examples/employee/unit1.pas

unit Unit1; 

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, DBGrids,
  StdCtrls, ActnList, EditBtn, DbCtrls, ExtCtrls, Buttons, IBDatabase, IBQuery,
  IBCustomDataSet, IBUpdateSQL, IBDynamicGrid, IBLookupComboEditBox,
  db, DBExtCtrls;

type

  { TForm1 }

  TForm1 = class(TForm)
    DBEdit6: TDBEdit;
    EmployeesDEPT_KEY_PATH: TIBStringField;
    EmployeesDEPT_PATH: TIBStringField;
    IBLookupComboEditBox1: TIBLookupComboEditBox;
    IBLookupComboEditBox2: TIBLookupComboEditBox;
    SelectDept: TAction;
    Button4: TButton;
    Button5: TButton;
    CancelChanges: TAction;
    SalaryRange: TComboBox;
    CountrySource: TDataSource;
    BeforeDate: TDateEdit;
    AfterDate: TDateEdit;
    DeptsSource: TDataSource;
    Depts: TIBQuery;
    JobCodeSource: TDataSource;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    DBEdit4: TDBEdit;
    DBEdit5: TDBEdit;
    DBText1: TDBText;
    Employees: TIBDataSet;
    EmployeesDEPT_NO: TIBStringField;
    EmployeesEMP_NO: TSmallintField;
    EmployeesFIRST_NAME: TIBStringField;
    EmployeesFULL_NAME: TIBStringField;
    EmployeesHIRE_DATE: TDateTimeField;
    EmployeesJOB_CODE: TIBStringField;
    EmployeesJOB_COUNTRY: TIBStringField;
    EmployeesJOB_GRADE: TSmallintField;
    EmployeesLAST_NAME: TIBStringField;
    EmployeesPHONE_EXT: TIBStringField;
    EmployeesSALARY: TIBBCDField;
    IBDateEdit1: TDBDateEdit;
    IBDynamicGrid1: TIBDynamicGrid;
    Countries: TIBQuery;
    JobCodes: TIBQuery;
    JobGradeDBComboBox: TDBComboBox;
    Label10: TLabel;
    Label11: TLabel;
    Label12: TLabel;
    Label13: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Label9: TLabel;
    Panel1: TPanel;
    Panel2: TPanel;
    EmployeeEditorPanel: TPanel;
    SpeedButton1: TSpeedButton;
    TotalsQueryTOTALSALARIES: TIBBCDField;
    TotalsSource: TDataSource;
    TotalsQuery: TIBQuery;
    Label1: TLabel;
    Label2: TLabel;
    SaveChanges: TAction;
    DeleteEmployee: TAction;
    EditEmployee: TAction;
    AddEmployee: TAction;
    ActionList1: TActionList;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    EmployeeSource: TDataSource;
    IBDatabase1: TIBDatabase;
    IBTransaction1: TIBTransaction;
    procedure EmployeesAfterPost(DataSet: TDataSet);
    procedure JobGradeDBComboBoxCloseUp(Sender: TObject);
    procedure SelectDeptExecute(Sender: TObject);
    procedure AddEmployeeExecute(Sender: TObject);
    procedure BeforeDateChange(Sender: TObject);
    procedure CancelChangesExecute(Sender: TObject);
    procedure CountriesBeforeOpen(DataSet: TDataSet);
    procedure DeleteEmployeeExecute(Sender: TObject);
    procedure EditEmployeeExecute(Sender: TObject);
    procedure EditEmployeeUpdate(Sender: TObject);
    procedure EmployeesAfterInsert(DataSet: TDataSet);
    procedure EmployeesAfterOpen(DataSet: TDataSet);
    procedure EmployeesAfterScroll(DataSet: TDataSet);
    procedure EmployeesBeforeClose(DataSet: TDataSet);
    procedure EmployeesBeforeOpen(DataSet: TDataSet);
    procedure EmployeesJOB_CODEChange(Sender: TField);
    procedure EmployeesJOB_GRADEChange(Sender: TField);
    procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
    procedure FormShow(Sender: TObject);
    procedure EmployeesAfterDelete(DataSet: TDataSet);
    procedure EmployeesAfterTransactionEnd(Sender: TObject);
    procedure EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
      var DataAction: TDataAction);
    procedure EmployeesSALARYGetText(Sender: TField; var aText: string;
      DisplayText: Boolean);
    procedure JobCodesBeforeOpen(DataSet: TDataSet);
    procedure SaveChangesExecute(Sender: TObject);
    procedure SaveChangesUpdate(Sender: TObject);
  private
    { private declarations }
    FDirty: boolean;
    FClosing: boolean;
    procedure Reopen(Data: PtrInt);
  public
    { public declarations }
  end; 

var
  Form1: TForm1; 

implementation

{$R *.lfm}

uses IB, Unit2;

function ExtractDBException(msg: string): string;
var Lines: TStringList;
begin
     Lines := TStringList.Create;
     try
       Lines.Text := msg;
       if pos('exception',Lines[0]) = 1 then
         Result := Lines[2]
       else
         Result := msg
     finally
       Lines.Free
     end;
end;

{ TForm1 }

procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string;
  DisplayText: Boolean);
begin
  if DisplayText then
  begin
    if Sender.IsNUll then
      aText := ''
    else
      aText := FormatFloat('$#,##0.00',Sender.AsFloat)
  end
  else
    aText := Sender.AsString
end;

procedure TForm1.JobCodesBeforeOpen(DataSet: TDataSet);
begin
  JobCodes.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
  JobCodes.ParamByName('JOB_COUNTRY').AsString := EmployeesJOB_COUNTRY.AsString
end;

procedure TForm1.SaveChangesExecute(Sender: TObject);
begin
  Employees.Transaction.Commit
end;

procedure TForm1.SaveChangesUpdate(Sender: TObject);
begin
  (Sender as TAction).Enabled := FDirty
end;

procedure TForm1.Reopen(Data: PtrInt);
begin
  with IBTransaction1 do
    if not InTransaction then StartTransaction;
  Countries.Active := true;
  Employees.Active := true;
  JobCodes.Active := true;
  Depts.Active := true;
end;

procedure TForm1.AddEmployeeExecute(Sender: TObject);
begin
  Employees.Append
end;

procedure TForm1.SelectDeptExecute(Sender: TObject);
var Dept_No: string;
begin
  if SelectDeptDlg.ShowModal(EmployeesDEPT_KEY_PATH.AsString,Dept_No) = mrOK then
  begin
    Employees.Edit;
    EmployeesDEPT_NO.AsString := Dept_No;
    try
      Employees.Post;
    except
      Employees.Cancel;
      raise;
    end;
    IBDynamicGrid1.ShowEditorPanel;
  end;
end;

procedure TForm1.EmployeesAfterPost(DataSet: TDataSet);
begin
  Employees.Refresh
end;

procedure TForm1.JobGradeDBComboBoxCloseUp(Sender: TObject);
begin
  JobGradeDBComboBox.EditingDone; //See http://bugs.freepascal.org/view.php?id=27186
end;

procedure TForm1.BeforeDateChange(Sender: TObject);
begin
  Employees.Active := false;
  Employees.Active := true
end;

procedure TForm1.CancelChangesExecute(Sender: TObject);
begin
  Employees.Transaction.Rollback
end;

procedure TForm1.CountriesBeforeOpen(DataSet: TDataSet);
begin
  Countries.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
  Countries.ParamByName('JOB_CODE').AsString := EmployeesJOB_CODE.AsString
end;

procedure TForm1.DeleteEmployeeExecute(Sender: TObject);
begin
  if MessageDlg(
    Format('Remove %s from Employee List?',[Employees.FieldByName('Full_Name').AsString]),
    mtConfirmation,[mbYes,mbNo],0) = mrYes then
    Employees.Delete
end;

procedure TForm1.EditEmployeeExecute(Sender: TObject);
begin
  IBDynamicGrid1.ShowEditorPanel;
end;

procedure TForm1.EditEmployeeUpdate(Sender: TObject);
begin
  (Sender as TAction).Enabled := Employees.Active and (Employees.RecordCount > 0)
end;

procedure TForm1.EmployeesAfterInsert(DataSet: TDataSet);
begin
  EmployeesJOB_COUNTRY.AsString := 'USA';
  EmployeesJOB_CODE.AsString := 'SRep';
  EmployeesJOB_GRADE.AsInteger := 4;
  EmployeesSALARY.AsCurrency := 20000;
  EmployeesFIRST_NAME.AsString := '<no name>';
  EmployeesLAST_NAME.AsString := '<no name>';
  EmployeesHIRE_DATE.AsDateTime := now;
  EmployeesDEPT_NO.AsString := '000';
  FDirty := true;
end;

procedure TForm1.EmployeesAfterOpen(DataSet: TDataSet);
begin
  TotalsQuery.Active := true
end;

procedure TForm1.EmployeesAfterScroll(DataSet: TDataSet);
begin
  Countries.Active := false;
  JobCodes.Active := false;
  Countries.Active := true;
  JobCodes.Active := true;
end;

procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
begin
  with DataSet do
    if State in [dsInsert,dsEdit] then
    try
     Post;
    except
      Cancel;
      raise;
    end;
  TotalsQuery.Active := false
end;

procedure TForm1.EmployeesBeforeOpen(DataSet: TDataSet);
begin
  if BeforeDate.Date > 0 then
     (DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE < :BeforeDate');
  if AfterDate.Date > 0 then
     (DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE > :AfterDate');

  case SalaryRange.ItemIndex of
  1:
    (DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary < 40000');
  2:
    (DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 40000 and Salary < 100000');
  3:
    (DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 100000');
  end;


  {Parameter value must be set after all SQL changes have been made}
  if BeforeDate.Date > 0 then
     (DataSet as TIBParserDataSet).ParamByName('BeforeDate').AsDateTime := BeforeDate.Date;
  if AfterDate.Date > 0 then
   (DataSet as TIBParserDataSet).ParamByName('AfterDate').AsDateTime := AfterDate.Date;

end;

procedure TForm1.EmployeesJOB_CODEChange(Sender: TField);
begin
  Countries.Active := false;
  Countries.Active := true;
end;

procedure TForm1.EmployeesJOB_GRADEChange(Sender: TField);
begin
  Countries.Active := false;
  JobCodes.Active := false;
  Countries.Active := true;
  JobCodes.Active := true;
end;

procedure TForm1.FormClose(Sender: TObject; var CloseAction: TCloseAction);
begin
  FClosing := true;
  if IBTransaction1.InTransaction then
    IBTransaction1.Commit;
end;

procedure TForm1.FormShow(Sender: TObject);
begin
  repeat
    try
      IBDatabase1.Connected := true;
    except
     on E:EIBClientError do
      begin
        Close;
        Exit
      end;
    On E:Exception do
     MessageDlg(E.Message,mtError,[mbOK],0);
    end;
  until IBDatabase1.Connected;
  Reopen(0);
end;

procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet);
begin
  FDirty := true
end;

procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject);
begin
  FDirty := false;
  if not FClosing then
    Application.QueueAsyncCall(@Reopen,0)
end;

procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
  var DataAction: TDataAction);
begin
  if E is EIBError then
   begin
       MessageDlg(ExtractDBException(EIBError(E).message),mtError,[mbOK],0);
       DataSet.Cancel;
       DataAction  := daAbort
   end;
end;

end.

Revision:	21
Committed:	Thu Feb 26 10:33:34 2015 UTC (9 years, 9 months ago) by tony
Content type:	text/x-pascal
File size:	10560 byte(s)
Log Message:	Committing updates for Release R1-2-0
#	Content
1	unit Unit1;
2
3	{$mode objfpc}{$H+}
4
5	interface
6
7	uses
8	Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, DBGrids,
9	StdCtrls, ActnList, EditBtn, DbCtrls, ExtCtrls, Buttons, IBDatabase, IBQuery,
10	IBCustomDataSet, IBUpdateSQL, IBDynamicGrid, IBLookupComboEditBox,
11	db, DBExtCtrls;
12
13	type
14
15	{ TForm1 }
16
17	TForm1 = class(TForm)
18	DBEdit6: TDBEdit;
19	EmployeesDEPT_KEY_PATH: TIBStringField;
20	EmployeesDEPT_PATH: TIBStringField;
21	IBLookupComboEditBox1: TIBLookupComboEditBox;
22	IBLookupComboEditBox2: TIBLookupComboEditBox;
23	SelectDept: TAction;
24	Button4: TButton;
25	Button5: TButton;
26	CancelChanges: TAction;
27	SalaryRange: TComboBox;
28	CountrySource: TDataSource;
29	BeforeDate: TDateEdit;
30	AfterDate: TDateEdit;
31	DeptsSource: TDataSource;
32	Depts: TIBQuery;
33	JobCodeSource: TDataSource;
34	DBEdit1: TDBEdit;
35	DBEdit2: TDBEdit;
36	DBEdit3: TDBEdit;
37	DBEdit4: TDBEdit;
38	DBEdit5: TDBEdit;
39	DBText1: TDBText;
40	Employees: TIBDataSet;
41	EmployeesDEPT_NO: TIBStringField;
42	EmployeesEMP_NO: TSmallintField;
43	EmployeesFIRST_NAME: TIBStringField;
44	EmployeesFULL_NAME: TIBStringField;
45	EmployeesHIRE_DATE: TDateTimeField;
46	EmployeesJOB_CODE: TIBStringField;
47	EmployeesJOB_COUNTRY: TIBStringField;
48	EmployeesJOB_GRADE: TSmallintField;
49	EmployeesLAST_NAME: TIBStringField;
50	EmployeesPHONE_EXT: TIBStringField;
51	EmployeesSALARY: TIBBCDField;
52	IBDateEdit1: TDBDateEdit;
53	IBDynamicGrid1: TIBDynamicGrid;
54	Countries: TIBQuery;
55	JobCodes: TIBQuery;
56	JobGradeDBComboBox: TDBComboBox;
57	Label10: TLabel;
58	Label11: TLabel;
59	Label12: TLabel;
60	Label13: TLabel;
61	Label3: TLabel;
62	Label4: TLabel;
63	Label5: TLabel;
64	Label6: TLabel;
65	Label7: TLabel;
66	Label8: TLabel;
67	Label9: TLabel;
68	Panel1: TPanel;
69	Panel2: TPanel;
70	EmployeeEditorPanel: TPanel;
71	SpeedButton1: TSpeedButton;
72	TotalsQueryTOTALSALARIES: TIBBCDField;
73	TotalsSource: TDataSource;
74	TotalsQuery: TIBQuery;
75	Label1: TLabel;
76	Label2: TLabel;
77	SaveChanges: TAction;
78	DeleteEmployee: TAction;
79	EditEmployee: TAction;
80	AddEmployee: TAction;
81	ActionList1: TActionList;
82	Button1: TButton;
83	Button2: TButton;
84	Button3: TButton;
85	EmployeeSource: TDataSource;
86	IBDatabase1: TIBDatabase;
87	IBTransaction1: TIBTransaction;
88	procedure EmployeesAfterPost(DataSet: TDataSet);
89	procedure JobGradeDBComboBoxCloseUp(Sender: TObject);
90	procedure SelectDeptExecute(Sender: TObject);
91	procedure AddEmployeeExecute(Sender: TObject);
92	procedure BeforeDateChange(Sender: TObject);
93	procedure CancelChangesExecute(Sender: TObject);
94	procedure CountriesBeforeOpen(DataSet: TDataSet);
95	procedure DeleteEmployeeExecute(Sender: TObject);
96	procedure EditEmployeeExecute(Sender: TObject);
97	procedure EditEmployeeUpdate(Sender: TObject);
98	procedure EmployeesAfterInsert(DataSet: TDataSet);
99	procedure EmployeesAfterOpen(DataSet: TDataSet);
100	procedure EmployeesAfterScroll(DataSet: TDataSet);
101	procedure EmployeesBeforeClose(DataSet: TDataSet);
102	procedure EmployeesBeforeOpen(DataSet: TDataSet);
103	procedure EmployeesJOB_CODEChange(Sender: TField);
104	procedure EmployeesJOB_GRADEChange(Sender: TField);
105	procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
106	procedure FormShow(Sender: TObject);
107	procedure EmployeesAfterDelete(DataSet: TDataSet);
108	procedure EmployeesAfterTransactionEnd(Sender: TObject);
109	procedure EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
110	var DataAction: TDataAction);
111	procedure EmployeesSALARYGetText(Sender: TField; var aText: string;
112	DisplayText: Boolean);
113	procedure JobCodesBeforeOpen(DataSet: TDataSet);
114	procedure SaveChangesExecute(Sender: TObject);
115	procedure SaveChangesUpdate(Sender: TObject);
116	private
117	{ private declarations }
118	FDirty: boolean;
119	FClosing: boolean;
120	procedure Reopen(Data: PtrInt);
121	public
122	{ public declarations }
123	end;
124
125	var
126	Form1: TForm1;
127
128	implementation
129
130	{$R *.lfm}
131
132	uses IB, Unit2;
133
134	function ExtractDBException(msg: string): string;
135	var Lines: TStringList;
136	begin
137	Lines := TStringList.Create;
138	try
139	Lines.Text := msg;
140	if pos('exception',Lines[0]) = 1 then
141	Result := Lines[2]
142	else
143	Result := msg
144	finally
145	Lines.Free
146	end;
147	end;
148
149	{ TForm1 }
150
151	procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string;
152	DisplayText: Boolean);
153	begin
154	if DisplayText then
155	begin
156	if Sender.IsNUll then
157	aText := ''
158	else
159	aText := FormatFloat('$#,##0.00',Sender.AsFloat)
160	end
161	else
162	aText := Sender.AsString
163	end;
164
165	procedure TForm1.JobCodesBeforeOpen(DataSet: TDataSet);
166	begin
167	JobCodes.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
168	JobCodes.ParamByName('JOB_COUNTRY').AsString := EmployeesJOB_COUNTRY.AsString
169	end;
170
171	procedure TForm1.SaveChangesExecute(Sender: TObject);
172	begin
173	Employees.Transaction.Commit
174	end;
175
176	procedure TForm1.SaveChangesUpdate(Sender: TObject);
177	begin
178	(Sender as TAction).Enabled := FDirty
179	end;
180
181	procedure TForm1.Reopen(Data: PtrInt);
182	begin
183	with IBTransaction1 do
184	if not InTransaction then StartTransaction;
185	Countries.Active := true;
186	Employees.Active := true;
187	JobCodes.Active := true;
188	Depts.Active := true;
189	end;
190
191	procedure TForm1.AddEmployeeExecute(Sender: TObject);
192	begin
193	Employees.Append
194	end;
195
196	procedure TForm1.SelectDeptExecute(Sender: TObject);
197	var Dept_No: string;
198	begin
199	if SelectDeptDlg.ShowModal(EmployeesDEPT_KEY_PATH.AsString,Dept_No) = mrOK then
200	begin
201	Employees.Edit;
202	EmployeesDEPT_NO.AsString := Dept_No;
203	try
204	Employees.Post;
205	except
206	Employees.Cancel;
207	raise;
208	end;
209	IBDynamicGrid1.ShowEditorPanel;
210	end;
211	end;
212
213	procedure TForm1.EmployeesAfterPost(DataSet: TDataSet);
214	begin
215	Employees.Refresh
216	end;
217
218	procedure TForm1.JobGradeDBComboBoxCloseUp(Sender: TObject);
219	begin
220	JobGradeDBComboBox.EditingDone; //See http://bugs.freepascal.org/view.php?id=27186
221	end;
222
223	procedure TForm1.BeforeDateChange(Sender: TObject);
224	begin
225	Employees.Active := false;
226	Employees.Active := true
227	end;
228
229	procedure TForm1.CancelChangesExecute(Sender: TObject);
230	begin
231	Employees.Transaction.Rollback
232	end;
233
234	procedure TForm1.CountriesBeforeOpen(DataSet: TDataSet);
235	begin
236	Countries.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
237	Countries.ParamByName('JOB_CODE').AsString := EmployeesJOB_CODE.AsString
238	end;
239
240	procedure TForm1.DeleteEmployeeExecute(Sender: TObject);
241	begin
242	if MessageDlg(
243	Format('Remove %s from Employee List?',[Employees.FieldByName('Full_Name').AsString]),
244	mtConfirmation,[mbYes,mbNo],0) = mrYes then
245	Employees.Delete
246	end;
247
248	procedure TForm1.EditEmployeeExecute(Sender: TObject);
249	begin
250	IBDynamicGrid1.ShowEditorPanel;
251	end;
252
253	procedure TForm1.EditEmployeeUpdate(Sender: TObject);
254	begin
255	(Sender as TAction).Enabled := Employees.Active and (Employees.RecordCount > 0)
256	end;
257
258	procedure TForm1.EmployeesAfterInsert(DataSet: TDataSet);
259	begin
260	EmployeesJOB_COUNTRY.AsString := 'USA';
261	EmployeesJOB_CODE.AsString := 'SRep';
262	EmployeesJOB_GRADE.AsInteger := 4;
263	EmployeesSALARY.AsCurrency := 20000;
264	EmployeesFIRST_NAME.AsString := '<no name>';
265	EmployeesLAST_NAME.AsString := '<no name>';
266	EmployeesHIRE_DATE.AsDateTime := now;
267	EmployeesDEPT_NO.AsString := '000';
268	FDirty := true;
269	end;
270
271	procedure TForm1.EmployeesAfterOpen(DataSet: TDataSet);
272	begin
273	TotalsQuery.Active := true
274	end;
275
276	procedure TForm1.EmployeesAfterScroll(DataSet: TDataSet);
277	begin
278	Countries.Active := false;
279	JobCodes.Active := false;
280	Countries.Active := true;
281	JobCodes.Active := true;
282	end;
283
284	procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
285	begin
286	with DataSet do
287	if State in [dsInsert,dsEdit] then
288	try
289	Post;
290	except
291	Cancel;
292	raise;
293	end;
294	TotalsQuery.Active := false
295	end;
296
297	procedure TForm1.EmployeesBeforeOpen(DataSet: TDataSet);
298	begin
299	if BeforeDate.Date > 0 then
300	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE < :BeforeDate');
301	if AfterDate.Date > 0 then
302	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE > :AfterDate');
303
304	case SalaryRange.ItemIndex of
305	1:
306	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary < 40000');
307	2:
308	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 40000 and Salary < 100000');
309	3:
310	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 100000');
311	end;
312
313
314
315	{Parameter value must be set after all SQL changes have been made}
316	if BeforeDate.Date > 0 then
317	(DataSet as TIBParserDataSet).ParamByName('BeforeDate').AsDateTime := BeforeDate.Date;
318	if AfterDate.Date > 0 then
319	(DataSet as TIBParserDataSet).ParamByName('AfterDate').AsDateTime := AfterDate.Date;
320
321	end;
322
323	procedure TForm1.EmployeesJOB_CODEChange(Sender: TField);
324	begin
325	Countries.Active := false;
326	Countries.Active := true;
327	end;
328
329	procedure TForm1.EmployeesJOB_GRADEChange(Sender: TField);
330	begin
331	Countries.Active := false;
332	JobCodes.Active := false;
333	Countries.Active := true;
334	JobCodes.Active := true;
335	end;
336
337	procedure TForm1.FormClose(Sender: TObject; var CloseAction: TCloseAction);
338	begin
339	FClosing := true;
340	if IBTransaction1.InTransaction then
341	IBTransaction1.Commit;
342	end;
343
344	procedure TForm1.FormShow(Sender: TObject);
345	begin
346	repeat
347	try
348	IBDatabase1.Connected := true;
349	except
350	on E:EIBClientError do
351	begin
352	Close;
353	Exit
354	end;
355	On E:Exception do
356	MessageDlg(E.Message,mtError,[mbOK],0);
357	end;
358	until IBDatabase1.Connected;
359	Reopen(0);
360	end;
361
362	procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet);
363	begin
364	FDirty := true
365	end;
366
367	procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject);
368	begin
369	FDirty := false;
370	if not FClosing then
371	Application.QueueAsyncCall(@Reopen,0)
372	end;
373
374	procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
375	var DataAction: TDataAction);
376	begin
377	if E is EIBError then
378	begin
379	MessageDlg(ExtractDBException(EIBError(E).message),mtError,[mbOK],0);
380	DataSet.Cancel;
381	DataAction := daAbort
382	end;
383	end;
384
385	end.
386