_customerdemographics.vb

EasyObjects 是ORM的典型应用的例子是学习研究的很好的范例

    End Function

    Private Sub CreateParameters(ByVal db As Database, ByVal dbCommand As DbCommand)
		
		db.AddInParameter(dbCommand, "CustomerTypeID", DbType.StringFixedLength, "CustomerTypeID", DataRowVersion.Current)
		db.AddInParameter(dbCommand, "CustomerDesc", DbType.String, "CustomerDesc", DataRowVersion.Current)

    End Sub

#Region " Properties "

	Public Overridable Property CustomerTypeID() As String
        Get
			Return Me.GetString(CustomerDemographicsSchema.CustomerTypeID.FieldName)
      End Get
        Set(ByVal Value As String)
			Me.SetString(CustomerDemographicsSchema.CustomerTypeID.FieldName, Value)
      End Set
    End Property

	Public Overridable Property CustomerDesc() As String
        Get
			Return Me.GetString(CustomerDemographicsSchema.CustomerDesc.FieldName)
      End Get
        Set(ByVal Value As String)
			Me.SetString(CustomerDemographicsSchema.CustomerDesc.FieldName, Value)
      End Set
    End Property

    Public Overrides ReadOnly Property TableName() As String
        Get
            Return "CustomerDemographics"
        End Get
    End Property

#End Region

#Region " String Properties "
		Public Overridable Property s_CustomerTypeID As String
			Get
				If Me.IsColumnNull(CustomerDemographicsSchema.CustomerTypeID.FieldName) Then
					Return String.Empty
				Else
					Return MyBase.GetStringAsString(CustomerDemographicsSchema.CustomerTypeID.FieldName)
				End If
			End Get
			Set(ByVal Value As String)
				If String.Empty = value Then
					Me.SetColumnNull(CustomerDemographicsSchema.CustomerTypeID.FieldName)
				Else
					Me.CustomerTypeID = MyBase.SetStringAsString(CustomerDemographicsSchema.CustomerTypeID.FieldName, Value)
				End If
			End Set
		End Property

		Public Overridable Property s_CustomerDesc As String
			Get
				If Me.IsColumnNull(CustomerDemographicsSchema.CustomerDesc.FieldName) Then
					Return String.Empty
				Else
					Return MyBase.GetStringAsString(CustomerDemographicsSchema.CustomerDesc.FieldName)
				End If
			End Get
			Set(ByVal Value As String)
				If String.Empty = value Then
					Me.SetColumnNull(CustomerDemographicsSchema.CustomerDesc.FieldName)
				Else
					Me.CustomerDesc = MyBase.SetStringAsString(CustomerDemographicsSchema.CustomerDesc.FieldName, Value)
				End If
			End Set
		End Property


#End Region

#Region " Where Clause "
    Public Class WhereClause

        Public Sub New(ByVal entity As EasyObject)
            Me._entity = entity
        End Sub
		
		Public ReadOnly Property TearOff As TearOffWhereParameter
			Get
				If _tearOff Is Nothing Then
					_tearOff = new TearOffWhereParameter(Me)
				End If

				Return _tearOff
			End Get
		End Property

		#Region " TearOff's "
		Public class TearOffWhereParameter
		
			Private _clause as WhereClause
			
			Public Sub New(ByVal clause As WhereClause)
				Me._clause = clause
			End Sub

			Public ReadOnly Property CustomerTypeID() As WhereParameter
				Get
					Dim wp As WhereParameter = New WhereParameter(CustomerDemographicsSchema.CustomerTypeID)
                    Dim query As NCI.EasyObjects.DynamicQuery = Me._clause._entity.Query
                    query.AddWhereParameter(wp)
					Return wp
				End Get
			End Property

			Public ReadOnly Property CustomerDesc() As WhereParameter
				Get
					Dim wp As WhereParameter = New WhereParameter(CustomerDemographicsSchema.CustomerDesc)
                    Dim query As NCI.EasyObjects.DynamicQuery = Me._clause._entity.Query
                    query.AddWhereParameter(wp)
					Return wp
				End Get
			End Property

	End Class
	
	#End Region	

		Public ReadOnly Property CustomerTypeID() As WhereParameter 
			Get
				If _CustomerTypeID_W Is Nothing Then
					_CustomerTypeID_W = TearOff.CustomerTypeID
				End If
				Return _CustomerTypeID_W
			End Get
		End Property

		Public ReadOnly Property CustomerDesc() As WhereParameter 
			Get
				If _CustomerDesc_W Is Nothing Then
					_CustomerDesc_W = TearOff.CustomerDesc
				End If
				Return _CustomerDesc_W
			End Get
		End Property

		Private _CustomerTypeID_W As WhereParameter = Nothing
		Private _CustomerDesc_W As WhereParameter = Nothing

		Public Sub WhereClauseReset()

		_CustomerTypeID_W = Nothing
		_CustomerDesc_W = Nothing
			Me._entity.Query.FlushWhereParameters()

		End Sub
	
		Private _entity As EasyObject
		Private _tearOff As TearOffWhereParameter
    End Class	

	Public ReadOnly Property Where() As WhereClause
		Get
			If _whereClause Is Nothing Then
				_whereClause = New WhereClause(Me)
			End If
	
			Return _whereClause
		End Get
	End Property
	
	Private _whereClause As WhereClause = Nothing	
#End Region	

#Region " Aggregate Clause "
    Public Class AggregateClause

        Public Sub New(ByVal entity As EasyObject)
            Me._entity = entity
        End Sub
		
		Public ReadOnly Property TearOff As TearOffAggregateParameter
			Get
				If _tearOff Is Nothing Then
					_tearOff = new TearOffAggregateParameter(Me)
				End If

				Return _tearOff
			End Get
		End Property

		#Region " TearOff's "
		Public class TearOffAggregateParameter
		
			Private _clause as AggregateClause
			
			Public Sub New(ByVal clause As AggregateClause)
				Me._clause = clause
			End Sub

			Public ReadOnly Property CustomerTypeID() As AggregateParameter
				Get
					Dim ap As AggregateParameter = New AggregateParameter(CustomerDemographicsSchema.CustomerTypeID)
                    Dim query As NCI.EasyObjects.DynamicQuery = Me._clause._entity.Query
                    query.AddAggregateParameter(ap)
					Return ap
				End Get
			End Property

			Public ReadOnly Property CustomerDesc() As AggregateParameter
				Get
					Dim ap As AggregateParameter = New AggregateParameter(CustomerDemographicsSchema.CustomerDesc)
                    Dim query As NCI.EasyObjects.DynamicQuery = Me._clause._entity.Query
                    query.AddAggregateParameter(ap)
					Return ap
				End Get
			End Property

	End Class
	
	#End Region	

		Public ReadOnly Property CustomerTypeID() As AggregateParameter 
			Get
				If _CustomerTypeID_W Is Nothing Then
					_CustomerTypeID_W = TearOff.CustomerTypeID
				End If
				Return _CustomerTypeID_W
			End Get
		End Property

		Public ReadOnly Property CustomerDesc() As AggregateParameter 
			Get
				If _CustomerDesc_W Is Nothing Then
					_CustomerDesc_W = TearOff.CustomerDesc
				End If
				Return _CustomerDesc_W
			End Get
		End Property

		Private _CustomerTypeID_W As AggregateParameter = Nothing
		Private _CustomerDesc_W As AggregateParameter = Nothing

		Public Sub AggregateClauseReset()

		_CustomerTypeID_W = Nothing
		_CustomerDesc_W = Nothing
			Me._entity.Query.FlushAggregateParameters()

		End Sub
	
		Private _entity As EasyObject
		Private _tearOff As TearOffAggregateParameter
    End Class	

	Public ReadOnly Property Aggregate() As AggregateClause
		Get
			If _aggregateClause Is Nothing Then
				_aggregateClause = New AggregateClause(Me)
			End If
	
			Return _aggregateClause
		End Get
	End Property
	
	Private _aggregateClause As AggregateClause = Nothing	
#End Region	

End Class