Thank you for the suggestion, unfortunately I have just tried and resetting the XML header as discussed does not seem to have made any difference.
I am still getting the same error message in the viewer; The map definition is invalid. The map definition is invalid. Exception occurred in method MgMap.Create at line 303 in file c:\build_tux_area\mgdev\common\service\maplayer\Map.cpp However I have written the MapDefinition XML to file and validated against the MapDefinition Schema and it validates. I have compared the XML produced in my code with an XML document from saved from studio and they also have an identical structure. So I have no idea why the Map Definition is invalid. Carl Grice Keynetix Ltd Tel. +44 (0) 1527 68888 Fax. +44 (0) 1527 62880 Web Site: <http://www.keynetix.com/> http://www.keynetix.com IMPORTANT: Please address all support & sales correspondence <mailto:[EMAIL PROTECTED]> [EMAIL PROTECTED] Addressing support questions to individuals may delay the response. _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kenneth, GEOGRAF A/S Sent: 16 August 2007 12:22 To: MapGuide Users Mail List Subject: Re: [mapguide-users] programmatically add layer to initial map You should insert the "UTF-8" header into the mapDoc. On top of my head it is something like: XmlNode decl = mapDoc.CreateXmlDefinition("1.0", "UTF-8"); mapDoc.Insert(0, decl); You might have to remove an existing xmldefinition. After that, you can get the byte stream, and it will be UTF-8 encoded: MemoryStream xmlStream = new MemoryStream(); mapDoc.Save(xmlStream); If your stream starts with: byte[] { 0xEF 0xBB 0xBF }; you must remove those three bytes. You can then get the byte array by: byte[] utf8EncodedXml = xmlStream.ToArray(); And finally: MgByteSource byteSource = new MgByteSource(utf8EncodedXml , utf8EncodedXml.Length); byteSource.SetMimeType(MgMimeType.Xml); Regards, Kenneth, GEOGRAF A/S Carl skrev: Following the logic below to create a weblayout and mapdefinition by modifying the xml and using SetResource to save the updated xml into the session repository, I am having some problems. Initialize web tier Create a session, and open connection Use GetResource to retrieve the Xml for the WebLayout AND MapDefinition Modify the MapDefinition Xml to your liking (add layers etc.) Save the MapDefinition to the session repository, using SetResource. Update the WebLayout's map resourceid to point towards your modified WebLayout. Save the WebLayout to the session repositiory, using SetResource Start the viewer, pointing at the newly created WebLayout. I am getting an error message 'The map definition is invalid.' when the viewer loads. The following code works no problem and the viewer displays the weblayout and map from the session repository. //Code above for modifying xml for web layout changing map resource and persisting to session MgResourceIdentifier mapResourceID = new MgResourceIdentifier("Library://Demo/Maps/Demo.MapDefinition"); MgByteReader byteRdr2 = resService.GetResourceContent(mapResourceID); String sessMapName = mapResourceID.GetName(); MgResourceIdentifier SessMapResId = new MgResourceIdentifier("Session:" + sessionId + "//" + sessMapName + ".MapDefinition"); resService.SetResource(SessMapResId, byteRdr2, null); //Loads into viewer no problem But as soon as I try to load the map definition xml using SetResource I get the invalid XML error //Code above for modifying xml for web layout changing map resource and persisting to session MgResourceIdentifier mapResourceID = new MgResourceIdentifier("Library://Demo/Maps/Demo.MapDefinition"); MgByteReader byteRdr2 = resService.GetResourceContent(mapResourceID); String sessMapName = mapResourceID.GetName(); String mapResStr = byteRdr2.ToString(); //Load the web layout into an xml document XmlDocument mapDoc = new XmlDocument(); mapDoc.LoadXml(mapResStr); XmlElement mapRoot = mapDoc.DocumentElement; MemoryStream xmlStream = new MemoryStream(); mapDoc.Save(xmlStream); byte[] mapDefinition = xmlStream.ToArray(); Encoding utf8 = Encoding.UTF8; String mapDefStr = new String(utf8.GetChars(mapDefinition)); mapDefinition = new byte[mapDefStr.Length - 1]; int byteCount = utf8.GetBytes(mapDefStr, 1, mapDefStr.Length - 1, mapDefinition, 0); MgByteSource byteSource = new MgByteSource(mapDefinition, mapDefinition.Length); byteSource.SetMimeType(MgMimeType.Xml); //Load the modified map into the session repository MgResourceIdentifier SessMapResId = new MgResourceIdentifier("Session:" + sessionId + "//" + sessMapName + ".MapDefinition"); resService.SetResource(SessMapResId, byteSource.GetReader(), null); //This causes an invalid map error when the viewer loads Any pointers on why manipulating the map definition is causing problems would be great. Using the same techniques I am having no problems manipulating the webDefintion or layerDefinition Thanks Carl Grice Keynetix Ltd Tel. +44 (0) 1527 68888 Fax. +44 (0) 1527 62880 Web Site: http://www.keynetix.com IMPORTANT: Please address all support & sales correspondence [EMAIL PROTECTED] Addressing support questions to individuals may delay the response. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kenneth, GEOGRAF A/S Sent: 13 August 2007 15:16 To: MapGuide Users Mail List Subject: Re: [mapguide-users] programmatically add layer to initial map When the viewer loads, it creates a map from the weblayout/mapdefinition passed. Your runtime map gets overwritten when the viewer starts. Instead you can do this: Initialize web tier Create a session, and open connection Use GetResource to retrieve the Xml for the WebLayout AND MapDefinition Modify the MapDefinition Xml to your liking (add layers etc.) Save the MapDefinition to the session repository, using SetResource. Update the WebLayout's map resourceid to point towards your modified WebLayout. Save the WebLayout to the session repositiory, using SetResource Start the viewer, pointing at the newly created WebLayout. You may of course use the "Library://" repository, if you want the changes to persist. Regards, Kenneth, GEOGRAF A/S Scott, Brian skrev: Hi Carl - What db are you using? I found, for example, that I could not filter at run time against Postgres/PostGIS. I was able to create a whole new layer based on points available in PG, but I had to extact the attributes, create points, then apply them to a new layer. Very cumbersome, but for whatever reason, filtering just wouldn't work w/PostGIS. Good luck! brian -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Carl Grice Sent: Monday, August 13, 2007 10:01 AM To: mapguide-users@lists.osgeo.org Subject: [mapguide-users] programmatically add layer to initial map Hi, I am trying to programmatically filter and add a layer to a map that exists in the repository before the map is initially loaded in the clients viewer. The steps i am performing are as follows; 1)Initialize the web teir and open site 2)Create a new session and open a site connection 3)Use map.create() to create a map from an existing map definition in the repository 4)Create a session resource identifier and use map.Save() to save the existing map into the session repository 5)Use map.Open() to open the map resource just created in the session repository 6)Use map.Getlayers() and insert() to add a new layer into the map 7)use map.save() to save the map with the added layer into the session repository When i debug my code i get no errors and the map displays in the viewer but the added layer does not (even after performing a map refresh). Please can you point me in the direction of a sample that performs a similar task or provide a code example? (I have found similar problems disscussed but cannot find a solution) Thanks in advance. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users
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