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Controle de Transaction Firedac #76

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Controle de Transaction Firedac #76

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1 change: 1 addition & 0 deletions SimpleInterface.pas
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Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,7 @@ interface
function DataSet : TDataSet;
function Open(aSQL : String) : iSimpleQuery; overload;
function Open : iSimpleQuery; overload;
function &EndTransaction: iSimpleQuery;
end;


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58 changes: 41 additions & 17 deletions SimpleQueryFiredac.pas
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Original file line number Diff line number Diff line change
Expand Up @@ -9,20 +9,22 @@ interface

Type
TSimpleQueryFiredac = class(TInterfacedObject, iSimpleQuery)
private
FConnection : TFDConnection;
FQuery : TFDQuery;
FParams : TParams;
public
constructor Create(aConnection : TFDConnection);
destructor Destroy; override;
class function New(aConnection : TFDConnection) : iSimpleQuery;
function SQL : TStrings;
function Params : TParams;
function ExecSQL : iSimpleQuery;
function DataSet : TDataSet;
function Open(aSQL : String) : iSimpleQuery; overload;
function Open : iSimpleQuery; overload;
private
FConnection: TFDConnection;
FTransaction: TFDTransaction;
FQuery: TFDQuery;
FParams: TParams;
public
constructor Create(aConnection: TFDConnection);
destructor Destroy; override;
class function New(aConnection: TFDConnection): iSimpleQuery;
function SQL: TStrings;
function Params: TParams;
function ExecSQL: iSimpleQuery;
function DataSet: TDataSet;
function Open(aSQL: String): iSimpleQuery; overload;
function Open: iSimpleQuery; overload;
function &EndTransaction: iSimpleQuery;
end;

implementation
Expand All @@ -32,11 +34,20 @@ implementation

{ TSimpleQuery<T> }

constructor TSimpleQueryFiredac.Create(aConnection : TFDConnection);
constructor TSimpleQueryFiredac.Create(aConnection: TFDConnection);
begin
FQuery := TFDQuery.Create(nil);
FConnection := aConnection;
FQuery.Connection := FConnection;

FTransaction := TFDTransaction.Create(nil);
FTransaction.Connection := FConnection;

FQuery.Transaction := FTransaction;

if FTransaction.Active then
FTransaction.Commit;
FTransaction.StartTransaction;
end;

function TSimpleQueryFiredac.DataSet: TDataSet;
Expand All @@ -46,26 +57,39 @@ function TSimpleQueryFiredac.DataSet: TDataSet;

destructor TSimpleQueryFiredac.Destroy;
begin
FreeAndNil(FTransaction);
FreeAndNil(FQuery);
if Assigned(FParams) then
FreeAndNil(FParams);
inherited;
end;

function TSimpleQueryFiredac.EndTransaction: iSimpleQuery;
begin
if FTransaction.Active then
FTransaction.Commit;
end;

function TSimpleQueryFiredac.ExecSQL: iSimpleQuery;
begin
Result := Self;
if Assigned(FParams) then
FQuery.Params.Assign(FParams);

FQuery.Prepare;
FQuery.ExecSQL;

try
FQuery.ExecSQL;
except
FTransaction.Rollback;
end;

if Assigned(FParams) then
FreeAndNil(FParams);
end;

class function TSimpleQueryFiredac.New(aConnection : TFDConnection): iSimpleQuery;
class function TSimpleQueryFiredac.New(aConnection: TFDConnection)
: iSimpleQuery;
begin
Result := Self.Create(aConnection);
end;
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