org.geotools.feature.visitor

Class AbstractCalcResult

Object

AbstractCalcResult

All Implemented Interfaces:

CalcResult

Direct Known Subclasses:

AverageVisitor.AverageResult, BoundsVisitor.BoundsResult, CountVisitor.CountResult, MaxVisitor.MaxResult, MedianVisitor.MedianResult, MinVisitor.MinResult, StandardDeviationVisitor.Result, SumVisitor.SumResult, UniqueVisitor.UniqueResult

public class AbstractCalcResult
extends Object
implements CalcResult

An abstract implementation for CalcResults. Each subclass should implement its own getValue(), merge(), and constructor methods.

Since:

2.2.M2

Author:

Cory Horner, Refractions

Field Summary

Fields inherited from interface CalcResult

NULL_RESULT

Constructor Summary

Constructors

Constructor and Description
AbstractCalcResult()

Method Summary

Modifier and Type	Method and Description
Object	getValue() Actual answer
boolean	isCompatible(CalcResult targetResults) Returns true if the target results is a compatible type with the current results, with compatible meaning that the two results may be merged.
CalcResult	merge(CalcResult resultsToAdd) Returns the merged results of two CalcResult.
Object[]	toArray() Access getValue as an array
double	toDouble() Access getValue as a double
Envelope	toEnvelope() Access getValue as an envelope
float	toFloat() Access getValue as a float
Geometry	toGeometry() Access getValue as a geometry
int	toInt() Access getValue as an int
List	toList() Access getValue as a list
long	toLong() Access getValue as a long
Map	toMap() Access getValue as a map
Point	toPoint() Access getValue as a point
Set	toSet() Access getValue as a set
String	toString() Access getValue as a string
String[]	toStringArray()

Methods inherited from class Object

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

Constructor Detail

AbstractCalcResult

public AbstractCalcResult()

Method Detail

isCompatible

public boolean isCompatible(CalcResult targetResults)

Description copied from interface: CalcResult

Returns true if the target results is a compatible type with the current results, with compatible meaning that the two results may be merged.

Specified by:

isCompatible in interface CalcResult

Parameters:

targetResults - the second CalcResult Object

Returns:

true if the targetResults can be merged with the current results

merge

public CalcResult merge(CalcResult resultsToAdd)

Description copied from interface: CalcResult

Returns the merged results of two CalcResult. The way in which the results are merged is dependent on the type of the results added. A new instance is created containing the merged results.

For example: merging two min functions would return the smaller of the two values; merging a count and a sum would return an average.

Specified by:

merge in interface CalcResult

Returns:

the merged results

getValue

public Object getValue()

Description copied from interface: CalcResult

Actual answer

Specified by:

getValue in interface CalcResult

Returns:

the calculation result as a generic object

toInt

public int toInt()

Description copied from interface: CalcResult

Access getValue as an int

Specified by:

toInt in interface CalcResult

Returns:

the calculation result as a int (or 0 if not applicable)

toDouble

public double toDouble()

Description copied from interface: CalcResult

Access getValue as a double

Specified by:

toDouble in interface CalcResult

Returns:

the calculation result as a double (or 0 if not applicable)

toLong

public long toLong()

Description copied from interface: CalcResult

Access getValue as a long

Specified by:

toLong in interface CalcResult

Returns:

the calculation result as a long (or 0 if not applicable)

toFloat

public float toFloat()

Description copied from interface: CalcResult

Access getValue as a float

Specified by:

toFloat in interface CalcResult

Returns:

the calculation result as a float (or 0 if not applicable)

toGeometry

public Geometry toGeometry()

Description copied from interface: CalcResult

Access getValue as a geometry

Specified by:

toGeometry in interface CalcResult

Returns:

the calculation result as a geometry (or null if not applicable)

toEnvelope

public Envelope toEnvelope()

Description copied from interface: CalcResult

Access getValue as an envelope

Specified by:

toEnvelope in interface CalcResult

Returns:

the calculation result as an envelope (or null if not applicable)

toPoint

public Point toPoint()

Description copied from interface: CalcResult

Access getValue as a point

Specified by:

toPoint in interface CalcResult

Returns:

the calculation result as a point (or null if not applicable)

toSet

public Set toSet()

Description copied from interface: CalcResult

Access getValue as a set

Specified by:

toSet in interface CalcResult

Returns:

the calculation result as a set (or null if not applicable)

toList

public List toList()

Description copied from interface: CalcResult

Access getValue as a list

Specified by:

toList in interface CalcResult

Returns:

the calculation result as a list (or null if not applicable)

toArray

public Object[] toArray()

Description copied from interface: CalcResult

Access getValue as an array

Specified by:

toArray in interface CalcResult

Returns:

the calculation result as an array (or null if not applicable)

toStringArray

public String[] toStringArray()

toMap

public Map toMap()

Description copied from interface: CalcResult

Access getValue as a map

Specified by:

toMap in interface CalcResult

Returns:

the calculation result as a map (or null if not applicable)

toString

public String toString()

Description copied from interface: CalcResult

Access getValue as a string

Specified by:

toString in interface CalcResult

Overrides:

toString in class Object

Returns:

the calculation result as a string (or "" if not applicable)