org.apache.poi.ss.formula.atp
Class WorkdayCalculator

java.lang.Object
  extended by org.apache.poi.ss.formula.atp.WorkdayCalculator

public class WorkdayCalculator
extends java.lang.Object

A calculator for workdays, considering dates as excel representations.

Author:
jfaenomoto@gmail.com

Field Summary
static WorkdayCalculator instance
           
 
Method Summary
protected  int calculateNonWeekendHolidays(double start, double end, double[] holidays)
          Calculates how many holidays in a list are workdays, considering an interval of dates.
 int calculateWorkdays(double start, double end, double[] holidays)
          Calculate how many workdays are there between a start and an end date, as excel representations, considering a range of holidays.
 java.util.Date calculateWorkdays(double start, int workdays, double[] holidays)
          Calculate the workday past x workdays from a starting date, considering a range of holidays.
protected  boolean isHoliday(double aDate, double[] holidays)
           
protected  boolean isInARange(double start, double end, double aDate)
           
protected  int isNonWorkday(double aDate, double[] holidays)
           
protected  boolean isWeekend(double aDate)
           
protected  int pastDaysOfWeek(double start, double end, int dayOfWeek)
          Calculates how many days of week past between a start and an end date.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

instance

public static final WorkdayCalculator instance
Method Detail

calculateWorkdays

public int calculateWorkdays(double start,
                             double end,
                             double[] holidays)
Calculate how many workdays are there between a start and an end date, as excel representations, considering a range of holidays.

Parameters:
start - start date.
end - end date.
holidays - an array of holidays.
Returns:
number of workdays between start and end dates, including both dates.

calculateWorkdays

public java.util.Date calculateWorkdays(double start,
                                        int workdays,
                                        double[] holidays)
Calculate the workday past x workdays from a starting date, considering a range of holidays.

Parameters:
start - start date.
workdays - number of workdays to be past from starting date.
holidays - an array of holidays.
Returns:
date past x workdays.

pastDaysOfWeek

protected int pastDaysOfWeek(double start,
                             double end,
                             int dayOfWeek)
Calculates how many days of week past between a start and an end date.

Parameters:
start - start date.
end - end date.
dayOfWeek - a day of week as represented by Calendar constants.
Returns:
how many days of week past in this interval.

calculateNonWeekendHolidays

protected int calculateNonWeekendHolidays(double start,
                                          double end,
                                          double[] holidays)
Calculates how many holidays in a list are workdays, considering an interval of dates.

Parameters:
start - start date.
end - end date.
holidays - an array of holidays.
Returns:
number of holidays that occur in workdays, between start and end dates.

isWeekend

protected boolean isWeekend(double aDate)
Parameters:
aDate - a given date.
Returns:
true if date is weekend, false otherwise.

isHoliday

protected boolean isHoliday(double aDate,
                            double[] holidays)
Parameters:
aDate - a given date.
holidays - an array of holidays.
Returns:
true if date is a holiday, false otherwise.

isNonWorkday

protected int isNonWorkday(double aDate,
                           double[] holidays)
Parameters:
aDate - a given date.
holidays - an array of holidays.
Returns:
1 is not a workday, 0 otherwise.

isInARange

protected boolean isInARange(double start,
                             double end,
                             double aDate)
Parameters:
start - start date.
end - end date.
aDate - a date to be analyzed.
Returns:
true if aDate is between start and end dates, false otherwise.


Copyright 2012 The Apache Software Foundation or its licensors, as applicable.