org.geotools.filter.function

Class FilterFunction_octagonalEnvelope

Object

ExpressionAbstract

DefaultExpression

FunctionExpressionImpl

FilterFunction_octagonalEnvelope

All Implemented Interfaces:

Factory, FunctionExpression, Expression, Function

public class FilterFunction_octagonalEnvelope
extends FunctionExpressionImpl

A FilterFunction that expects a Geometry and returns it's octagonal envelope.

Author:

Jared Erickson

Module:

modules/library/main (gt-main.jar)

Source repository:

http://svn.osgeo.org/geotools/trunk/modules/library/main/src/main/java/org/geotools/filter/function/FilterFunction_octagonalEnvelope.java

Field Summary

Fields

Modifier and Type	Field and Description
static FunctionName	NAME

Fields inherited from class FunctionExpressionImpl

fallback, functionName, name, params

Fields inherited from interface Expression

NIL

Constructor Summary

Constructors

Constructor and Description
FilterFunction_octagonalEnvelope() Create a new FilterFunction_octagonalEnvelope instance

Method Summary

Modifier and Type	Method and Description
Object	evaluate(Object feature) Calculate the Geometry's octagonal envelope.

Methods inherited from class FunctionExpressionImpl

accept, equals, functionName, getExpression, getFallbackValue, getFunctionName, getImplementationHints, getName, getParameters, hashCode, setFallbackValue, setParameters, toString

Methods inherited from class DefaultExpression

isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression

Methods inherited from class ExpressionAbstract

evaluate

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Expression

evaluate

Field Detail

NAME

public static FunctionName NAME

Constructor Detail

FilterFunction_octagonalEnvelope

public FilterFunction_octagonalEnvelope()

Create a new FilterFunction_octagonalEnvelope instance

Method Detail

evaluate

public Object evaluate(Object feature)

Calculate the Geometry's octagonal envelope.

Specified by:

evaluate in interface Expression

Overrides:

evaluate in class FunctionExpressionImpl

Parameters:

feature - The feature should be a Geometry

Returns:

The octagonal envelope Geometry

Throws:

IllegalArgumentException - if the feature is not a Geometry