Package com.ibm.fhir.database.utils.common

Class DateMath

java.lang.Object

com.ibm.fhir.database.utils.common.DateMath

public class DateMath
extends 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 Date	addDays(Date d, int howMany)	Add howMany days to the given Date
static Date	addMonths(Date d, int howMany)	Add howMany months to the given Date
static Date	addSeconds(Date d, int howMany)	Add the requested number of seconds to the given date
static String	format(Date d)	Format the date value as yyyy-MM-dd
static String	format2(Date d)	Alternate format of the date value: yyyyMMdd
static Date	max(Date d1, Date d2)	Return the max of 2 dates
static Date	parse(String str)	Parse the date string which is expected to be yyyy-MM-dd
static Date	truncateToDay(Date d)	Truncate the date to the beginning of the day
static Date	truncateToMonth(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 Date addDays(Date d,
                           int howMany)

Add howMany days to the given Date

Parameters:

d -

howMany -

Returns:

addMonths

public static Date addMonths(Date d,
                             int howMany)

Add howMany months to the given Date

Parameters:

d -

howMany -

Returns:

parse

public static Date parse(String str)

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

Parameters:

str -

Returns:

format

public static String format(Date d)

Format the date value as yyyy-MM-dd

Parameters:

d -

Returns:

format2

public static String format2(Date d)

Alternate format of the date value: yyyyMMdd

Parameters:

d -

Returns:

truncateToMonth

public static Date truncateToMonth(Date d)

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

Parameters:

d -

Returns:

truncateToDay

public static Date truncateToDay(Date d)

Truncate the date to the beginning of the day

Parameters:

d -

Returns:

addSeconds

public static Date addSeconds(Date d,
                              int howMany)

Add the requested number of seconds to the given date

Parameters:

d -

howMany -

Returns:

max

public static Date max(Date d1,
                       Date d2)

Return the max of 2 dates

Parameters:

d1 -

d2 -

Returns:

max date