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Blog

Advantage returning wrong value on Null in Delphi Tokyo

I was reported that the Advantage Delphi client doesn’t return NULL on MONEY data type in Delphi Tokyo. After some research, I’ve found a bug in adsdata.pas: Line 5996 compares the data buffer with the value that represents NULL in

joachimduerr 1. November 20171. November 2017 Blog 14 Kommentare Weiterlesen

ADS Intensiv Workshop

Am 4. Mai 2017 veranstalte ich einen ADS Intensiv Workshop. Es sind nur noch wenige Plätze frei. Wer Interesse daran hat, bitte bis spätestens 1. April 2017 anmelden, da ich die endgültige Teilnehmerzahl dem Hotel melden muss. Details zum Workshop

joachimduerr 18. März 201718. März 2017 Allgemein, Blog, Conferences Keine Kommentare Weiterlesen

ADS and Delphi 10.2 Tokyo

The next version of Delphi will be released soon – and there’s again the question if SAP will support ADS for the upcoming version. Personally I wouldn’t bet on it. But it’s quite easy to get the packages compiled by

joachimduerr 18. März 201718. März 2017 Blog 12 Kommentare Weiterlesen

How to get rid of the ADS SQL Editor in Delphi

A user reported via a forum that he has some issues with the built in SQL editor of the TAdsQuery component. In most cases the complete IDE just freezes. The easiest solution is to get rid of that editor. Launch

joachimduerr 4. März 20174. März 2017 Allgemein, Blog Keine Kommentare Weiterlesen

Dynamically loading Functions in Delphi

While working on the Advantage Client Library (ace.pas) to make it compatible with the latest Delphi version I found out that following does not work for Linux: „delayed“ is an unknwon keyword for the Linux compiler and even when commenting

joachimduerr 3. Februar 20173. Februar 2017 Blog Ein Kommentar Weiterlesen

Quick-Tipp: Load Images from file into ImageList

I was in need to load the images for a TImageList (in this example TPngImageList) from the file system at runtime. To prevent reinventing the stupid work every time I just created a class helper. Here’s the code: Usage:

joachimduerr 20. Januar 201720. Januar 2017 Blog Keine Kommentare Weiterlesen

Enhance TAdsQuery to include Query Callback

In the recently published blog article (Query Progress Callback) I’ve showed how to implement a query callback. For that example I’ve passed a pointer of the form into the callback function, requiring a unique callback function for every Formclass to

joachimduerr 17. Oktober 201617. Oktober 2016 Allgemein, Blog Keine Kommentare Weiterlesen

Query Progress Callback with Delphi

Today I want to focus on a topic that I was asked for many times: How can we get the progress of a running query and how can we even cancel it? Advantage Data Architect does it, so it should

joachimduerr 3. Oktober 2016 Blog Weiterlesen

Delphi Starter – and ADS?

For a couple of days Delphi starter was available for free from the Embarcadero Store at https://www.embarcadero.com/app-development-tools-store/delphi. A lot of developers from the Community asked me if the Advantage Database Server Components can be used with Delphi starter. In the

joachimduerr 12. September 201612. September 2016 Blog Keine Kommentare Weiterlesen

Delete Duplicated Records without having a Primary Key

During teaching a SQL class I was asked how to delete duplicated records from a table without having a primary key. Since they used Advantage Database Server, the answer was simple: Use the virtual column ‚ROWID‘ as primary key. For

joachimduerr 23. August 201623. August 2016 Blog Keine Kommentare Weiterlesen
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