2022-09-29 15:11:32 +02:00

617 lines
24 KiB
VB.net

Imports System.IO
Imports System.ServiceModel
Imports System.ServiceModel.Description
Imports DigitalData.Modules.Database
Imports DigitalData.Modules.Logging
Imports DigitalData.Modules.Language
Imports DigitalData.Modules
Imports DigitalData.Modules.EDMI
Imports DigitalData.Modules.EDMI.API.Rights
Imports DigitalData.Services.EDMIService.Messages
Imports DigitalData.Services.EDMIService.Exceptions
Imports DigitalData.Services.EDMIService.Methods
Imports DigitalData.Services.EDMIService.Methods.Database
Imports DigitalData.Services.EDMIService.Methods.IDB
<ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerSession)>
Public Class EDMIService
Implements IEDMIService
Public Shared LogConfig As LogConfig
Public Shared MSSQL_ECM As MSSQLServer
Public Shared MSSQL_IDB As MSSQLServer
Public Shared Firebird As Firebird
Public Shared AppConfig As Config
Public Shared Filesystem As Filesystem.File
Public Shared GlobalState As GlobalState
Public Shared Scheduler As Scheduler
Public Const TBIDB_DOC_INFO = "TBIDB_DOC_INFO"
Public Const TBIDB_ACCESSRIGHT = "TBIDB_ACCESSRIGHT"
Private ReadOnly _Logger As Logger
Private ReadOnly _Debug As Boolean = False
Private ReadOnly _Username As String
Private ReadOnly _IDBHelpers As IDB.Helpers
Public Shared Sub Configure(Config As ServiceConfiguration)
Dim oBaseAddress = Config.BaseAddresses.Item(0)
Dim oBinding = API.Channel.GetBinding()
Dim oAddress = New EndpointAddress(oBaseAddress)
' See: https://stackoverflow.com/questions/42327988/addserviceendpoint-throws-key-is-null
Dim oDescription = ContractDescription.GetContract(GetType(IEDMIService), GetType(EDMIService))
Dim oEndpoint As New ServiceEndpoint(oDescription, oBinding, oAddress)
Config.AddServiceEndpoint(oEndpoint)
Config.Description.Behaviors.Add(New ServiceDebugBehavior With {.IncludeExceptionDetailInFaults = True})
End Sub
Public Sub New()
Dim oOperationContext As OperationContext = OperationContext.Current
Dim oInstanceContext As InstanceContext = oOperationContext.InstanceContext
Dim oUsername = StripDomainFromUsername(oOperationContext.ServiceSecurityContext.WindowsIdentity.Name)
_Username = oUsername
_Logger = LogConfig.GetLogger()
_Logger.Debug("New Request by User [{0}]", _Username)
_IDBHelpers = New IDB.Helpers(LogConfig, MSSQL_IDB)
End Sub
#Region "=== Base ==="
Public Function Heartbeat() As Boolean Implements IEDMIService.Heartbeat
Return True
End Function
Public Function GetClientConfig() As Base.GetClientConfig.GetClientConfigResponse Implements IEDMIService.GetClientConfig
_Logger.Debug("Start of Method [GetClientConfig]")
Dim oGetClientConfig As New Base.GetClientConfig.GetClientConfigMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oGetClientConfig.Run()
End Function
#End Region
Public Function NewFile(Data As NewFile.NewFileRequest) As NewFile.NewFileResponse Implements IEDMIService.NewFile
_Logger.Debug("Start of Method [NewFile]")
Dim oNewFile As New NewFile.NewFileMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oNewFile.Run(Data)
End Function
Public Function UpdateFile(Data As UpdateFile.UpdateFileRequest) As UpdateFile.UpdateFileResponse Implements IEDMIService.UpdateFile
_Logger.Debug("Start of Method [VersionFile]")
Dim oVersionFile As New UpdateFile.UpdateFileMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oVersionFile.Run(Data)
End Function
Public Function SetAttributeValue(Data As SetAttributeValue.SetAttributeValueRequest) As SetAttributeValue.SetAttributeValueResponse Implements IEDMIService.SetAttributeValue
_Logger.Debug("Start of Method [SetAttributeValue]")
Dim oSetAttributeValue As New SetAttributeValue.SetAttributeValueMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oSetAttributeValue.Run(Data)
End Function
Public Function GetAttributeValue(Data As GetAttributeValue.GetAttributeValueRequest) As GetAttributeValue.GetAttributeValueResponse Implements IEDMIService.GetAttributeValue
_Logger.Debug("Start of Method [GetAttributeValue]")
Dim oGetAttributeValue As New GetAttributeValue.GetAttributeValueMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oGetAttributeValue.Run(Data)
End Function
Public Function GetFileObject(pData As GetFileObject.GetFileObjectRequest) As GetFileObject.GetFileObjectResponse Implements IEDMIService.GetFileObject
_Logger.Debug("Start of Method [GetFileObject]")
Dim oGetFileObject As New GetFileObject.GetFileObjectMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oGetFileObject.Run(pData)
End Function
Public Function CheckInOutFile(pData As CheckInOutFile.CheckInOutFileRequest) As CheckInOutFile.CheckInOutFileResponse Implements IEDMIService.CheckInOutFile
_Logger.Debug("Start of Method [CheckInOutFile]")
Dim oCheckInOutFile As New CheckInOutFile.CheckInOutFileMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oCheckInOutFile.Run(pData)
End Function
Public Function ImportFile(pData As ImportFile.ImportFileRequest) As ImportFile.ImportFileResponse Implements IEDMIService.ImportFile
_Logger.Debug("Start of Method [IDB.ImportFile]")
Dim oImportFile As New ImportFile.ImportFileMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oImportFile.Run(pData)
End Function
Public Function Globix_ImportFile(pData As GlobalIndexer.ImportFile.Globix_ImportFileRequest) As GlobalIndexer.ImportFile.Globix_ImportFileResponse Implements IEDMIService.Globix_ImportFile
_Logger.Debug("Start of Method [Globix.ImportFile]")
Dim oImportFile As New GlobalIndexer.ImportFile.ImportFileMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oImportFile.Run(pData)
End Function
#Region "=== Database ==="
Public Function GetCachedTables() As List(Of String) Implements IEDMIService.GetCachedTables
Try
Return GlobalState.GetCachedTables()
Catch ex As Exception
_Logger.Error(ex)
Return New List(Of String)
End Try
End Function
Public Function ReturnDatatableFromCache(Name As String, FilterExpression As String, SortByColumn As String) As TableResult Implements IEDMIService.ReturnDatatableFromCache
Dim oReturnDatatableFromCache As New GetDatatableFromCache.GetDatatableFromCacheMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Dim oResult = oReturnDatatableFromCache.Run(New GetDatatableFromCache.GetDatatableFromCacheRequest With {
.DataTable = Name,
.FilterExpression = FilterExpression,
.SortByColumn = SortByColumn
})
If oResult.OK Then
Return New TableResult(oResult.Table)
Else
Return New TableResult(oResult.ErrorMessage)
End If
End Function
Public Function ReturnDatatable(pData As GetDatatable.GetDatatableRequest) As GetDatatable.GetDatatableResponse Implements IEDMIService.ReturnDatatable
_Logger.Debug("Start of Method [ReturnDatatable]")
Dim oGetDatatable As New GetDatatable.GetDatatableMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oGetDatatable.Run(pData)
End Function
Public Function ReturnScalarValue(pData As GetScalarValue.GetScalarValueRequest) As GetScalarValue.GetScalarValueResponse Implements IEDMIService.ReturnScalarValue
_Logger.Debug("Start of Method [ReturnScalarValue]")
Dim oGetScalarValue As New GetScalarValue.GetScalarValueMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oGetScalarValue.Run(pData)
End Function
Public Function ExecuteNonQuery(pData As ExecuteNonQuery.ExecuteNonQueryRequest) As ExecuteNonQuery.ExecuteNonQueryResponse Implements IEDMIService.ExecuteNonQuery
_Logger.Debug("Start of Method [ExecuteNonQuery]")
Dim oExecuteNonQuery As New ExecuteNonQuery.ExecuteNonQueryMethod(LogConfig, MSSQL_IDB, MSSQL_ECM, GlobalState)
Return oExecuteNonQuery.Run(pData)
End Function
#End Region
#Region "=== Database (MSSQL IDB) ==="
Public Function ReturnDatatable_MSSQL_IDB(SQL As String) As TableResult Implements IEDMIService.ReturnDatatable_MSSQL_IDB
Try
_Logger.Info($"ReturnDatatable_MSSQL_IDB, SQL: {SQL}")
Dim oResult As DataTable = MSSQL_IDB.GetDatatable(SQL)
oResult.TableName = "DD_RESULT"
Return New TableResult(oResult)
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function ReturnScalar_MSSQL_IDB(SQL As String) As ScalarResult Implements IEDMIService.ReturnScalar_MSSQL_IDB
Try
_Logger.Info($"ReturnScalar_MSSQL_IDB, SQL: {SQL}")
Dim oResult As Object = MSSQL_IDB.GetScalarValue(SQL)
Return New ScalarResult(oResult)
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function ExecuteNonQuery_MSSQL_IDB(SQL As String) As NonQueryResult Implements IEDMIService.ExecuteNonQuery_MSSQL_IDB
Try
_Logger.Info($"ExecuteNonQuery_MSSQL_IDB, SQL: {SQL}")
Dim oResult As Boolean = MSSQL_IDB.ExecuteNonQuery(SQL)
Return New NonQueryResult()
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
#End Region
#Region "=== Database (MSSQL ECM) ==="
Public Function ReturnDatatable_MSSQL_ECM(SQL As String) As TableResult Implements IEDMIService.ReturnDatatable_MSSQL_ECM
Try
_Logger.Info($"ReturnDatatable_MSSQL_ECM, SQL: {SQL}")
Dim oResult As DataTable = MSSQL_ECM.GetDatatable(SQL)
oResult.TableName = "DD_RESULT"
Return New TableResult(oResult)
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function ReturnScalar_MSSQL_ECM(SQL As String) As ScalarResult Implements IEDMIService.ReturnScalar_MSSQL_ECM
Try
_Logger.Info($"ReturnScalar_MSSQL_ECM, SQL: {SQL}")
Dim oResult As Object = MSSQL_ECM.GetScalarValue(SQL)
Return New ScalarResult(oResult)
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function ExecuteNonQuery_MSSQL_ECM(SQL As String) As NonQueryResult Implements IEDMIService.ExecuteNonQuery_MSSQL_ECM
Try
_Logger.Info($"ExecuteNonQuery_MSSQL_ECM, SQL: {SQL}")
Dim oResult As Boolean = MSSQL_ECM.ExecuteNonQuery(SQL)
Return New NonQueryResult()
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
#End Region
#Region "=== Database (Firebird) ==="
Public Function ReturnDatatable_Firebird(SQL As String) As TableResult Implements IEDMIService.ReturnDatatable_Firebird
Try
_Logger.Info($"ReturnDatatable, SQL: {SQL}")
Dim oResult As DataTable = Firebird.GetDatatable(SQL)
oResult.TableName = "DD_RESULT"
Return New TableResult(oResult)
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function ReturnScalar_Firebird(SQL As String) As ScalarResult Implements IEDMIService.ReturnScalar_Firebird
Try
_Logger.Info($"ReturnScalar, SQL: {SQL}")
Dim oResult As Object = Firebird.GetScalarValue(SQL)
Return New ScalarResult(oResult)
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function ExecuteNonQuery_Firebird(SQL As String) As NonQueryResult Implements IEDMIService.ExecuteNonQuery_Firebird
Try
_Logger.Info($"ExecuteNonQuery, SQL: {SQL}")
Dim oResult As Boolean = Firebird.ExecuteNonQuery(SQL)
Return New NonQueryResult()
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
#End Region
#Region "=== Document ==="
''' <summary>
''' Imports a file according to ObjectStoreId
''' </summary>
''' <returns></returns>
'Public Function ImportFile(Data As DocumentImportRequest) As DocumentImportResponse Implements IEDMIService.ImportFile
' Dim oObjectStore = GlobalState.ObjectStores.First()
' Dim EDMIPath = New EDMI.File.Path(LogConfig, oObjectStore.Path)
' ' TODO:
' ' - Get Object Store -> Object Catalog -> Catalog Path
' ' - If IS_ARCHIVE = True And RetentionDays <> Nothing:
' ' DoArchive!
' ' - Refactor EDMIPath to get ObjectStore at service start up
' ' and return ObjectStore Path from ObjectStoreId + RelativePath
' ' VWIDB_OBJECTSTORE
' Dim oRelativePath As String = EDMIPath.GetRelativePath(Data.DocumentType, Data.FileName)
' Dim oAbsolutePath As String = EDMIPath.GetFullPath(Data.DocumentType, Data.FileName)
' Dim oDirectoryPath = EDMIPath.GetFullPath(Data.DocumentType)
' Try
' Directory.CreateDirectory(oDirectoryPath)
' Dim oVersionedFileName As String = Filesystem.GetVersionedFilename(oAbsolutePath)
' _Logger.Info("ImportFile: Saving file [{0}] to path [{1}]", Data.FileName, oVersionedFileName)
' Using oStream = New FileStream(oVersionedFileName, FileMode.CreateNew)
' oStream.Write(Data.Contents, 0, Data.Contents.Length)
' oStream.Flush(True)
' oStream.Close()
' End Using
' ' insert into db
' Dim oCommand As New SqlCommand("PRIDB_NEW_DOCUMENT")
' oCommand.Parameters.AddWithValue("@OBJ_ST_ID", 1)
' oCommand.Parameters.AddWithValue("@REL_PATH", oRelativePath)
' oCommand.Parameters.AddWithValue("@WHO", _Username)
' oCommand.Parameters.AddWithValue("@REF_DOCID", 0)
' oCommand.Parameters.Add(New SqlParameter("@IDB_OBJ_ID", SqlDbType.BigInt))
' Dim oObjectId = MSSQL_IDB.GetScalarValue(oCommand, "@IDB_OBJ_ID")
' Return New DocumentImportResponse() With {.ObjectId = oObjectId}
' Catch ex As FaultException
' _Logger.Error(ex)
' Throw ex
' Catch ex As Exception
' _Logger.Error(ex)
' Throw GetFault(ex)
' End Try
'End Function
Public Function GetFileByObjectId(Data As DocumentStreamRequest) As DocumentStreamResponse Implements IEDMIService.GetFileByObjectId
Try
Dim oFullPath = GetFullPathForObjectId(Data.ObjectId)
If oFullPath = String.Empty Then
Dim oDetails As New ObjectDoesNotExistFault(Data.ObjectId)
_Logger.Warn("GetFileByObjectId: " & oDetails.ErrorMessage)
Throw New FaultException(Of ObjectDoesNotExistFault)(oDetails, oDetails.ErrorMessage)
End If
_Logger.Debug("GetFileByObjectId: Loading file [{0}]", oFullPath)
Dim oFileInfo As New FileInfo(oFullPath)
If Not oFileInfo.Exists Then
Dim oDetails As New ObjectDoesNotExistFault(Data.ObjectId)
_Logger.Warn("GetFileByObjectId: " & oDetails.ErrorMessage)
Throw New FaultException(Of ObjectDoesNotExistFault)(oDetails, oDetails.ErrorMessage)
End If
Dim oDestination As New MemoryStream()
Using oSource As FileStream = IO.File.OpenRead(oFullPath)
oSource.CopyTo(oDestination)
End Using
oDestination.Seek(0, SeekOrigin.Begin)
Dim oMessage As New DocumentStreamResponse() With {
.FileName = oFileInfo.Name,
.FileContents = oDestination
}
Return oMessage
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function GetFileInfoByObjectId(Data As DocumentInfoRequest) As DocumentInfoResponse Implements IEDMIService.GetFileInfoByObjectId
Try
_Logger.Debug("GetFileInfoByObjectId...")
Dim oAccessRight = GetAccessRightForObjectId(Data.UserId, Data.ObjectId)
Dim oFullPath = GetFullPathForObjectId(Data.ObjectId)
If oFullPath = String.Empty Then
Dim oFault As New ObjectDoesNotExistFault(Data.ObjectId)
Throw New FaultException(Of ObjectDoesNotExistFault)(oFault, oFault.ErrorMessage)
End If
Return New DocumentInfoResponse With {
.FileRight = oAccessRight,
.FullPath = oFullPath
}
_Logger.Debug("End GetFileInfoByObjectId!")
Catch ex As FaultException
_Logger.Warn("GetFileInfoByObjectId: " & ex.Message)
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Warn("GetFileInfoByObjectId: " & ex.Message)
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function ListFilesForUser() As DocumentListResponse Implements IEDMIService.ListFilesForUser
Try
Dim oDatatable = GetFileList()
Return New DocumentListResponse() With {
.Datatable = oDatatable
}
Catch ex As FaultException
_Logger.Error(ex)
Throw ex
Catch ex As Exception
_Logger.Error(ex)
Throw GetFault(ex)
End Try
End Function
Public Function GetFileList() As DataTable
Try
If Not GlobalState.TableStore.Tables.Contains(TBIDB_DOC_INFO) Then
_Logger.Warn("GetFileList: Document info table does not exist!")
Return Nothing
End If
Dim oTable As DataTable = GlobalState.TableStore.Tables.Item(TBIDB_DOC_INFO)
Return oTable
Catch ex As Exception
_Logger.Warn("GetFileList: Unexpected Error while getting file list.")
_Logger.Error(ex)
Return Nothing
End Try
End Function
Public Function TestObjectIdExists(Data As TestObjectIdExistsRequest) As TestObjectIdExistsResponse Implements IEDMIService.TestObjectIdExists
Try
Dim oDeleted As Boolean = False
Dim oActive As Boolean = False
If _IDBHelpers.TestObjectIdExists(Data.ObjectId, oDeleted, oActive) = False Then
Return New TestObjectIdExistsResponse(False)
End If
Return New TestObjectIdExistsResponse(True) With {
.Deleted = oDeleted,
.Inactive = Not oActive
}
Catch ex As Exception
_Logger.Error(ex)
Return New TestObjectIdExistsResponse(False)
End Try
End Function
#End Region
#Region "=== Private ==="
Private Function GetFault(Exception As Exception) As FaultException
Dim oFault As New UnexpectedErrorFault(Exception)
Return New FaultException(Of UnexpectedErrorFault)(oFault, New FaultReason(oFault.InnerException.Message))
End Function
Private Function GetFault(ErrorMessage As String) As FaultException
Dim oFault As New UnexpectedErrorFault(New ApplicationException(ErrorMessage))
Return New FaultException(Of UnexpectedErrorFault)(oFault, New FaultReason(oFault.InnerException.Message))
End Function
Private Function GetFullPathForObjectId(ObjectId As Long) As String
Try
If Not GlobalState.TableStore.Tables.Contains(TBIDB_DOC_INFO) Then
_Logger.Warn("GetFullPathForObjectId: Document info table does not exist!")
Return String.Empty
End If
Dim oTable As DataTable = GlobalState.TableStore.Tables.Item(TBIDB_DOC_INFO)
Dim oRows As List(Of DataRow) = oTable.Select($"IDB_OBJ_ID = {ObjectId}").ToList()
Dim oFullPath As String
If oRows.Count = 0 Then
_Logger.Warn("GetFullPathForObjectId: Full path does not exist for object [{0}]", ObjectId)
oFullPath = String.Empty
Else
Dim oRow As DataRow = oRows.First()
oFullPath = oRow.Item("FULL_PATH")
End If
Return oFullPath
Catch ex As Exception
_Logger.Warn("GetFullPathForObjectId: Unexpected Error while getting full path for object [{0}].", ObjectId)
_Logger.Error(ex)
Return String.Empty
End Try
End Function
Private Function GetAccessRightForObjectId(UserId As Long, ObjectId As Long) As AccessRight
Try
If Not GlobalState.TableStore.Tables.Contains(TBIDB_ACCESSRIGHT) Then
_Logger.Warn("GetAccessRightForObjectId: Access right table does not exist!")
Return AccessRight.VIEW_ONLY
End If
_Logger.Debug("Getting AccessRights for ObjectId [{0}]", ObjectId)
Dim oTable As DataTable = GlobalState.TableStore.Tables.Item(TBIDB_ACCESSRIGHT)
Dim oRows As List(Of DataRow) = oTable.Select($"IDB_OBJ_ID = {ObjectId} AND USR_ID = {UserId}").ToList()
Dim oRight As AccessRight
_Logger.Debug("Successfully got AccessRights for ObjectId [{0}]", ObjectId)
_Logger.Debug("Parsing AccessRights for ObjectId [{0}]", ObjectId)
If oRows.Count = 0 Then
_Logger.Warn("GetAccessRightForObjectId: Access right assignment does not exist for user [{0}] on object [{1}]", UserId, ObjectId)
Return AccessRight.VIEW_ONLY
Else
If oRows.Count > 1 Then
_Logger.Warn("GetAccessRightForObjectId: More than one access right assignment found for user [{0}] on object [{1}]", UserId, ObjectId)
End If
Dim oRow As DataRow = oRows.First()
Dim oRightAsInt = oRow.Item("ACCESSRIGHT")
oRight = Utils.ToEnum(Of AccessRight)(oRightAsInt)
End If
_Logger.Debug("Successfully parsed AccessRights for ObjectId [{0}]", ObjectId)
_Logger.Debug("AccessRight for ObjectId [{0}] is [{1}]", ObjectId, oRight.ToString)
Return oRight
Catch ex As Exception
_Logger.Warn("GetAccessRightForObjectId: Unexpected Error while getting access right for object [{0}].", ObjectId)
_Logger.Error(ex)
Return AccessRight.VIEW_ONLY
End Try
End Function
Private Function StripDomainFromUsername(UserName As String)
If UserName.Contains("\") Then
Return UserName.Split("\")(1)
ElseIf UserName.Contains("@") Then
Return UserName.Split("@")(0)
Else
Return UserName
End If
End Function
#End Region
End Class