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A common telling is usually, “It's the little factors that get you.” The maxim was definitely true recently in one iSeries shop. I may not possess all the information exactly best, but it appears nobody has been capable to pry any information out of the personal computer. Investigation revealed an unanswered information to QSYSOPR and a queue of tasks eagerly waiting for a possibility to run.

Evidently, the unanswered message supposed to be paid its existence to the reality that some human being got inserted an incorrect date worth into a quick screen. My impact is certainly that this problem came about because of a mixture of sloppy programming and CL'h insufficient date-handling capabilities (mostly the previous).

So I need to caculate date in cl program. Is any way I can caculate date in cl program? /* Calculate new date from current system date. Date-Handling in CL. The system prompts for a range of dates. I’ve added attributes to display invalid date fields in reverse image. The CL program has. To convert the format of a date in a CL procedure, use the Convert Date (CVTDAT) command. The format for the system date is the system value QDATFMT. The included value of QDATFMT varies according to country or region. For example, 062488 is the MDY (monthdayyear) format for June 24 1988. RTVDATE RTNDATE( CL-var) RTNFMT( *JOB. Return the date for 30 days from the current system date: RTVDATE RTNDATE(&INVDUE) DATE(*SYSTEM). RTVDATE RPG IV Program.

This problem could have got been prevented. The program that recognized the consumer's insight could have got authenticated the date. But even that might have not ended up adequate. If the user got keyed a valid, but irrational, date, there might nevertheless have become a problem. In the pursuing sentences I have always been going to offer you with some programs that can switch CL into a decent date-handIer. As for thé careless development, that part's up tó you.

MinimaI CL Date-HandIing CL offers not received any honours for its date-handling ability. Here is definitely a complete list of the CL orders that manage dates. CVTDAT That's not really significantly of a checklist, huh? The Transfer Day (CVTDAT) control was created to transform times from one format to another.

Sincé it chokes ón incorrect times, it can furthermore be utilized to confirm that a variable contains a legitimate date value. Here's a regular illustration that utilizes minimal CL to confirm schedules from a fast screen. When the user demands a record, the system encourages for a variety of times. Generate Some Report 1/12/05 12:00:00 Enter a variety of times.

You may keep the ending date blank if the survey will be to become run for just one day. Starting date.: Stopping date.: Y3=Cancel demand Enter=Generate review Here's. Besides the quick format, there can be a message subfile for mistake messages. Here's the program code for an 0PM CL program.

/./ /. Fast for a variety of schedules and distribute to set./ /./ /. To compiIe:./ /. CRTCLPGM PGM(xxx/JKL002C) SRCFILE(xxx/QCLSRC) SRCMBR(JKL002C)./ /./ pgm dclf JKL002D dcl WBgnDate.char 8 dcl WEndDate.char 8 dcl MsgTxt.char 78 dcl MsgKey.char 4 dcl Sender.char 80 MonMsg cpf0000 exec(GoTo Mistake) Prelims: /. Determine the title of the prógram so the screen./ /. document can research the program information line./ SndPgmMsg msg('/./') ToPgmQ(.same) + MsgType(.details) KeyVar(MsgKey) RcvMsg PgmQ(.same) MsgType(.information) MsgKey(MsgKéy) + Rmv(.yes) Sénder(Sender) ChgVar Vár(PgmNam) VaIue(%SST(Sender 27 10)) RmvMsg Clear(.all) /. cycle until N3 pressed or information is legitimate./ Getlnput: SndF RcdFmt(MSGCTL) SndRcvF RcdFmt(Structure01) If (IN03) Then(Perform) SndPgmMsg Msg('Request was terminated.'

) MsgType(.comp) Return EndDo /. Validate the input. Error text messages move to the subfile./ RmvMsg Crystal clear(.all) CvtDat Daté(SBgnDate) ToVar(WBgnDaté) + FromFmt(.job) ToFmt(.yymd) ToSep(.nothing) If (SEndDate.eq ' ') Then simply(Perform) ChgVar Var(SEndDate) Worth(SBgnDate) EndDo CvtDat Day(SEndDate) ToVar(WEndDate) + FromFmt(.job) ToFmt(.yymd) ToSep(.none) If (WEndDate.lt WBgnDate) After that(Do) SndPgmMsg MsglD(JKL1001) MsgF(JKLMSG) ToPgmQ(.exact same) GoTo GetInput EndDó EndInput: SbmJob Jób(SomeJob) + Cmd(Contact JKL009C (SBgnDate SEndDate)) SndPgmMsg Msg('Your request has long been posted for + developing.' ) MsgType(.comp) Return Mistake: RcvMsg MSGQ(.PgmQ) MsgType(.éxcp) MSG(MsgTxt) MónMsg MsgID(cpf0000) SndPgmMsg MSG(MsgTxt) ToPgmQ(.exact same) MonMsg MsglD(cpf0000) GoTo GetInput EndPgm For this program to operate properly, you'll want a information description. CrtMsgf MsgF(xxx/JKLMSG) AddMsgD MsglD(JKL1001) + MsgF(JKLMSG) + Msg('Closing date must not really become before beginning date.'

) That doesn'capital t look so hard, does it? The CVTDAT commands will generate an escape message, such as CPF05555 (Day not in chosen structure or date not really valid) and CPF0557 (Date too short for specified format) if the consumer tips an incorrect date. The worldwide Monitor Information (MONMSG) control leg techinques in and twigs to the Error regimen, which transmits the information to the program information line, from which the display document retrieves and displays it to the consumer. One would think that any CL developer could at minimum perform this very much to confirm the accuracy of a date. This example also contains one check for reasonableness: the initial date in the range must not really become after the 2nd date in the range.

As soon as the consumer has entered valid schedules, this prógram submits another prógram to group, moving along the schedules as parameters. Since it's achievable that this program could operate from someplace else, such as the work scheduler, the submittéd program should not assume that the times are okay, but should carry out affirmation of its very own. If a date can be found to end up being unacceptable, or perhaps unreasonable, the program can send an get away message to end itself. Pgm (FromDaté ThruDate) dcl FromDaté.char 6 dcl ThruDate.char 6 dcl TempDate.char 6 dcl Abending.lgl monmsg cpf0000 professional(goto Abend) cvtdát date(fromdate) tóvar(tempdate) tosep(.none) cvtdat date(thrudate) tovar(tempdate) tosep(.nothing) call somepgm return /. Schedule to handle unexpected mistakes./ Abend: if Abending after that(come back) chgvar Abending '1' sndpgmmsg msgid(cpf9898) msgf(qcpfmsg) msgtype(.get away) + msgdta('Demand for some statement ended unusually. + See the work journal') endpgm Had the coder, who had written the CL prógram about which l chatted in the introduction, included like a check out, the work queue would not have loaded up with requests.

Robust Date-Handling In several situations a minimal quantity of verification may become adequate, but in other circumstances you may need something more strong. For instance, December 25, 1969, can be a legitimate date, but it may not make sense in some contéxts. If you question a consumer to enter an closing date for sales history query, does it make feeling to allow him to get into some date in the potential? If you really want solid date acceptance, you'll have to perform what I've done, and come up with sométhing of your own.

I had written an RPG component, CLDATERTNS, of daté-handling subprocedures designed with CL in brain. You're free to use it and improve it. The sticking with table lists the subprocedures that I possess selected to include so much. The responses at the beginning will tell you how to produce the component. Subprocedure Fights Return value Description AddDays Time, number Date Add amount of days to a date AddMonths Day, number Time Add number of months to a date AddYears Date, number Time Add amount of decades to a date CurrDate Date Work date CurrMonthBegin Day Initial date of the current 30 days CurrMonthEnd Time Final date of the present month DaysDiff Date, date Number Number of days between 1st and 2nd dates. Beneficial number indicates second date is after 1st date.

Harmful number indicates 2nd date is before very first date. IsNotValidDate Day Logical Accurate if date can be not legitimate, false if date can be valid IsValidDate Date Logical Genuine if date will be valid, false if date will be invalid MonthBegin Time Date First date of a month MonthEnd Date Date Final date of a month PrevMonthBegin Time First date of the earlier 30 days PrevMonthEnd Date Final date of the prior month The dates used by these routines are six-byte personality ideals in job date format. Although I make use of them with.MDY schedules, I possess briefly tested with various other date platforms and the programs appear to work correctly. Amounts are five-digit loaded decimal ideals with no decimal placements. Logical beliefs are usually one-byte éach, with 0 and 1 significance fake and accurate, respectively.

All routines except IsNotValidDate and IsValidDate send out escape message USR2101 if you move them an unacceptable date. The AddDáys, AddMonths, and AddYéars programs send get away message USR2102 if you pass them an invalid loaded decimal case.

Here are the instructions to develop the information document and the communications. Feel free to rename the text messages or place them in another message file. CrtMsgF MsgF(xxx/USRMSG) AddMsgD MsglD(USR2101) MsgF(xxx/USRMSG) Msg('Value '1' is definitely not really a valid date.'

) Fmt((.chár 6)) AddMsgD MsgID(USR2102) MsgF(xxx/USRMSG) Msg('Worth X'1' is usually not a valid decimal value.' ) Fmt((.char 6)) I've made a slight modification to the screen document; I've added qualities to screen unacceptable date areas in reverse picture. The CL program offers changed significantly. The greatest change is that I've replaced one 0PM CL prógram with an lLE program constructed from a CL component and the CLDATERTNS module. As I composed in there are usually good factors to dump OPM CL. The modified CL uses the same basic logic, but the CVTDAT commands are long gone, replaced with phone calls to processes from CLDATERTNS.

Rather than let the worldwide MONMSG choose up exclusions, I've taken control of the approval process. This allows me verify both times for validity in one move; whereas the minimal version halts looking for errors when a date demonstrates invalid. Since I'meters not transferring along the system get away messages, I need a information of my very own. ADDMSGD MSGlD(JKL1003) MSGF(JKLMSG) + MSG('Time 1 is definitely invalid.'

) + Fmt((.CHAR 6)) I've included one extra test. I've added program code to confirm that the times are not really more than 60 times in the last or 30 times in the potential future. The mistake information for this check requires that information JKL1002 be defined in the JKLMSG message file. ADDMSGD MSGlD(JKL1002) MSGF(JKLMSG) + MSG('Schedules must be between 1 and 2.' ) + Fmt((.CHAR 6) (.CHAR 6)) To create the program demands that I first produce the two quests, and then hole them collectively to type a program. The guidelines to create module CLDATERTNS are in the supply code.

Here are the staying ways. CrtCLMod Component(xxx/JKL003C) SrcFile(xxx/QCLSRC) SrcMbr(JKL003C) CrtPgm Pgm(xxx/JKL003) Component(JKL003C CLDATERTNS).

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By publishing my E-mail deal with I verify that I possess examine and recognized the Conditions of Use ánd DCL VAR(SYSDATE) TYPE(.CHAR) LEN(6) DCL VAR(YESTERDAY) Kind(.December) LEN(8 0) DCL VAR(LILIAN) TYPE(.CHAR) LEN(4) DCL VAR(Rubbish1) TYPE(.CHAR) LEN(8) DCL VAR(Rubbish2) Kind(.CHAR) LEN(23) DCL VAR(WDATE) Kind(.CHAR) LEN(8) RTVSYSVAL SYSVAL(QDATE) RTNVAL(SYSDATE) /. Get local period from system: When this call is + full, LILIAN will consist of the number of + days between nowadays and Oct 14, 1582./ CALLPRC PRC(CEELOCT) PARM(LILIAN Rubbish1 JUNK2.OMIT) /. Subtracting 1 from LILIAN will produce last night's date./ CHGVAR VAR(%Rubbish bin(LILIAN)) Worth(%BIN(LILIAN) - 1) /. Switch lillian tó yyymmdd daté./ CALLPRC PRC(CEEDATE) PARM(LlLIAN 'YYYYMMDD' WDATE.0MIT) CHGVAR VAR(YESTERDAY) Worth(WDATE) Be aware: CEELOCT and CEEDATE are usually APIs that can be found on the system; you do not require to develop them. Click MORE Details ON THIS Subject : tips, lessons and even more.

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Re: CL command for timestamp U CAN USE DCL VAR(VAR) Kind(.CHAR) LEN(20) RTVSYSVAL SYSVAL(QDATETIME) RTNVAR(VAR) Right here there no need to get Date and period separately and concatenating. QDATETIME - System date and time. This can be the date and time for the local system time as a one value. Finding or transforming this worth is very similar to retrieving or transforming QDATE and QTlME in a single procedure. The file format of the field is definitely YYYYMMDDHHNNSSXXXXXX where YYYY is the yr, MM is the 30 days, DD is usually the day time, /LEFTHH can be the hrs, NN is the minutes, SS is definitely the seconds, and XXXXXX will be the microseconds. Adjustments made to this system value take impact immediately.