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unit Unit1; |
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|
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{$mode objfpc}{$H+} |
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|
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interface |
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|
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uses |
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Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, DBGrids, |
| 9 |
StdCtrls, ActnList, EditBtn, DbCtrls, ExtCtrls, Buttons, IBDatabase, IBQuery, |
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IBCustomDataSet, IBUpdateSQL, IBDynamicGrid, IBLookupComboEditBox, |
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db, DBExtCtrls; |
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|
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type |
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|
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{ TForm1 } |
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|
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TForm1 = class(TForm) |
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DBEdit6: TDBEdit; |
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EmployeesDEPT_KEY_PATH: TIBStringField; |
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EmployeesDEPT_PATH: TIBStringField; |
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IBLookupComboEditBox1: TIBLookupComboEditBox; |
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IBLookupComboEditBox2: TIBLookupComboEditBox; |
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IBQuery1DEPT_NO: TIBStringField; |
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IBQuery1EMP_NO: TSmallintField; |
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IBQuery1FIRST_NAME: TIBStringField; |
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IBQuery1FULL_NAME: TIBStringField; |
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IBQuery1HIRE_DATE: TDateTimeField; |
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IBQuery1JOB_CODE: TIBStringField; |
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IBQuery1JOB_COUNTRY: TIBStringField; |
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IBQuery1JOB_GRADE: TSmallintField; |
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IBQuery1LAST_NAME: TIBStringField; |
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IBQuery1PHONE_EXT: TIBStringField; |
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IBQuery1SALARY: TIBBCDField; |
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SelectDept: TAction; |
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Button4: TButton; |
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Button5: TButton; |
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CancelChanges: TAction; |
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SalaryRange: TComboBox; |
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CountrySource: TDataSource; |
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BeforeDate: TDateEdit; |
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AfterDate: TDateEdit; |
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DeptsSource: TDataSource; |
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Depts: TIBQuery; |
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JobCodeSource: TDataSource; |
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DBEdit1: TDBEdit; |
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DBEdit2: TDBEdit; |
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DBEdit3: TDBEdit; |
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DBEdit4: TDBEdit; |
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DBEdit5: TDBEdit; |
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DBText1: TDBText; |
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Employees: TIBDataSet; |
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EmployeesDEPT_NO: TIBStringField; |
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EmployeesEMP_NO: TSmallintField; |
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EmployeesFIRST_NAME: TIBStringField; |
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EmployeesFULL_NAME: TIBStringField; |
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EmployeesHIRE_DATE: TDateTimeField; |
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EmployeesJOB_CODE: TIBStringField; |
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EmployeesJOB_COUNTRY: TIBStringField; |
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EmployeesJOB_GRADE: TSmallintField; |
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EmployeesLAST_NAME: TIBStringField; |
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EmployeesPHONE_EXT: TIBStringField; |
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EmployeesSALARY: TIBBCDField; |
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IBDateEdit1: TDBDateEdit; |
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IBDynamicGrid1: TIBDynamicGrid; |
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Countries: TIBQuery; |
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JobCodes: TIBQuery; |
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JobGradeDBComboBox: TDBComboBox; |
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Label10: TLabel; |
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Label11: TLabel; |
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Label12: TLabel; |
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Label13: TLabel; |
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Label3: TLabel; |
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Label4: TLabel; |
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Label5: TLabel; |
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Label6: TLabel; |
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Label7: TLabel; |
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Label8: TLabel; |
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Label9: TLabel; |
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Panel1: TPanel; |
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Panel2: TPanel; |
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EmployeeEditorPanel: TPanel; |
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SpeedButton1: TSpeedButton; |
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TotalsQueryTOTALSALARIES: TIBBCDField; |
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TotalsSource: TDataSource; |
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TotalsQuery: TIBQuery; |
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Label1: TLabel; |
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Label2: TLabel; |
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SaveChanges: TAction; |
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DeleteEmployee: TAction; |
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EditEmployee: TAction; |
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AddEmployee: TAction; |
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ActionList1: TActionList; |
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Button1: TButton; |
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Button2: TButton; |
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Button3: TButton; |
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EmployeeSource: TDataSource; |
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IBDatabase1: TIBDatabase; |
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IBTransaction1: TIBTransaction; |
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procedure EmployeesAfterPost(DataSet: TDataSet); |
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procedure EmployeesValidatePost(Sender: TObject; var CancelPost: boolean); |
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procedure JobGradeDBComboBoxCloseUp(Sender: TObject); |
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procedure SelectDeptExecute(Sender: TObject); |
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procedure AddEmployeeExecute(Sender: TObject); |
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procedure BeforeDateChange(Sender: TObject); |
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procedure CancelChangesExecute(Sender: TObject); |
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procedure CountriesBeforeOpen(DataSet: TDataSet); |
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procedure DeleteEmployeeExecute(Sender: TObject); |
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procedure EditEmployeeExecute(Sender: TObject); |
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procedure EditEmployeeUpdate(Sender: TObject); |
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procedure EmployeesAfterInsert(DataSet: TDataSet); |
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procedure EmployeesAfterOpen(DataSet: TDataSet); |
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procedure EmployeesAfterScroll(DataSet: TDataSet); |
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procedure EmployeesBeforeClose(DataSet: TDataSet); |
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procedure EmployeesBeforeOpen(DataSet: TDataSet); |
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procedure EmployeesJOB_CODEChange(Sender: TField); |
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procedure EmployeesJOB_GRADEChange(Sender: TField); |
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procedure FormClose(Sender: TObject; var CloseAction: TCloseAction); |
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procedure FormShow(Sender: TObject); |
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procedure EmployeesAfterDelete(DataSet: TDataSet); |
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procedure EmployeesAfterTransactionEnd(Sender: TObject); |
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procedure EmployeesPostError(DataSet: TDataSet; E: EDatabaseError; |
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var DataAction: TDataAction); |
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procedure EmployeesSALARYGetText(Sender: TField; var aText: string; |
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DisplayText: Boolean); |
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procedure JobCodesBeforeOpen(DataSet: TDataSet); |
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procedure SaveChangesExecute(Sender: TObject); |
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procedure SaveChangesUpdate(Sender: TObject); |
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private |
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{ private declarations } |
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FDirty: boolean; |
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FClosing: boolean; |
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procedure Reopen(Data: PtrInt); |
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public |
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{ public declarations } |
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end; |
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|
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var |
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Form1: TForm1; |
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|
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implementation |
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|
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{$R *.lfm} |
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|
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uses IB, Unit2; |
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|
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const |
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sNoName = '<no name>'; |
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|
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function ExtractDBException(msg: string): string; |
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var Lines: TStringList; |
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begin |
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Lines := TStringList.Create; |
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try |
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Lines.Text := msg; |
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if pos('exception',Lines[0]) = 1 then |
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Result := Lines[2] |
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else |
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Result := msg |
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finally |
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Lines.Free |
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end; |
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end; |
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|
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{ TForm1 } |
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|
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procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string; |
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DisplayText: Boolean); |
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begin |
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if DisplayText then |
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begin |
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if Sender.IsNUll then |
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aText := '' |
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else |
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aText := FormatFloat('$#,##0.00',Sender.AsFloat) |
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end |
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else |
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aText := Sender.AsString |
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end; |
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|
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procedure TForm1.JobCodesBeforeOpen(DataSet: TDataSet); |
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begin |
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JobCodes.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger; |
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JobCodes.ParamByName('JOB_COUNTRY').AsString := EmployeesJOB_COUNTRY.AsString |
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end; |
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|
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procedure TForm1.SaveChangesExecute(Sender: TObject); |
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begin |
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Employees.Transaction.Commit |
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end; |
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|
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procedure TForm1.SaveChangesUpdate(Sender: TObject); |
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begin |
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(Sender as TAction).Enabled := FDirty |
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end; |
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|
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procedure TForm1.Reopen(Data: PtrInt); |
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begin |
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with IBTransaction1 do |
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if not InTransaction then StartTransaction; |
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Countries.Active := true; |
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Employees.Active := true; |
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JobCodes.Active := true; |
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Depts.Active := true; |
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end; |
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|
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procedure TForm1.AddEmployeeExecute(Sender: TObject); |
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begin |
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Employees.Append |
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end; |
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|
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procedure TForm1.SelectDeptExecute(Sender: TObject); |
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var Dept_No: string; |
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begin |
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if SelectDeptDlg.ShowModal(EmployeesDEPT_KEY_PATH.AsString,Dept_No) = mrOK then |
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begin |
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Employees.Edit; |
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EmployeesDEPT_NO.AsString := Dept_No; |
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try |
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Employees.Post; |
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except |
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Employees.Cancel; |
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raise; |
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end; |
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IBDynamicGrid1.ShowEditorPanel; |
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end; |
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end; |
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|
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procedure TForm1.EmployeesAfterPost(DataSet: TDataSet); |
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begin |
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Employees.Refresh |
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end; |
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|
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procedure TForm1.EmployeesValidatePost(Sender: TObject; var CancelPost: boolean |
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); |
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begin |
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{Cancel if no name entered} |
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CancelPost := (EmployeesLAST_NAME.AsString = sNoName) and (EmployeesFIRST_NAME.AsString = sNoName); |
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end; |
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|
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procedure TForm1.JobGradeDBComboBoxCloseUp(Sender: TObject); |
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begin |
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JobGradeDBComboBox.EditingDone; //See http://bugs.freepascal.org/view.php?id=27186 |
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end; |
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|
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procedure TForm1.BeforeDateChange(Sender: TObject); |
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begin |
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Employees.Active := false; |
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Employees.Active := true |
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end; |
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|
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procedure TForm1.CancelChangesExecute(Sender: TObject); |
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begin |
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Employees.Transaction.Rollback |
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end; |
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|
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procedure TForm1.CountriesBeforeOpen(DataSet: TDataSet); |
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begin |
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Countries.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger; |
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Countries.ParamByName('JOB_CODE').AsString := EmployeesJOB_CODE.AsString |
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end; |
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|
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procedure TForm1.DeleteEmployeeExecute(Sender: TObject); |
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begin |
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if MessageDlg( |
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Format('Remove %s from Employee List?',[Employees.FieldByName('Full_Name').AsString]), |
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mtConfirmation,[mbYes,mbNo],0) = mrYes then |
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Employees.Delete |
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end; |
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|
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procedure TForm1.EditEmployeeExecute(Sender: TObject); |
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begin |
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IBDynamicGrid1.ShowEditorPanel; |
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end; |
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|
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procedure TForm1.EditEmployeeUpdate(Sender: TObject); |
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begin |
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(Sender as TAction).Enabled := Employees.Active and (Employees.RecordCount > 0) |
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end; |
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|
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procedure TForm1.EmployeesAfterInsert(DataSet: TDataSet); |
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begin |
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EmployeesJOB_COUNTRY.AsString := 'USA'; |
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EmployeesJOB_CODE.AsString := 'SRep'; |
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EmployeesJOB_GRADE.AsInteger := 4; |
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EmployeesSALARY.AsCurrency := 20000; |
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EmployeesFIRST_NAME.AsString := sNoName; |
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EmployeesLAST_NAME.AsString := sNoName; |
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EmployeesHIRE_DATE.AsDateTime := now; |
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EmployeesDEPT_NO.AsString := '000'; |
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FDirty := true; |
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end; |
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|
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procedure TForm1.EmployeesAfterOpen(DataSet: TDataSet); |
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begin |
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TotalsQuery.Active := true; |
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IBDynamicGrid1.SetFocus; |
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end; |
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|
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procedure TForm1.EmployeesAfterScroll(DataSet: TDataSet); |
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begin |
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Countries.Active := false; |
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JobCodes.Active := false; |
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Countries.Active := true; |
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JobCodes.Active := true; |
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end; |
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|
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procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet); |
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begin |
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TotalsQuery.Active := false |
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end; |
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|
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procedure TForm1.EmployeesBeforeOpen(DataSet: TDataSet); |
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begin |
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if BeforeDate.Date > 0 then |
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE < :BeforeDate'); |
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if AfterDate.Date > 0 then |
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE > :AfterDate'); |
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|
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case SalaryRange.ItemIndex of |
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1: |
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary < 40000'); |
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2: |
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 40000 and Salary < 100000'); |
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3: |
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 100000'); |
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end; |
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|
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|
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|
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{Parameter value must be set after all SQL changes have been made} |
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if BeforeDate.Date > 0 then |
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(DataSet as TIBParserDataSet).ParamByName('BeforeDate').AsDateTime := BeforeDate.Date; |
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if AfterDate.Date > 0 then |
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(DataSet as TIBParserDataSet).ParamByName('AfterDate').AsDateTime := AfterDate.Date; |
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|
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end; |
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|
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procedure TForm1.EmployeesJOB_CODEChange(Sender: TField); |
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begin |
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Countries.Active := false; |
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Countries.Active := true; |
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end; |
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|
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procedure TForm1.EmployeesJOB_GRADEChange(Sender: TField); |
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begin |
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Countries.Active := false; |
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JobCodes.Active := false; |
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Countries.Active := true; |
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JobCodes.Active := true; |
| 350 |
end; |
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|
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procedure TForm1.FormClose(Sender: TObject; var CloseAction: TCloseAction); |
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begin |
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FClosing := true; |
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if IBTransaction1.InTransaction then |
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IBTransaction1.Commit; |
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end; |
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|
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procedure TForm1.FormShow(Sender: TObject); |
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begin |
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repeat |
| 362 |
try |
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IBDatabase1.Connected := true; |
| 364 |
except |
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on E:EIBClientError do |
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begin |
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Close; |
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Exit |
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end; |
| 370 |
On E:Exception do |
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MessageDlg(E.Message,mtError,[mbOK],0); |
| 372 |
end; |
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until IBDatabase1.Connected; |
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Reopen(0); |
| 375 |
end; |
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|
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procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet); |
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begin |
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FDirty := true |
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end; |
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|
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procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject); |
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begin |
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FDirty := false; |
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if not FClosing then |
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Application.QueueAsyncCall(@Reopen,0) |
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end; |
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|
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procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError; |
| 390 |
var DataAction: TDataAction); |
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begin |
| 392 |
if E is EIBError then |
| 393 |
begin |
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MessageDlg(ExtractDBException(EIBError(E).message),mtError,[mbOK],0); |
| 395 |
DataSet.Cancel; |
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DataAction := daAbort |
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end; |
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end; |
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|
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end. |
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|
