trunk/testsuite/Test08.pas

unit Test08;

{$mode objfpc}{$H+}

{Test 8: TIBDataset: Locate, Bookmark and Lookup}

{  This test uses IBX to access the employee database in console mode.
  The program opens the database, runs a query and writes the result to stdout.
  It includes SQL parsing, and parameter setting prior to opening. The dataset
  is also searched abd bookmarked

}

interface

uses
  Classes, SysUtils, TestApplication, IBXTestBase, DB, IB, IBCustomDataSet, IBDatabase, IBQuery;

const
  aTestID    = '08';
  aTestTitle = 'TIBDataset: Locate, Bookmark and Lookup';

type

  { TCalcQuery }

  TCalcQuery = class(TIBQuery)
  protected
    procedure CreateFields; override;
  end;

  { TTest08 }

  TTest08 = class(TIBXTestBase)
  private
    FQuery: TIBQuery;
    procedure HandleBeforeOpen(DataSet: TDataSet);
    procedure HandleCalcFields(DataSet: TDataSet);
    procedure PrintFields(aDataSet: TDataSet);
  protected
    procedure CreateObjects(Application: TTestApplication); override;
    function GetTestID: AnsiString; override;
    function GetTestTitle: AnsiString; override;
    procedure InitTest; override;
  public
    procedure RunTest(CharSet: AnsiString; SQLDialect: integer); override;
  end;


implementation

uses Variants, DateUtils;

const
  sqlExample =
'with recursive Depts As (   '+
'Select DEPT_NO, DEPARTMENT, HEAD_DEPT, cast(DEPARTMENT  as VarChar(256)) as DEPT_PATH,'+
'cast(DEPT_NO as VarChar(64)) as DEPT_KEY_PATH '+
'From DEPARTMENT Where HEAD_DEPT is NULL '+
'UNION ALL '+
'Select D.DEPT_NO, D.DEPARTMENT, D.HEAD_DEPT, Depts.DEPT_PATH ||  '' / '' || D.DEPARTMENT as DEPT_PATH,'+
'Depts.DEPT_KEY_PATH || '';'' || D.DEPT_NO as DEPT_KEY_PATH '+
'From DEPARTMENT D '+
'JOIN Depts On D.HEAD_DEPT = Depts.DEPT_NO '+
')'+

'Select A.EMP_NO, A.FIRST_NAME, A.LAST_NAME, A.PHONE_EXT, A.HIRE_DATE, A.DEPT_NO, A.JOB_CODE,'+
'A.JOB_GRADE, A.JOB_COUNTRY, A.SALARY, A.FULL_NAME, D.DEPT_PATH, D.DEPT_KEY_PATH '+
'From EMPLOYEE A '+
'JOIN Depts D On D.DEPT_NO = A.DEPT_NO order by 1';

{ TCalcQuery }

procedure TCalcQuery.CreateFields;
var  f: TFieldDef;
begin
  FieldDefs.Update;
  f := FieldDefs.AddFieldDef;
  f.Name := 'HireYear';
  f.DataType := ftInteger;
  f.InternalCalcField := true;
  f := FieldDefs.AddFieldDef;
  f.Name := 'HireDatePlus1';
  f.DataType := ftDate;
  f.InternalCalcField := true;
  inherited CreateFields;
  FieldByName('HireYear').FieldKind := fkCalculated;
  FieldByName('HireDatePlus1').FieldKind := fkCalculated;
end;

  { TTest08 }

procedure TTest08.HandleBeforeOpen(DataSet: TDataSet);
begin
  (Dataset as TIBParserDataset).Parser.Add2WhereClause('A.HIRE_DATE < :HIREDATE');
  (DataSet as TIBQuery).ParamByName('HireDate').AsString := '1/5/1991';
end;

procedure TTest08.HandleCalcFields(DataSet: TDataSet);
begin
  DataSet.FieldByName('HireYear').AsInteger := YearOf(DataSet.FieldByName('HIRE_DATE').AsDateTime);
  DataSet.FieldByName('HireDatePlus1').AsDateTime := DataSet.FieldByName('HIRE_DATE').AsDateTime + 1;
end;

procedure TTest08.PrintFields(aDataSet: TDataSet);
var i: integer;
begin
  for i := 0 to aDataSet.Fields.Count - 1 do
    with aDataSet.Fields[i] do
    writeln(OutFile,'Field No ',FieldNo,' Name = ',FieldName, ' DataType = ',DataType);
end;

procedure TTest08.CreateObjects(Application: TTestApplication);
begin
  inherited CreateObjects(Application);
  FQuery := TCalcQuery.Create(Application);
  FQuery.Database := IBDatabase;
  FQuery.BeforeOpen := @HandleBeforeOpen;
  FQuery.OnCalcFields := @HandleCalcFields;
end;

function TTest08.GetTestID: AnsiString;
begin
  Result := aTestID;
end;

function TTest08.GetTestTitle: AnsiString;
begin
  Result := aTestTitle;
end;

procedure TTest08.InitTest;
begin
  inherited InitTest;
  IBDatabase.DatabaseName := Owner.GetEmployeeDatabaseName;
  ReadOnlyTransaction;
  FQuery.SQL.Text := sqlExample;
end;

procedure TTest08.RunTest(CharSet: AnsiString; SQLDialect: integer);
var stats: TPerfCounters;
    aBookmark: TBookmark;
    aResultFields: variant;
    i: integer;
begin
  with FQuery do
  begin
     AllowAutoActivateTransaction := true;
     Active := true;
     PrintFields(FQuery);
     if Locate('EMP_NO', 12, []) then
       PrintDataSetRow(FQuery)
     else
     begin
       writeln(OutFile,'Error: Row not found for EMP_NO = 12');
       Exit;
     end;

     aBookmark := Bookmark;
     if Locate('FIRST_NAME;LAST_NAME', VarArrayOf(['roger','Reeves']), [loCaseInsensitive]) then
       PrintDataSetRow(FQuery)
     else
     begin
       writeln(OutFile,'Error: Row not found for Roger Reeves');
       Exit;
     end;
     Bookmark := aBookmark;
     writeln(OutFile,'Back to EMP_NO = 12');
     PrintDataSetRow(FQuery);

     writeln(OutFile,'Locate Employee 20, First Name and Last Name');
     aResultFields := Lookup('EMP_NO',20,'FIRST_NAME;LAST_NAME');
     if varType(aResultFields) <> varNull then
     begin
       for i := VarArrayLowBound(aResultFields,1) to VarArrayHighBound(aResultFields,1) do
         writeln(OutFile,'Field No. ',i,' = ',aResultFields[i]);
     end
     else
     begin
       writeln(OutFile,'Lookup Failed');
       Exit;
     end;


     writeln(OutFile);
     writeln(OutFile,'Print All');
     PrintDataSet(FQuery);
     Active := false;
  end;
end;

initialization
  RegisterTest(TTest08);

end.

Revision:	315
Committed:	Thu Feb 25 11:56:36 2021 UTC (3 years, 8 months ago) by tony
Content type:	text/x-pascal
File size:	5258 byte(s)
Log Message:	Updated for IBX 4 release
#	User	Rev	Content
1	tony	315	unit Test08;
2
3			{$mode objfpc}{$H+}
4
5			{Test 8: TIBDataset: Locate, Bookmark and Lookup}
6
7			{ This test uses IBX to access the employee database in console mode.
8			The program opens the database, runs a query and writes the result to stdout.
9			It includes SQL parsing, and parameter setting prior to opening. The dataset
10			is also searched abd bookmarked
11
12			}
13
14			interface
15
16			uses
17			Classes, SysUtils, TestApplication, IBXTestBase, DB, IB, IBCustomDataSet, IBDatabase, IBQuery;
18
19			const
20			aTestID = '08';
21			aTestTitle = 'TIBDataset: Locate, Bookmark and Lookup';
22
23			type
24
25			{ TCalcQuery }
26
27			TCalcQuery = class(TIBQuery)
28			protected
29			procedure CreateFields; override;
30			end;
31
32			{ TTest08 }
33
34			TTest08 = class(TIBXTestBase)
35			private
36			FQuery: TIBQuery;
37			procedure HandleBeforeOpen(DataSet: TDataSet);
38			procedure HandleCalcFields(DataSet: TDataSet);
39			procedure PrintFields(aDataSet: TDataSet);
40			protected
41			procedure CreateObjects(Application: TTestApplication); override;
42			function GetTestID: AnsiString; override;
43			function GetTestTitle: AnsiString; override;
44			procedure InitTest; override;
45			public
46			procedure RunTest(CharSet: AnsiString; SQLDialect: integer); override;
47			end;
48
49
50			implementation
51
52			uses Variants, DateUtils;
53
54			const
55			sqlExample =
56			'with recursive Depts As ( '+
57			'Select DEPT_NO, DEPARTMENT, HEAD_DEPT, cast(DEPARTMENT as VarChar(256)) as DEPT_PATH,'+
58			'cast(DEPT_NO as VarChar(64)) as DEPT_KEY_PATH '+
59			'From DEPARTMENT Where HEAD_DEPT is NULL '+
60			'UNION ALL '+
61			'Select D.DEPT_NO, D.DEPARTMENT, D.HEAD_DEPT, Depts.DEPT_PATH \|\| '' / '' \|\| D.DEPARTMENT as DEPT_PATH,'+
62			'Depts.DEPT_KEY_PATH \|\| '';'' \|\| D.DEPT_NO as DEPT_KEY_PATH '+
63			'From DEPARTMENT D '+
64			'JOIN Depts On D.HEAD_DEPT = Depts.DEPT_NO '+
65			')'+
66
67			'Select A.EMP_NO, A.FIRST_NAME, A.LAST_NAME, A.PHONE_EXT, A.HIRE_DATE, A.DEPT_NO, A.JOB_CODE,'+
68			'A.JOB_GRADE, A.JOB_COUNTRY, A.SALARY, A.FULL_NAME, D.DEPT_PATH, D.DEPT_KEY_PATH '+
69			'From EMPLOYEE A '+
70			'JOIN Depts D On D.DEPT_NO = A.DEPT_NO order by 1';
71
72			{ TCalcQuery }
73
74			procedure TCalcQuery.CreateFields;
75			var f: TFieldDef;
76			begin
77			FieldDefs.Update;
78			f := FieldDefs.AddFieldDef;
79			f.Name := 'HireYear';
80			f.DataType := ftInteger;
81			f.InternalCalcField := true;
82			f := FieldDefs.AddFieldDef;
83			f.Name := 'HireDatePlus1';
84			f.DataType := ftDate;
85			f.InternalCalcField := true;
86			inherited CreateFields;
87			FieldByName('HireYear').FieldKind := fkCalculated;
88			FieldByName('HireDatePlus1').FieldKind := fkCalculated;
89			end;
90
91			{ TTest08 }
92
93			procedure TTest08.HandleBeforeOpen(DataSet: TDataSet);
94			begin
95			(Dataset as TIBParserDataset).Parser.Add2WhereClause('A.HIRE_DATE < :HIREDATE');
96			(DataSet as TIBQuery).ParamByName('HireDate').AsString := '1/5/1991';
97			end;
98
99			procedure TTest08.HandleCalcFields(DataSet: TDataSet);
100			begin
101			DataSet.FieldByName('HireYear').AsInteger := YearOf(DataSet.FieldByName('HIRE_DATE').AsDateTime);
102			DataSet.FieldByName('HireDatePlus1').AsDateTime := DataSet.FieldByName('HIRE_DATE').AsDateTime + 1;
103			end;
104
105			procedure TTest08.PrintFields(aDataSet: TDataSet);
106			var i: integer;
107			begin
108			for i := 0 to aDataSet.Fields.Count - 1 do
109			with aDataSet.Fields[i] do
110			writeln(OutFile,'Field No ',FieldNo,' Name = ',FieldName, ' DataType = ',DataType);
111			end;
112
113			procedure TTest08.CreateObjects(Application: TTestApplication);
114			begin
115			inherited CreateObjects(Application);
116			FQuery := TCalcQuery.Create(Application);
117			FQuery.Database := IBDatabase;
118			FQuery.BeforeOpen := @HandleBeforeOpen;
119			FQuery.OnCalcFields := @HandleCalcFields;
120			end;
121
122			function TTest08.GetTestID: AnsiString;
123			begin
124			Result := aTestID;
125			end;
126
127			function TTest08.GetTestTitle: AnsiString;
128			begin
129			Result := aTestTitle;
130			end;
131
132			procedure TTest08.InitTest;
133			begin
134			inherited InitTest;
135			IBDatabase.DatabaseName := Owner.GetEmployeeDatabaseName;
136			ReadOnlyTransaction;
137			FQuery.SQL.Text := sqlExample;
138			end;
139
140			procedure TTest08.RunTest(CharSet: AnsiString; SQLDialect: integer);
141			var stats: TPerfCounters;
142			aBookmark: TBookmark;
143			aResultFields: variant;
144			i: integer;
145			begin
146			with FQuery do
147			begin
148			AllowAutoActivateTransaction := true;
149			Active := true;
150			PrintFields(FQuery);
151			if Locate('EMP_NO', 12, []) then
152			PrintDataSetRow(FQuery)
153			else
154			begin
155			writeln(OutFile,'Error: Row not found for EMP_NO = 12');
156			Exit;
157			end;
158
159			aBookmark := Bookmark;
160			if Locate('FIRST_NAME;LAST_NAME', VarArrayOf(['roger','Reeves']), [loCaseInsensitive]) then
161			PrintDataSetRow(FQuery)
162			else
163			begin
164			writeln(OutFile,'Error: Row not found for Roger Reeves');
165			Exit;
166			end;
167			Bookmark := aBookmark;
168			writeln(OutFile,'Back to EMP_NO = 12');
169			PrintDataSetRow(FQuery);
170
171			writeln(OutFile,'Locate Employee 20, First Name and Last Name');
172			aResultFields := Lookup('EMP_NO',20,'FIRST_NAME;LAST_NAME');
173			if varType(aResultFields) <> varNull then
174			begin
175			for i := VarArrayLowBound(aResultFields,1) to VarArrayHighBound(aResultFields,1) do
176			writeln(OutFile,'Field No. ',i,' = ',aResultFields[i]);
177			end
178			else
179			begin
180			writeln(OutFile,'Lookup Failed');
181			Exit;
182			end;
183
184
185			writeln(OutFile);
186			writeln(OutFile,'Print All');
187			PrintDataSet(FQuery);
188			Active := false;
189			end;
190			end;
191
192			initialization
193			RegisterTest(TTest08);
194
195			end.
196