_
Public Class UserComponent
Inherits ScriptComponentPlus
Public Connections As New Connections(Me)
Public Variables As New Variables(Me)
Public Overrides Sub ProcessInput(ByVal InputID As Integer, ByVal InputName As String, ByVal Buffer As PipelineBuffer, ByVal OutputMap As OutputNameMap)
If InputID = MyBase.ComponentMetaData.InputCollection("Input").ID Then
Input_ProcessInput(New InputBuffer(Me, InputID, True, Buffer, OutputMap))
End If
End Sub
Public Overridable Sub Input_ProcessInput(ByVal Buffer As InputBuffer)
While Buffer.NextRow()
Input_ProcessInputRow(Buffer)
End While
End Sub
Public Overridable Sub Input_ProcessInputRow(ByVal Row As InputBuffer)
End Sub
End Class
Public Class Connections
Dim ParentComponent As ScriptComponent
_
Public Sub New(ByVal Component As ScriptComponent)
ParentComponent = Component
End Sub
End Class
Public Class Variables
Dim ParentComponent As ScriptComponent
_
Public Sub New(ByVal Component As ScriptComponent)
ParentComponent = Component
End Sub
End Class
]]> _
Public Class InputBuffer
Inherits ScriptBufferPlus
Public Sub New(ByVal Component As ScriptComponent, ByVal ObjectID As Integer, ByVal IsInput As Boolean, ByVal Buffer As PipelineBuffer, ByVal OutputMap As OutputNameMap)
MyBase.New(Component, ObjectID, IsInput, Buffer, OutputMap)
End Sub
Public Overrides ReadOnly Property StaticInputColumns() As String()
Get
Return New String() {}
End Get
End Property
Public Overrides ReadOnly Property StaticOutputColumns() As String()
Get
Return New String() {}
End Get
End Property
Public Overloads Function NextRow() As Boolean
NextRow = MyBase.NextRow()
End Function
Public Overloads Function EndOfRowset() As Boolean
EndOfRowset = MyBase.EndOfRowset
End Function
End Class
]]> _
_
_
_
_
Public Class ScriptMain
Inherits UserComponent
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' Constants
Const MapsUrl As String = "http://maps.google.com/maps/feeds/maps/default/full"
Const AclService As String = "http://schemas.google.com/acl/2007#accessControlList"
Private DataColumn As String() = New String() {"Name", "Latitude", "Longitude", "Description"}
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Overrides Sub Input_ProcessInputRow(ByVal Row As InputBuffer)
With Row
' Setup row.
Dim data As String
Dim colsCount As Integer = DataColumn.Length
For colIndex As Integer = 0 To colsCount - 1
If Not String.IsNullOrEmpty(data) Then
data += ","
End If
Dim column As String = Row.Buffer(m_inputIndexes(colIndex)).ToString().Replace("""", """""")
data += String.Format("""{0}""", column)
Next
Call m_sbData.AppendLine(data)
End With
End Sub ' Input_ProcessInputRow
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Overrides Sub PreExecute()
Call MyBase.PreExecute()
Dim input As IDTSInput100 = MyBase.ComponentMetaData.InputCollection(0)
Dim extCols As IDTSExternalMetadataColumnCollection100 = input.ExternalMetadataColumnCollection
' Setup dynamic input columns indexes.
Dim colsCount As Integer = DataColumn.Length
m_inputIndexes = New Integer(colsCount - 1) {}
Dim header() As String = New String(colsCount - 1) {}
For colIndex As Integer = 0 To colsCount - 1
Dim column As IDTSInputColumn100 = input.InputColumnCollection(colIndex)
Dim extColumn As IDTSExternalMetadataColumn100 = extCols.GetObjectByID( _
column.ExternalMetadataColumnID)
header(colIndex) = extColumn.Name.ToLower()
m_inputIndexes(colIndex) = Me.HostComponent.BufferManager.FindColumnByLineageID( _
input.Buffer, _
column.LineageID)
Next
m_sbData = New StringBuilder()
Call m_sbData.AppendLine(String.Join(",", header))
End Sub ' PreExecute
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Overrides Sub PostExecute()
Call MyBase.PostExecute()
' Setup service.
Dim service As Service = New Service("local", "CozyRoc Create Google Map")
Call service.setUserCredentials(Me.Username, Me.Password)
Try
' Retrieve maps list.
Dim mapsList As ArrayList = GetMaps_(service)
' Remove existing destination map (if found).
Dim mapId As String = GetMapId_(mapsList, Me.MapName)
If Not String.IsNullOrEmpty(mapId) Then
' Delete previous map.
Call service.Delete(New Uri(mapId))
End If
' Insert map.
Dim content As String = m_sbData.ToString()
Dim mapEntry As AtomEntry = service.Insert( _
New Uri(MapsUrl), _
New MemoryStream(Encoding.UTF8.GetBytes(content)), _
"text/csv", _
Me.MapName)
If Me.IsPrivateMap Then
' Make map private.
Dim aclLink As AtomLink = mapEntry.Links.FindService(AclService, Nothing)
Call service.Delete(New Uri(aclLink.HRef.Content + "/default"))
End If
Catch ex As Exception
Call FireError_(ex.Message)
End Try
End Sub ' PostExecute
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Function Validate(ByRef errMessage As String) As Boolean
Dim result As Boolean = True
Try
If String.IsNullOrEmpty(Me.Username) Then
Throw New ApplicationException("Specify service user name.")
End If
If String.IsNullOrEmpty(Me.Password) Then
Throw New ApplicationException("Specify service password.")
End If
If String.IsNullOrEmpty(Me.MapName) Then
Throw New ApplicationException("Specify destination map name.")
End If
Dim input As IDTSInput100 = Me.ComponentMetaData.InputCollection(0)
If input.IsAttached AndAlso input.InputColumnCollection.Count < DataColumn.Length Then
Throw New Exception("Map input columns.")
End If
Catch ex As Exception
result = False
errMessage = ex.Message
End Try
Validate = result
End Function 'Validate
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Public Overrides Sub ReinitializeMetaData()
Call MyBase.ReinitializeMetaData()
If MyBase.ComponentMetaData.InputCollection.Count = 0 Then
' At least one input must exist.
Throw New Exception("No inputs.")
End If
Dim input As IDTSInput100 = MyBase.ComponentMetaData.InputCollection(0)
' Cleanup.
input.ExternalMetadataColumnCollection.IsUsed = True
Call input.InputColumnCollection.RemoveAll()
Call input.ExternalMetadataColumnCollection.RemoveAll()
' Setup columns.
Call AddColumn_(input, DataColumn(0), 10)
Call AddColumn_(input, DataColumn(1), 10)
Call AddColumn_(input, DataColumn(2), 10)
Call AddColumn_(input, DataColumn(3), 250)
End Sub ' ReinitializeMetaData
#Region "Properties"
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
_
Public Property Username() As String
Get
Username = m_username
End Get
Set(ByVal value As String)
m_username = value
End Set
End Property ' Username
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
_
_
Public Property Password() As String
Get
Password = m_password
End Get
Set(ByVal value As String)
m_password = value
End Set
End Property ' Password
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
_
_
Public Property IsPrivateMap() As Boolean
Get
IsPrivateMap = m_isPrivateMap
End Get
Set(ByVal value As Boolean)
m_isPrivateMap = value
End Set
End Property ' IsPrivateMap
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
_
Public Property MapName() As String
Get
MapName = m_mapName
End Get
Set(ByVal value As String)
m_mapName = value
End Set
End Property ' MapName
#End Region ' Properties
#Region "Internals"
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Sub FireInformation_(ByVal message As String)
Dim fireAgain As Boolean = False
Call MyBase.ComponentMetaData.FireInformation( _
0, _
"Google Data Source", _
message, _
String.Empty, _
0, _
fireAgain)
End Sub ' FireInformation_
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Sub FireError_(ByVal message As String)
Dim cancel As Boolean = False
Call MyBase.ComponentMetaData.FireError( _
0, _
"Create Google Map", _
message, _
String.Empty, _
0, _
cancel)
End Sub ' FireError_
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Sub AddColumn_(ByVal input As IDTSInput100, ByVal name As String, ByVal length As Integer)
Dim column As IDTSExternalMetadataColumn100 = input.ExternalMetadataColumnCollection.[New]()
column.Name = name
column.DataType = DataType.DT_WSTR
column.Length = length
End Sub ' AddColumn_
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Function GetMaps_(ByVal service As Service) As ArrayList
Dim result As ArrayList = New ArrayList
Dim query As FeedQuery = New FeedQuery(MapsUrl)
query.NumberToRetrieve = 100
Try
Dim feed As AtomFeed = service.Query(query)
While True
Dim itemsCount As Integer = feed.Entries.Count
For itemIndex As Integer = 0 To itemsCount - 1
Dim entry As AtomEntry = feed.Entries(itemIndex)
Call result.Add(entry)
Next
If String.IsNullOrEmpty(feed.NextChunk) Then
' No more data to retrieve.
Exit While
End If
' Setup next query iteration.
query.StartIndex += itemsCount
feed = service.Query(query)
End While
Catch ex As Exception
Call FireError_(ex.Message)
End Try
GetMaps_ = result
End Function ' GetMaps_
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Function GetMapId_(ByVal mapsList As ArrayList, ByVal mapName As String) As String
Dim result As String
Dim itemsCount As Integer = mapsList.Count
For itemIndex As Integer = 0 To itemsCount - 1
Dim entry As AtomEntry = CType(mapsList(itemIndex), AtomEntry)
If entry.Title.Text = mapName Then
' Found map.
result = entry.EditUri.Content
Exit For
End If
Next
GetMapId_ = result
End Function ' GetMapId_
#End Region ' Internals
#Region "Attributes"
Private m_username As String
Private m_password As String
Private m_isPrivateMap As Boolean
Private m_mapName As String
Private m_sbData As StringBuilder
Private m_inputIndexes() As Integer
#End Region ' Attributes
End Class ' ScriptMain
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