EDMIAPI: Add DataWithFallback

2021-05-20 16:13:16 +02:00
parent e29c635f41
commit c022872832
3 changed files with 116 additions and 0 deletions
--- a/Modules.EDMIAPI/DataWithFallback.vb
+++ b/Modules.EDMIAPI/DataWithFallback.vb
@@ -0,0 +1,92 @@
+Imports DigitalData.Modules.Database
+Imports DigitalData.Modules.EDMI.API
+Imports DigitalData.Modules.EDMI.API.EDMIServiceReference
+Imports DigitalData.Modules.Logging
+Imports DigitalData.Modules.Language.Utils
+
+Public Class DataWithFallback
+    Private _Logger As Logger
+    Private _Client As Client
+    Private _DatabaseEDM As MSSQLServer
+    Private _DatabaseIDB As MSSQLServer
+    Private _Type As DatabaseType
+
+    Public Enum DatabaseType
+        ECM
+        IDB
+    End Enum
+
+    Public Sub New(LogConfig As LogConfig, Client As Client, DatabaseECM As MSSQLServer, DatabaseIDB As MSSQLServer)
+        _Logger = LogConfig.GetLogger()
+        _Client = Client
+        _DatabaseEDM = DatabaseECM
+        _DatabaseIDB = DatabaseIDB
+    End Sub
+
+    Public Function GetDatatable(DataTable As String, FilterExpression As String, SortByColumn As String, FallbackSQL As String, FallbackType As DatabaseType, Optional ForceFallback As Boolean = False) As DataTable
+        Try
+            Dim oResult As DataTable = Nothing
+
+            If ForceFallback = False Then
+                Dim oTableResult As TableResult = _Client.GetDatatableByName(DataTable, FilterExpression, SortByColumn)
+
+                If oTableResult Is Nothing OrElse oTableResult.OK = False Then
+                    _Logger.Warn("Datatable [{0}] could not be fetched from AppServer Cache. Falling back to direct Database Access.")
+                End If
+
+                Return oTableResult.Table
+            Else
+                Return GetDatatableFromDatabase(FallbackSQL, FallbackType)
+            End If
+        Catch ex As Exception
+            _Logger.Error(ex)
+            Return Nothing
+        End Try
+    End Function
+
+    Private Function GetDatatableFromDatabase(SQLCommand As String, DatabaseType As DatabaseType)
+        Try
+            Select Case DatabaseType
+                Case DatabaseType.ECM
+                    Return _DatabaseEDM.GetDatatable(SQLCommand)
+
+                Case DatabaseType.IDB
+                    Return _DatabaseIDB.GetDatatable(SQLCommand)
+
+                Case Else
+                    Return Nothing
+
+            End Select
+        Catch ex As Exception
+            _Logger.Error(ex)
+            Return Nothing
+
+        End Try
+    End Function
+
+    Public Function GetUserData(UserName As String, ModuleCode As String, Client As Integer) As UserData
+        Dim oSQL = $"SELECT * FROM FNDD_CHECK_USER_MODULE('{UserName}','{ModuleCode}',{Client})"
+        Dim oTable As DataTable = GetDatatable("TBDD_USER_MODULE", $"USERNAME = '{UserName.ToLower}' AND MODULE_SHORT = '{ModuleCode}'", "", oSQL, DatabaseType.ECM)
+
+        If oTable Is Nothing Then
+            Return Nothing
+        End If
+
+        If oTable.Rows.Count = 0 Then
+            Return Nothing
+        End If
+
+        Dim oRow As DataRow = oTable.Rows.Item(0)
+        Dim oUserData As New UserData With {
+            .Id = NotNull(oRow, "USER_ID", -1),
+            .Surname = NotNull(oRow, "USER_SURNAME", String.Empty),
+            .Prename = NotNull(oRow, "USER_PRENAME", String.Empty),
+            .Shortname = NotNull(oRow, "USER_SHORTNAME", String.Empty),
+            .Email = NotNull(oRow, "USER_EMAIL", String.Empty),
+            .Language = NotNull(oRow, "USER_LANGUAGE", "de-DE"),
+            .DateFormat = NotNull(oRow, "USER_DATE_FORMAT", "dd.MM.yyyy")
+        }
+    End Function
+
+End Class
+