Imports System.Data
Imports System.Data.SqlClient


'''<summary>Datenzugriff auf die Tabelle Parameter</summary>
Public Class Parameter

    '''<summary>gibt einen einzelnen paramter zurück</summary>
    '''<param name="ds">speicher für datenrückgabe</param>
    '''<param name="benutzerNr"></param>
    '''<param name="name"></param>

    Public Shared Sub GetParameter(ByRef ds As DataSet, ByVal benutzerNr As Integer, ByVal name As String)
        Dim sqlConn As New SqlConnection()
        Dim sqlCmd As New SqlCommand()
        Dim da As New SqlDataAdapter()

        Try
            sqlConn.ConnectionString = Common.Datenbank.GetDSN()
            sqlCmd.CommandText = "sp_GetParameter"
            sqlCmd.CommandType = CommandType.StoredProcedure
            sqlCmd.Connection = sqlConn

            sqlCmd.Parameters.Add(New SqlParameter("@BenutzerNr", benutzerNr))
            sqlCmd.Parameters.Add(New SqlParameter("@Name", name))
            da.SelectCommand = sqlCmd
            da.Fill(ds, "Parameter")

        Catch ex As Exception
            TKBLib.Errorhandling.TraceHelper.Msg("EDOKALib.DA.Parameter.GetParameter", ex.Message + " " + ex.StackTrace, TraceLevel.Error)
            Throw ex
        Finally
            sqlConn.Dispose()
            sqlCmd.Dispose()
            da.Dispose()
        End Try
    End Sub


    '''<summary>gibt eine liste aller paramter zurück</summary>
    '''<param name="ds">speicher für datenrückgabe</param>
    '''<param name="aktiv">1 nur aktive; 0 nur inaktive; -1 alle</param>

    Public Shared Sub List(ByRef ds As DataSet, ByVal aktiv As Integer)
        Dim sqlConn As New SqlConnection()
        Dim sqlCmd As New SqlCommand()
        Dim da As New SqlDataAdapter()

        Try
            sqlConn.ConnectionString = Common.Datenbank.GetDSN()
            sqlCmd.CommandText = "sp_ListParameter"
            sqlCmd.CommandType = CommandType.StoredProcedure
            sqlCmd.Connection = sqlConn

            If aktiv <> -1 Then
                sqlCmd.Parameters.Add(New SqlParameter("@Aktiv", aktiv))
            End If

            da.SelectCommand = sqlCmd
            da.Fill(ds, "Parameters")

        Catch ex As Exception
            TKBLib.Errorhandling.TraceHelper.Msg("EDOKALib.DA.Parameter.List", ex.Message + " " + ex.StackTrace, TraceLevel.Error)
            Throw ex
        Finally
            sqlConn.Dispose()
            sqlCmd.Dispose()
            da.Dispose()
        End Try
    End Sub


    '''<summary>erstellt einen neuen parameter</summary>
    '''<param name="parameterId">gibt den neuen primary key zurück</param>
    '''<param name="benutzerNr"></param>
    '''<param name="name"></param>
    '''<param name="wert"></param>
    '''<param name="datentyp"></param>
    '''<param name="beschreibung"></param>
    '''<param name="aktiv"></param>
    '''<param name="mutiererId"></param>
    '''<returns>error</returns>
    Public Shared Function Add(ByRef parameterId As Integer, ByVal benutzerNr As Integer, ByVal name As String, ByVal wert As String, _
            ByVal datentyp As Integer, ByVal beschreibung As String, ByVal aktiv As Boolean, ByVal mutiererId As Integer) As Integer

        Dim sqlConn As New SqlConnection()
        Dim sqlCmd As New SqlCommand()

        Try
            sqlConn.ConnectionString = Common.Datenbank.GetDSN()
            sqlCmd.CommandText = "sp_InsParameter"
            sqlCmd.CommandType = CommandType.StoredProcedure
            sqlCmd.Connection = sqlConn

            sqlCmd.Parameters.Add(New SqlParameter("@BenutzerNr", benutzerNr))
            sqlCmd.Parameters.Add(New SqlParameter("@Name", name))
            sqlCmd.Parameters.Add(New SqlParameter("@Wert", wert))
            sqlCmd.Parameters.Add(New SqlParameter("@Datentyp", datentyp))
            sqlCmd.Parameters.Add(New SqlParameter("@Beschreibung", beschreibung))
            sqlCmd.Parameters.Add(New SqlParameter("@Aktiv", aktiv))
            sqlCmd.Parameters.Add(New SqlParameter("@MutiererId", mutiererId))
            sqlCmd.Parameters.Add(New SqlParameter("@ParameterId", 0))
            sqlCmd.Parameters.Add(New SqlParameter("@Return", DBNull.Value))
            sqlCmd.Parameters("@ParameterId").Direction = ParameterDirection.Output
            sqlCmd.Parameters("@Return").Direction = ParameterDirection.ReturnValue

            sqlConn.Open()
            sqlCmd.ExecuteNonQuery()

            If CInt(sqlCmd.Parameters("@Return").Value) <> 0 Then
                parameterId = CInt(sqlCmd.Parameters("@ParameterId").Value)
            End If

            Return CInt(sqlCmd.Parameters("@Return").Value)

        Catch ex As Exception
            TKBLib.Errorhandling.TraceHelper.Msg("EDOKALib.DA.Parameter.Add", ex.Message + " " + ex.StackTrace, TraceLevel.Error)
            Throw ex
        Finally
            sqlConn.Dispose()
            sqlCmd.Dispose()
        End Try
    End Function


    '''<summary>löscht einen parameter</summary>
    '''<param name="benutzerNr"></param>
    '''<param name="name"></param>
    '''<returns>error</returns>
    Public Shared Function Delete(ByVal benutzerNr As Integer, ByVal name As String) As Integer
        Dim sqlConn As New SqlConnection()
        Dim sqlCmd As New SqlCommand()

        Try
            sqlConn.ConnectionString = Common.Datenbank.GetDSN()
            sqlCmd.CommandText = "sp_DelParameter"
            sqlCmd.CommandType = CommandType.StoredProcedure
            sqlCmd.Connection = sqlConn

            sqlCmd.Parameters.Add(New SqlParameter("@BenutzerNr", benutzerNr))
            sqlCmd.Parameters.Add(New SqlParameter("@Name", name))
            sqlCmd.Parameters.Add(New SqlParameter("@Return", DBNull.Value))
            sqlCmd.Parameters("@Return").Direction = ParameterDirection.ReturnValue

            sqlConn.Open()
            sqlCmd.ExecuteNonQuery()

            Return CInt(sqlCmd.Parameters("@Return").Value)

        Catch ex As Exception
            TKBLib.Errorhandling.TraceHelper.Msg("EDOKALib.DA.Parameter.Delete", ex.Message + " " + ex.StackTrace, TraceLevel.Error)
            Throw ex
        Finally
            sqlConn.Dispose()
            sqlCmd.Dispose()
        End Try
    End Function


    '''<summary>aktualisiert einen paramter</summary>
    '''<param name="benutzerNr">criterium (keine aktualisierung)</param>
    '''<param name="name">criterium (keine aktualisierung)</param>
    '''<param name="wert"></param>
    '''<param name="datentyp"></param>
    '''<param name="beschreibung"></param>
    '''<param name="aktiv"></param>
    '''<param name="mutiererId"></param>
    '''<returns>error</returns>
    Public Shared Function Update(ByVal benutzerNr As Integer, ByVal name As String, ByVal wert As String, ByVal datentyp As Integer, _
            ByVal beschreibung As String, ByVal aktiv As Boolean, ByVal mutiererId As Integer) As Integer


        Dim sqlConn As New SqlConnection()
        Dim sqlCmd As New SqlCommand()

        Try
            sqlConn.ConnectionString = Common.Datenbank.GetDSN()
            sqlCmd.CommandText = "sp_SetParameter"
            sqlCmd.CommandType = CommandType.StoredProcedure
            sqlCmd.Connection = sqlConn

            sqlCmd.Parameters.Add(New SqlParameter("@BenutzerNr", benutzerNr))
            sqlCmd.Parameters.Add(New SqlParameter("@Name", name))
            sqlCmd.Parameters.Add(New SqlParameter("@Wert", wert))
            sqlCmd.Parameters.Add(New SqlParameter("@Datentyp", datentyp))
            sqlCmd.Parameters.Add(New SqlParameter("@Beschreibung", beschreibung))
            sqlCmd.Parameters.Add(New SqlParameter("@Aktiv", aktiv))
            sqlCmd.Parameters.Add(New SqlParameter("@MutiererId", mutiererId))
            sqlCmd.Parameters.Add(New SqlParameter("@Return", DBNull.Value))
            sqlCmd.Parameters("@Return").Direction = ParameterDirection.ReturnValue

            sqlConn.Open()
            sqlCmd.ExecuteNonQuery()

            Return CInt(sqlCmd.Parameters("@Return").Value)

        Catch ex As Exception
            TKBLib.Errorhandling.TraceHelper.Msg("EDOKALib.DA.Parameter.Update", ex.Message + " " + ex.StackTrace, TraceLevel.Error)
            Throw ex
        Finally
            sqlConn.Dispose()
            sqlCmd.Dispose()
        End Try
    End Function

End Class