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Search: Posts Made By: RichardLight
Forum: nexusdb.public.support 5th May 2022, 12:39 AM
Replies: 18
Views: 1,393
Posted By RichardLight
Thanks, Thorsten: all working now. Richard

Thanks, Thorsten: all working now.

Richard
Forum: nexusdb.public.support 4th May 2022, 09:15 PM
Replies: 18
Views: 1,393
Posted By RichardLight
As you say in a previous reply, iterating over...

As you say in a previous reply, iterating over the keys of the index changes the state of the cursor. I proved this to myself by running two operations in the same client program: the first operation...
Forum: nexusdb.public.support 3rd May 2022, 09:08 PM
Replies: 18
Views: 1,393
Posted By RichardLight
Too easy! Thanks!!

Too easy! Thanks!!
Forum: nexusdb.public.support 3rd May 2022, 08:27 PM
Replies: 18
Views: 1,393
Posted By RichardLight
Thanks, Thorsten: that was an epic response! I've...

Thanks, Thorsten: that was an epic response! I've now got it working (thanks also to stealing some ideas from your Server Info plugin, which showed me how to create a variable-length response...
Forum: nexusdb.public.support 1st May 2022, 05:32 AM
Replies: 18
Views: 1,393
Posted By RichardLight
Thanks - yes I can get the Session now,...

Thanks - yes I can get the Session now, server-side, without errors.

Next question: in principle, should I be able to access any property of a session server-side, simply by dereferencing its ID in...
Forum: nexusdb.public.support 30th April 2022, 05:12 PM
Replies: 18
Views: 1,393
Posted By RichardLight
I realised that my original problem was simply...

I realised that my original problem was simply that I was assigning a message ID to my plugin messages which had already been claimed by a standard server message in nxstMessages.pas. This meant that...
Forum: nexusdb.public.support 28th April 2022, 03:31 AM
Replies: 18
Views: 1,393
Posted By RichardLight
OK, thanks: that's what I needed. Richard

OK, thanks: that's what I needed.

Richard
Forum: nexusdb.public.support 28th April 2022, 03:03 AM
Replies: 18
Views: 1,393
Posted By RichardLight
Thorsten, Can you please point me towards an...

Thorsten,

Can you please point me towards an example? I don't see any 'messaging' or 'interface' projects in the Examples folder.

Thanks,

Richard
Forum: nexusdb.public.support 28th April 2022, 02:30 AM
Replies: 18
Views: 1,393
Posted By RichardLight
Server plugin

We are looking to support access across slow connections, and would like to carry out some operations on the server which would otherwise involve lots of round-tripping. An example is getting a list...
Forum: nexusdb.public.support 6th March 2021, 06:51 PM
Replies: 3
Views: 4,274
Posted By RichardLight
OK, thanks. Richard

OK, thanks.

Richard
Forum: nexusdb.public.support 6th March 2021, 05:19 AM
Replies: 3
Views: 4,274
Posted By RichardLight
I followed this up with a post to the nxscript...

I followed this up with a post to the nxscript forum just over a year ago, outlining what I had done to get an image server working. Returning to this topic, I see that that was the last post (in...
Forum: nexusdb.public.support 15th February 2021, 10:58 PM
Replies: 12
Views: 3,311
Posted By RichardLight
OK: thanks! Richard

OK: thanks!

Richard
Forum: nexusdb.public.support 13th February 2021, 09:38 PM
Replies: 12
Views: 3,311
Posted By RichardLight
Thank you, Thorsten. I can confirm that your...

Thank you, Thorsten. I can confirm that your updates to the code allow the use of KeyAsVariant where client and server have a NLS mismatch. Can we assume that these updates will be present in future...
Forum: nexusdb.public.support 12th February 2021, 08:14 PM
Replies: 12
Views: 3,311
Posted By RichardLight
One thing that would help would be if the...

One thing that would help would be if the standard message that NexusDb issues, on hitting an NLS mismatch, included some specifics of what locale it was expecting and what locale it actually found. ...
Forum: nexusdb.public.support 12th February 2021, 07:38 PM
Replies: 12
Views: 3,311
Posted By RichardLight
Is that just a matter of adding the unit which...

Is that just a matter of adding the unit which declares the custom key engine to the client program's Uses clause? Or is some more formal 'registration' of the custom key engine needed? I tried this...
Forum: nexusdb.public.support 12th February 2021, 05:06 AM
Replies: 12
Views: 3,311
Posted By RichardLight
Getting a key engine from a remote server

We have a program which gets lists of index keys for a specified index on a specified file. This works fine when the index in question uses a 'standard' key engine. It also works fine when run on...
Forum: nexusdb.public.support 6th February 2021, 08:22 PM
Replies: 16
Views: 3,552
Posted By RichardLight
So, something more like this?: if...

So, something more like this?:
if aAction = eaRecordModify then begin
MetaCursor.sbcSwitchToIndex('ControlIdentity', 1, false);
metaRecordBuffer :=...
Forum: nexusdb.public.support 6th February 2021, 12:40 AM
Replies: 16
Views: 3,552
Posted By RichardLight
For the benefit of anyone still interested in...

For the benefit of anyone still interested in this topic, here is what I have written in my monitor/extender to delete all the records in my meta-table which have the Id of this modified record in...
Forum: nexusdb.public.support 5th February 2021, 08:32 PM
Replies: 16
Views: 3,552
Posted By RichardLight
That's really helpful, Thorsten: thank...

That's really helpful, Thorsten: thank you.

Richard
Forum: nexusdb.public.support 5th February 2021, 01:25 AM
Replies: 16
Views: 3,552
Posted By RichardLight
Short answer is my lack of understanding of...

Short answer is my lack of understanding of server-side commands and a lack of examples/documentation to guide me in their use.

For example: Why do you need a record buffer to find a key? How do...
Forum: nexusdb.public.support 4th February 2021, 07:04 PM
Replies: 16
Views: 3,552
Posted By RichardLight
I think my monitor/extender is now broadly...

I think my monitor/extender is now broadly working. I ended up putting a cursor wrapper around each server table cursor, and using whichever object had a more helpful command. The main problem is the...
Forum: nexusdb.public.support 4th February 2021, 01:22 AM
Replies: 16
Views: 3,552
Posted By RichardLight
It sounds as though I would be wise to retreat to...

It sounds as though I would be wise to retreat to the relatively safe territory of the TnxServerTableCursor. I'll try re-casting my monitor/extender using server table cursor commands: I may be back...
Forum: nexusdb.public.support 4th February 2021, 12:51 AM
Replies: 16
Views: 3,552
Posted By RichardLight
TnxsdCursorWrapper.FindKey makes no use at all of...

TnxsdCursorWrapper.FindKey makes no use at all of the IndexName parameter, so presumably it searches whatever index is currently selected.
Forum: nexusdb.public.support 3rd February 2021, 10:51 PM
Replies: 16
Views: 3,552
Posted By RichardLight
It was going well, but I have an issue with the...

It was going well, but I have an issue with the cursor wrapper's FindKey function. If I use it on a three-field index:

then it interprets FindKey as I would expect. However, I have a simple index on...
Forum: nexusdb.public.support 30th January 2021, 03:21 AM
Replies: 16
Views: 3,552
Posted By RichardLight
Thank you, that will do the job nicely. Richard

Thank you, that will do the job nicely.

Richard
Forum: nexusdb.public.support 29th January 2021, 11:20 PM
Replies: 16
Views: 3,552
Posted By RichardLight
Monitor/extender coding

Hi,

I am writing a monitor/extender for our NexusDb server, whose job is to populate a meta-table with values derived from another table. On the client side, this involves code like this:

Is there...
Forum: nexusdb.public.support 29th January 2021, 01:35 AM
Replies: 1
Views: 1,610
Posted By RichardLight
IPv6 support

Hi,

I see mentions of the possibility of IPv6 support in NexusDb, going back a decade or so. What is the current situation, please? If it's still not implemented, do you have plans to do so? Or is...
Forum: nexusdb.public.support 16th October 2020, 01:56 AM
Replies: 4
Views: 2,319
Posted By RichardLight
When are edits saved to nx1 file?

Hi,

One of our users has observed that edits are not saved to disc immediately. The nx1 file holding the table in question only has its date/time updated when the user closes the client program...
Forum: nexusdb.public.discussions 13th March 2020, 03:27 AM
Replies: 0
Views: 4,007
Posted By RichardLight
Delphi/NexusDb developer sought

I will be stepping down as a developer for the Modes museum cataloguing software [1] next year, so the Modes Users Association is now looking for a contractor to take on some of the load of...
Forum: nexusdb.public.support.nxScript 26th February 2020, 10:19 PM
Replies: 0
Views: 8,604
Posted By RichardLight
Server delivering binary content

We're looking to replace a set of CGI programs with equivalent .nxscript applications. One of these programs is an 'image server', which delivers a dynamically sized version of an image file.

The...
Forum: nexusdb.public.support 6th September 2018, 04:52 PM
Replies: 3
Views: 4,274
Posted By RichardLight
Nxscript server delivering binary content

I've been working with the script-based web server, trying to implement the beginnings of a browser-based version of our Windows client. One thing I want to do is to deliver a PDF response.

I gave...
Forum: nexusdb.public.support 19th April 2018, 12:52 AM
Replies: 1
Views: 2,702
Posted By RichardLight
To partially answer my own question ... This...

To partially answer my own question ...

This behaviour applies when I use the context menu which appears when I right-click on the tray icon for the server. However, when I select 'Start service',...
Forum: nexusdb.public.support 18th April 2018, 09:54 PM
Replies: 1
Views: 2,702
Posted By RichardLight
nxServer running as service not visible

Hi,

Running the latest release (NexusDB413) I find that the standard nxServer is not visible to the Enterprise Manager when run as a service. However, it is visible when run as a program (in...
Forum: nexusdb.public.support 13th December 2017, 01:48 AM
Replies: 7
Views: 6,059
Posted By RichardLight
I'm building a custom NexusDB server, and I got...

I'm building a custom NexusDB server, and I got the same error (TokenExtractorDescriptor class not supported) when I built it with the 4.12 server code in Delphi 7 (yes, I know ...). The error only...
Forum: nexusdb.public.support 5th August 2016, 12:53 AM
Replies: 6
Views: 3,485
Posted By RichardLight
Eivind, Further questioning suggests that the...

Eivind,

Further questioning suggests that the NexusDB server is idle, as it should be, when there is no client activity. I suspect that the problem may be related to Windows hibernating (and then...
Forum: nexusdb.public.support 4th August 2016, 05:07 PM
Replies: 6
Views: 3,485
Posted By RichardLight
Memory use and idle NexusDB server

Hi,

Our Modes museum cataloguing software is based on a custom NexusDB implementation. One user (out of over 600) is having a problem:

"Modes is still running fine for a period of time until the...
Forum: nexusdb.public.support 20th October 2015, 02:18 AM
Replies: 15
Views: 8,589
Posted By RichardLight
NexusDB components and Android

Hi,

Now that Delphi 10 Seattle is providing support for Android as a target, what are your plans (if any) for providing NexusDB components which will support the Android platform?

Richard
Forum: nexusdb.public.support 31st October 2014, 02:16 AM
Replies: 1
Views: 2,790
Posted By RichardLight
Hi, Yes, I did exactly this some years ago in...

Hi,

Yes, I did exactly this some years ago in the context of indexing XML content. If you contact me at richard at light dot demon dot co dot uk we can talk about the context in which you're trying...
Forum: nexusdb.public.support 31st May 2012, 02:24 AM
Replies: 17
Views: 5,853
Posted By RichardLight
I did all of this, and found it made no...

I did all of this, and found it made no difference. The reason ... there was no filter in force at the time. This was just an asynchronous record count with an "each word" index selected, and so...
Forum: nexusdb.public.support 28th May 2012, 09:39 PM
Replies: 17
Views: 5,853
Posted By RichardLight
Correction ... it does hit the breakpoint, but...

Correction ... it does hit the breakpoint, but only several minutes later - after I had written the last post :) - and presumably after the Execute has pretty well finished anyway.

Richard
Forum: nexusdb.public.support 28th May 2012, 09:34 PM
Replies: 17
Views: 5,853
Posted By RichardLight
What I'm finding is that setting stiCancled to...

What I'm finding is that setting stiCancled to true in TnxServerTaskInfo.Cancel is not being noticed within the "while Result = DBIERR_NONE do ..." loop within the already-executing...
Forum: nexusdb.public.support 22nd May 2012, 02:57 AM
Replies: 17
Views: 5,853
Posted By RichardLight
With lightning speed ... :) Although we are...

With lightning speed ... :)

Although we are still persevering with version 2 (hopefully not for much longer), I think that my analysis applies to the version 3 code as well - at least, by...
Forum: nexusdb.public.support 19th April 2012, 04:43 AM
Replies: 62
Views: 13,265
Posted By RichardLight
Thanks, Thorsten: got that working. Richard

Thanks, Thorsten: got that working.

Richard
Forum: nexusdb.public.support 17th April 2012, 04:54 AM
Replies: 62
Views: 13,265
Posted By RichardLight
I think I can see a way forward with this, but...

I think I can see a way forward with this, but would appreciate a bit of help.

One thing we want to do is an efficient "contains" search. It occurs to me that this could be implemented as a key...
Forum: nexusdb.public.support 11th November 2011, 02:35 AM
Replies: 8
Views: 4,879
Posted By RichardLight
Just to note that this approach offers a handy...

Just to note that this approach offers a handy way of providing fulltext indexing support without having to update the structure of the source table. Since the cached table, with its associated...
Forum: nexusdb.public.support 8th November 2011, 09:45 PM
Replies: 8
Views: 4,879
Posted By RichardLight
Yes, I've understood that point now. It wasn't...

Yes, I've understood that point now. It wasn't clear [to me] from the documentation. I revised my code to create an AutoInc field only if it doesn't exist, and to create only one "fulltext" index...
Forum: nexusdb.public.support 8th November 2011, 03:51 AM
Replies: 8
Views: 4,879
Posted By RichardLight
Fulltext indexing and cached datasets

Hi,

Yes, I can report that it does work: I set up a fulltext index on a memo field in a cached table whose source is a table created using the EM. The cached table doesn't need the source table's...
Forum: nexusdb.public.support 5th November 2011, 08:33 PM
Replies: 8
Views: 4,879
Posted By RichardLight
Fulltext indexing and cached datasets

Thanks, Thorsten: I'll give it a go and report back.

Presumably this means that there is no requirement for the source table to have corresponding fulltext indexes?

Richard
Forum: nexusdb.public.support 5th November 2011, 05:13 AM
Replies: 8
Views: 4,879
Posted By RichardLight
Fulltext indexing and cached datasets

Hi,

Using 3.09. I'm trying to use a cached dataset, by linking it to a "real" dataset with a fulltext index, and then using the fulltext index to set a range on the cached dataset. However,...
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