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Found 2 results

  1. Giorgi Chapidze

    Set pipeline between UI and cmd.exe

    Hi! I am developing a simple editor application in which you can type Pascal code and click the compile button, which will connect cmd.exe in the background and compile a .pas file via freepascalcompiler. I have two separate TMemo components. one for writing source code and a second read-only component for showing compilation messages. To sum up, I want to execute the "fpc file_name. pas" command in the background and then grab the compiled messages and display them on the UI. How can I achieve such behavior? https://github.com/gchapidze/fmx-pascalIDE
  2. OmahaMax

    OmniThread with Database

    The following code works perfectly with one task but fails to process one input variable with two tasks, two input variables with three tasks, etc. pipeline := Parallel .Pipeline .Stage( procedure(const input, output: IOmniBlockingCollection) var NewAmt, OldAmt: Currency; aDataObj: TDataObj; aValue: TOmniValue; aDm: TdmRetriever; begin aDm := TdmRetriever.Create(nil); aDm.SetUp(DataPath); aDataObj := TDataObj.Create('', 0, 0); try for aValue in input do // input is a stringlist of AcctNum begin s := aValue.AsString; MySL.Add(s); aDm.qRetrieverNew.SQL.Text := 'SELECT SUM(Amount) AS CurrYrAmt FROM TransBS' + #13 + 'WHERE (dDate <= ' + QuotedStr(ThruDateStr) + ') AND (AcctNum = ' + QuotedStr(s) + ')'; aDm.qRetrieverOld.SQL.Text := 'SELECT SUM(Amount) AS PrevYrAmt FROM TransBS' + #13 + 'WHERE (dDate <= ' + QuotedStr(PrevThruDateStr) + ') AND (AcctNum = ' + QuotedStr(s) + ')'; aDm.qRetrieverNew.Open; aDm.qRetrieverOld.Open; // Everything continues fine with one task; execution continues with first AcctNum // The first AcctNum is not processed below with two tasks // The first and second AcctNum are not processed below with three tasks if not VarIsNull(aDm.qRetrieverNew.FieldByName('CurrYrAmt').AsVariant) then NewAmt := aDm.qRetrieverNew.FieldByName('CurrYrAmt').AsCurrency else NewAmt := 0; if not VarIsNull(aDm.qRetrieverOld.FieldByName('PrevYrAmt').AsVariant) then OldAmt := aDm.qRetrieverOld.FieldByName('PrevYrAmt').AsCurrency else OldAmt := 0; MySL.Add(s + ', ' + CurrToStr(NewAmt) + ', ' + CurrToStr(OldAmt) ); aDataObj.fAcctNum := s; aDataObj.fCurrYr := NewAmt; aDataObj.fPrevYr := OldAmt; if not output.TryAdd(aDataObj) then break; end; aDm.SessionRetriever.CloseDatabase(aDm.dbRetriever); aDm.SessionRetriever.DropConnections; finally aDataObj.Free; aDm.Free; end; end ).NumTasks(aNumTasks) .Stage( The results, as logged to the MySL stringlist, are attached. I have no idea how to fix this. "aDm" is datamodule I create which contains the queries. I have placed the query openingss in a try-except and never received an error. I have placed query.isempty in a while loop since the query for AcctNum 1111 takes about 4 seconds. The answer is probably something simple, but I'm at a loss as to what I am doing wrong. Will appreciate any help. Log.txt
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