com.exigen.ie.constrainer.IntValueSelectorMinMax Maven / Gradle / Ivy
package com.exigen.ie.constrainer;
///////////////////////////////////////////////////////////////////////////////
/*
* Copyright Exigen Group 1998, 1999, 2000
* 320 Amboy Ave., Metuchen, NJ, 08840, USA, www.exigengroup.com
*
* The copyright to the computer program(s) herein
* is the property of Exigen Group, USA. All rights reserved.
* The program(s) may be used and/or copied only with
* the written permission of Exigen Group
* or in accordance with the terms and conditions
* stipulated in the agreement/contract under which
* the program(s) have been supplied.
*/
///////////////////////////////////////////////////////////////////////////////
/**
* An implementation of the IntValueSelector interface that
* interchanges the selection of the minimal and maximal values
* from the domain of the variable.
*
* @see GoalInstantiate
* @see GoalGenerate
* @see IntValueSelectorMin
* @see IntValueSelectorMax
*/
public class IntValueSelectorMinMax implements IntValueSelector
{
private boolean _min;
/**
* Default constructor initializes first selection of the
* minimum value from the domain of the variable
*/
public IntValueSelectorMinMax()
{
_min = true;
}
/**
* Returns the minimal or maximal value from the domain of the variable.
*/
public int select(IntVar intvar)
{
int value;
if (_min)
{
_min = false;
value = intvar.min();
}
else
{
_min = true;
value = intvar.max();
}
return value;
}
} // ~IntValueSelectorMinMax