[mapguide-users] Help Me

Thu Mar 11 05:07:57 EST 2010

Hi,
iam writing the code for parcel selection ...

i got the $selectxml is null reference.the code seemed to be right...
can anybody tell me what is the problem??????

my code is

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">

<script language="javascript">

       function Zoom1(sel)
	        {
	        var seltext=sel;

	         parent.parent.mapFrame.SetSelectionXML(seltext);
      }

    </script>
<?php
 try
{
   include 'utilityfunctions.php';

$webExtensionsDirectory = 'C:\Program Files\OSGeo\MapGuide\Web\\';

$MapGuideServerDirectory = 'C:\Program Files\OSGeo\MapGuide\Server\\';

$viewerFilesDirectory = $webExtensionsDirectory . 'www\viewerfiles\\';

$schemaDirectory = $MapGuideServerDirectory . 'Schema\\';

$webconfigDirectory = $webExtensionsDirectory . 'www\\';
$webconfigFilePath = $webconfigDirectory . 'webconfig.ini';

 $args =  ($_SERVER['REQUEST_METHOD'] == "POST") ? $_POST : $_GET;
      $sessionId = $args['SESSION'];
echo $sessionId;

MgInitializeWebTier($webconfigFilePath);
 $siteConnection = new MgSiteConnection();
 $userInfo = new MgUserInformation($sessionId);

   $siteConnection->Open($userInfo);
$resourceService =
$siteConnection->CreateService(MgServiceType::ResourceService);

$featureService =
$siteConnection->CreateService(MgServiceType::FeatureService);

      $map = new MgMap();
      $map->Open($resourceService, 'map');

      $layers = $map->GetLayers();

      $count = $layers->GetCount();
      for ($i = 0; $i < $count; $i++)
      {

        $layer = $layers->GetItem($i);

      }
$layerClassName = $layer->GetFeatureClassName();
$selection = new MgSelection($map);

  $FeatureResId = new
MgResourceIdentifier("Library://data/resource.FeatureSource");
$queryOptions = new MgFeatureQueryOptions();
$val="PARCEL";
$val1="44142300003000";

$query=$val . "=" . $val1;

 $queryOptions->SetFilter($query);

  $featureReader =  $layer->SelectFeatures($queryOptions);

		  $selection->AddFeatures($layer, $featureReader, 0);

		  $selectXml = $selection->ToXml();
$selection->Save($resourceService, 'map');
echo  $selectXml;
  }
    catch (MgException $e)
    {
      echo "<p><strong>Error:</strong> ";
      echo $e->GetDetails();
      echo "</p>";
    }
    ?>

<html>
<head>
 <title>Zoom Feature</title>
    <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
    <meta http-equiv="content-script-type" content="text/javascript">
    <meta http-equiv="content-style-type" content="text/css">
    <link href="../styles/globalStyles.css" rel="stylesheet" 
type="text/css">
    <link href="../styles/otherStyles.css" rel="stylesheet" type="text/css">
</head>
<body>

<input type="button" name="button" value="Click" size="10"
onclick="Zoom1(<?php echo  $selectXml;?>)">

</body>
</html>

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