Class FeatureSourceStatistics

java.lang.Object

org.tailormap.api.geotools.featuresources.FeatureSourceStatistics

public class FeatureSourceStatistics
extends Object

Calculate statistics (min/max/average/sum) and metadata (count) for an attribute of a feature source.

Method Summary

Modifier and Type	Method	Description
static @NonNull AttributeStatisticsResponse	getFeatureSourceStatistics(@NonNull org.geotools.api.data.SimpleFeatureSource featureSource, @NonNull String attributeName, @Nullable String filterCQL, int progressInterval, @Nullable IntConsumer progressCallback)	Determine statistics for a given attribute of a feature source, optionally filtered by a CQL filter.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getFeatureSourceStatistics

public static @NonNull AttributeStatisticsResponse getFeatureSourceStatistics(@NonNull org.geotools.api.data.SimpleFeatureSource featureSource,
 @NonNull String attributeName,
 @Nullable String filterCQL,
 int progressInterval,
 @Nullable IntConsumer progressCallback)

Determine statistics for a given attribute of a feature source, optionally filtered by a CQL filter. The statistics include min, max, average, sum (for numeric attributes), and count. The method also supports progress reporting via a callback. Don't forget to dispose of the datastore, using e.g. featureSource.getDataStore().dispose();

Parameters:

featureSource - the feature source to calculate statistics for

attributeName - the name of the attribute to calculate statistics for

filterCQL - an optional CQL filter to apply to the feature source

progressInterval - the interval at which to report progress, must be greater than 0

progressCallback - an optional callback to report progress

Returns:

a map containing the calculated statistics, the map may be empty