Added: Variant support for X2UtPersist (defaults to String, handled explicitly by the XML implementation)

X2UtPersist.pas

@@ -93,12 +93,21 @@ type
 
     procedure DeleteKey(const AName: String); virtual; abstract;
     procedure DeleteSection(const AName: String); virtual; abstract;
+
+
+    { IX2PersistReader2 }
+    function ReadVariant(const AName: string; out AValue: Variant): Boolean; virtual;
+
+
+    { IX2PersistWriter2 }
+    function WriteVariant(const AName: Variant; const AValue: Variant): Boolean; virtual;
   end;
 
 
 implementation
 uses
   SysUtils,
+  Variants,
 
   X2UtStrings;
 
@@ -108,7 +117,8 @@ type
     reference counting to go through this class. }
   TX2PersistSectionFilerProxy = class(TInterfacedObject, IInterface,
                                       IX2PersistFiler, IX2PersistReader,
-                                      IX2PersistWriter)
+                                      IX2PersistWriter, IX2PersistReader2,
+                                      IX2PersistWriter2)
   private
     FFiler:           IX2PersistFiler;
     FSectionCount:    Integer;
@@ -150,6 +160,13 @@ type
 
     procedure DeleteKey(const AName: String);
     procedure DeleteSection(const AName: String);
+
+
+    { IX2PersistReader2 }
+    function ReadVariant(const AName: string; out AValue: Variant): Boolean;
+
+    { IX2PersistWriter2 }
+    function WriteVariant(const AName: Variant; const AValue: Variant): Boolean;
   public
     constructor Create(const AFiler: IX2PersistFiler; const ASection: String);
     destructor Destroy; override;
@@ -319,6 +336,7 @@ var
   stringValue:  String;
   int64Value:   Int64;
   objectProp:   TObject;
+  variantValue: Variant;
 
 begin
   { Only read writable properties }
@@ -363,8 +381,8 @@ begin
       end;
 
     tkVariant:
-      if ReadString(APropInfo^.Name, stringValue) then
+      if ReadVariant(APropInfo^.Name, variantValue) then
-        SetVariantProp(AObject, APropInfo, stringValue);
+        SetVariantProp(AObject, APropInfo, variantValue);
 
     tkInt64:
       if ReadInt64(APropInfo^.Name, int64Value) then
@@ -471,8 +489,7 @@ begin
 
     tkVariant:
       begin
-        stringValue := GetVariantProp(AObject, APropInfo);
+        WriteVariant(APropInfo^.Name, GetVariantProp(AObject, APropInfo));
-        WriteString(APropInfo^.Name, stringValue);
       end;
 
     tkInt64:
@@ -602,6 +619,25 @@ begin
 end;
 
 
+function TX2CustomPersistFiler.ReadVariant(const AName: string; out AValue: Variant): Boolean;
+var
+  stringValue: string;
+
+begin
+  AValue := Unassigned;
+  Result := ReadString(AName, stringValue);
+
+  if Result then
+    AValue := stringValue;
+end;
+
+
+function TX2CustomPersistFiler.WriteVariant(const AName, AValue: Variant): Boolean;
+begin
+  Result := WriteString(AName, AValue);
+end;
+
+
 { TX2PersistSectionFilerProxy }
 constructor TX2PersistSectionFilerProxy.Create(const AFiler: IX2PersistFiler; const ASection: String);
 var
@@ -680,7 +716,7 @@ end;
 procedure TX2PersistSectionFilerProxy.EndSection;
 begin
   if Assigned(Filer) then
-    Filer.EndSection ;
+    Filer.EndSection;
 end;
 
 
@@ -759,6 +795,17 @@ begin
 end;
 
 
+function TX2PersistSectionFilerProxy.ReadVariant(const AName: string; out AValue: Variant): Boolean;
+var
+  reader2: IX2PersistReader2;
+
+begin
+  Result := False;
+  if Assigned(Filer) and Supports(Filer, IX2PersistReader2, reader2) then
+    Result := reader2.ReadVariant(AName, AValue);
+end;
+
+
 procedure TX2PersistSectionFilerProxy.Write(AObject: TObject);
 begin
   if Assigned(Filer) then
@@ -798,6 +845,17 @@ begin
 end;
 
 
+function TX2PersistSectionFilerProxy.WriteVariant(const AName, AValue: Variant): Boolean;
+var
+  writer2: IX2PersistWriter2;
+
+begin
+  Result := False;
+  if Assigned(Filer) and Supports(Filer, IX2PersistWriter2, writer2) then
+    Result := writer2.WriteVariant(AName, AValue);
+end;
+
+
 function TX2PersistSectionFilerProxy.WriteInt64(const AName: String; AValue: Int64): Boolean;
 begin
   Result  := False;

X2UtPersistIntf.pas

@@ -83,6 +83,18 @@ type
   end;
 
 
+  IX2PersistReader2 = interface(IX2PersistReader)
+    ['{50566396-7D47-4975-BD01-465366F9216F}']
+    function ReadVariant(const AName: String; out AValue: Variant): Boolean;
+  end;
+
+
+  IX2PersistWriter2 = interface(IX2PersistWriter)
+    ['{AAC47A18-A5F9-47D3-AF00-A06E1779268C}']
+    function WriteVariant(const AName, AValue: Variant): Boolean;
+  end;
+
+
 implementation
 
 end.

X2UtPersistXML.pas

@@ -38,8 +38,7 @@ type
     FSection:       IXMLSection;
     FSectionStack:  TInterfaceList;
   protected
-    function ReadValue(const AName: string; out AValue: string): Boolean;
+    function GetValue(const AName: string; out AValue: IXMLvalue; AWriting: Boolean): Boolean;
-    function WriteValue(const AName: string; const AValue: string): Boolean;
   public
     function BeginSection(const AName: String): Boolean; override;
     procedure EndSection; override;
@@ -53,6 +52,7 @@ type
     function ReadFloat(const AName: String; out AValue: Extended): Boolean; override;
     function ReadString(const AName: String; out AValue: String): Boolean; override;
     function ReadInt64(const AName: String; out AValue: Int64): Boolean; override;
+    function ReadVariant(const AName: string; out AValue: Variant): Boolean; override;
 
     function ReadStream(const AName: string; AStream: TStream): Boolean; override;
 
@@ -61,9 +61,11 @@ type
     function WriteFloat(const AName: String; AValue: Extended): Boolean; override;
     function WriteString(const AName, AValue: String): Boolean; override;
     function WriteInt64(const AName: String; AValue: Int64): Boolean; override;
+    function WriteVariant(const AName: Variant; const AValue: Variant): Boolean; override;
 
     function WriteStream(const AName: string; AStream: TStream): Boolean; override;
 
+    
     procedure DeleteKey(const AName: string); override;
     procedure DeleteSection(const AName: string); override;
 
@@ -86,14 +88,11 @@ type
 implementation
 uses
   SysUtils,
+  Variants,
 
   X2UtStrings;
   
 
-const
-  RegistrySeparator = '\';
-
-
 { Wrapper functions }
 function ReadFromXML(AObject: TObject; const AFileName: string): Boolean;
 begin
@@ -197,10 +196,10 @@ begin
   begin
     lastItem := Pred(SectionStack.Count);
 
-    if lastItem < 0 then
+    if lastItem > 0 then
-      FSection := Configuration
+      FSection := (SectionStack[Pred(lastItem)] as IXMLSection)
     else
-      FSection := (SectionStack[Pred(lastItem)] as IXMLSection);
+      FSection := Configuration;
 
     SectionStack.Delete(lastItem);
   end;
@@ -227,40 +226,71 @@ begin
 end;
 
 
-function TX2UtPersistXMLFiler.ReadValue(const AName: string; out AValue: string): Boolean;
+function TX2UtPersistXMLFiler.GetValue(const AName: string; out AValue: IXMLvalue; AWriting: Boolean): Boolean;
 var
   valueIndex: Integer;
 
 begin
+  AValue := nil;
   Result := False;
-  AValue := '';
 
   for valueIndex := 0 to Pred(Section.value.Count) do
     if SameText(Section.value[valueIndex].name, AName) then
     begin
-      AValue := Section.value[valueIndex].Text;
+      AValue := Section.value[valueIndex];
       Result := True;
+      Break;
     end;
+
+  if AWriting then
+  begin
+    if not Result then
+    begin
+      AValue := Section.value.Add;
+      AValue.name := AName;
+    end;
+
+    AValue.ChildNodes.Clear;
+    Result := True;
+  end;
 end;
 
 
 function TX2UtPersistXMLFiler.ReadInteger(const AName: String; out AValue: Integer): Boolean;
 var
-  value: string;
+  value: IXMLvalue;
 
 begin
-  AValue  := 0;
+  Result := GetValue(AName, value, False) and (value.Hasinteger);
-  Result  := ReadValue(AName, value) and TryStrToInt(value, AValue);
+  if Result then
+    AValue := value.integer;
 end;
 
 
 function TX2UtPersistXMLFiler.ReadFloat(const AName: String; out AValue: Extended): Boolean;
 var
-  value: string;
+  value: IXMLvalue;
 
 begin
-  AValue  := 0;
+  Result := GetValue(AName, value, False) and (value.Hasfloat);
-  Result  := ReadValue(AName, value) and TryStrToFloat(value, AValue);
+  if Result then
+    AValue := value.float;
+end;
+
+
+function TX2UtPersistXMLFiler.ReadVariant(const AName: string; out AValue: Variant): Boolean;
+var
+  value: IXMLvalue;
+
+begin
+  Result := GetValue(AName, value, False) and (value.Hasvariant);
+  if Result then
+  begin
+    if value.variantIsNil then
+      AValue := Null
+    else
+      AValue := value.variant;
+  end;
 end;
 
 
@@ -272,62 +302,83 @@ end;
 
 function TX2UtPersistXMLFiler.ReadString(const AName: String; out AValue: String): Boolean;
 var
-  value: string;
+  value: IXMLvalue;
 
 begin
-  Result  := ReadValue(AName, value);
+  Result := GetValue(AName, value, False) and (value.Has_string);
+  if Result then
+    AValue := value._string;
 end;
 
 
 function TX2UtPersistXMLFiler.ReadInt64(const AName: String; out AValue: Int64): Boolean;
-var
-  value: string;
-
-begin
-  AValue  := 0;
-  Result  := ReadValue(AName, value) and TryStrToInt64(value, AValue);
-end;
-
-
-function TX2UtPersistXMLFiler.WriteValue(const AName, AValue: string): Boolean;
 var
   value: IXMLvalue;
-  valueIndex: Integer;
 
 begin
-  Result := False;
+  Result := GetValue(AName, value, False) and (value.Hasint64);
-  value := nil;
+  if Result then
-
+    AValue := value.int64;
-  for valueIndex := 0 to Pred(Section.value.Count) do
-    if SameText(Section.value[valueIndex].name, AName) then
-    begin
-      value := Section.value[valueIndex];
-      Break;
-    end;
-
-  if not Assigned(value) then
-  begin
-    value := Section.value.Add;
-    value.name := AName;
-  end;
-
-  if Assigned(value) then
-  begin
-    value.Text := AValue;
-    Result := True;
-  end;
 end;
 
 
 function TX2UtPersistXMLFiler.WriteInteger(const AName: String; AValue: Integer): Boolean;
+var
+  value: IXMLvalue;
+
 begin
-  Result  := WriteValue(AName, IntToStr(AValue));
+  Result := GetValue(AName, value, True);
+  if Result then
+    value.integer := AValue;
 end;
 
 
 function TX2UtPersistXMLFiler.WriteFloat(const AName: String; AValue: Extended): Boolean;
+var
+  value: IXMLvalue;
+
 begin
-  Result  := WriteValue(AName, FloatToStr(AValue));
+  Result := GetValue(AName, value, True);
+  if Result then
+    value.float := AValue;
+end;
+
+
+function TX2UtPersistXMLFiler.WriteString(const AName, AValue: String): Boolean;
+var
+  value: IXMLvalue;
+
+begin
+  Result := GetValue(AName, value, True);
+  if Result then
+    value._string := AValue;
+end;
+
+
+function TX2UtPersistXMLFiler.WriteInt64(const AName: String; AValue: Int64): Boolean;
+var
+  value: IXMLvalue;
+
+begin
+  Result := GetValue(AName, value, True);
+  if Result then
+    value.int64 := AValue;
+end;
+
+
+function TX2UtPersistXMLFiler.WriteVariant(const AName, AValue: Variant): Boolean;
+var
+  value: IXMLvalue;
+
+begin
+  Result := GetValue(AName, value, True);
+  if Result then
+  begin
+    if VarIsNull(AValue) or VarIsClear(AValue) then
+      value.variantIsNil := True
+    else
+      value.variant := AValue;
+  end;
 end;
 
 
@@ -337,18 +388,6 @@ begin
 end;
 
 
-function TX2UtPersistXMLFiler.WriteString(const AName, AValue: String): Boolean;
-begin
-  Result := WriteValue(AName, AValue);
-end;
-
-
-function TX2UtPersistXMLFiler.WriteInt64(const AName: String; AValue: Int64): Boolean;
-begin
-  Result := WriteValue(AName, IntToStr(AValue));
-end;
-
-
 procedure TX2UtPersistXMLFiler.DeleteKey(const AName: string);
 var
   valueIndex: Integer;

X2UtPersistXMLBinding.pas

@@ -1,7 +1,7 @@
 {
   X2Software XML Data Binding
 
-    Generated on:   18-2-2011 15:23:30
+    Generated on:   3-3-2011 12:45:23
     Generated from: P:\test\X2Utils\XSD\PersistXML.xsd
 }
 unit X2UtPersistXMLBinding;
@@ -18,12 +18,12 @@ type
   IXMLSection = interface;
   IXMLvalueList = interface;
   IXMLsectionList = interface;
-  IXMLvalue = interface;
+  IXMLValue = interface;
   IXMLConfiguration = interface;
 
   { Interfaces for PersistXML }
   IXMLSection = interface(IXMLNode)
-    ['{37E1BD74-261B-44DA-BA06-162DBE32160C}']
+    ['{810C68EC-1138-4B89-A164-9F9B03970771}']
     function Getsection: IXMLsectionList;
     function Getvalue: IXMLvalueList;
     function GetHasname: Boolean;
@@ -38,16 +38,16 @@ type
   end;
 
   IXMLvalueList = interface(IXMLNodeCollection)
-    ['{267C86A8-44E3-4532-8ABE-15B1EDBFD78D}']
+    ['{93139658-6A8B-46DE-B7B9-734A6A94762A}']
-    function Get_value(Index: Integer): IXMLvalue;
+    function Get_value(Index: Integer): IXMLValue;
-    function Add: IXMLvalue;
+    function Add: IXMLValue;
-    function Insert(Index: Integer): IXMLvalue;
+    function Insert(Index: Integer): IXMLValue;
 
-    property value[Index: Integer]: IXMLvalue read Get_value; default;
+    property value[Index: Integer]: IXMLValue read Get_value; default;
   end;
 
   IXMLsectionList = interface(IXMLNodeCollection)
-    ['{2C43C489-F92B-4E8F-873F-3825FC294945}']
+    ['{C6BFF503-B4F0-492B-9B60-B97140D59782}']
     function Get_section(Index: Integer): IXMLSection;
     function Add: IXMLSection;
     function Insert(Index: Integer): IXMLSection;
@@ -55,19 +55,47 @@ type
     property section[Index: Integer]: IXMLSection read Get_section; default;
   end;
 
-  IXMLvalue = interface(IXMLNode)
+  IXMLValue = interface(IXMLNode)
-    ['{63A166DE-F145-4A3E-941B-6A937DE0B783}']
+    ['{3F92F545-4FA7-43AD-A623-113BD9100FE2}']
+    function GetHasinteger: Boolean;
+    function Getinteger: Integer;
+    function GetHasfloat: Boolean;
+    function Getfloat: Double;
+    function GetHas_string: Boolean;
+    function Get_string: WideString;
+    function GetHasvariant: Boolean;
+    function GetvariantIsNil: Boolean;
+    function Getvariant: WideString;
+    function GetHasint64: Boolean;
+    function Getint64: Int64;
     function GetHasname: Boolean;
     function Getname: WideString;
 
+    procedure Setinteger(const Value: Integer);
+    procedure Setfloat(const Value: Double);
+    procedure Set_string(const Value: WideString);
+    procedure SetvariantIsNil(const Value: Boolean);
+    procedure Setvariant(const Value: WideString);
+    procedure Setint64(const Value: Int64);
     procedure Setname(const Value: WideString);
 
+    property Hasinteger: Boolean read GetHasinteger;
+    property integer: Integer read Getinteger write Setinteger;
+    property Hasfloat: Boolean read GetHasfloat;
+    property float: Double read Getfloat write Setfloat;
+    property Has_string: Boolean read GetHas_string;
+    property _string: WideString read Get_string write Set_string;
+    property Hasvariant: Boolean read GetHasvariant;
+    property variantIsNil: Boolean read GetvariantIsNil write SetvariantIsNil;
+    property variant: WideString read Getvariant write Setvariant;
+    property Hasint64: Boolean read GetHasint64;
+    property int64: Int64 read Getint64 write Setint64;
     property Hasname: Boolean read GetHasname;
     property name: WideString read Getname write Setname;
   end;
 
   IXMLConfiguration = interface(IXMLSection)
-    ['{81AAD8C2-F976-4203-B9D6-646408E5DE8A}']
+    ['{AE639E63-960C-445F-89D8-53866535F725}']
     procedure XSDValidateDocument;
   end;
 
@@ -92,9 +120,9 @@ type
   public
     procedure AfterConstruction; override;
   protected
-    function Get_value(Index: Integer): IXMLvalue;
+    function Get_value(Index: Integer): IXMLValue;
-    function Add: IXMLvalue;
+    function Add: IXMLValue;
-    function Insert(Index: Integer): IXMLvalue;
+    function Insert(Index: Integer): IXMLValue;
   end;
 
   TXMLsectionList = class(TXMLNodeCollection, IXMLsectionList)
@@ -106,11 +134,28 @@ type
     function Insert(Index: Integer): IXMLSection;
   end;
 
-  TXMLvalue = class(TXMLNode, IXMLvalue)
+  TXMLValue = class(TXMLNode, IXMLValue)
   protected
+    function GetHasinteger: Boolean;
+    function Getinteger: Integer;
+    function GetHasfloat: Boolean;
+    function Getfloat: Double;
+    function GetHas_string: Boolean;
+    function Get_string: WideString;
+    function GetHasvariant: Boolean;
+    function GetvariantIsNil: Boolean;
+    function Getvariant: WideString;
+    function GetHasint64: Boolean;
+    function Getint64: Int64;
     function GetHasname: Boolean;
     function Getname: WideString;
 
+    procedure Setinteger(const Value: Integer);
+    procedure Setfloat(const Value: Double);
+    procedure Set_string(const Value: WideString);
+    procedure SetvariantIsNil(const Value: Boolean);
+    procedure Setvariant(const Value: WideString);
+    procedure Setint64(const Value: Int64);
     procedure Setname(const Value: WideString);
   end;
 
@@ -169,9 +214,9 @@ begin
   RegisterChildNode('section', TXMLSection);
   Fsection := CreateCollection(TXMLsectionList, IXMLSection, 'section') as IXMLsectionList;
   RegisterChildNode('section', TXMLSection);
-  RegisterChildNode('value', TXMLvalue);
+  RegisterChildNode('value', TXMLValue);
-  Fvalue := CreateCollection(TXMLvalueList, IXMLvalue, 'value') as IXMLvalueList;
+  Fvalue := CreateCollection(TXMLvalueList, IXMLValue, 'value') as IXMLvalueList;
-  RegisterChildNode('value', TXMLvalue);
+  RegisterChildNode('value', TXMLValue);
   inherited;
 end;
 
@@ -203,27 +248,27 @@ end;
 
 procedure TXMLvalueList.AfterConstruction;
 begin
-  RegisterChildNode('value', TXMLvalue);
+  RegisterChildNode('value', TXMLValue);
 
   ItemTag := 'value';
-  ItemInterface := IXMLvalue;
+  ItemInterface := IXMLValue;
 
   inherited;
 end;
 
-function TXMLvalueList.Get_value(Index: Integer): IXMLvalue;
+function TXMLvalueList.Get_value(Index: Integer): IXMLValue;
 begin
-  Result := (List[Index] as IXMLvalue);
+  Result := (List[Index] as IXMLValue);
 end;
 
-function TXMLvalueList.Add: IXMLvalue;
+function TXMLvalueList.Add: IXMLValue;
 begin
-  Result := (AddItem(-1) as IXMLvalue);
+  Result := (AddItem(-1) as IXMLValue);
 end;
 
-function TXMLvalueList.Insert(Index: Integer): IXMLvalue;
+function TXMLvalueList.Insert(Index: Integer): IXMLValue;
 begin
-  Result := (AddItem(Index) as IXMLvalue);
+  Result := (AddItem(Index) as IXMLValue);
 end;
 
 procedure TXMLsectionList.AfterConstruction;
@@ -251,18 +296,110 @@ begin
   Result := (AddItem(Index) as IXMLSection);
 end;
 
-function TXMLvalue.GetHasname: Boolean;
+function TXMLValue.GetHasinteger: Boolean;
+begin
+  Result := Assigned(ChildNodes.FindNode('integer'));
+end;
+
+
+function TXMLValue.Getinteger: Integer;
+begin
+  Result := ChildNodes['integer'].NodeValue;
+end;
+
+function TXMLValue.GetHasfloat: Boolean;
+begin
+  Result := Assigned(ChildNodes.FindNode('float'));
+end;
+
+
+function TXMLValue.Getfloat: Double;
+begin
+  Result := XMLToFloat(ChildNodes['float'].NodeValue);
+end;
+
+function TXMLValue.GetHas_string: Boolean;
+begin
+  Result := Assigned(ChildNodes.FindNode('string'));
+end;
+
+
+function TXMLValue.Get_string: WideString;
+begin
+  Result := ChildNodes['string'].Text;
+end;
+
+function TXMLValue.GetHasvariant: Boolean;
+begin
+  Result := Assigned(ChildNodes.FindNode('variant'));
+end;
+
+
+function TXMLValue.GetvariantIsNil: Boolean;
+begin
+  Result := GetNodeIsNil(ChildNodes['variant']);
+end;
+
+
+function TXMLValue.Getvariant: WideString;
+begin
+  Result := ChildNodes['variant'].Text;
+end;
+
+function TXMLValue.GetHasint64: Boolean;
+begin
+  Result := Assigned(ChildNodes.FindNode('int64'));
+end;
+
+
+function TXMLValue.Getint64: Int64;
+begin
+  Result := ChildNodes['int64'].NodeValue;
+end;
+
+function TXMLValue.GetHasname: Boolean;
 begin
   Result := Assigned(AttributeNodes.FindNode('name'));
 end;
 
 
-function TXMLvalue.Getname: WideString;
+function TXMLValue.Getname: WideString;
 begin
   Result := AttributeNodes['name'].Text;
 end;
 
-procedure TXMLvalue.Setname(const Value: WideString);
+procedure TXMLValue.Setinteger(const Value: Integer);
+begin
+  ChildNodes['integer'].NodeValue := Value;
+end;
+
+procedure TXMLValue.Setfloat(const Value: Double);
+begin
+  ChildNodes['float'].NodeValue := FloatToXML(Value);
+end;
+
+procedure TXMLValue.Set_string(const Value: WideString);
+begin
+  ChildNodes['string'].NodeValue := Value;
+end;
+
+procedure TXMLValue.SetvariantIsNil(const Value: Boolean);
+begin
+  SetNodeIsNil(ChildNodes['variant'], Value);
+end;
+
+
+procedure TXMLValue.Setvariant(const Value: WideString);
+begin
+  ChildNodes['variant'].NodeValue := Value;
+end;
+
+procedure TXMLValue.Setint64(const Value: Int64);
+begin
+  ChildNodes['int64'].NodeValue := Value;
+end;
+
+procedure TXMLValue.Setname(const Value: WideString);
 begin
   SetAttribute('name', Value);
 end;

XSD/PersistXML.xsd

@@ -5,16 +5,18 @@
 	<xs:complexType name="Section">
 		<xs:sequence>
 			<xs:element name="section" type="Section" minOccurs="0" maxOccurs="unbounded"/>
-			<xs:element name="value" minOccurs="0" maxOccurs="unbounded">
+			<xs:element name="value" type="Value" minOccurs="0" maxOccurs="unbounded"/>
-				<xs:complexType>
-					<xs:complexContent>
-						<xs:extension base="xs:anyType">
-							<xs:attribute name="name" type="xs:string"/>
-						</xs:extension>
-					</xs:complexContent>
-				</xs:complexType>
-			</xs:element>
 		</xs:sequence>
 		<xs:attribute name="name" type="xs:string"/>
 	</xs:complexType>
+	<xs:complexType name="Value">
+		<xs:choice>
+			<xs:element name="integer" type="xs:int"/>
+			<xs:element name="float" type="xs:float"/>
+			<xs:element name="string" type="xs:string"/>
+			<xs:element name="variant" type="xs:string" nillable="true"/>
+			<xs:element name="int64" type="xs:long"/>
+		</xs:choice>
+		<xs:attribute name="name" type="xs:string"/>
+	</xs:complexType>
 </xs:schema>