I've written a DataSnap server method that returns a TStream object to transfer a file. The client application calls the method and reads the stream to download the file. The server method is very simple :
It works fine downloading many file types (PDF, GIF, BMP, ZIP, EXE) but it doesn't work when downloading JPG files. On the client side the stream object returned from the method call is always 0 in size with JPGs. I can successfully stream JPG files locally on my PC, so it must be something to do with DataSnap. I've done some research which suggests DataSnap converts the stream to JSON behind the scenes and there could be a problem with this when it comes to JPG files - can anybody confirm this? On the client side I'm using the TDSRESTConnection to call the server method. I realise I could ZIP the JPG files before streaming, but would rather not have to do this.
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I have created this as a new server method call purely for downloading JPEGs, as I've found transferring the files using TJSONArray instead of TStream is as much as 4 times slower, so I use my original method for all other file types.
The source code download is available on my Subversion repository (along with the code of other books) at: information on how to get the code for the specific book is... in the book itself(However, the code repository location changed, so the information in the book is not valid any more.)
On September 6, 2006, The Developer Tools Group (the working name of the not yet spun off company) of Borland Software Corporation released single-language editions of Borland Developer Studio 2006, bringing back the Turbo name. The Turbo product set included Turbo Delphi for Win32, Turbo Delphi for .NET, Turbo C++, and Turbo C#. There were two variants of each edition: Explorer, a free downloadable flavor, and a Professional flavor, priced at US$899 for new users and US$399 for upgrades, which opened access to thousands of third-party components. Unlike earlier Personal editions of Delphi, Explorer editions could be used for commercial development.
Delphi 2007 (Delphi 11), the first version by CodeGear, was released on March 16, 2007. The Win32 personality was released first, before the .NET personality of Delphi 2007 based on .NET Framework 2.0 was released as part of the CodeGear RAD Studio 2007 product. For the first time, Delphi could be downloaded from the internet and activated with a license key. New features included:
On July 18, 2018, Embarcadero released Community Edition for free download. You are not allowed to earn more than $5,000. Library source code and VCL/FMX components are more limited compared to Professional.
I am discovered mORTNot Framework and I would like to start developing with it instead of Intraweb or Delphi WebServices however my challenge is where do I start from? I have run the tests as indicated in Delphi XE2 but TestSQL3.dpr and TestSQL3Register.dpr both generate the fatal errors indicated aboveWhat did I do wrong?Also can someone explain to me where do I start from once I am in Delphi? Which project do I choose to develop mORTMOt clent server?I know delphi WebService SOAP and datasnap; from these two can someone help me based on these two?
Yes, you can download a trial version with precompiled units. This Trial is fully functional by limited in time. CBuilder packages require built-in Indy and Intraweb versions provided with Rad Studio (this limitation can be overriden if you've full source code). 2ff7e9595c