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unit MemDSToolsUnit;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, toolsunit,
db,
Memds;
type
{ TMemDSConnector }
TMemDSDBConnector = class(TDBConnector)
protected
procedure CreateNDatasets; override;
procedure CreateFieldDataset; override;
procedure DropNDatasets; override;
procedure DropFieldDataset; override;
Function InternalGetNDataset(n : integer) : TDataset; override;
Function InternalGetFieldDataset : TDataSet; override;
end;
implementation
uses
StrUtils, FmtBCD;
{ TMemDSDBConnector }
procedure TMemDSDBConnector.CreateNDatasets;
begin
// All datasets only exist in memory, so nothing has to be done
end;
procedure TMemDSDBConnector.CreateFieldDataset;
begin
// All datasets only exist in memory, so nothing has to be done
end;
procedure TMemDSDBConnector.DropNDatasets;
begin
// All datasets only exist in memory, so nothing has to be done
end;
procedure TMemDSDBConnector.DropFieldDataset;
begin
// All datasets only exist in memory, so nothing has to be done
end;
function TMemDSDBConnector.InternalGetNDataset(n: integer): TDataset;
var MemDS : TMemDataset;
i : integer;
begin
MemDs := TMemDataset.Create(nil);
MemDS.Name := 'NDataset';
MemDS.FieldDefs.Add('ID',ftInteger);
MemDS.FieldDefs.Add('NAME',ftString,50);
MemDS.CreateTable;
MemDS.Open;
for i := 1 to n do
begin
memds.Append;
memds.FieldByName('ID').AsInteger := i;
memds.FieldByName('NAME').AsString := 'TestName' + inttostr(i);
MemDS.Post;
end;
MemDS.Close;
Result := MemDS;
end;
function TMemDSDBConnector.InternalGetFieldDataset : TDataSet;
var MemDS : TMemDataset;
i : integer;
begin
// Values >= 24:00:00.000 can't be handled by StrToTime function
testTimeValues[2] := '23:59:59.000';
testTimeValues[3] := '23:59:59.003';
MemDs := TMemDataset.Create(nil);
with MemDS do
begin
Name := 'FieldDataset';
FieldDefs.Add('ID',ftInteger);
FieldDefs.Add('FSTRING',ftString,10);
FieldDefs.Add('FSMALLINT',ftSmallint);
FieldDefs.Add('FINTEGER',ftInteger);
FieldDefs.Add('FWORD',ftWord);
FieldDefs.Add('FBOOLEAN',ftBoolean);
FieldDefs.Add('FFLOAT',ftFloat);
FieldDefs.Add('FCURRENCY',ftCurrency);
FieldDefs.Add('FBCD',ftBCD);
FieldDefs.Add('FDATE',ftDate);
FieldDefs.Add('FTIME',ftTime);
FieldDefs.Add('FDATETIME',ftDateTime);
FieldDefs.Add('FFIXEDCHAR',ftFixedChar,10);
FieldDefs.Add('FLARGEINT',ftLargeint);
FieldDefs.Add('FFMTBCD',ftFmtBCD);
CreateTable;
Open;
for i := 0 to testValuesCount-1 do
begin
Append;
FieldByName('ID').AsInteger := i;
FieldByName('FSTRING').AsString := testStringValues[i];
FieldByName('FSMALLINT').AsInteger := testSmallIntValues[i];
FieldByName('FINTEGER').AsInteger := testIntValues[i];
FieldByName('FWORD').AsInteger := testWordValues[i];
FieldByName('FBOOLEAN').AsBoolean := testBooleanValues[i];
FieldByName('FFLOAT').AsFloat := testFloatValues[i];
FieldByName('FCURRENCY').AsCurrency := testCurrencyValues[i];
FieldByName('FBCD').AsCurrency := testCurrencyValues[i];
FieldByName('FDATE').AsDateTime := StrToDateTime(testDateValues[i], Self.FormatSettings);
FieldByName('FTIME').AsDateTime := StrToTime(testTimeValues[i], Self.FormatSettings);
FieldByName('FDATETIME').AsDateTime := StrToDateTime(testValues[ftDateTime,i], Self.FormatSettings);
FieldByName('FFIXEDCHAR').AsString := PadRight(testStringValues[i], 10);
FieldByName('FLARGEINT').AsLargeInt := testLargeIntValues[i];
FieldByName('FFMTBCD').AsBCD := StrToBCD(testFmtBCDValues[i], Self.FormatSettings);
Post;
end;
Close;
end;
Result := MemDS;
end;
initialization
RegisterClass(TMemDSDBConnector);
end.
|
