org.geotools.feature.visitor

Class SumAreaVisitor

Object

SumVisitor

SumAreaVisitor

All Implemented Interfaces:

FeatureAttributeVisitor, FeatureCalc, FeatureVisitor

public class SumAreaVisitor
extends SumVisitor

Calculates the Sum of Areas for geometric fields

Author:

Mauro Bartolomeoli

Nested Class Summary

Nested classes/interfaces inherited from class SumVisitor

SumVisitor.SumResult, SumVisitor.SumStrategy

Constructor Summary

Constructors

Constructor and Description
SumAreaVisitor(Expression expr)
SumAreaVisitor(int attributeTypeIndex, SimpleFeatureType type)
SumAreaVisitor(String attrName, SimpleFeatureType type)

Method Summary

Modifier and Type	Method and Description
Optional<List<Class>>	getResultType(List<Class> inputTypes) Returns the expected output type given the input type.
void	visit(Feature feature) Visit the provided feature.
void	visit(SimpleFeature feature)

Methods inherited from class SumVisitor

getExpression, getExpressions, getResult, getSum, init, reset, setStrategy, setValue

Methods inherited from class Object

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

Constructor Detail

SumAreaVisitor

public SumAreaVisitor(Expression expr)
               throws IllegalFilterException

Throws:

IllegalFilterException

SumAreaVisitor

public SumAreaVisitor(int attributeTypeIndex,
                      SimpleFeatureType type)
               throws IllegalFilterException

Throws:

IllegalFilterException

SumAreaVisitor

public SumAreaVisitor(String attrName,
                      SimpleFeatureType type)
               throws IllegalFilterException

Throws:

IllegalFilterException

Method Detail

visit

public void visit(SimpleFeature feature)

Overrides:

visit in class SumVisitor

visit

public void visit(Feature feature)

Description copied from interface: FeatureVisitor

Visit the provided feature.

Please consult the documentation for the FeatureCollection you are visiting to learn more - the provided feature may be invalid, or read only.

Specified by:

visit in interface FeatureVisitor

Overrides:

visit in class SumVisitor

getResultType

public Optional<List<Class>> getResultType(List<Class> inputTypes)

Description copied from interface: FeatureAttributeVisitor

Returns the expected output type given the input type.

Specified by:

getResultType in interface FeatureAttributeVisitor

Overrides:

getResultType in class SumVisitor

Parameters:

inputTypes - The type of the input expressions