| 1 |
(*
|
| 2 |
* IBX For Lazarus (Firebird Express)
|
| 3 |
*
|
| 4 |
* The contents of this file are subject to the Initial Developer's
|
| 5 |
* Public License Version 1.0 (the "License"); you may not use this
|
| 6 |
* file except in compliance with the License. You may obtain a copy
|
| 7 |
* of the License here:
|
| 8 |
*
|
| 9 |
* http://www.firebirdsql.org/index.php?op=doc&id=idpl
|
| 10 |
*
|
| 11 |
* Software distributed under the License is distributed on an "AS
|
| 12 |
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
| 13 |
* implied. See the License for the specific language governing rights
|
| 14 |
* and limitations under the License.
|
| 15 |
*
|
| 16 |
* The Initial Developer of the Original Code is Tony Whyman.
|
| 17 |
*
|
| 18 |
* The Original Code is (C) 2015 Tony Whyman, MWA Software
|
| 19 |
* (http://www.mwasoftware.co.uk).
|
| 20 |
*
|
| 21 |
* All Rights Reserved.
|
| 22 |
*
|
| 23 |
* Contributor(s): ______________________________________.
|
| 24 |
*
|
| 25 |
*)
|
| 26 |
|
| 27 |
unit Unit1;
|
| 28 |
|
| 29 |
{$mode objfpc}{$H+}
|
| 30 |
|
| 31 |
interface
|
| 32 |
|
| 33 |
uses
|
| 34 |
Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, DbCtrls, db,
|
| 35 |
IBArrayGrid, IBDatabase, IBQuery, IBCustomDataSet, IB;
|
| 36 |
|
| 37 |
{$DEFINE LOCALDATABASE}
|
| 38 |
|
| 39 |
const
|
| 40 |
sDatabaseName = '2Dtest.fdb'; {If LOCALDATABASE defined then prepended with
|
| 41 |
path to temp folder}
|
| 42 |
|
| 43 |
{If you want to explicitly define the test database location then undefine
|
| 44 |
LOCALDATABASE and set explicit path e.g.
|
| 45 |
|
| 46 |
sDatabaseName = 'myserver:/databases/test.fdb';
|
| 47 |
}
|
| 48 |
|
| 49 |
type
|
| 50 |
|
| 51 |
{ TForm1 }
|
| 52 |
|
| 53 |
TForm1 = class(TForm)
|
| 54 |
DataSource1: TDataSource;
|
| 55 |
DBEdit1: TDBEdit;
|
| 56 |
DBNavigator1: TDBNavigator;
|
| 57 |
IBArrayGrid1: TIBArrayGrid;
|
| 58 |
IBDatabase1: TIBDatabase;
|
| 59 |
IBDataSet1: TIBDataSet;
|
| 60 |
IBTransaction1: TIBTransaction;
|
| 61 |
procedure FormCreate(Sender: TObject);
|
| 62 |
procedure FormShow(Sender: TObject);
|
| 63 |
procedure IBDatabase1AfterConnect(Sender: TObject);
|
| 64 |
procedure IBDatabase1CreateDatabase(Sender: TObject);
|
| 65 |
private
|
| 66 |
{ private declarations }
|
| 67 |
public
|
| 68 |
{ public declarations }
|
| 69 |
end;
|
| 70 |
|
| 71 |
var
|
| 72 |
Form1: TForm1;
|
| 73 |
|
| 74 |
implementation
|
| 75 |
|
| 76 |
{$R *.lfm}
|
| 77 |
|
| 78 |
{ TForm1 }
|
| 79 |
|
| 80 |
procedure TForm1.FormShow(Sender: TObject);
|
| 81 |
begin
|
| 82 |
repeat
|
| 83 |
try
|
| 84 |
IBDatabase1.Connected := true;
|
| 85 |
except
|
| 86 |
on E:EIBClientError do
|
| 87 |
begin
|
| 88 |
Close;
|
| 89 |
Exit
|
| 90 |
end;
|
| 91 |
On E:Exception do
|
| 92 |
MessageDlg(E.Message,mtError,[mbOK],0);
|
| 93 |
end;
|
| 94 |
until IBDatabase1.Connected;
|
| 95 |
end;
|
| 96 |
|
| 97 |
procedure TForm1.FormCreate(Sender: TObject);
|
| 98 |
begin
|
| 99 |
{$IFDEF LOCALDATABASE}
|
| 100 |
IBDatabase1.DatabaseName := GetTempDir + sDatabaseName
|
| 101 |
{$else}
|
| 102 |
IBDatabase1.DatabaseName := sDatabaseName
|
| 103 |
{$ENDIF}
|
| 104 |
end;
|
| 105 |
|
| 106 |
procedure TForm1.IBDatabase1AfterConnect(Sender: TObject);
|
| 107 |
begin
|
| 108 |
IBDataSet1.Active := true;
|
| 109 |
end;
|
| 110 |
|
| 111 |
const
|
| 112 |
sqlCreateTable =
|
| 113 |
'Create Table TestData ('+
|
| 114 |
'RowID Integer not null,'+
|
| 115 |
'Title VarChar(32) Character Set UTF8,'+
|
| 116 |
'MyArray VarChar(16) [0:16, -1:7] Character Set UTF8,'+
|
| 117 |
'Primary Key(RowID)'+
|
| 118 |
')';
|
| 119 |
|
| 120 |
sqlCreateGenerator = 'Create Generator ROWNUMBER';
|
| 121 |
sqlSetGenerator = 'Set Generator ROWNUMBER to ';
|
| 122 |
|
| 123 |
sqlInsert = 'Insert into TestData(RowID,Title) Values(:RowID,:Title)';
|
| 124 |
|
| 125 |
sqlUpdate = 'Update TestData Set MyArray = ? Where RowID = ?';
|
| 126 |
|
| 127 |
procedure TForm1.IBDatabase1CreateDatabase(Sender: TObject);
|
| 128 |
var Transaction: ITransaction;
|
| 129 |
Statement: IStatement;
|
| 130 |
ResultSet: IResultSet;
|
| 131 |
row, i,j,k : integer;
|
| 132 |
ar: IArray;
|
| 133 |
c: char;
|
| 134 |
begin
|
| 135 |
with IBDatabase1.Attachment do
|
| 136 |
begin
|
| 137 |
ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateTable); {Create the table}
|
| 138 |
ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateGenerator); {Create the table}
|
| 139 |
{Now Populate it}
|
| 140 |
Transaction := StartTransaction([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],taCommit);
|
| 141 |
Statement := Prepare(Transaction,'Select * from TestData');
|
| 142 |
for row := 1 to 3 do
|
| 143 |
begin
|
| 144 |
Statement := PrepareWithNamedParameters(Transaction,sqlInsert);
|
| 145 |
with Statement.GetSQLParams do
|
| 146 |
begin
|
| 147 |
ByName('rowid').AsInteger := row;
|
| 148 |
ByName('title').AsString := 'Row ' + IntToStr(row);
|
| 149 |
end;
|
| 150 |
Statement.Execute;
|
| 151 |
|
| 152 |
Statement := Prepare(Transaction,sqlUpdate);
|
| 153 |
if row > 2 then continue;
|
| 154 |
ar := CreateArray(Transaction,'TestData','MyArray');
|
| 155 |
if ar <> nil then
|
| 156 |
begin
|
| 157 |
k := 0;
|
| 158 |
c := chr(ord('A') + row - 1);
|
| 159 |
for i := 0 to 16 do
|
| 160 |
for j := -1 to 7 do
|
| 161 |
begin
|
| 162 |
ar.SetAsString([i,j],c + IntToStr(k));
|
| 163 |
Inc(k);
|
| 164 |
end;
|
| 165 |
Statement.SQLParams[0].AsArray := ar;
|
| 166 |
Statement.SQLParams[1].AsInteger := row;
|
| 167 |
Statement.Execute;
|
| 168 |
end;
|
| 169 |
end;
|
| 170 |
ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlSetGenerator + '4'); {update the generator}
|
| 171 |
end;
|
| 172 |
end;
|
| 173 |
|
| 174 |
end.
|
| 175 |
|
