org.geotools.feature.visitor
Class UniqueVisitor

java.lang.Object
  org.geotools.feature.visitor.UniqueVisitor

All Implemented Interfaces:

FeatureCalc, FeatureVisitor

public class UniqueVisitor

extends java.lang.Object

implements FeatureCalc

Generates a list of unique values from a collection

Since:

2.2.M2

Author:

Cory Horner, Refractions

Nested Class Summary

static class

UniqueVisitor.UniqueResult

Constructor Summary

UniqueVisitor(Expression expr)

UniqueVisitor(int attributeTypeIndex, FeatureType type)

UniqueVisitor(java.lang.String attrName, FeatureType type)

Method Summary

Expression	getExpression()
CalcResult	getResult() Returns the result of the calculation as a handy object which can be merged and modified.
java.util.Set	getUnique()
void	reset()
void	setValue(java.lang.Object newSet)
void	visit(Feature feature)

Methods inherited from class java.lang.Object

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

Constructor Detail

UniqueVisitor

public UniqueVisitor(int attributeTypeIndex,
                     FeatureType type)
              throws IllegalFilterException

UniqueVisitor

public UniqueVisitor(java.lang.String attrName,
                     FeatureType type)
              throws IllegalFilterException

UniqueVisitor

public UniqueVisitor(Expression expr)

Method Detail

visit

public void visit(Feature feature)

Specified by:

visit in interface FeatureVisitor

getExpression

public Expression getExpression()

getUnique

public java.util.Set getUnique()

setValue

public void setValue(java.lang.Object newSet)

reset

public void reset()

getResult

public CalcResult getResult()

Description copied from interface: FeatureCalc

Returns the result of the calculation as a handy object which can be merged and modified.

Specified by:

getResult in interface FeatureCalc

Returns:

the results of the calculation