Package org.linuxforhealth.fhir.database.utils.common

Class DateMath

java.lang.Object

org.linuxforhealth.fhir.database.utils.common.DateMath

public class DateMath
extends java.lang.Object

Simple utility class to handle the date arithmetic we need for rolling date-based partitions TODO use java.time instead

Constructor Summary

Constructors

Constructor	Description
DateMath()

Method Summary

Modifier and Type	Method	Description
static java.util.Date	addDays(java.util.Date d, int howMany)	Add howMany days to the given Date
static java.util.Date	addMonths(java.util.Date d, int howMany)	Add howMany months to the given Date
static java.util.Date	addSeconds(java.util.Date d, int howMany)	Add the requested number of seconds to the given date
static java.lang.String	format(java.util.Date d)	Format the date value as yyyy-MM-dd
static java.lang.String	format2(java.util.Date d)	Alternate format of the date value: yyyyMMdd
static java.util.Date	max(java.util.Date d1, java.util.Date d2)	Return the max of 2 dates
static java.util.Date	parse(java.lang.String str)	Parse the date string which is expected to be yyyy-MM-dd
static java.util.Date	truncateToDay(java.util.Date d)	Truncate the date to the beginning of the day
static java.util.Date	truncateToMonth(java.util.Date d)	Truncate the date to the midnight on the first day of the month

Methods inherited from class java.lang.Object

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

Constructor Detail

DateMath

public DateMath()

Method Detail

addDays

public static java.util.Date addDays(java.util.Date d,
                                     int howMany)

Add howMany days to the given Date

Parameters:

d -

howMany -

Returns:

addMonths

public static java.util.Date addMonths(java.util.Date d,
                                       int howMany)

Add howMany months to the given Date

Parameters:

d -

howMany -

Returns:

parse

public static java.util.Date parse(java.lang.String str)

Parse the date string which is expected to be yyyy-MM-dd

Parameters:

str -

Returns:

format

public static java.lang.String format(java.util.Date d)

Format the date value as yyyy-MM-dd

Parameters:

d -

Returns:

format2

public static java.lang.String format2(java.util.Date d)

Alternate format of the date value: yyyyMMdd

Parameters:

d -

Returns:

truncateToMonth

public static java.util.Date truncateToMonth(java.util.Date d)

Truncate the date to the midnight on the first day of the month

Parameters:

d -

Returns:

truncateToDay

public static java.util.Date truncateToDay(java.util.Date d)

Truncate the date to the beginning of the day

Parameters:

d -

Returns:

addSeconds

public static java.util.Date addSeconds(java.util.Date d,
                                        int howMany)

Add the requested number of seconds to the given date

Parameters:

d -

howMany -

Returns:

max

public static java.util.Date max(java.util.Date d1,
                                 java.util.Date d2)

Return the max of 2 dates

Parameters:

d1 -

d2 -

Returns:

max date