[mapguide-users] Re: Mapguide JavaAjaxViewer Update Features Memory Leak?

[ar_gaeta]

Try this, I launch it from the TaskPane, passing the information MAPNAME and
SESSION.
For me this work well for a shpfile loaded INSIDE the MGOS server (but it's
not transformed in .sdf, it stays shpfile...).


<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<%@ page import="org.osgeo.mapguide.*" %>
<%@ page import="java.util.*" %>
<%@ page import="java.io.*" %>
<%@ page import="java.text.*" %>
<%@ page import="javax.servlet.jsp.*" %>
<%@ page import="javax.servlet.http.*" %>
<%@ include file="../common/common.jsp" %>

<%

String sessionId = request.getParameter("SESSION");
String mapName = request.getParameter("MAPNAME");
String layername = "sensibili_3003";  //name of layer that you want update,
loaded in the map
String newattribute = "hospital";  //new attribute to give to the field
String field = "dest_uso";  //name of field to change

try
    {
	// Initialize web tier with the site configuration file.  The config
    // file should be in the same folder as this script.
    String realpath = getServletContext().getRealPath("/");
	String configPath =  realpath + "webconfig.ini";
    MapGuideJavaApi.MgInitializeWebTier( configPath );
	
    // Get the user information using the session id,
    // and set up a connection to the site server.
    MgUserInformation userInfo = new MgUserInformation(sessionId);
    MgSiteConnection siteConnection = new MgSiteConnection();
    siteConnection.Open(userInfo);

    MgResourceService resourceService=(MgResourceService)
siteConnection.CreateService(MgServiceType.ResourceService);
    MgFeatureService featureService=(MgFeatureService)
siteConnection.CreateService(MgServiceType.FeatureService);
	
	MgMap map = new MgMap(siteConnection);
	map.Open(mapName);
			
	MgLayer layer = (MgLayer)map.GetLayers().GetItem(layername);
						
	// Create a filter containing all the IDs of the features on this layer
        String layerClassName = layer.GetFeatureClassName();
	String layerFeatureId = layer.GetFeatureSourceId();
	String selectionString = "FeatId >= 0";			
	

	//In this way you get directly the ResId of the layer (I mean:
"Library://prova_basic/Data/layername.FeatureSource")
        MgResourceIdentifier fdo = new MgResourceIdentifier(layerFeatureId);
	
        MgPropertyCollection properties = new MgPropertyCollection();
	properties.Add(new MgStringProperty(field, newattribute));
	MgUpdateFeatures updateFeature1 = new MgUpdateFeatures(layername,
properties, selectionString);
	MgFeatureCommandCollection commands = new MgFeatureCommandCollection();
	commands.Add(updateFeature1);
			
	featureService.UpdateFeatures(fdo, commands, false);
	}
	  catch (MgException e)
    {
      out.println("<p><strong>Error:</strong> ");
      out.println(e.GetDetails());
      out.println("</p>");
    }
%>


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