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);