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UniDaProv.pas
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UniDaProv.pas
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{==============================================================================|
| Project : OnLine Data Process Component |
|==============================================================================|
| Copyright (c)2010-2011, Yang JiXian |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| Redistributions of source code must retain the above copyright notice, this |
| list of conditions and the following disclaimer. |
| |
| Redistributions in binary form must reproduce the above copyright notice, |
| this list of conditions and the following disclaimer in the documentation |
| and/or other materials provided with the distribution. |
| |
| Neither the name of Yang JiXian nor the names of its contributors may |
| be used to endorse or promote products derived from this software without |
| specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR |
| ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| DAMAGE. |
|==============================================================================|
| The Initial Developer of the Original Code is Yang JiXian (PRC). |
| Portions created by Yang JiXian are Copyright (c)1999-2011. |
| All Rights Reserved. |
|==============================================================================|
| Contributor(s): |
|==============================================================================}
unit UniDaProv;
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
interface
uses DataProcUtils, ServerProc, SysUtils, Classes, DB, SyncObjs,
{$IFDEF MSWINDOWS}Windows, {$ELSE}DynLibs, {$ENDIF}MD5, StrUtils,
Uni, MemDS, UniProvider, OracleUniProvider, DAScript, UniScript;
type
TUniDaCustomQuery = class(TServerSockQuery)
private
public
StoredProcName: string;
procedure Reconnect; override;
function ExecSQL: integer; override;
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function ParamByName(ParamStr: DataString): TParam; override;
function Open: boolean; override;
function SuperOpen: boolean; override;
procedure Close; override;
function SuperExecSQL: integer; override;
function ExecScript: integer; override;
function ExecStoredProc: string; override;
procedure StartTransaction; override;
procedure Commit; override;
procedure RollBack; override;
procedure InitializeStoredProc; override;
published
end;
TUniDaSQLQuery = class(TUniDaCustomQuery)
private
FConnection: TUniConnection;
procedure SetConnection(Value: TUniConnection);
public
function Open: boolean; override;
function SuperOpen: boolean; override;
procedure Close; override;
function SuperExecSQL: integer; override;
function ExecSQL: integer; override;
function ParamByName(ParamStr: DataString): TParam; override;
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Reconnect; override;
procedure StartTransaction; override;
procedure Commit; override;
procedure RollBack; override;
published
property DBConnection: TUniConnection read FConnection write SetConnection;
end;
TUniDaScriptQuery = class(TUniDaCustomQuery)
private
FConnection: TUniConnection;
procedure SetConnection(Value: TUniConnection);
public
function Open: boolean; override;
function SuperOpen: boolean; override;
procedure Close; override;
function SuperExecSQL: integer; override;
function ExecSQL: integer; override;
function ExecScript: integer; override;
function ParamByName(ParamStr: DataString): TParam; override;
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Reconnect; override;
procedure StartTransaction; override;
procedure Commit; override;
procedure RollBack; override;
published
property DBConnection: TUniConnection read FConnection write SetConnection;
end;
TUniDaStoredProcQuery = class(TUniDaCustomQuery)
private
FConnection: TUniConnection;
procedure SetConnection(Value: TUniConnection);
public
function Open: boolean; override;
function SuperOpen: boolean; override;
procedure Close; override;
function SuperExecSQL: integer; override;
function ExecSQL: integer; override;
function ParamByName(ParamStr: DataString): TParam; override;
function ExecStoredProc: string; override;
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Reconnect; override;
procedure StartTransaction; override;
procedure Commit; override;
procedure RollBack; override;
procedure CreateDBParam(DataType: TFieldType; ParamName: string; ParamType: TParamType); override;
procedure ClearParam;
procedure InitializeStoredProc; override;
published
property DBConnection: TUniConnection read FConnection write SetConnection;
end;
implementation
constructor TUniDaCustomQuery.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
end;
destructor TUniDaCustomQuery.Destroy;
begin
inherited Destroy;
end;
function TUniDaCustomQuery.Open: boolean;
begin
inherited Open;
Result := False;
end;
function TUniDaCustomQuery.SuperOpen: boolean;
begin
inherited SuperOpen;
Result := False;
end;
procedure TUniDaCustomQuery.Close;
begin
inherited Close;
end;
function TUniDaCustomQuery.ParamByName(ParamStr: DataString): TParam;
begin
end;
function TUniDaCustomQuery.ExecSQL: integer;
begin
inherited ExecSQL;
Result := 0;
end;
function TUniDaCustomQuery.SuperExecSQL: integer;
begin
inherited SuperExecSQL;
Result := 0;
end;
procedure TUniDaCustomQuery.Reconnect;
begin
end;
function TUniDaCustomQuery.ExecScript: integer;
begin
end;
function TUniDaCustomQuery.ExecStoredProc: string;
begin
end;
procedure TUniDaCustomQuery.StartTransaction;
begin
end;
procedure TUniDaCustomQuery.Commit;
begin
end;
procedure TUniDaCustomQuery.RollBack;
begin
end;
procedure TUniDaCustomQuery.InitializeStoredProc;
begin
inherited;
end;
procedure TUniDaSQLQuery.SetConnection(Value: TUniConnection);
begin
FConnection := Value;
TUniQuery(NetData).Connection := Value;
end;
function TUniDaSQLQuery.Open: boolean;
begin
Result := False;
inherited Open;
try
TUniQuery(NetData).Close;
TUniQuery(NetData).SQL := Self.SQL;
TUniQuery(NetData).Open;
except
if Assigned(FConnection) then
TUniQuery(NetData).Connection.Disconnect;
end;
Result := True;
end;
function TUniDaSQLQuery.SuperOpen: boolean;
begin
inherited SuperOpen;
Result := False;
try
TUniQuery(NetData).Close;
TUniQuery(NetData).SQL := Self.SQL;
TUniQuery(NetData).Open;
Result := True;
except
if Assigned(FConnection) then
TUniQuery(NetData).Connection.Disconnect;
end;
end;
procedure TUniDaSQLQuery.Close;
begin
inherited Close;
TUniQuery(NetData).Close;
end;
function TUniDaSQLQuery.SuperExecSQL: integer;
begin
inherited SuperExecSQL;
Result := 0;
try
TUniQuery(NetData).SQL := Self.SQL;
TUniQuery(NetData).ExecSQL;
RowsAffected := TUniQuery(NetData).RowsAffected;
except
if Assigned(FConnection) then
TUniQuery(NetData).Connection.Disconnect;
end;
Result := RowsAffected;
end;
function TUniDaSQLQuery.ExecSQL: integer;
var
TName: DataString;
begin
inherited ExecSQL;
Result := 0;
try
TUniQuery(NetData).SQL := Self.SQL;
TUniQuery(NetData).ExecSQL;
RowsAffected := TUniQuery(NetData).RowsAffected;
except
if Assigned(FConnection) then
TUniQuery(NetData).Connection.Disconnect;
end;
Result := RowsAffected;
end;
function TUniDaSQLQuery.ParamByName(ParamStr: DataString): TParam;
begin
inherited ParamByName(ParamStr);
Result := nil;
try
Result := TUniQuery(NetData).ParamByName(ParamStr);
except
if Assigned(FConnection) then
TUniQuery(NetData).Connection.Disconnect;
end;
end;
procedure TUniDaSQLQuery.Reconnect;
begin
if Assigned(FConnection) then
TUniQuery(NetData).Connection.Connected := False;
end;
procedure TUniDaSQLQuery.StartTransaction;
begin
if Assigned(FConnection) then
TUniQuery(NetData).Connection.StartTransaction;
end;
procedure TUniDaSQLQuery.Commit;
begin
if Assigned(FConnection) then
TUniQuery(NetData).Connection.Commit;
end;
procedure TUniDaSQLQuery.RollBack;
begin
if Assigned(FConnection) then
TUniQuery(NetData).Connection.Rollback;
end;
constructor TUniDaSQLQuery.Create(AOwner: TComponent);
begin
inherited;
NetData := TUniQuery.Create(nil);
end;
destructor TUniDaSQLQuery.Destroy;
begin
NetData.Free;
inherited;
end;
procedure TUniDaScriptQuery.SetConnection(Value: TUniConnection);
begin
FConnection := Value;
TUniScript(NetComponent).Connection := Value;
end;
function TUniDaScriptQuery.ExecScript: integer;
begin
TUniScript(NetComponent).SQL.Assign(Script);
TUniScript(NetComponent).Execute;
Result := TUniScript(NetComponent).Params.Count;
end;
function TUniDaScriptQuery.Open: boolean;
begin
Result := True;
end;
function TUniDaScriptQuery.SuperOpen: boolean;
begin
Result := True;
end;
procedure TUniDaScriptQuery.Close;
begin
end;
function TUniDaScriptQuery.SuperExecSQL: integer;
begin
Result := 0;
end;
function TUniDaScriptQuery.ExecSQL: integer;
begin
Result := 0;
end;
function TUniDaScriptQuery.ParamByName(ParamStr: DataString): TParam;
begin
end;
procedure TUniDaScriptQuery.Reconnect;
begin
if Assigned(FConnection) then
begin
FConnection.Connected := False;
FConnection.Connect;
end;
end;
procedure TUniDaScriptQuery.StartTransaction;
begin
if Assigned(FConnection) then
TUniScript(NetComponent).Connection.StartTransaction;
end;
procedure TUniDaScriptQuery.Commit;
begin
if Assigned(FConnection) then
TUniScript(NetComponent).Connection.Commit;
end;
procedure TUniDaScriptQuery.RollBack;
begin
if Assigned(FConnection) then
TUniScript(NetComponent).Connection.Rollback;
end;
constructor TUniDaScriptQuery.Create(AOwner: TComponent);
begin
inherited;
NetComponent := TUniScript.Create(nil);
end;
destructor TUniDaScriptQuery.Destroy;
begin
NetComponent.Free;
inherited;
end;
procedure TUniDaStoredProcQuery.SetConnection(Value: TUniConnection);
begin
FConnection := Value;
TUniStoredProc(NetData).Connection := Value;
end;
function TUniDaStoredProcQuery.ExecStoredProc: string;
var i: integer;
begin
TUniStoredProc(NetData).StoredProcName := StoredProcName;
TUniStoredProc(NetData).ExecSQL;
Result := '';
for i := 0 to TUniStoredProc(NetComponent).Params.Count - 1 do
begin
Result := Result + TUniStoredProc(NetComponent).Params[0].AsString;
if (i > 0) and (i < TUniStoredProc(NetComponent).Params.Count - 1) then
Result := Result + ';';
end;
end;
function TUniDaStoredProcQuery.Open: boolean;
begin
Result := True;
end;
function TUniDaStoredProcQuery.SuperOpen: boolean;
begin
Result := True;
end;
procedure TUniDaStoredProcQuery.Close;
begin
inherited Close;
end;
function TUniDaStoredProcQuery.SuperExecSQL: integer;
begin
Result := 0;
end;
function TUniDaStoredProcQuery.ExecSQL: integer;
begin
Result := 0;
end;
function TUniDaStoredProcQuery.ParamByName(ParamStr: DataString): TParam;
begin
try
Result := TUniStoredProc(NetData).ParamByName(ParamStr);
except
TUniStoredProc(NetData).Connection.Disconnect;
end;
end;
procedure TUniDaStoredProcQuery.Reconnect;
begin
if Assigned(FConnection) then
begin
FConnection.Connected := False;
FConnection.Connect;
end;
end;
procedure TUniDaStoredProcQuery.StartTransaction;
begin
if Assigned(FConnection) then
TUniStoredProc(NetData).Connection.StartTransaction;
end;
procedure TUniDaStoredProcQuery.Commit;
begin
if Assigned(FConnection) then
TUniStoredProc(NetData).Connection.Commit;
end;
procedure TUniDaStoredProcQuery.RollBack;
begin
if Assigned(FConnection) then
TUniStoredProc(NetData).Connection.Rollback;
end;
constructor TUniDaStoredProcQuery.Create(AOwner: TComponent);
begin
inherited;
NetData := TUniStoredProc.Create(nil);
//TUniStoredProc(NetData).Params := Params;
end;
destructor TUniDaStoredProcQuery.Destroy;
begin
NetData.Free;
inherited;
end;
procedure TUniDaStoredProcQuery.ClearParam;
begin
TUniStoredProc(NetData).Params.Clear;
end;
procedure TUniDaStoredProcQuery.CreateDBParam(DataType: TFieldType; ParamName: string; ParamType: TParamType);
begin
TUniStoredProc(NetData).Params.CreateParam(DataType, ParamName, ParamType);
end;
procedure TUniDaStoredProcQuery.InitializeStoredProc;
begin
inherited;
//TUniStoredProc(NetData).Params.Assign(Params);
//TUniStoredProc(NetData).Params := Params;
end;
initialization
finalization
end.