org.geotools.filter.function
Class CustomClassifierFunction

java.lang.Object
  org.geotools.filter.expression.ExpressionAbstract
      org.geotools.filter.DefaultExpression
          org.geotools.filter.FunctionExpressionImpl
              org.geotools.filter.function.ClassificationFunction
                  org.geotools.filter.function.CustomClassifierFunction

All Implemented Interfaces:

org.opengis.filter.expression.Expression, Expression, ExpressionType, Factory, org.opengis.filter.expression.Function, FunctionExpression

public class CustomClassifierFunction

extends ClassificationFunction

This is a sort of mock-classifier. It contains pre-defined ranges/explicit values for the classification function, and masquerades as a hybrid of the Explicit and Ranged classifiers.

Author:

Cory Horner, Refractions Research Inc.

Field Summary

Fields inherited from class org.geotools.filter.DefaultExpression

expressionType, permissiveConstruction

Fields inherited from interface org.geotools.filter.expression.ExpressionType

ATTRIBUTE, ATTRIBUTE_DOUBLE, ATTRIBUTE_GEOMETRY, ATTRIBUTE_INTEGER, ATTRIBUTE_STRING, ATTRIBUTE_UNDECLARED, FUNCTION, LITERAL_DOUBLE, LITERAL_GEOMETRY, LITERAL_INTEGER, LITERAL_STRING, MATH_ADD, MATH_DIVIDE, MATH_MULTIPLY, MATH_SUBTRACT

Constructor Summary

CustomClassifierFunction()

Method Summary

java.lang.Object	evaluate(Feature feature) Evaluates the expression against an instance of Feature.
java.lang.Object	getMax(int index) Returns the ranged value maximum, or null if not defined.
java.lang.Object	getMin(int index) Returns the ranged value minimum, or null if not defined.
java.lang.String	getName() Gets the name of this function.
java.lang.Object	getValue(int index) Returns the explicit value(s), or null if not defined.
boolean	hasExplicit(int index)
boolean	hasRanged(int index)
void	setExplicitValues(int index, java.lang.Object value)
void	setRangedValues(int index, java.lang.Object min, java.lang.Object max)

Methods inherited from class org.geotools.filter.function.ClassificationFunction

decimalPlaces, fixRound, getArgCount, getArgs, getCollection, getExpression, getNumberOfClasses, getProgressListener, round, setArgs, setCollection, setExpression, setNumberOfClasses, setProgressListener

Methods inherited from class org.geotools.filter.FunctionExpressionImpl

accept, getImplementationHints, getParameters, getType, setName, setParameters

Methods inherited from class org.geotools.filter.DefaultExpression

accept, evaluate, getValue, isAttributeExpression, isExpression, isGeometryExpression, isLiteralExpression, isMathExpression, isMathExpression

Methods inherited from class org.geotools.filter.expression.ExpressionAbstract

eval

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.geotools.filter.expression.FunctionExpression

getType

Methods inherited from interface org.geotools.filter.expression.Expression

accept, getValue

Methods inherited from interface org.opengis.filter.expression.Expression

accept, evaluate

Methods inherited from interface org.geotools.factory.Factory

getImplementationHints

Methods inherited from interface org.opengis.filter.expression.Function

getParameters, setName, setParameters

Constructor Detail

CustomClassifierFunction

public CustomClassifierFunction()

Method Detail

getName

public java.lang.String getName()

Description copied from interface: FunctionExpression

Gets the name of this function.

Specified by:

getName in interface FunctionExpression

Specified by:

getName in class ClassificationFunction

setRangedValues

public void setRangedValues(int index,
                            java.lang.Object min,
                            java.lang.Object max)

setExplicitValues

public void setExplicitValues(int index,
                              java.lang.Object value)

hasRanged

public boolean hasRanged(int index)

hasExplicit

public boolean hasExplicit(int index)

evaluate

public java.lang.Object evaluate(Feature feature)

Description copied from interface: Expression

Evaluates the expression against an instance of Feature.

Specified by:

evaluate in interface Expression

Specified by:

evaluate in class ClassificationFunction

getValue

public java.lang.Object getValue(int index)

Returns the explicit value(s), or null if not defined.

Overrides:

getValue in class ClassificationFunction

getMin

public java.lang.Object getMin(int index)

Returns the ranged value minimum, or null if not defined.

Parameters:

index -

Returns:

getMax

public java.lang.Object getMax(int index)

Returns the ranged value maximum, or null if not defined.

Parameters:

index -

Returns: