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uRESTDWStorageBin.pas
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1851 lines (1825 loc) · 74.5 KB
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unit uRESTDWStorageBin;
{$I ..\Includes\uRESTDW.inc}
{
REST Dataware .
Criado por XyberX (Gilberto Rocha da Silva), o REST Dataware tem como objetivo o uso de REST/JSON
de maneira simples, em qualquer Compilador Pascal (Delphi, Lazarus e outros...).
O REST Dataware tambem tem por objetivo levar componentes compatíveis entre o Delphi e outros Compiladores
Pascal e com compatibilidade entre sistemas operacionais.
Desenvolvido para ser usado de Maneira RAD, o REST Dataware tem como objetivo principal você usuário que precisa
de produtividade e flexibilidade para produção de Serviços REST/JSON, simplificando o processo para você programador.
Membros do Grupo :
XyberX (Gilberto Rocha) - Admin - Criador e Administrador do pacote.
Alberto Brito - Admin - Administrador do pacote.
Alexandre Abbade - Admin - Administrador do desenvolvimento de DEMOS, coordenador do Grupo.
Anderson Fiori - Admin - Gerencia de Organização dos Projetos
Flávio Motta - Member Tester and DEMO Developer.
Mobius One - Devel, Tester and Admin.
Gustavo - Criptografia and Devel.
Eloy - Devel.
Roniery - Devel.
Fernando Banhos - Refactor Drivers REST Dataware.
}
interface
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
uses
{$IFNDEF RESTDWLAZARUS}{$IFNDEF RESTDWFPC}SqlTimSt, {$ENDIF}{$ENDIF}
Classes, SysUtils, uRESTDWMemoryDataset, FmtBcd, DB, Variants, uRESTDWConsts,
uRESTDWTools{$IFDEF FPC}, uRESTDWBasicTypes{$ENDIF};
Type
TRESTDWStorageBin = Class(TRESTDWStorageBase)
Private
FFieldKind : Array of TFieldKind;
FFieldNames : Array of String;
FFieldSize,
FFieldPrecision : Array of Integer;
FFieldTypes,
FFieldAttrs : TFieldAttrs;
FFieldExists : Array of Boolean;
Procedure SaveRecordToStream (ADataset : TDataset;
Var AStream : TStream);
Procedure LoadRecordFromStream (ADataset : TDataset;
AStream : TStream);
Function SaveRecordDWMemToStream (Dataset : IRESTDWMemTable;
stream : TStream) : Longint;
Procedure LoadRecordDWMemFromStream(Dataset : IRESTDWMemTable;
Stream : TStream);
Public
Procedure SaveDWMemToStream (IDataset : IRESTDWMemTable;
Var AStream : TStream); Override;
Procedure LoadDWMemFromStream (IDataset : IRESTDWMemTable;
AStream : TStream); Override;
Procedure SaveDatasetToStream (ADataset : TDataset;
Var AStream : TStream); Override;
Procedure LoadDatasetFromStream (ADataset : TDataset;
AStream : TStream); Override;
End;
{$IFDEF FPC}
Function DateTimeToSQLTimeStamp(Const DateTime : TDateTime) : TSQLTimeStamp;
Function SQLTimeStampToDateTime(Const DateTime : TSQLTimeStamp) : TDateTime;
{$ENDIF}
Implementation
Uses
uRESTDWProtoTypes,
uRESTDWBufferBase;
{ TRESTDWStorageBin }
{$IFDEF FPC}
Function DateTimeToSQLTimeStamp(Const DateTime : TDateTime) : TSQLTimeStamp;
Var
aFractions : Word;
Begin
DecodeDate(DateTime, Result.Year, Result.Month, Result.Day);
DecodeTime(DateTime, Result.Hour, Result.Minute, Result.Second, aFractions);
Result.Fractions := aFractions;
End;
Function SQLTimeStampToDateTime(Const DateTime : TSQLTimeStamp) : TDateTime;
Function IsSQLTimeStampBlank (Const TimeStamp : TSQLTimeStamp) : Boolean;
Begin
Result := (TimeStamp.Year = 0) And
(TimeStamp.Month = 0) And
(TimeStamp.Day = 0) And
(TimeStamp.Hour = 0) And
(TimeStamp.Minute = 0) And
(TimeStamp.Second = 0) And
(TimeStamp.Fractions = 0);
End;
Begin
If IsSQLTimeStampBlank(DateTime) Then
Result := 0
Else
Begin
Result := EncodeDate(DateTime.Year, DateTime.Month, DateTime.Day);
If Result >= 0 Then
Result := Result + EncodeTime(DateTime.Hour, DateTime.Minute, DateTime.Second, DateTime.Fractions)
Else
Result := Result - EncodeTime(DateTime.Hour, DateTime.Minute, DateTime.Second, DateTime.Fractions);
End;
End;
{$ENDIF}
Procedure TRESTDWStorageBin.LoadDatasetFromStream(ADataset : TDataset;
AStream : TStream);
Var
vFieldKind : TFieldKind;
r, i,
vRecordCount : DWInteger;
vInt,
vFieldsCount : DWInt64;
vString : DWString;
vFieldType : Byte;
vBoolean : Boolean;
vByte : Byte;
vFieldDef : TFieldDef;
vFieldAttrs : Array of Byte;
vField : TField;
Begin
AStream.Position := 0;
// field count
AStream.Read(vFieldsCount,SizeOf(Integer));
SetLength(FFieldKind, vFieldsCount);
SetLength(FFieldTypes, vFieldsCount);
SetLength(vFieldAttrs, vFieldsCount);
SetLength(FFieldNames, vFieldsCount);
SetLength(FFieldSize, vFieldsCount);
SetLength(FFieldPrecision, vFieldsCount);
// encodestr
AStream.Read(vBoolean, Sizeof(vBoolean));
EncodeStrs := vBoolean;
ADataset.Close;
ADataset.FieldDefs.Clear;
For I := 0 To vFieldsCount-1 Do
Begin
// field kind
AStream.Read(vByte, SizeOf(vByte));
FFieldKind[I] := TFieldKind(vByte);
vFieldDef := ADataset.FieldDefs.AddFieldDef;
// fieldname
AStream.Read(vByte, SizeOf(vByte));
SetLength(vString, vByte);
AStream.Read(vString[InitStrPos], vByte);
vFieldDef.Name := vString;
FFieldNames[I] := vString;
// field type
AStream.Read(vFieldType, SizeOf(vFieldType));
vFieldDef.DataType := DWFieldTypeToFieldType(vFieldType);
FFieldTypes[I] := vFieldType;
If vFieldType in [{$IFDEF FPC}45, {$ENDIF}dwftExtended] Then
FFieldTypes[I] := {$IFDEF FPC}Integer(ftFMTBcd){$ELSE}Integer(ftExtended){$ENDIF}
Else
FFieldTypes[I] := vFieldType;
// field size
AStream.Read(vInt, SizeOf(vInt));
If vFieldType = dwftVarBytes Then //Max Array Size
Begin
FFieldTypes[I] := Integer(ftString);
FFieldSize[I] := 255;
vInt := FFieldSize[I];
End
Else
FFieldSize[I] := vInt;
vFieldDef.Size := vInt;
// field precision
AStream.Read(vInt, SizeOf(vInt));
FFieldPrecision[I] := vInt;
If (FFieldTypes[I] In [dwftFloat, dwftCurrency, dwftExtended]) Then
vFieldDef.Precision := FFieldPrecision[I]
Else If (vFieldType In [dwftBCD, dwftFMTBcd]) Then
Begin
{$IFDEF FPC}
vFieldDef.Size := 0;
vFieldDef.Precision := FFieldPrecision[I];
{$ELSE}
vFieldDef.Size := 0;
vFieldDef.Precision := 0;
{$ENDIF}
End;
// field required + provider flag
AStream.Read(vByte, SizeOf(Byte));
vFieldAttrs[I] := vByte;
vFieldDef.Required := vFieldAttrs[I] and 1 > 0;
End;
// provider flags deve ser recolocado depois dos fields criados
For I := 0 To vFieldsCount-1 Do
Begin
vField := ADataset.FindField(FFieldNames[I]);
If vField <> Nil Then
Begin
vField.ProviderFlags := [];
If vFieldAttrs[I] And 2 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfInUpdate];
If vFieldAttrs[I] And 4 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfInWhere];
If vFieldAttrs[I] And 8 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfInKey];
If vFieldAttrs[I] And 16 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfHidden];
{$IFDEF RESTDWLAZARUS}
If vFieldAttrs[I] And 32 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfRefreshOnInsert];
If vFieldAttrs[I] And 64 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfRefreshOnUpdate];
{$ENDIF}
End;
End;
AStream.Read(vRecordCount, SizeOf(vRecordCount));
ADataset.Open;
ADataset.DisableControls;
Try
r := 0;
While r <= vRecordCount Do //Anderson
Begin
ADataset.Append;
LoadRecordFromStream(ADataset, AStream);
ADataset.Post;
Inc(r);
End;
Finally
ADataset.EnableControls;
End;
End;
Procedure TRESTDWStorageBin.LoadDWMemFromStream(IDataset : IRESTDWMemTable;
AStream : TStream);
Procedure CreateFieldDefs(DataSet : TDataSet;
Index : Integer);
Var
vFDef : TFieldDef;
Function FindDef(aName : String) : Boolean;
Var
I : Integer;
Begin
Result := False;
For I := 0 To DataSet.FieldDefs.Count -1 Do
Begin
Result := Lowercase(DataSet.FieldDefs[I].Name) = Lowercase(aName);
If Result Then
Break;
End;
End;
Begin
If Trim(FFieldNames[Index]) <> '' Then
Begin
If (Not (Assigned(DataSet.FindField(FFieldNames[Index]))) And
Not(FindDef(FFieldNames[Index]))) Then
Begin
If FFieldTypes[Index] = {$IFDEF FPC}45{$ELSE}dwftExtended{$ENDIF} Then
Begin
DataSet.FieldDefs.Add(FFieldNames[Index], DWFieldTypeToFieldType(FFieldTypes[Index]));
VFDef := DataSet.FieldDefs[DataSet.FieldDefs.Count -1];
End
Else
Begin
VFDef := DataSet.FieldDefs.AddFieldDef;
VFDef.Name := FFieldNames[Index];
VFDef.DataType := DWFieldTypeToFieldType(FFieldTypes[Index]);
End;
If FFieldTypes[Index] <> dwftExtended Then
VFDef.Size := FFieldSize[Index];
VFDef.Required := FFieldAttrs[Index] and 1 > 0;
Case FFieldTypes[Index] of
dwftFloat,
dwftCurrency : VFDef.Precision := FFieldPrecision[Index];
dwftBCD,
dwftFMTBcd : Begin
{$IFNDEF FPC}
VFDef.Size := 0;
VFDef.Precision := 0;
{$ELSE}
VFDef.Precision := FFieldPrecision[Index];
{$ENDIF}
End;
{
dwftWideString : Begin
If VFDef.Size > 7100 Then
Begin
VFDef.Size := 7100;
FFieldSize[Index] := VFDef.Size;
End;
End;
}
End;
End;
End;
End;
Var
ADataSet : TRESTDWMemTable;
I,
vFieldsCount : DWInteger;
vFieldSize,
vFieldPrecision : DWInt16;
vFieldName : DWString;
vBoolean,
vNoFields : Boolean;
vByte,
vFieldKind,
vFieldType,
vFieldProviderFlags : Byte;
vFieldDef : TFieldDef;
vField : TField;
Begin
ADataSet := TRESTDWMemTable(IDataset.GetDataset);
// field count
AStream.Position := 0;
AStream.Read(vFieldsCount, SizeOf(vFieldsCount));
SetLength(FFieldKind, vFieldsCount);
SetLength(FFieldTypes, vFieldsCount);
SetLength(FFieldAttrs, vFieldsCount);
SetLength(FFieldNames, vFieldsCount);
SetLength(FFieldSize, vFieldsCount);
SetLength(FFieldPrecision, vFieldsCount);
SetLength(FFieldExists, vFieldsCount);
// encodestrs
AStream.Read(vBoolean, Sizeof(vBoolean));
EncodeStrs := vBoolean;
vNoFields := (ADataSet.Fields.Count = 0);
ADataSet.Close;
If vNoFields Then
ADataSet.FieldDefs.Clear;
For I := 0 To vFieldsCount-1 Do
Begin
// field kind
AStream.Read(vFieldKind, SizeOf(vFieldKind));
FFieldKind[I] := TFieldKind(vFieldKind);
// field name
AStream.Read(vByte, SizeOf(vByte));
SetLength(vFieldName, vByte);
AStream.Read(vFieldName[InitStrPos], vByte);
FFieldNames[I] := vFieldName;
// field type
AStream.Read(vFieldType, SizeOf(vFieldType));
If vFieldType in [Integer(ftFloat), {$IFDEF FPC}45, {$ENDIF}dwftExtended] Then
FFieldTypes[I] := {$IFDEF FPC}Integer(ftFMTBcd){$ELSE}Integer(ftExtended){$ENDIF}
Else
FFieldTypes[I] := vFieldType;
// field size
AStream.Read(vFieldSize, SizeOf(vFieldSize));
If vFieldType = dwftVarBytes Then //Max Array Size
Begin
FFieldTypes[I] := Integer(ftString);
FFieldSize[I] := 255;
End
Else
FFieldSize[I] := vFieldSize;
// field precision
AStream.Read(vFieldPrecision, SizeOf(vFieldPrecision));
{$IFDEF FPC}
If vFieldType in [dwftFloat, dwftFMTBcd, dwftBCD] Then
Begin
If (vFieldPrecision < 12) Or
(FFieldPrecision[I] = 0) Then
FFieldPrecision[I] := 12;
End;
{$ELSE}
FFieldPrecision[I] := vFieldPrecision;
If vFieldType in [dwftSingle] Then
If vFieldPrecision < 12 Then
FFieldPrecision[I] := 12;
{$ENDIF}
// required + provider flags
AStream.Read(vFieldProviderFlags, SizeOf(Byte));
FFieldAttrs[I] := vFieldProviderFlags;
// field is persistent or no fields persistet
FFieldExists[I] := (ADataSet.FindField(FFieldNames[I]) <> nil); // or (vNoFields);
// create fieldsDefs like fields persistent
// If ((vNoFields) Or (Not FFieldExists[I])) Then
ADataSet.FieldAttrs := FFieldAttrs;
CreateFieldDefs(ADataSet, I);
End;
ADataSet.Open;
// provider flags deve ser recolocado depois dos fields criados se nao existiam
If (vNoFields) Then
Begin
For I := 0 to vFieldsCount-1 do
Begin
vField := ADataSet.FindField(FFieldNames[I]);
If vField <> Nil Then
Begin
vField.ProviderFlags := [];
If FFieldAttrs[I] And 2 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfInUpdate];
If FFieldAttrs[I] And 4 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfInWhere];
If FFieldAttrs[I] And 8 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfInKey];
If FFieldAttrs[I] And 16 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfHidden];
{$IFDEF RESTDWLAZARUS}
If FFieldAttrs[I] And 32 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfRefreshOnInsert];
If FFieldAttrs[I] And 64 > 0 Then
vField.ProviderFlags := vField.ProviderFlags + [pfRefreshOnUpdate];
{$ENDIF}
End;
End;
End;
ADataSet.DisableControls;
Try
LoadRecordDWMemFromStream(IDataset, AStream);
Finally
ADataSet.EnableControls;
AStream := Nil;
AStream.Free;
End;
End;
Procedure TRESTDWStorageBin.LoadRecordDWMemFromStream(Dataset : IRESTDWMemTable;
stream : TStream);
Var
I, B,
vFieldCount : DWInteger;
vRecCount : DWInt64;
vVarBytes : TRESTDWBytes;
aField : TField;
aIndex : Integer;
vDataset : TRESTDWMemTable;
vActualRecord : TRESTDWMTMemoryRecord;
vDataType : TFieldType;
vDWFieldType : Byte;
pData : {$IFDEF FPC} PAnsiChar {$ELSE} PByte {$ENDIF};
pActualRecord : PRESTDWMTMemBuffer;
V6 : DWFloat;
S : DWString;
vString : DWString;
vWideString : DWWideString;
// vDWWideString : DWWideString;
vInt : DWInteger;
vLength : DWWord;
vBoolean : Boolean;
vInt64 : DWInt64;
vSingle : DWSingle;
vDouble : DWDouble;
vExtended : DWLongDouble;
vWord : DWWord;
vCurrency : DWCurrency;
vTimeStamp : {$IFDEF FPC} TTimeStamp {$ELSE} TSQLTimeStamp {$ENDIF};
{$IFDEF FPC}
vTimeStampLaz : TDateTime;
{$ELSE}
vTimeStampDelphi : TDateTime;
{$ENDIF}
vBCD : DWBcd;
vBytes : TRESTDWBytes;
vTimeZone : DWDouble;
vDateTimeRec : TDateTimeRec;
vByte : Byte;
{$IFNDEF FPC}
{$IF CompilerVersion >= 21}
vTimeStampOffset: TSQLTimeStampOffset;
{$IFEND}
{$ENDIF}
Procedure tratarNulos;
Begin
If aField = nil Then
Exit;
If (vDWFieldType In [dwftFixedWideChar,
dwftWideString,
dwftFixedChar,
dwftString]) Then
// dwftOraClob,
// dwftWideMemo,
// dwftFmtMemo,
// dwftMemo]) Then
Begin
vLength := Dataset.GetCalcFieldLen(aField.DataType, aField.Size);
{$IFDEF FPC}
FillChar(PData^, vLength, #0);
{$ELSE}
FillChar(pData^, vLength, 0);
{$ENDIF}
End
Else If (vDWFieldType In [dwftLongWord,
dwftByte,
dwftShortint,
dwftSmallint,
dwftWord,
dwftInteger,
// dwftSingle,
dwftExtended,
dwftFloat,
dwftOraTimeStamp,
dwftBCD,
// dwftFMTBcd,
dwftCurrency,
dwftDate,
dwftTime,
dwftDateTime,
dwftTimeStampOffset,
dwftAutoInc,
dwftLargeint,
dwftTimeStamp]) Then
Begin
If Not (vDWFieldType In [dwftByte,
dwftShortint]) Then
Begin
vLength := Dataset.GetCalcFieldLen(aField.DataType, aField.Size);
{$IFDEF FPC}
FillChar(PData^, vLength, #0);
Move(vBoolean, pData^, SizeOf(Boolean));
{$ELSE}
{$IF CompilerVersion <= 22}
FillChar(PData^, vLength, #0);
{$IFEND}
Move(vBoolean, pData^, SizeOf(Boolean));
{$ENDIF}
End
Else If vBoolean Then
FillChar(pData^, 1, 'S');
End
Else If (vDWFieldType In [dwftBoolean]) Then
FillChar(pData^, 2, 0);
End;
Begin
pActualRecord := Nil;
vDataset := TRESTDWMemTable(Dataset.GetDataset);
stream.Read(vRecCount, SizeOf(vRecCount));
vRecCount := vRecCount - 1;
vFieldCount := Length(FFieldNames);
vFieldCount := vFieldCount - 1;
For i := 0 To vRecCount Do
Begin
pActualRecord := PRESTDWMTMemBuffer(Dataset.AllocRecordBuffer);
{$IFDEF RESTDWANDROID}
Dataset.InternalAddRecord(nativeint(pActualRecord), True);
{$ELSE}
Dataset.InternalAddRecord(pActualRecord, True);
{$ENDIF}
vActualRecord := Dataset.GetMemoryRecord(i);
For b := 0 To vFieldCount Do
Begin
vBoolean := False;
stream.Read(vBoolean, SizeOf(boolean));
SetLength(vVarBytes, 0);
aField := vDataset.FindField(FFieldNames[b]);
If aField <> Nil Then
Begin
aIndex := aField.FieldNo - 1;
If (aIndex < 0) Then
Continue;
vDataType := aField.DataType;
End
Else
vDataType := DWFieldTypeToFieldType(FFieldTypes[b]);
vDWFieldType := FFieldTypes[b];
pData := nil;
If (pActualRecord <> Nil) Then
Begin
If aField <> Nil Then
Begin
If Dataset.DataTypeSuported(vDataType) Then
Begin
If Dataset.DataTypeIsBlobTypes(vDataType) Then
pData := Pointer(Dataset.GetBlob(-1, aField.Offset))
Else
pData := Pointer(pActualRecord + Dataset.GetOffSets(aField));
End;
End;
If vDWFieldType <> dwftBoolean Then
Begin
tratarNulos;
If Not vBoolean Then
Continue;
End;
If (pData <> Nil) Or (aField = Nil) Then
Begin
// N Bytes - WideString
case vDWFieldType Of
dwftWideString,
dwftFixedWideChar :Begin
stream.Read(vInt64, SizeOf(vInt64));
vWideString := '';
If vInt64 > 0 Then
Begin
SetLength(vWideString, vInt64);
{$IFDEF FPC}
stream.Read(Pointer(vString)^, vInt64);
If EncodeStrs Then
vString := DecodeStrings(vString, Dataset.GetDatabaseCharSet);
vString := GetStringEncode(vString, Dataset.GetDatabaseCharSet);
vInt64 := (Length(vString) + 1) * SizeOf(WideChar);
If aField <> Nil Then
Move(Pointer(WideString(vString))^, PData^, vInt64);
{$ELSE}
stream.Read(vWideString[InitStrPos], vInt64);
If EncodeStrs Then
vString := DecodeStrings(vWideString)
Else
vString := Trim(vWideString);
// vInt64 := (Length(vString) + 1);// * SizeOf(WideChar);
If aField <> Nil Then
Move(vString[InitStrPos], pData^, Length(vString));
{$ENDIF}
End;
End;
// N Bytes - Strings
dwftVarBytes,
dwftFixedChar,
dwftString : Begin
SetLength(vString, 0);
stream.Read(vInt64, SizeOf(vInt64));
vString := '';
If vInt64 > 0 Then
Begin
SetLength(vString, vInt64);
// FillChar(Pointer(@vString)^, vInt64, 0);
{$IFDEF FPC}
stream.Read(Pointer(vString)^, vInt64);
If EncodeStrs Then
vString := DecodeStrings(vString, Dataset.GetDatabaseCharSet);
vString := GetStringEncode(vString, Dataset.GetDatabaseCharSet);
If aField <> Nil Then
Move(Pointer(vString)^, pData^, vInt64);
{$ELSE}
stream.Read(vString[InitStrPos], vInt64);
If EncodeStrs Then
vString := DecodeStrings(vString);
If aField <> Nil Then
Begin
// FillChar(pData^, vInt64, 0);
Move(Pointer(vString)^, pData^, vInt64);
End;
{$ENDIF}
End;
End;
// 1 - Byte - Inteiro
dwftByte,
dwftShortint :Begin
stream.Read(vByte, SizeOf(vByte));
If aField <> Nil Then
Move(vByte, PData^, Sizeof(vByte));
End;
// 1 - Byte - Boolean
dwftBoolean :Begin
setlength(vVarBytes, 0);
setlength(vVarBytes, Sizeof(Boolean));
// Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
// stream.Read(vBoolean, SizeOf(vBoolean));
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
// Move(vBoolean, vVarBytes[1], Sizeof(Boolean));
If aField <> Nil Then
Move(vVarBytes[0], PData^, Sizeof(vBoolean));
End;
// 2 - Bytes
dwftSmallint,
dwftWord :Begin
stream.Read(vWord, SizeOf(vWord));
If aField <> Nil Then
Begin
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vWord));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
//Move Bytes do Dado para Bytes
Move(vWord, vVarBytes[1], Sizeof(vWord));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Sizeof(Boolean) + Sizeof(vWord));
End;
End;
// 4 - Bytes - Inteiros
dwftInteger :Begin
stream.Read(vInt, SizeOf(vInt));
If aField <> Nil Then
Begin
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vInt));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
//Move Bytes do Dado para Bytes
Move(vInt, vVarBytes[1], Sizeof(vInt));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Sizeof(Boolean) + Sizeof(vInt));
End;
End;
// // 4 - Bytes - Flutuantes
// dwftSingle :Begin // Gledston
// vLength := SizeOf(vDouble);
// stream.Read(vDouble, vLength);
// If aField <> Nil Then
// Begin
// //Move(vSingle,PData^,Sizeof(vSingle));
// SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vDouble));
// //Move Null para Bytes
// Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
// //Move Bytes do Dado para Bytes
// Move(vDouble, vVarBytes[1], Sizeof(vDouble));
// //Move Bytes para Buffer
// Move(vVarBytes[0], PData^, Length(vVarBytes));
// End;
// End;
// 8 - Bytes - Inteiros
dwftLargeint,
dwftAutoInc,
dwftLongWord :Begin
stream.Read(vInt64, SizeOf(vInt64));
If aField <> Nil Then
Begin
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vInt64));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
//Move Bytes do Dado para Bytes
Move(vInt64, vVarBytes[1], Sizeof(vInt64));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Length(vVarBytes));
End;
End;
// 8 - Bytes - Flutuantes
dwftFloat
{$IFDEF FPC}
, 45 //Extended
{$ENDIF}
, dwftExtended
:Begin
vDouble := 0;
stream.Read(vDouble, SizeOf(vDouble));
If aField <> Nil Then
Begin
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vExtended));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
//Move Bytes do Dado para Bytes
vExtended := vDouble;
Move(vExtended, vVarBytes[1], Sizeof(vExtended));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Length(vVarBytes));
End;
End;
// dwftExtended :Begin
// stream.Read(vExtended, SizeOf(vExtended));
// If aField <> Nil Then
// Begin
// SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vExtended));
// //Move Null para Bytes
// Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
// //Move Bytes do Dado para Bytes
// Move(vExtended, vVarBytes[1], Sizeof(vExtended));
// //Move Bytes para Buffer
// {$IFDEF FPC}
// PRESTDWBytes(pData)^ := vVarBytes;
// {$ELSE}
// Move(vVarBytes[0], PData^, Sizeof(Boolean) + Sizeof(vExtended));
// {$ENDIF}
// End;
// End;
// 8 - Bytes - Date, Time, DateTime, TimeStamp
dwftDate,
dwftTime,
dwftDateTime,
dwftTimeStamp : Begin
stream.Read(vDouble, SizeOf(vDouble));
If aField <> Nil Then
Begin
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vDouble));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
//Move Bytes do Dado para Bytes
Case vDataType Of
ftDate : vDouble := DateTimeToTimeStamp(vDouble).Date;
// ftTimeStamp : vDouble := TimeStampToMSecs(DateTimeToTimeStamp(vDouble));
End;
Move(vDouble, vVarBytes[1], Sizeof(vDouble));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Length(vVarBytes));
End;
End;
// TimeStampOffSet To Double - 8 Bytes
// + TimeZone - 2 Bytes
dwftTimeStampOffset :Begin
{$IF (NOT DEFINED(FPC)) AND (CompilerVersion >= 21)}
stream.Read(vDouble, SizeOf(vDouble));
vTimeStampOffSet := DateTimeToSQLTimeStampOffset(vDouble);
stream.Read(vByte, SizeOf(vByte));
vTimeStampOffSet.TimeZoneHour := vByte - 12;
stream.Read(vByte, SizeOf(vByte));
vTimeStampOffSet.TimeZoneMinute := vByte;
If aField <> Nil Then
Move(vTimeStampOffSet, PData^, Sizeof(vTimeStampOffSet));
{$ELSE}
// field foi transformado em tdatetime
stream.Read(vDouble, SizeOf(vDouble));
stream.Read(vByte, SizeOf(vByte));
vTimeZone := (vByte - 12) / 24;
stream.Read(vByte, SizeOf(vByte));
If vTimeZone > 0 Then
vTimeZone := vTimeZone + (vByte / 60 / 24)
Else
vTimeZone := vTimeZone - (vByte / 60 / 24);
vDouble := vDouble - vTimeZone;
If aField <> Nil Then
Begin
{$IFDEF FPC}
vDateTimeRec := DateTimeToDateTimeRec(vDataType, TDateTime(vDouble));
Move(vDateTimeRec, PData^, SizeOf(vDateTimeRec));
{$ELSE}
Case vDataType Of
ftDate : vDateTimeRec.Date := DateTimeToTimeStamp(vDouble).Date;
ftTime : vDateTimeRec.Time := DateTimeToTimeStamp(vDouble).Time;
Else vDateTimeRec.DateTime := TimeStampToMSecs(DateTimeToTimeStamp(vDouble));
End;
Move(vDateTimeRec, pData^, SizeOf(vDateTimeRec));
{$ENDIF}
End;
{$IFEND}
End;
// 8 - Bytes - Currency
dwftCurrency :Begin
stream.Read(vCurrency, SizeOf(vCurrency));
If aField <> Nil Then
Begin
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vCurrency));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
vString := CurrToStr(vCurrency); //Gledston acresentei estas linhas
V6 := StrtoFloat(vString);
//Move Bytes do Dado para Bytes
Move(V6, vVarBytes[1], Sizeof(V6));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Length(vVarBytes));
End;
End;
// 8 - Bytes - Currency
dwftBCD :Begin
stream.Read(vCurrency, SizeOf(vCurrency));
If aField <> Nil Then
Begin
{$IFDEF FPC}
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vCurrency));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
//Move Bytes do Dado para Bytes
Move(vCurrency, vVarBytes[1], Sizeof(vCurrency));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Length(vVarBytes));
{$ELSE}
{$IF CompilerVersion <= 21}
CurrToBCD(vCurrency, vBCD);
{$ELSE}
vBCD := CurrencyToBcd(vCurrency);
{$IFEND}
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vBCD));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
//Move Bytes do Dado para Bytes
Move(vBCD, vVarBytes[1], Sizeof(vBCD));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Sizeof(Boolean) + Sizeof(vBCD));
{$ENDIF}
End;
End;
// 8 - Bytes - Currency
{$IFNDEF FPC}dwftFMTBcd : Begin
stream.Read(vCurrency, SizeOf(vCurrency));
{$IFDEF FPC}
vBCD := CurrToBcd(vCurrency);
{$ELSE}
{$IF CompilerVersion <= 21}
CurrToBCD(vCurrency, vBCD);
{$ELSE}
vBCD := CurrencyToBcd(vCurrency);
{$IFEND}
{$ENDIF}
SetLength(vVarBytes, Sizeof(Boolean) + Sizeof(vBCD));
//Move Null para Bytes
Move(vBoolean, vVarBytes[0], Sizeof(Boolean));
//Move Bytes do Dado para Bytes
Move(vBCD, vVarBytes[1], Sizeof(vBCD));
//Move Bytes para Buffer
Move(vVarBytes[0], PData^, Sizeof(Boolean) + Sizeof(vBCD));
End;
{$ENDIF}
//N Bytes - String Blobs
dwftWideMemo,
dwftFmtMemo,
dwftOraClob,
dwftMemo,
// dwftMemo :Begin
// stream.Read(vInt64, SizeOf(vInt64));
// vString := '';
// If vInt64 > 0 Then
// Begin
// SetLength(vString, vInt64);
// {$IFDEF FPC}
// stream.Read(Pointer(vString)^, vInt64);
// If EncodeStrs Then
// vString := DecodeStrings(vString, csUndefined);
// vString := GetStringEncode(vString, csUndefined);
// {$ELSE}
// stream.Read(vString[InitStrPos], vInt64);
// If EncodeStrs Then
// vString := DecodeStrings(vString);
// {$ENDIF}
// vInt64 := Length(vString) + 1;
// Try
// SetLength(vBytes, vInt64);
// Move(vString[InitStrPos], vBytes[0], vInt64);
// If aField <> Nil Then
// PRESTDWBytes(pData)^ := vBytes;
// Finally
// SetLength(vBytes, 0);
// End;
// End;
// End;
// N Bytes - Others Blobs
dwftStream,
dwftOraBlob,
dwftBlob,
dwftBytes : Begin
SetLength(vBytes, 0);
stream.Read(vInt64, SizeOf(DWInt64));
If vInt64 > 0 Then
Begin
// Actual TODO XyberX
SetLength(vBytes, vInt64);
stream.Read(vBytes[0], vInt64);
End;
Try
If Length(vBytes) > 0 Then
Begin
If aField <> Nil Then
PRESTDWBytes(pData)^ := vBytes;
End;
Finally
SetLength(vBytes, 0);
End;
End;
// N Bytes - Others
Else
Begin
stream.Read(vInt64, SizeOf(vInt64));
vString := '';
If vInt64 > 0 Then
Begin
SetLength(vString, vInt64);
{$IFDEF FPC}
stream.Read(Pointer(vString)^, vInt64);
If EncodeStrs Then
vString := DecodeStrings(vString, csUndefined);
vString := GetStringEncode(vString, csUndefined);
If aField <> Nil Then
Move(Pointer(vString)^, PData^, Length(vString));
{$ELSE}
stream.Read(vString[InitStrPos], vInt64);
If EncodeStrs Then
vString := DecodeStrings(vString);
If aField <> Nil Then
Move(vString[InitStrPos], pData^, Length(vString));
{$ENDIF}
End;
End;
End;
End;
End;
SetLength(vVarBytes, 0);
End;
Try
Dataset.SetMemoryRecordData(pActualRecord, i);
Finally
Reallocmem(pActualRecord, 0);
// Dispose(pActualRecord);//FreeMem(PRESTDWMTMemBuffer(@PActualRecord));
End;
End;
End;
Procedure TRESTDWStorageBin.LoadRecordFromStream(ADataset : TDataset;
AStream : TStream);
Var
vField : TField;
vString : DWString;
vInt64 : DWInt64;
I,
vInt : DWInteger;
vDouble,
vTimeZone : DWDouble;
vSingle : DWSingle;
vSmallint : DWSmallint;
vCurrency : DWCurrency;
vMemoryAStream : TMemoryStream;
vBoolean : Boolean;
vByte : Byte;
{$IFDEF DELPHIXEUP}
vTimeStampOffset : TSQLTimeStampOffset;
{$ENDIF}
Begin
For I := 0 To Length(FFieldTypes) -1 Do
Begin
vField := ADataset.Fields[i];