| 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 |
{$IFNDEF LOCALDATABASE} |
| 100 |
IBDatabase1.DatabaseName := sDatabaseName |
| 101 |
{$ENDIF} |
| 102 |
end; |
| 103 |
|
| 104 |
procedure TForm1.IBDatabase1AfterConnect(Sender: TObject); |
| 105 |
begin |
| 106 |
IBDataSet1.Active := true; |
| 107 |
end; |
| 108 |
|
| 109 |
const |
| 110 |
sqlCreateTable = |
| 111 |
'Create Table TestData ('+ |
| 112 |
'RowID Integer not null,'+ |
| 113 |
'Title VarChar(32) Character Set UTF8,'+ |
| 114 |
'MyArray VarChar(16) [0:16, -1:7] Character Set UTF8,'+ |
| 115 |
'Primary Key(RowID)'+ |
| 116 |
')'; |
| 117 |
|
| 118 |
sqlCreateGenerator = 'Create Generator ROWNUMBER'; |
| 119 |
sqlSetGenerator = 'Set Generator ROWNUMBER to '; |
| 120 |
|
| 121 |
sqlInsert = 'Insert into TestData(RowID,Title) Values(:RowID,:Title)'; |
| 122 |
|
| 123 |
sqlUpdate = 'Update TestData Set MyArray = ? Where RowID = ?'; |
| 124 |
|
| 125 |
procedure TForm1.IBDatabase1CreateDatabase(Sender: TObject); |
| 126 |
var Transaction: ITransaction; |
| 127 |
Statement: IStatement; |
| 128 |
ResultSet: IResultSet; |
| 129 |
row, i,j,k : integer; |
| 130 |
ar: IArray; |
| 131 |
c: char; |
| 132 |
begin |
| 133 |
with IBDatabase1.Attachment do |
| 134 |
begin |
| 135 |
ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateTable); {Create the table} |
| 136 |
ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateGenerator); {Create the table} |
| 137 |
{Now Populate it} |
| 138 |
Transaction := StartTransaction([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],taCommit); |
| 139 |
Statement := Prepare(Transaction,'Select * from TestData'); |
| 140 |
for row := 1 to 3 do |
| 141 |
begin |
| 142 |
Statement := PrepareWithNamedParameters(Transaction,sqlInsert); |
| 143 |
with Statement.GetSQLParams do |
| 144 |
begin |
| 145 |
ByName('rowid').AsInteger := row; |
| 146 |
ByName('title').AsString := 'Row ' + IntToStr(row); |
| 147 |
end; |
| 148 |
Statement.Execute; |
| 149 |
|
| 150 |
Statement := Prepare(Transaction,sqlUpdate); |
| 151 |
if row > 2 then continue; |
| 152 |
ar := CreateArray(Transaction,'TestData','MyArray'); |
| 153 |
if ar <> nil then |
| 154 |
begin |
| 155 |
k := 0; |
| 156 |
c := chr(ord('A') + row - 1); |
| 157 |
for i := 0 to 16 do |
| 158 |
for j := -1 to 7 do |
| 159 |
begin |
| 160 |
ar.SetAsString([i,j],c + IntToStr(k)); |
| 161 |
Inc(k); |
| 162 |
end; |
| 163 |
Statement.SQLParams[0].AsArray := ar; |
| 164 |
Statement.SQLParams[1].AsInteger := row; |
| 165 |
Statement.Execute; |
| 166 |
end; |
| 167 |
end; |
| 168 |
ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlSetGenerator + '4'); {update the generator} |
| 169 |
end; |
| 170 |
end; |
| 171 |
|
| 172 |
end. |
| 173 |
|
