80 lines
3.1 KiB
VB.net
80 lines
3.1 KiB
VB.net
Imports System.IO
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Imports System.Runtime.CompilerServices
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Imports Microsoft.VisualBasic.ComponentModel
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Namespace Text.Xml.Linq
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''' <summary>
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''' Write a very large dataset in Xml format
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''' </summary>
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Public Class DataSetWriter(Of T) : Implements IDisposable
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Dim file As StreamWriter
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Dim offsetLength As Integer = NodeIterator.XmlDeclare.Length
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Dim indentBlank$ = " "
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Sub New(file As String, Optional encoding As Encodings = Encodings.UTF8)
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Me.file = file.OpenWriter(encoding)
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Me.file.WriteLine(NodeIterator.XmlDeclare)
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Me.file.WriteLine($"<DataSetOf{GetType(T).Name} xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"">")
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Me.file.WriteLine(indentBlank & "<!--")
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Me.file.WriteLine(XmlDataModel.GetTypeReferenceComment(GetType(T), 6))
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Me.file.WriteLine(indentBlank & "-->")
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End Sub
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Public Sub Write(data As T)
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Dim xml As String() = data.GetXml.LineTokens.Skip(1).ToArray
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xml(0) = xml(0) _
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.Replace("xmlns:xsd=""http://www.w3.org/2001/XMLSchema""", "") _
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.Replace("xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance""", "") _
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.Replace(" ", "")
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For Each line As String In xml
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Call file.Write(indentBlank)
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Call file.WriteLine(line)
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Next
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End Sub
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Sub Flush()
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Call file.Flush()
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End Sub
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#Region "IDisposable Support"
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Private disposedValue As Boolean ' To detect redundant calls
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' IDisposable
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Protected Overridable Sub Dispose(disposing As Boolean)
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If Not disposedValue Then
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If disposing Then
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' TODO: dispose managed state (managed objects).
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Call file.WriteLine($"</DataSetOf{GetType(T).Name}>")
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Call file.Flush()
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Call file.Close()
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Call file.Dispose()
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End If
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' TODO: free unmanaged resources (unmanaged objects) and override Finalize() below.
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' TODO: set large fields to null.
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End If
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disposedValue = True
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End Sub
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' TODO: override Finalize() only if Dispose(disposing As Boolean) above has code to free unmanaged resources.
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'Protected Overrides Sub Finalize()
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' ' Do not change this code. Put cleanup code in Dispose(disposing As Boolean) above.
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' Dispose(False)
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' MyBase.Finalize()
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'End Sub
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' This code added by Visual Basic to correctly implement the disposable pattern.
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Public Sub Dispose() Implements IDisposable.Dispose
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' Do not change this code. Put cleanup code in Dispose(disposing As Boolean) above.
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Dispose(True)
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' TODO: uncomment the following line if Finalize() is overridden above.
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' GC.SuppressFinalize(Me)
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End Sub
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#End Region
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End Class
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End Namespace |