thrown: "
<< x.what() << std::endl;
return 1;
} catch(const std::exception& x) {
std::cerr << "std::exception thrown:" << std::endl
<< x.what() << std::endl;
return 1;
} catch(...) {
std::cerr << "Unknown exception thrown" << std::endl;
return 1;
}
return 0;
}
To create a working client, simply implement the invoke_getDayOfWeek method, replacing the generated code with your own.
In this case we will use the implemented client application DayOfWeekPortClient.cpp provided in the directory <installdir>\examples\webservices\DayofWeek.
The code below shows how the shipped file implements the service operation method invoke_getDayofWeek().
void invoke_getDayOfWeek(DayOfWeekBindingProxy& proxy)
{
std::string date_in;
std::cout << "Enter date: " << std::flush;
std::cin >> date_in;
rwsf::DateTime dt(date_in, rwsf::DateTime::setDate);
if (!dt.isValid()) { std::cout << "Error: Invalid date" << std::endl;
return;
}
else {
rwsf::DateTime today(rwsf::DateTime::setCurrentTime);
std::string toBe;
std::string dayOfWeek_ret;
if (date_in < today) {
toBe = " was a ";
} else if (date_in == today) {
toBe = " is a ";
} else {
toBe = " will be a ";
}
rwsf::CallInfo info;
try {
dayOfWeek_ret = proxy.getDayOfWeek(info, date_in);
std::cout << date_in << toBe << dayOfWeek_ret << std::endl;
} catch(const rwsf::SoapFaultException& e) {
std::cout << "Fault Code: " << e.getFault().getFaultcode().asString()
<< std::endl;
std::cout << "Fault String: " << e.getFault().getFaultstring()
<< std::endl;
}
}
}
...
Class
rwsf::DateTime correctly parses many common date formats. The client uses this class to simplify the process of converting input from the console into the ISO8601 format that the schema requires.
