Data Access Worldwide Forums - DataFlex Technology Stack Testing

Data Access Worldwide Forums - DataFlex Technology Stack Testing https://support.dataaccess.com/Forums/ A forum dedicated to discussing, testing, and shaping the future of the Technology Stack project. en Sat, 12 Sep 2026 23:22:45 GMT vBulletin 60 https://support.dataaccess.com/Forums/images/misc/rss.png Data Access Worldwide Forums - DataFlex Technology Stack Testing https://support.dataaccess.com/Forums/ <![CDATA[Thought I'd mention these...]]> https://support.dataaccess.com/Forums/showthread.php?73575-Thought-I-d-mention-these&goto=newpost Fri, 11 Sep 2026 15:33:12 GMT Given that DF27 is currently just a Technology Preview and not supposed to be anything like a finished product yet, I've just been living with these, but I just thought I'd mention some of them - I may add to this as more crop up to remind me of them.

WASM apps open a new Chrome (my default web browser) window when debug run, rather than a new tab. This may be deliberate - dunno. It causes Chrome to complain that it wasn't shut down correctly, which an annoyance.
The whole Studio sometimes dies (exits, disappears) and has to be restarted. This seems to occur when doing something like doing a Restart while debug-running, but generally follows taking some action - it doesn't just die unprovoked.
ghoApplication is zero - is there no application object, or something that passes for one?

Mike ]]> DataFlex Technology Stack Testing Mike Peat https://support.dataaccess.com/Forums/showthread.php?73575-Thought-I-d-mention-these DF Types not defined https://support.dataaccess.com/Forums/showthread.php?73567-DF-Types-not-defined&goto=newpost Thu, 10 Sep 2026 09:27:11 GMT I notice that the DF types - line DF_ASCII, DF_BCD, etc. are not defined in the WASM runtime (and presumably other TechStack runtimes). Yes I know... I notice that the DF types - line DF_ASCII, DF_BCD, etc. are not defined in the WASM runtime (and presumably other TechStack runtimes). Yes I know these are actually defined in FMAC rather than the actual runtime.

I was just wondering:

The reason for this
If I can get around this by doing my own Define DF_ASCII for CI0, etc., or if this will fail on tests using them (i.e. "If (iType = DF_BCD)..." (guess I just need to test it)

Mike ]]> DataFlex Technology Stack Testing Mike Peat https://support.dataaccess.com/Forums/showthread.php?73567-DF-Types-not-defined Minor runtime error - Excel Import Wizard https://support.dataaccess.com/Forums/showthread.php?73565-Minor-runtime-error-Excel-Import-Wizard&goto=newpost Wed, 09 Sep 2026 23:48:02 GMT When running the Excel Import Wizard in 27, I got the following runtime error. Frank Cheng ----------------------- Version check: Invalid... When running the Excel Import Wizard in 27, I got the following runtime error.

Frank Cheng

-----------------------

Version check: Invalid client version string.

Client version: 1.0.52
Server version: 1.0.47

Error: 4431

MSG_CALL_VERSIONCHECK (6846) - oBody (67) - at address 31327
MSG_PROCESSREQUEST (6837) - oBody (67) - at address 31133
MSG_ONWEBMESSAGERECEIVED (8961) - oBody (67) - at address 55276
MSG_ONWEBMESSAGERECEIVED (8961) - oMainWindow (69) - at address 52108
MSG_ONCOMWEBMESSAGERECEIVED (8775) - oMainWindow (69) - at address 51874
MSG_CREATE_DIALOG (711) - oWizard (35) - in native code
MSG_CREATE_DIALOG (711) - oWizard (35) - at address 2216
MSG_ACTIVATE (117) - oWizard (35) - in native code
MSG_ACTIVATE (117) - oWizard (35) - at address 3032
MSG_POPUP (290) - oWizard (35) - in native code
MSG_POPUP_MODAL (4346) - oWizard (35) - at address 2163
MSG_END_CONSTRUCT_OBJECT (459) - oWizard (35) - at address 56380
[start] - at address 79499 ]]> DataFlex Technology Stack Testing Frank Cheng https://support.dataaccess.com/Forums/showthread.php?73565-Minor-runtime-error-Excel-Import-Wizard Naming Conventions for the new paradigm https://support.dataaccess.com/Forums/showthread.php?73562-Naming-Conventions-for-the-new-paradigm&goto=newpost Tue, 08 Sep 2026 20:52:29 GMT Question for the DF27 architects: Are standards/naming conventions starting to suggest themselves? DF27 recycles a lot of existing Dataflex... Question for the DF27 architects:

Are standards/naming conventions starting to suggest themselves? DF27 recycles a lot of existing Dataflex terminology and applies different meanings to those use in DF26.

To use the conference example: Background/server process extracts room, presenter and presentation data from traditional windows database tables as described in rooms.dd, presenter.dd etc.

Within the android device each 'record' is described by entity-style datadictionaries RoomDataDictionary.pkg, PresenterDataDictionary.pkg, etc

As both rooms.dd and roomdatadictionary.pkg define the same data should consideration be given to having a new file extension, maybe .de? ]]> DataFlex Technology Stack Testing DaveR https://support.dataaccess.com/Forums/showthread.php?73562-Naming-Conventions-for-the-new-paradigm Attempting To Understand Direction https://support.dataaccess.com/Forums/showthread.php?73559-Attempting-To-Understand-Direction&goto=newpost Tue, 08 Sep 2026 10:01:33 GMT I've been reading through the documentation and watching the YouTube videos about TechStack,
particularly around toolchains and creating a new project, and I'm trying to get my head around the changes.

The documentation mentions allowing existing applications to evolve gradually and providing incremental migration
paths. I'm trying to picture what that evolution looks like for an existing WebApp.

Today a WebApp may have a large amount of server-side DataFlex code doing DD/SQL directly,
accessing the server filesystem, using COM components such as Chilkat for email,
generating reports using DRReports etc., all fairly naturally because the application
tself is running on the server.

With WASM I assume the picture becomes quite different because significant application code
is now executing on the client, but some functionality cannot.

For a multi-user, data-driven application, I assume the WASM client would still ultimately need to communicate
with server-side functionality and an authoritative database.
Local SQLite may provide local storage or offline capability, but it doesn't remove that server requirement.

A lot of functionality which today is simply server-side DataFlex code, directly
doing the things mentioned above, would presumably need to become functionality that a remote
client can call over HTTP or some other service/API mechanism.

So today the app is basically:
Browser → WebApp server code → DD/SQL/etc. → SQL Server

Evolved:
WASM/Android/iOS → HTTP/services → server-side processes → DD/SQL/etc. → SQL Server

If I've understood this correctly, then the evolution would seem to mean that
the existing WebApp becomes more of a web service, with the existing server-side functionality
reorganised into services that can be called by the new clients.

Is that the right way to be looking at this, or am I misunderstanding
how the different pieces of TechStack are intended to fit together?

Also, if the application later needed Android and iOS clients, I
assume they would become additional clients of those same
server-side services, while potentially having their
own local data/offline requirements.

Am I looking at this the correct way? ]]> DataFlex Technology Stack Testing Chris Spencer https://support.dataaccess.com/Forums/showthread.php?73559-Attempting-To-Understand-Direction cWebRadio not working in WASM https://support.dataaccess.com/Forums/showthread.php?73556-cWebRadio-not-working-in-WASM&goto=newpost Mon, 07 Sep 2026 16:36:42 GMT cWebRadio (via cWebRadioContainer_mixin) causes a runtime error - Invalid message 'INVALID SYMBOL' for object 'Global' on the line:

Code:

        Move (SearchArray(sGroupName, aRadioGroupNames, Desktop, RefFunc(DFSTRICMP))) to iGroup   // case insensitive search

(Many times!)

Line 38 in cWebRadioContainer_mixin.pkg.

Mike ]]> DataFlex Technology Stack Testing Mike Peat https://support.dataaccess.com/Forums/showthread.php?73556-cWebRadio-not-working-in-WASM <![CDATA[error 4402 DAta & Time Stamp not set in file]]> https://support.dataaccess.com/Forums/showthread.php?73555-error-4402-DAta-amp-Time-Stamp-not-set-in-file&goto=newpost Fri, 04 Sep 2026 22:01:52 GMT oops Date & time stamp

C:\Program Files\DataFlex 27.0\Bin64\Studio.exe
Assertion: Date & time stamp not set in file: C:\DEV\Libraries\2027Conference\Conference_Data\Df Pkg\DataFlex_dev_Web_API_Framework-1.0.0\AppSrc\WebApi\cWebApi.pkg

the folder WebApi isn't present as far as I can see so maybe the sample is out of step

Error: 4402

Please report this error to Data Access Corporation

MSG_CHECKDATETIMESTAMP (16914) - oFileManager (4069) - at address 183792
MSG_UPDATEFILES (15632) - oFileManager (4069) - at address 184715
MSG_ONACTIVATEAPP (4687) - oMain (919) - at address 190814
MSG_NOTIFY_APPLICATION_ACTIVATION (787) - oMain (919) - at address 96047
MSG_NOTIFY_APPLICATION_ACTIVATION (787) - oMain (919) - at address 190774
[start] - at address 293251

Having a poke around in the ConferenceData Rest stuff at the so-far-undocumented classes. I was trying to rightclick open cRestDataSet.pkg

couldn't continue, had to three-finger the studio

Also: frequent error in output window: Class Prefrence Definition Error: Could not find class cDbLocalWebControlHost in file cDbLocalWebControlHost.pkg ]]> DataFlex Technology Stack Testing DaveR https://support.dataaccess.com/Forums/showthread.php?73555-error-4402-DAta-amp-Time-Stamp-not-set-in-file Dataflex Complex Types https://support.dataaccess.com/Forums/showthread.php?73554-Dataflex-Complex-Types&goto=newpost Fri, 04 Sep 2026 19:45:20 GMT Hi, i have some questions about Complex Types.
Will Entities support database-specific data types, such as DB2's DECFLOAT, XML, CLOB/BLOB, and Spatial types?
Will there be a standard mechanism for converting database-specific types into native DataFlex types, and vice versa?

I work with DB2 Spatial Types and we were spending a lot of time doing queries to convert Spatial Types to WKT, for instance.
If there were a way to convert my Spatial Type on this Entity.

I'm not a specialist on DB2 and maybe i'm doing this wrong.:p ]]> DataFlex Technology Stack Testing daniellayon https://support.dataaccess.com/Forums/showthread.php?73554-Dataflex-Complex-Types Stream Sep-3rd Question: How to Switch ConnectionIDs, or DataBase connections at runtime ? https://support.dataaccess.com/Forums/showthread.php?73553-Stream-Sep-3rd-Question-How-to-Switch-ConnectionIDs-or-DataBase-connections-at-runtime&goto=newpost Fri, 04 Sep 2026 15:15:31 GMT Watched the yesterday's stream just now.

Have a question about how can we switch Database connections at runtime related to the Entity , if the Connection is set as a metatag, and not by a real df code !?

Code:

{Connection=MAIN}

Entity TodoList

   ... members ... 

End_Entity

Today, for a given file-list entry, we can change the SERVER_NAME attribute at runtime to point to whatever we want, before "opening" the table..
We can easily change the ConnectionID if we want.. by using Set_Attribute interface.

Code:

from: 

SERVER_NAME DFCONNID=Main1 



to: 

SERVER_NAME DFCONNID=Sub2

---
I feels this won't be possible anymore with the connectionID being set as a metatag at the entity definition.

Would love to be wrong.. please enlighten me if this is the case. !

Regards ]]> DataFlex Technology Stack Testing Samuel Pizarro https://support.dataaccess.com/Forums/showthread.php?73553-Stream-Sep-3rd-Question-How-to-Switch-ConnectionIDs-or-DataBase-connections-at-runtime WebApp and FlexTron https://support.dataaccess.com/Forums/showthread.php?73552-WebApp-and-FlexTron&goto=newpost Fri, 04 Sep 2026 11:12:57 GMT The problem (solved in the 26.0.89.122 release) mentioned in this thread... The problem (solved in the 26.0.89.122 release) mentioned in this thread is still present in 27.0.97.107.

But I guess that will crop up a fair bit if you are fixing-up 26 while working on 27. :(

Mike ]]> DataFlex Technology Stack Testing Mike Peat https://support.dataaccess.com/Forums/showthread.php?73552-WebApp-and-FlexTron new suffixes for new formats https://support.dataaccess.com/Forums/showthread.php?73548-new-suffixes-for-new-formats&goto=newpost Thu, 03 Sep 2026 15:00:27 GMT I made this point with sws files moving from 25 to 26, where I suggested that JSON-style sws files should possibly have a modified suffix (swj?) so... I made this point with sws files moving from 25 to 26, where I suggested that JSON-style sws files should possibly have a modified suffix (swj?) so that merging folders of 25 and 26 projects wouldn't screw each other up.

I'm inclined to say the same should be true for these new data dictionaries which are going to coexist with older ones. And as for recycling 'flx' after a thousand years of them being charactermode (shudders).. ]]> DataFlex Technology Stack Testing DaveR https://support.dataaccess.com/Forums/showthread.php?73548-new-suffixes-for-new-formats Trying to buid an existing WebApp https://support.dataaccess.com/Forums/showthread.php?73547-Trying-to-buid-an-existing-WebApp&goto=newpost Thu, 03 Sep 2026 09:30:18 GMT Hi

As the title says, I'm trying to build an existing WebApp (well, a WebView: my WebQuery tool) as:

A WebApp
A FlexTron app

In DF27 using - in this case - the Windows toolchain (which should just work, right? 'coz it is the same as in DF26, etc.).

In both I'm getting a whole slew of compilation errors, starting with:

Code:

- Error 4313: C:\Projects\DF27Test\DfPkg\DataFlexCode_WebQuery-d3a67b421dafbaee816e8ad2bd87d977004d421c\AppSrc\WebQuery.wo (ln 20) Include file not found CWEBVIEW.PKG

Now cWebView is there, in:

Code:

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI-1.1.6\AppSrc\WebUI

But that isn't on my workspace Library Paths, which are:

Code:

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_FlexTron_Windows-1.1.6\AppSrc_FlexTron

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_FlexTron_Windows-1.1.6\AppSrc_CoreWindows

C:\Projects\DF27Test\DfPkg\DataFlexCode_WebQuery-d3a67b421dafbaee816e8ad2bd87d977004d421c\AppSrc

C:\Projects\DF27Test\DfPkg\DataFlexCode_Stables26-0cbe41483c9b9b2141942ce2eb5d2cf5e9b1b171\AppSrc

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_Material_Theme-1.1.0

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_WebAppServer_Windows-1.1.6\AppSrc_ServerWindows

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_WebAppServer_Windows-1.1.6\AppSrc_Server

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_WebAppServer_Windows-1.1.6\AppSrc_CoreWindows

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI-1.1.6\AppSrc

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_FlexTron_Windows-1.1.6

C:\Projects\DF27Test\DfPkg\DataFlexCode_WebQuery-d3a67b421dafbaee816e8ad2bd87d977004d421c\Bitmaps

C:\Projects\DF27Test\DfPkg\DataFlexCode_Stables26-0cbe41483c9b9b2141942ce2eb5d2cf5e9b1b171

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_Material_Theme-1.1.0

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI_WebAppServer_Windows-1.1.6

C:\Projects\DF27Test\DfPkg\DataFlex_dev_Web_UI-1.1.6

How should I resolve this? Move "...\AppSrc\WebUI" up to '..."\AppSrc", or modify the Library Paths?

Mike ]]> DataFlex Technology Stack Testing Mike Peat https://support.dataaccess.com/Forums/showthread.php?73547-Trying-to-buid-an-existing-WebApp <![CDATA[The 'Back end' for the Conference App]]> https://support.dataaccess.com/Forums/showthread.php?73546-The-Back-end-for-the-Conference-App&goto=newpost Wed, 02 Sep 2026 15:17:06 GMT I think I have just scratched the surface on this example, enough to understand the first webinar and to look forward to tomorrow's.

It would be useful even before the 'database' webinar to understand what the backend looks like which provides the data when the app refreshes. I assume future releases of the example workspace might incorporate and use a local copy of the backend SQLLite database?

This is all amazing stuff, but with 60 or more company IOS devices and precisely 1 company android phone (the Managing Director's :cool:) serious testing will be deferred... ]]> DataFlex Technology Stack Testing DaveR https://support.dataaccess.com/Forums/showthread.php?73546-The-Back-end-for-the-Conference-App The boring stuff https://support.dataaccess.com/Forums/showthread.php?73541-The-boring-stuff&goto=newpost Mon, 31 Aug 2026 20:56:39 GMT I assume there is nothing earth-shatteringly-new in the Win64 compile under DF27 as my batch compile of 679 plain old windows src files produced... I assume there is nothing earth-shatteringly-new in the Win64 compile under DF27 as my batch compile of 679 plain old windows src files produced exactly the same number of err files and as far as I can see the same errors in each of them. Now to try some of the flextrons ... ]]> DataFlex Technology Stack Testing DaveR https://support.dataaccess.com/Forums/showthread.php?73541-The-boring-stuff Defining numeric or Decimal field DF https://support.dataaccess.com/Forums/showthread.php?73539-Defining-numeric-or-Decimal-field-DF&goto=newpost Sun, 30 Aug 2026 11:02:02 GMT I created entity and data dictionary files for en exiting app to see how an existing file and DD definition translate. I was about to test the... I created entity and data dictionary files for en exiting app to see how an existing file and DD definition translate.

I was about to test the create database functionality but was unsure how to declare SQL Numeric/Decimal fields. For example, precision: 14; scale: 2.

I assumed it is controlled by column Metadata.
eg { Type=NUMERIC, precision=14, scale=2 }

I realise the limitations of SQLLite but assume it will be similar to MSSQL.

Field_Mask_Type also seems not to be a feature yet.

I thought the documentation was excellent in its limited form, but when on a help page, pressing Ctrl+P to print pops up the search box..
You can still right click on a page and select print.

If these issues are jumping the gun just ignore them until they are incorporated. ]]> DataFlex Technology Stack Testing Russell McDougall https://support.dataaccess.com/Forums/showthread.php?73539-Defining-numeric-or-Decimal-field-DF