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By: Bob Swart
Abstract: This article shows different ways for a SOAP server application (in Delphi 6 or Kylix 2 Enterprise) to use a SOAP Data Module to "export" datasets to a SOAP client application using a SoapConnection component. By Bob Swart.
I recently tried to create a multi-tier application using a combination of SOAP
and DataSnap. I used a SOAP Data Module on one side (the SOAP server) and a SoapConnection
component on the other side (the SOAP client).
Unfortunately, I encountered a problem using the URL property of the SoapConnection
component. It turned out to be a mistake in the on-line help of Delphi 6 (you need
to pass the interface name after /soap -- unless you're using a Web App Debugger
target), but now it works fine for me if I do it my way.
Since then, Kylix 2 was announced, and I've downloaded and installed the 60-day
trial edition of Kylix 2 Enterprise to play with SOAP and DataSnap in Delphi 6
Enterprise as well as Kylix 2 Enterprise -- in order to create cross-platform
The fruits of my experiments -- SOAP/DataSnap from Windows to Linux
and back -- have resulted in a set of papers. Well, it's basically one paper,
produced dynamically by an "old-fashioned" WebBroker application, with a
number of dynamic options that can turn it into 14 (slightly) different
papers. All describing how to build a SOAP DataSnap server (using Delphi 6
Enterprise or Kylix 2 Enterprise), for a specific Web server target,
with a specific database/table, and for a specific SOAP Client (again, using
either Delphi 6 Enterprise or Kylix 2 Enterprise).
The place to see the overview of all 14 papers and make your individual
selection is https://www.drbob42.com/soap42.htm.
Currently, I'm planning to add examples for dbExpress (using InterBase IBLocal) for both
Delphi and Kylix, increasing the number of combinations even further.
Feedback and other suggestions are welcome by e-mail,
of course. Thanks in advance!
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