// Create a temporary feature source to draw
the lines on

// Create a feature class definition for the
new feature 

// source

$classDefinition = new MgClassDefinition();

$classDefinition->SetName("Lines");

$classDefinition->SetDescription("Lines to display.");

$geometryPropertyName="SHPGEOM";

$classDefinition->

    SetDefaultGeometryPropertyName( $geometryPropertyName); 

// Create an identify property

$identityProperty = new MgDataPropertyDefinition("KEY");

$identityProperty->SetDataType(MgPropertyType::Int32);

$identityProperty->SetAutoGeneration(true);

$identityProperty->SetReadOnly(true);   

// Add the identity property to the class
definition

$classDefinition->GetIdentityProperties()->

    Add($identityProperty);

$classDefinition->GetProperties()->Add($identityProperty);

// Create a name property

$nameProperty = new MgDataPropertyDefinition("NAME");

$nameProperty->SetDataType(MgPropertyType::String); 

// Add the name property to the class definition

$classDefinition->GetProperties()->Add($nameProperty);

// Create a geometry property

$geometryProperty = new 

    MgGeometricPropertyDefinition($geometryPropertyName);   

$geometryProperty->

    SetGeometryTypes(MgFeatureGeometricType::Surface);  

// Add the geometry property to the class
definition

$classDefinition->GetProperties()->Add($geometryProperty); 

// Create a feature schema

$featureSchema = new MgFeatureSchema("SHP_Schema", 

    "Line schema");

// Add the feature schema to the class definition

$featureSchema->GetClasses()->Add($classDefinition);             

// Create the feature source

$wkt = $map->GetMapSRS();

$sdfParams = new MgCreateSdfParams("spatial context", 

    $wkt, $featureSchema);  

$featureService->CreateFeatureSource($resourceIdentifier, 

    $sdfParams);