Thread safe using Database objects from main module in standard delphi unit

[albertovesx]

Hi, is it thread safe to add a standard Delphi Unit to use database manipulation functions with object from mainmodule?

for example:
 

function getInformation(DataSet: TuniQuery): Boolean;
begin
  // do something
end;

//call it like this

 if getInformation(MainModule.qryPerson) then
  // do something

 

 

[Abaksoft]

On 2/8/2022 at 8:39 PM, albertovesx said:

Hi, is it thread safe to add a standard Delphi Unit to use database manipulation functions with object from mainmodule?

for example:
 

function getInformation(DataSet: TuniQuery): Boolean;
begin
  // do something
end;

//call it like this

 if getInformation(MainModule.qryPerson) then
  // do something

 

 

Good question.

IMHO, No it's not safe.

A classical vcl Unit, is like a static model, witch will be view by all sessions.

How can you garantee that a DataSet sended by a session, matches the correct session ?

So, for this reason it's desirable and  advisable to use UniDataModule.

Even better : you can create a class on a UniDataModule and work with object on UniFrame or UniForm.

Obj.myDataSet:=Query1;

If obj.fct_GetInformation then...

 

Related topic:

http://forums.unigui.com/index.php?/topic/11974-global-variable/&do=findComment&comment=63879