org.geotools.filter.function

Class BandsFunction

Object

ExpressionAbstract

DefaultExpression

FunctionExpressionImpl

BandsFunction

All Implemented Interfaces:

FunctionExpression, Factory, Expression, Function

public class BandsFunction
extends FunctionExpressionImpl

Return the number of bands of the evaluation context, which is supposed to be a coverage, or an object that can be converted to on.

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
BandsFunction()

Method Summary

Modifier and Type	Method and Description
Object	evaluate(Object object) Subclass should override, default implementation returns null.

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

BandsFunction

public BandsFunction()

Method Detail

evaluate

public Object evaluate(Object object)

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