Однажды я написал очень простой набор тестов XML.Он обслуживает MSXML (D7 MSXML3?), Omni XML (немного устаревший) и Jedi XML (последняя стабильная версия).
Результаты теста для файла 1,52 МБ:
Загрузка файла XMLвремя MSXML: 240,20 [мс]
выбор узлов XML MSXML: 1,09 [с]
время загрузки файла XML OmniXML: 2,25 [с]
Выбор узлов XML OmniXML: 1,22 [с]
Время загрузки файла XML JclSimpleXML: 2,11 [с]
и нарушение прав доступа для выбора узлов JclSimpleXML: |
К сожалению, на самом деле у меня не так много времени, чтобы исправить выше AV, но сообщения о недостатках содержатся ниже ...
fmuMain.pas
program XmlEngines;
uses
FastMM4,
Forms,
fmuMain in 'fmuMain.pas' {fmMain},
uXmlEngines in 'uXmlEngines.pas',
ifcXmlEngine in 'ifcXmlEngine.pas';
{$R *.res}
begin
Application.Initialize;
Application.Title := 'XML Engine Tester';
Application.CreateForm(TfmMain, fmMain);
Application.Run;
end.
fmuMain.pas
unit fmuMain;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, xmldom, XMLIntf, msxmldom, XMLDoc,
//
ifcXmlEngine, StdCtrls;
type
TfmMain = class(TForm)
mmoDebug: TMemo;
dlgOpen: TOpenDialog;
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure mmoDebugClick(Sender: TObject);
private
fXmlEngines: TInterfaceList;
function Get_Engine(const aIx: Integer): IXmlEngine;
protected
property XmlEngine[const aIx: Integer]: IXmlEngine read Get_Engine;
procedure Debug(const aInfo: string); // inline
public
procedure RegisterXmlEngine(const aEngine: IXmlEngine);
end;
var
fmMain: TfmMain;
implementation
{$R *.dfm}
uses
uXmlEngines, TZTools;
{ TForm1 }
function TfmMain.Get_Engine(const aIx: Integer): IXmlEngine;
begin
Result:= nil;
Supports(fXmlEngines[aIx], IXmlEngine, Result)
end;
procedure TfmMain.RegisterXmlEngine(const aEngine: IXmlEngine);
var
Ix: Integer;
begin
if aEngine = nil then
Exit; // WARRNING: program flow disorder
for Ix:= 0 to Pred(fXmlEngines.Count) do
if XmlEngine[Ix] = aEngine then
Exit; // WARRNING: program flow disorder
fXmlEngines.Add(aEngine)
end;
procedure TfmMain.FormCreate(Sender: TObject);
begin
fXmlEngines:= TInterfaceList.Create();
dlgOpen.InitialDir:= ExtractFileDir(ParamStr(0));
RegisterXmlEngine(TMsxmlEngine.Create(Self));
RegisterXmlEngine(TOmniXmlEngine.Create());
RegisterXmlEngine(TJediXmlEngine.Create());
end;
procedure TfmMain.mmoDebugClick(Sender: TObject);
procedure TestEngines(const aFilename: TFileName);
procedure TestEngine(const aEngine: IXmlEngine);
var
PerfCheck: TPerfCheck;
Ix: Integer;
begin
PerfCheck := TPerfCheck.Create();
try
PerfCheck.Init(True);
PerfCheck.Start();
aEngine.Load(aFilename);
PerfCheck.Pause();
Debug(Format(
'XML file loading time %s: %s',
[aEngine.Get_ID(), PerfCheck.TimeStr()]));
if aEngine.Get_ValidNode() then
begin
PerfCheck.Start();
for Ix:= 0 to 999999 do
if aEngine.Get_ChildsCount() > 0 then
begin
aEngine.SelectChild(Ix mod aEngine.Get_ChildsCount());
end
else
aEngine.SelectRootNode();
PerfCheck.Pause();
Debug(Format(
'XML nodes selections %s: %s',
[aEngine.Get_ID(), PerfCheck.TimeStr()]));
end
finally
PerfCheck.Free();
end
end;
var
Ix: Integer;
begin
Debug(aFilename);
for Ix:= 0 to Pred(fXmlEngines.Count) do
TestEngine(XmlEngine[Ix])
end;
var
CursorBckp: TCursor;
begin
if dlgOpen.Execute() then
begin
CursorBckp:= Cursor;
Self.Cursor:= crHourGlass;
mmoDebug.Cursor:= crHourGlass;
try
TestEngines(dlgOpen.FileName)
finally
Self.Cursor:= CursorBckp;
mmoDebug.Cursor:= CursorBckp;
end
end
end;
procedure TfmMain.Debug(const aInfo: string);
begin
mmoDebug.Lines.Add(aInfo)
end;
procedure TfmMain.FormDestroy(Sender: TObject);
begin
fXmlEngines.Free()
end;
end.
ifcXmlEngine.pas
unit ifcXmlEngine;
interface
uses
SysUtils;
type
TFileName = SysUtils.TFileName;
IXmlEngine = interface
['{AF77333B-9873-4FDE-A3B1-260C7A4D3357}']
procedure Load(const aFilename: TFileName);
procedure SelectRootNode();
procedure SelectChild(const aIndex: Integer);
procedure SelectParent();
//
function Get_ID(): string;
function Get_ValidNode(): Boolean;
function Get_ChildsCount(): Integer;
function Get_HaveParent(): Boolean;
//function Get_NodeName(): Boolean;
end;
implementation
end.
uXmlEngines.pas
unit uXmlEngines;
interface
uses
Classes,
//
XMLDoc, XMLIntf, OmniXml, JclSimpleXml,
//
ifcXmlEngine;
type
TMsxmlEngine = class(TInterfacedObject, IXmlEngine)
private
fXmlDoc: XMLDoc.TXMLDocument;
fNode: XMLIntf.IXMLNode;
protected
public
constructor Create(const aOwner: TComponent);
destructor Destroy; override;
procedure Load(const aFilename: TFileName);
procedure SelectRootNode();
procedure SelectChild(const aIndex: Integer);
procedure SelectParent();
//
function Get_ID(): string;
function Get_ValidNode(): Boolean;
function Get_ChildsCount(): Integer;
function Get_HaveParent(): Boolean;
//function Get_NodeName(): Boolean;
end;
TOmniXmlEngine = class(TInterfacedObject, IXmlEngine)
private
fXmlDoc: OmniXml.IXmlDocument;
fNode: OmniXml.IXMLNode;
protected
public
constructor Create;
destructor Destroy; override;
procedure Load(const aFilename: TFileName);
procedure SelectRootNode();
procedure SelectChild(const aIndex: Integer);
procedure SelectParent();
//
function Get_ID(): string;
function Get_ValidNode(): Boolean;
function Get_ChildsCount(): Integer;
function Get_HaveParent(): Boolean;
//function Get_NodeName(): Boolean;
end;
TJediXmlEngine = class(TInterfacedObject, IXmlEngine)
private
fXmlDoc: TJclSimpleXML;
fNode: TJclSimpleXMLElem;
protected
public
constructor Create();
destructor Destroy(); override;
procedure Load(const aFilename: TFileName);
procedure SelectRootNode();
procedure SelectChild(const aIndex: Integer);
procedure SelectParent();
//
function Get_ID(): string;
function Get_ValidNode(): Boolean;
function Get_ChildsCount(): Integer;
function Get_HaveParent(): Boolean;
//function Get_NodeName(): Boolean;
end;
implementation
uses
SysUtils;
{ TMsxmlEngine }
constructor TMsxmlEngine.Create(const aOwner: TComponent);
begin
if aOwner = nil then
raise Exception.Create('TMsxmlEngine.Create() -> invalid owner');
inherited Create();
fXmlDoc:= XmlDoc.TXmlDocument.Create(aOwner);
fXmlDoc.ParseOptions:= [poPreserveWhiteSpace]
end;
destructor TMsxmlEngine.Destroy;
begin
fXmlDoc.Free();
inherited Destroy()
end;
function TMsxmlEngine.Get_ChildsCount: Integer;
begin
Result:= fNode.ChildNodes.Count
end;
function TMsxmlEngine.Get_HaveParent: Boolean;
begin
Result:= fNode.ParentNode <> nil
end;
function TMsxmlEngine.Get_ID: string;
begin
Result:= 'MSXML'
end;
//function TMsxmlEngine.Get_NodeName: Boolean;
//begin
// Result:= fNode.Text
//end;
function TMsxmlEngine.Get_ValidNode: Boolean;
begin
Result:= fNode <> nil
end;
procedure TMsxmlEngine.Load(const aFilename: TFileName);
begin
fXmlDoc.LoadFromFile(aFilename);
SelectRootNode()
end;
procedure TMsxmlEngine.SelectChild(const aIndex: Integer);
begin
fNode:= fNode.ChildNodes.Get(aIndex)
end;
procedure TMsxmlEngine.SelectParent;
begin
fNode:= fNode.ParentNode
end;
procedure TMsxmlEngine.SelectRootNode;
begin
fNode:= fXmlDoc.DocumentElement
end;
{ TOmniXmlEngine }
constructor TOmniXmlEngine.Create;
begin
inherited Create();
fXmlDoc:= OmniXml.TXMLDocument.Create();
fXmlDoc.PreserveWhiteSpace:= true
end;
destructor TOmniXmlEngine.Destroy;
begin
fXmlDoc:= nil;
inherited Destroy()
end;
function TOmniXmlEngine.Get_ChildsCount: Integer;
begin
Result:= fNode.ChildNodes.Length
end;
function TOmniXmlEngine.Get_HaveParent: Boolean;
begin
Result:= fNode.ParentNode <> nil
end;
function TOmniXmlEngine.Get_ID: string;
begin
Result:= 'OmniXML'
end;
//function TOmniXmlEngine.Get_NodeName: Boolean;
//begin
// Result:= fNode.NodeName
//end;
function TOmniXmlEngine.Get_ValidNode: Boolean;
begin
Result:= fNode <> nil
end;
procedure TOmniXmlEngine.Load(const aFilename: TFileName);
begin
fXmlDoc.Load(aFilename);
SelectRootNode()
end;
procedure TOmniXmlEngine.SelectChild(const aIndex: Integer);
begin
fNode:= fNode.ChildNodes.Item[aIndex]
end;
procedure TOmniXmlEngine.SelectParent;
begin
fNode:= fNode.ParentNode
end;
procedure TOmniXmlEngine.SelectRootNode;
begin
fNode:= fXmlDoc.DocumentElement
end;
{ TJediXmlEngine }
constructor TJediXmlEngine.Create;
begin
inherited Create();
fXmlDoc:= TJclSimpleXML.Create();
end;
destructor TJediXmlEngine.Destroy;
begin
fXmlDoc.Free();
inherited Destroy()
end;
function TJediXmlEngine.Get_ChildsCount: Integer;
begin
Result:= fNode.ChildsCount
end;
function TJediXmlEngine.Get_HaveParent: Boolean;
begin
Result:= fNode.Parent <> nil
end;
function TJediXmlEngine.Get_ID: string;
begin
Result:= 'JclSimpleXML';
end;
//function TJediXmlEngine.Get_NodeName: Boolean;
//begin
// Result:= fNode.Name
//end;
function TJediXmlEngine.Get_ValidNode: Boolean;
begin
Result:= fNode <> nil
end;
procedure TJediXmlEngine.Load(const aFilename: TFileName);
begin
fXmlDoc.LoadFromFile(aFilename);
SelectRootNode()
end;
procedure TJediXmlEngine.SelectChild(const aIndex: Integer);
begin
fNode:= fNode.Items[aIndex]
end;
procedure TJediXmlEngine.SelectParent;
begin
fNode:= fNode.Parent
end;
procedure TJediXmlEngine.SelectRootNode;
begin
fNode:= fXmlDoc.Root
end;
end.