_territories.vb

EasyObjects 是ORM的典型应用的例子是学习研究的很好的范例

			Return Me.GetInteger(TerritoriesSchema.RegionID.FieldName)
      End Get
        Set(ByVal Value As Integer)
			Me.SetInteger(TerritoriesSchema.RegionID.FieldName, Value)
      End Set
    End Property

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

#End Region

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

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

		Public Overridable Property s_RegionID As String
			Get
				If Me.IsColumnNull(TerritoriesSchema.RegionID.FieldName) Then
					Return String.Empty
				Else
					Return MyBase.GetIntegerAsString(TerritoriesSchema.RegionID.FieldName)
				End If
			End Get
			Set(ByVal Value As String)
				If String.Empty = value Then
					Me.SetColumnNull(TerritoriesSchema.RegionID.FieldName)
				Else
					Me.RegionID = MyBase.SetIntegerAsString(TerritoriesSchema.RegionID.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 TerritoryID() As WhereParameter
				Get
					Dim wp As WhereParameter = New WhereParameter(TerritoriesSchema.TerritoryID)
                    Dim query As NCI.EasyObjects.DynamicQuery = Me._clause._entity.Query
                    query.AddWhereParameter(wp)
					Return wp
				End Get
			End Property

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

			Public ReadOnly Property RegionID() As WhereParameter
				Get
					Dim wp As WhereParameter = New WhereParameter(TerritoriesSchema.RegionID)
                    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 TerritoryID() As WhereParameter 
			Get
				If _TerritoryID_W Is Nothing Then
					_TerritoryID_W = TearOff.TerritoryID
				End If
				Return _TerritoryID_W
			End Get
		End Property

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

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

		Private _TerritoryID_W As WhereParameter = Nothing
		Private _TerritoryDescription_W As WhereParameter = Nothing
		Private _RegionID_W As WhereParameter = Nothing

		Public Sub WhereClauseReset()

		_TerritoryID_W = Nothing
		_TerritoryDescription_W = Nothing
		_RegionID_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 TerritoryID() As AggregateParameter
				Get
					Dim ap As AggregateParameter = New AggregateParameter(TerritoriesSchema.TerritoryID)
                    Dim query As NCI.EasyObjects.DynamicQuery = Me._clause._entity.Query
                    query.AddAggregateParameter(ap)
					Return ap
				End Get
			End Property

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

			Public ReadOnly Property RegionID() As AggregateParameter
				Get
					Dim ap As AggregateParameter = New AggregateParameter(TerritoriesSchema.RegionID)
                    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 TerritoryID() As AggregateParameter 
			Get
				If _TerritoryID_W Is Nothing Then
					_TerritoryID_W = TearOff.TerritoryID
				End If
				Return _TerritoryID_W
			End Get
		End Property

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

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

		Private _TerritoryID_W As AggregateParameter = Nothing
		Private _TerritoryDescription_W As AggregateParameter = Nothing
		Private _RegionID_W As AggregateParameter = Nothing

		Public Sub AggregateClauseReset()

		_TerritoryID_W = Nothing
		_TerritoryDescription_W = Nothing
		_RegionID_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