org.openstreetmap.josm.gui.mappaint.mapcss

Class ExpressionFactory.MinMaxFunction

java.lang.Object

org.openstreetmap.josm.gui.mappaint.mapcss.ExpressionFactory.MinMaxFunction

All Implemented Interfaces:

Expression

Enclosing class:

ExpressionFactory

public static class ExpressionFactory.MinMaxFunction
extends java.lang.Object
implements Expression

Computes the maximum/minimum value an arbitrary number of floats, or a list of floats.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.List<Expression>	args
private boolean	computeMax

Constructor Summary

Constructors

Constructor and Description
MinMaxFunction(java.util.List<Expression> args, boolean computeMax) Constructs a new MinMaxFunction.

Method Summary

Modifier and Type	Method and Description
java.lang.Float	aggregateList(java.util.List<?> lst) Compute the minimum / maximum over the list
java.lang.Object	evaluate(Environment env) Evaluate this expression.

Methods inherited from class java.lang.Object

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

Field Detail

args

private final java.util.List<Expression> args

computeMax

private final boolean computeMax

Constructor Detail

MinMaxFunction

public MinMaxFunction(java.util.List<Expression> args,
                      boolean computeMax)

Constructs a new MinMaxFunction.

Parameters:

args - arguments

computeMax - if true, compute max. If false, compute min

Method Detail

aggregateList

public java.lang.Float aggregateList(java.util.List<?> lst)

Compute the minimum / maximum over the list

Parameters:

lst - The list

Returns:

The minimum or maximum depending on computeMax

evaluate

public java.lang.Object evaluate(Environment env)

Description copied from interface: Expression

Evaluate this expression.

Specified by:

evaluate in interface Expression

Parameters:

env - The environment

Returns:

the result of the evaluation, can be a List, String or any primitive type or wrapper classes of a primitive type.