Package org.geotools.feature.visitor

Interface Summary

Interface	Description
CalcResult	Encapsulates the results from a FeatureCalc, and includes methods for obtaining and merging results.
FeatureAttributeVisitor	Extension of FeatureVisitor for visitors that require access to properties of the feature collection being visited.
FeatureCalc	A visitor which performs a calculation on a FeatureCollection.
LimitingVisitor	A visitor that can limit the features that can be visited (for example to implement startOffset, maxFeatures pagination).
SumVisitor.SumStrategy

Class Summary

Class	Description
AbstractCalcResult	An abstract implementation for CalcResults.
AverageVisitor	Calculates the Average
AverageVisitor.AverageResult
BoundsVisitor	Calculates the extents (envelope) of the features it visits.
BoundsVisitor.BoundsResult
CalcUtil
CollectionUtil
CountVisitor	Determines the number of features in the collection
CountVisitor.CountResult
EqualAreaListVisitor	Obtains the data needed for a Equal Area operation (classification of features into classes each roughly having the same area).
GroupByVisitor	Group features by one or several attributes and applies an aggregator visitor to each group.
GroupByVisitor.GroupByRawResult	Helper class that should be used by optimizations to set the results.
GroupByVisitor.GroupByResult	This class implements the feature calculation result of the group by visitor.
GroupByVisitorBuilder	Helper class to help building a valid group by visitor.
IdCollectorFilterVisitor	Gather up all FeatureId strings into a provided HashSet.
IdFinderFilterVisitor	Quick check to see if an ID filter is found.
MaxVisitor	Calculates the maximum value of an attribute.
MaxVisitor.MaxResult
MedianVisitor	Calculates the median of an attribute in all features of a collection
MedianVisitor.MedianResult
MinVisitor	Calculates the minimum value of an attribute.
MinVisitor.MinResult
NearestVisitor	Finds the nearest value to the provided one in the attribute domain.
QuantileListVisitor	Obtains the data needed for a Quantile operation (classification of features into classes of equal size).
StandardDeviationVisitor	Determines the standard deviation.
StandardDeviationVisitor.Result
SumAreaVisitor	Calculates the Sum of Areas for geometric fields
SumVisitor	Calculates the Sum of an attribute (of a FeatureVisitor)
SumVisitor.SumResult
UniqueCountVisitor	Determines the number of unique features in the collection on the basis of the specified feature attribute.
UniqueVisitor	Generates a list of unique values from a collection
UniqueVisitor.UniqueResult

Enum Summary

Enum	Description
Aggregate	Aggregate functions defined for use with the GeoTools library.