Temperature Conversion Service

Endpoints

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Detailed Description

This Web service performs Fahrenheit to Centigrade and Centigrade to 
Fahrenheit conversions. The service current contains two 
functions:    
CtoF and FtoC. Both functions take an integer argument and return an 
integer result. CtoF takes an integer representing a Centigrade 
temperature and returns its Fahrenheit equivalent. FtoC takes an 
integer representing a Fahrenheit temperature and returns its  
Centigrade equivalent.

This simple Web service is described in the seminar Delphi 6 Web 
Services, XML, and Socket Programming, which is part of the Delphi 
Developer Days seminar series. Visit www.DelphiDeveloperDays.com for 
more information.

Usage Notes

Delphi 6 Enterprise developers wanting to use this service should 
paste the WSDL URL into the WSDL or XML Schema Location field of the 
Web Services Importer Wizard and then click the Generate button to 
create the ITempConverter interface declaration. This wizard is 
located on the WebServices page of the Object Repository. 

Once you have generated the interface, declare a variable of type 
ITempConverter and assign to it a reference to an HTTPRIO component. 
Set the URL property of the HTTPRIO to the following SOAP endpoint 
URL:
http://developerdays.com/cgi-bin/tempconverter.exe/soap/ITempConverter

Dynamically bind the HTTPRIO to the ITempConverter interface, and 
assign this to the ITempConverter variable. You can then use the 
variable to invoke CtoF and FtoC. In Delphi this looks like the 
following:

var
  TempConverter: ITempConverter;
  Temp: Integer;
begin
  TempConverter := HTTPRIO1 as ITempConverter;
  Temp := TempConverter.CtoF(100);
  ShowMessage(IntToStr(temp)); //displays 212
end;

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