org.geotools.filter.function

Class FilterFunction_buffer

Object

ExpressionAbstract

DefaultExpression

FunctionExpressionImpl

FilterFunction_buffer

All Implemented Interfaces:

GeometryTransformation, FunctionExpression, Factory, Expression, Function

public class FilterFunction_buffer
extends FunctionExpressionImpl
implements GeometryTransformation

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_buffer()

Method Summary

Modifier and Type	Method and Description
Object	evaluate(Object feature) Subclass should override, default implementation returns null.
ReferencedEnvelope	invert(ReferencedEnvelope renderingEnvelope) Returns an expanded rendering envelope if the buffering size is not using feature attributes.

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 Function

getFallbackValue, getFunctionName, getName, getParameters

Methods inherited from interface Expression

accept, evaluate

Field Detail

NAME

public static FunctionName NAME

Constructor Detail

FilterFunction_buffer

public FilterFunction_buffer()

Method Detail

evaluate

public Object evaluate(Object feature)

Description copied from class: ExpressionAbstract

Subclass should override, default implementation returns null.

Specified by:

evaluate in interface Expression

Overrides:

evaluate in class FunctionExpressionImpl

Returns:

default implementation returns null

invert

public ReferencedEnvelope invert(ReferencedEnvelope renderingEnvelope)

Returns an expanded rendering envelope if the buffering size is not using feature attributes. If the buffering size is feature dependent the user will have to expand the rendering area via the renderer buffer parameter

Specified by:

invert in interface GeometryTransformation