[abap] 有关Date的Function

说明：以下是关于星期的函数，输入参数与返回结果说明。

1. GET_WEEK_INFO_BASED_ON_DATE

 输入参数                        值
 DATE                            2010-12-27 

 输出参数                        值
 WEEK                            201052      <—-2010年第52周
 MONDAY                          2010-12-27  <—-这个周周一的日期
 SUNDAY                          2011-01-02  <—-周日的日期

2. DAY_IN_WEEK(输入日期是星期几)
 
 输入参数                        值
 DATUM                           2010-12-28

 输出参数                        值
 WOTNR                           2           <—-2010-12-28为周二 

3. DATE_TO_DAY(输入日期是星期几)
 
 输入参数                        值
 DATUM                           2010-12-28

 输出参数                        值
 WEEKDAY                         TUESDAY           <—-2010-12-28为TUESDAY

4. NEXT_WEEK(下周是星期几)
 
 输入参数                        值
 CURRENT_WEEK                    201012

 输出参数                        值
 NEXT_WEEK                       TUESDAY           <—-2010-12-28为TUESDAY

 MONDAY                          2010-03-29

 SUNDAY                          2010-04-04

 

 

5.WEEK_GET_FIRST_DAY(得到本周的第一天)

CALL FUNCTION 'WEEK_GET_FIRST_DAY'

EXPORTING

week = l_week

IMPORTING

date = it_week-week_dt

EXCEPTIONS

week_invalid = 1

OTHERS = 2.

 

6. DATE_CHECK_PLAUSIBILITY(Check传入日期是否正确)

 

CALL FUNCTION 'DATE_CHECK_PLAUSIBILITY'

EXPORTING

date = it_excel-redat

EXCEPTIONS

plausibility_check_failed = 1

OTHERS = 2.

IF sy-subrc <> 0.

it_err-ecode = '10'.

it_err-evalue = it_excel-redat.

it_err-ereason = 'Release Date is not valid'.

APPEND it_err.

endif.

 

7. RP_CALC_DATE_IN_INTERVAL (年月日相加減)

 

 

CALL FUNCTION 'RP_CALC_DATE_IN_INTERVAL'

EXPORTING

date = l_date

days = '00'

months = p_month

signum = '-'

years = '00'

IMPORTING

calc_date = l_date.

* date为输入的日期，months要加或減的月份，也可以用days or years，signum为运算符号?..