AutoCAD Map 3D 2009 Geospatial Platform Reference

AutoCAD Map 3D Geospatial Platform API

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MgFeatureQueryOptions
AddComputedProperty
AddFeatureProperty
MgFeatureQueryOptions
RemoveComputedProperty
RemoveFeatureProperty
SetBinaryOperator
SetFilter
SetOrderingFilter
SetSpatialFilter
INT32 MgFeatureQueryOptions::AddFeatureProperty ( CREFSTRING  propertyName  ) 

Call this method for each class property whose value you want retrieved by the MgFeatureService::SelectFeatures() call. Not calling this method results in the retrieval of all property values for each feature selected.

.NET Syntax
int AddFeatureProperty(string propertyName);
Java Syntax
int AddFeatureProperty(String propertyName);
PHP Syntax
int AddFeatureProperty(string propertyName);

Parameters:
propertyName (String/string) The name of the class property to be added.
Returns:
Returns the total number of properties added.
Example (PHP) 
 <?php
 $queryOptions->AddFeatureProperty("aDouble");
 $queryOptions->AddFeatureProperty("aSingle");
 $featureService->SelectFeatures($featureSrcResourceId, $featClassName, $queryOptions);
 ?>
 sqlplus> select aDouble,aSingle from featclass;

Exceptions:
MgInvalidArgumentException if property name is empty
Example (C#) 
 using OSGeo.MapGuide;
 private MgFeatureQueryOptions queryOptions;
 private MgFeatureService featureService;
 private String className = "SdfFeatureClass";
 // the SDF file identified by this MgResourceIdentifier exists in the repository
 private MgResourceIdentifier resourceId;
 private MgFeatureReader featureReader;

 resourceId = new MgResourceIdentifier("Library://PlatformApiDocTests/SdfFeatureClass.FeatureSource");
 queryOptions = new MgFeatureQueryOptions();
 queryOptions.AddFeatureProperty("FeatId");
 queryOptions.AddFeatureProperty("anInt16");
 featureReader = featureService.SelectFeatures(resourceId, className, queryOptions);

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