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tony |
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(* |
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* IBX Test suite. This program is used to test the IBX non-visual |
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* components and provides a semi-automated pass/fail check for each test. |
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* |
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* The contents of this file are subject to the Initial Developer's |
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* Public License Version 1.0 (the "License"); you may not use this |
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* file except in compliance with the License. You may obtain a copy |
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* of the License here: |
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* |
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl |
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* |
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* Software distributed under the License is distributed on an "AS |
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
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* implied. See the License for the specific language governing rights |
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* and limitations under the License. |
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* |
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* The Initial Developer of the Original Code is Tony Whyman. |
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* |
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* The Original Code is (C) 2021 Tony Whyman, MWA Software |
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* (http://www.mwasoftware.co.uk). |
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* |
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* All Rights Reserved. |
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* |
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* Contributor(s): ______________________________________. |
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* |
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*) |
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tony |
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unit Test08; |
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{$mode objfpc}{$H+} |
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{Test 8: TIBDataset: Locate, Bookmark and Lookup} |
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{ This test uses IBX to access the employee database in console mode. |
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The program opens the database, runs a query and writes the result to stdout. |
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It includes SQL parsing, and parameter setting prior to opening. The dataset |
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is also searched abd bookmarked |
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} |
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interface |
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uses |
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Classes, SysUtils, TestApplication, IBXTestBase, DB, IB, IBCustomDataSet, IBDatabase, IBQuery; |
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const |
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aTestID = '08'; |
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aTestTitle = 'TIBDataset: Locate, Bookmark and Lookup'; |
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type |
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{ TCalcQuery } |
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TCalcQuery = class(TIBQuery) |
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protected |
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procedure CreateFields; override; |
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end; |
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{ TTest08 } |
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TTest08 = class(TIBXTestBase) |
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private |
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FQuery: TIBQuery; |
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procedure HandleBeforeOpen(DataSet: TDataSet); |
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procedure HandleCalcFields(DataSet: TDataSet); |
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procedure PrintFields(aDataSet: TDataSet); |
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protected |
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procedure CreateObjects(Application: TTestApplication); override; |
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function GetTestID: AnsiString; override; |
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function GetTestTitle: AnsiString; override; |
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procedure InitTest; override; |
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public |
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procedure RunTest(CharSet: AnsiString; SQLDialect: integer); override; |
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end; |
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implementation |
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uses Variants, DateUtils; |
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const |
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sqlExample = |
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'with recursive Depts As ( '+ |
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'Select DEPT_NO, DEPARTMENT, HEAD_DEPT, cast(DEPARTMENT as VarChar(256)) as DEPT_PATH,'+ |
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'cast(DEPT_NO as VarChar(64)) as DEPT_KEY_PATH '+ |
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'From DEPARTMENT Where HEAD_DEPT is NULL '+ |
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'UNION ALL '+ |
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'Select D.DEPT_NO, D.DEPARTMENT, D.HEAD_DEPT, Depts.DEPT_PATH || '' / '' || D.DEPARTMENT as DEPT_PATH,'+ |
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'Depts.DEPT_KEY_PATH || '';'' || D.DEPT_NO as DEPT_KEY_PATH '+ |
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'From DEPARTMENT D '+ |
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'JOIN Depts On D.HEAD_DEPT = Depts.DEPT_NO '+ |
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')'+ |
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'Select A.EMP_NO, A.FIRST_NAME, A.LAST_NAME, A.PHONE_EXT, A.HIRE_DATE, A.DEPT_NO, A.JOB_CODE,'+ |
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'A.JOB_GRADE, A.JOB_COUNTRY, A.SALARY, A.FULL_NAME, D.DEPT_PATH, D.DEPT_KEY_PATH '+ |
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'From EMPLOYEE A '+ |
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'JOIN Depts D On D.DEPT_NO = A.DEPT_NO order by 1'; |
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{ TCalcQuery } |
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procedure TCalcQuery.CreateFields; |
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var f: TFieldDef; |
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begin |
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FieldDefs.Update; |
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f := FieldDefs.AddFieldDef; |
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f.Name := 'HireYear'; |
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f.DataType := ftInteger; |
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f.InternalCalcField := true; |
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f := FieldDefs.AddFieldDef; |
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f.Name := 'HireDatePlus1'; |
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f.DataType := ftDate; |
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f.InternalCalcField := true; |
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inherited CreateFields; |
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FieldByName('HireYear').FieldKind := fkCalculated; |
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FieldByName('HireDatePlus1').FieldKind := fkCalculated; |
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end; |
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{ TTest08 } |
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procedure TTest08.HandleBeforeOpen(DataSet: TDataSet); |
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begin |
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(Dataset as TIBParserDataset).Parser.Add2WhereClause('A.HIRE_DATE < :HIREDATE'); |
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(DataSet as TIBQuery).ParamByName('HireDate').AsString := '1/5/1991'; |
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end; |
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procedure TTest08.HandleCalcFields(DataSet: TDataSet); |
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begin |
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DataSet.FieldByName('HireYear').AsInteger := YearOf(DataSet.FieldByName('HIRE_DATE').AsDateTime); |
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DataSet.FieldByName('HireDatePlus1').AsDateTime := DataSet.FieldByName('HIRE_DATE').AsDateTime + 1; |
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end; |
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procedure TTest08.PrintFields(aDataSet: TDataSet); |
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var i: integer; |
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begin |
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for i := 0 to aDataSet.Fields.Count - 1 do |
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with aDataSet.Fields[i] do |
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writeln(OutFile,'Field No ',FieldNo,' Name = ',FieldName, ' DataType = ',DataType); |
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end; |
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procedure TTest08.CreateObjects(Application: TTestApplication); |
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begin |
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inherited CreateObjects(Application); |
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FQuery := TCalcQuery.Create(Application); |
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FQuery.Database := IBDatabase; |
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FQuery.BeforeOpen := @HandleBeforeOpen; |
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FQuery.OnCalcFields := @HandleCalcFields; |
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end; |
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function TTest08.GetTestID: AnsiString; |
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begin |
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Result := aTestID; |
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end; |
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function TTest08.GetTestTitle: AnsiString; |
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begin |
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Result := aTestTitle; |
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end; |
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procedure TTest08.InitTest; |
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begin |
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inherited InitTest; |
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IBDatabase.DatabaseName := Owner.GetEmployeeDatabaseName; |
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ReadOnlyTransaction; |
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FQuery.SQL.Text := sqlExample; |
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end; |
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procedure TTest08.RunTest(CharSet: AnsiString; SQLDialect: integer); |
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var stats: TPerfCounters; |
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aBookmark: TBookmark; |
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aResultFields: variant; |
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i: integer; |
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begin |
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with FQuery do |
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begin |
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AllowAutoActivateTransaction := true; |
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Active := true; |
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PrintFields(FQuery); |
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if Locate('EMP_NO', 12, []) then |
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PrintDataSetRow(FQuery) |
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else |
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begin |
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writeln(OutFile,'Error: Row not found for EMP_NO = 12'); |
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Exit; |
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end; |
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aBookmark := Bookmark; |
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if Locate('FIRST_NAME;LAST_NAME', VarArrayOf(['roger','Reeves']), [loCaseInsensitive]) then |
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PrintDataSetRow(FQuery) |
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else |
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begin |
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writeln(OutFile,'Error: Row not found for Roger Reeves'); |
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Exit; |
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end; |
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Bookmark := aBookmark; |
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writeln(OutFile,'Back to EMP_NO = 12'); |
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PrintDataSetRow(FQuery); |
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writeln(OutFile,'Locate Employee 20, First Name and Last Name'); |
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aResultFields := Lookup('EMP_NO',20,'FIRST_NAME;LAST_NAME'); |
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if varType(aResultFields) <> varNull then |
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begin |
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for i := VarArrayLowBound(aResultFields,1) to VarArrayHighBound(aResultFields,1) do |
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writeln(OutFile,'Field No. ',i,' = ',aResultFields[i]); |
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end |
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else |
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begin |
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writeln(OutFile,'Lookup Failed'); |
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Exit; |
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end; |
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writeln(OutFile); |
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writeln(OutFile,'Print All'); |
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PrintDataSet(FQuery); |
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Active := false; |
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end; |
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end; |
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initialization |
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RegisterTest(TTest08); |
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end. |
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