Re: [Lazarus] TSQLQuery

[Corpsman]

you mean something like this :

  If Length(st)  0 Then Begin
SQLQuery1.SQL.Text := st;
  End
  Else Begin
exit;
  End;
  Try
SQLQuery1.Open;
  Except
On e: Exception Do Begin
  ShowMessage('Fehler ungültige Eingabe.'#13'Fehlermeldung:'#13 +
e.Message);
  exit;
End;
  End;


On 07/30/2015 04:45 PM, Terry A. Haimann wrote:
 After executing a query, is there a way to test if there were any
 errors?
 
 
 
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[Lazarus] TSQLQuery

[Terry A. Haimann]

After executing a query, is there a way to test if there were any
errors?



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Re: [Lazarus] File sync system approach

[Antonio Fortuny]

On 29.07.2015 12:37 carra, Aradeonas wrote:

Ok.Now I want to work on file sync part and for that I need to choose a
library.Indy,Synapse or ... .
What you guys prefer in this case?Synapse is easy to use and I like it
but Indy seems larger and more powerful but I didn't work with it.
For this case that I need to send and receive files in threads with
multi connections it seems I need TCP and there are demos but I want the
project stable and no need to rewrite it and maybe there will be need to
some p2p connections so I probably I will need to write many things
myself and this is not a problem but I want to ask you what library is
better in your experience and is there any demos for them in these case
or not?


Regards,
Ara



Hi Ara.

I'm working with Indy since a long time (Delphi). I've already done such 
a sync between systems and Lazarus using a multi-threaded approach and 
mixing platforms like Linux x86, Linux x86_64, Win32, Win64 and WinCE. 
Indy works on all those platforms, at least, the basic components (WinCE 
is the smallest one and everything is not implemented).


Anyway all this works in Indy way, using synchronous sockets and 
threads. It uses blocks as well as streams. Because server sockets work 
in a separated thread per connection, work is easy (just think 
processinf a sequential file). I agree on that synapse looks easier and 
it is easier actually. But because I'm used to Indy since years I always 
use it when TCP/IP connections are needed (ICMP too) just because I can 
control every step and I can set and control lots of timeouts.


Unfortunately I cannot show any sample because all library is owned by 
my previous employer. But it works very well.


Antonio.



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Re: [Lazarus] File sync system approach

[Aradeonas]

Thank you very much for sharing.

Ara


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