[GIS] How does Quantum GIS work with ArcGIS XML files

arcgis-10.1importqgisxml

I'm not familiar to Quantum GIS, so can anyone explain if it is possible to import/export XML files in Quantum GIS? If it is possible, how can I do that?

I exported some xml recordset and workspace files from ArcGIS and I'm curios if I can open those files in Quantum GIS.

I use ArcGIS 10.1 and Quantum GIS 1.8.0

Best Answer

ArcGIS XML is not a valid data source for QGIS and so you can't import or export it. KML, a variety of XML, is. My thought is to use Python to parse your XML into KML(s) files. QGIS GDAL/OGR could convert that to whatever you like, for instance Spatialite or PostGIS.

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[GIS] Handling XML from within ArcGIS Server environment

why dont you use ArcGIS SOAP or REST service interfaces. it already gives you what you want... it has query field which returns the result as html,json,kmz and amf too..

you can check out some service here, at least in terms of giving an idea...

This is an example service link, will return you id:129 object properties:

http://server.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_Unemployment_Rate/MapServer/1/query?text=129&geometry=&geometryType=esriGeometryPoint&inSR=&spatialRel=esriSpatialRelIntersects&relationParam=&objectIds=&where=&time=&returnCountOnly=false&returnIdsOnly=false&returnGeometry=true&maxAllowableOffset=&outSR=&outFields=&f=pjson

ArcObjects Export XML – How to Export Only Some Feature Classes to XML Using ArcObjects

Instead of getting the dataset:

// Retrieve the first feature dataset from the workspace.
IEnumDatasetName enumDatasetName = workspace.get_DatasetNames
    (esriDatasetType.esriDTFeatureDataset);

You can get the feature class by:

IEnumDatasetName enumDatasetName = workspace.get_DatasetNames(esriDatasetType.esriDTFeatureClass);

See this thread:

Exporting/importing a geodatabase feature class to an XML file

UPDATE

You can get fc names within geodatabase/feature dataset using this code (solution in VB.NET):

Sub TestGetContents()

        Try
            Dim pGxApp As IGxApplication
            Dim Type As System.Type = System.Type.GetTypeFromCLSID(GetType(ESRI.ArcGIS.Framework.AppRefClass).GUID)
            pGxApp = TryCast(Activator.CreateInstance(Type), ESRI.ArcGIS.CatalogUI.IGxApplication)
            'select geodatabase in Catalog tree
            If Not TypeOf pGxApp.SelectedObject Is IGxDatabase Then
                Debug.Print("select a geodb first")
                Exit Sub
            End If
            Dim c As Collection
            c = GetContents(pGxApp.SelectedObject)
            Dim l As Long
            For l = 1 To c.Count
                Dim pName As IName
                pName = c.Item(l)
                If TypeOf pName Is IFeatureClassName Then
                    Dim pFC As IFeatureClass
                    pFC = pName.Open
                    MessageBox.Show(pFC.AliasName)

                ElseIf TypeOf pName Is IFeatureDatasetName Then
                    Dim pDSName As IDatasetName
                    pDSName = pName
                    MessageBox.Show(pDSName.Name)

                End If
            Next l
        Catch ex As Exception
            MessageBox.Show("Caught an unspecified error in the calling code: " & vbCrLf & ex.ToString)
        End Try

    End Sub


    Function GetContents(ByVal pGxDB As IGxDatabase) As Collection

        Try
            Dim c As New Collection
            Dim pEnumDSName As IEnumDatasetName
            pEnumDSName = pGxDB.Workspace.DatasetNames(esriDatasetType.esriDTAny)
            Dim pDSName As IDatasetName
            pDSName = pEnumDSName.Next
            Do Until pDSName Is Nothing
                If TypeOf pDSName Is IFeatureClassName Then
                    c.Add(pDSName)
                ElseIf TypeOf pDSName Is IFeatureDatasetName Then
                    c.Add(pDSName)
                    AddSubNames(pDSName, c)
                End If
                pDSName = pEnumDSName.Next
            Loop
            GetContents = c
        Catch ex As Exception
            MessageBox.Show("Caught an unspecified error in the calling code: " & vbCrLf & ex.ToString)
        End Try

    End Function

    Sub AddSubNames(ByVal pDSName1 As IDatasetName, ByVal c As Collection)
        Try
            Dim pEnumDSName As IEnumDatasetName
            pEnumDSName = pDSName1.SubsetNames
            pEnumDSName.Reset()
            Dim pDSName2 As IDatasetName
            pDSName2 = pEnumDSName.Next
            Do Until pDSName2 Is Nothing
                If TypeOf pDSName2 Is IFeatureClassName Then
                    c.Add(pDSName2)
                End If
                pDSName2 = pEnumDSName.Next
            Loop
        Catch ex As Exception
            MessageBox.Show("Caught an unspecified error in the calling code: " & vbCrLf & ex.ToString)
        End Try

    End Sub

Code referenced from this post:

ArcObjects - enumerating feature classes and datasets within a geodatabase

Best Answer

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