persian date

Hi Paul,

More info on what I did:
My server/PC is localozed to persian and also the timezone.

I created the ff. customized functions:

<!--- substitutes the Now() function in CF --->
<cffunction access="public" name="global_Now" output="No" returntype="date">
<cfscript>

var utcNow=DateConvert("local2utc",Now());

</cfscript>
<cfreturn utcNow>
</cffunction>

<!--- this will make a call to your i18nDateTImeFormat --->
<cffunction access="public" name="global_DateTimeFormat" output="no" returntype="string">
<cfargument name="thisDate" required="yes" type="date">
<cfargument name="thisDateFormat" default="LONG" required="No" type="string">
<cfargument name="thisTimeFormat" default="LONG" required="No" type="string">

<cfscript>

var lstStandardDateTimeFormats = "FULL,LONG,MEDIUM,SHORT";
var nDateFormat=1;
var nTimeFormat=1;

if(ListFindNoCase(lstStandardDateTimeFormats,arguments.thisDateFormat,","))
{
nDateFormat=ListFindNoCase(lstStandardDateTimeFormats,arguments.thisDateFormat,",")-1;
}
else
{
nDateFormat=1;
}
if(ListFindNoCase(lstStandardDateTimeFormats,arguments.thisTimeFormat,","))
{
nTimeFormat=ListFindNoCase(lstStandardDateTimeFormats,arguments.thisTimeFormat,",")-1;
}
else
{
nTimeFormat=1;
}

sDateTime=thisCalendar.i18nDateTimeFormat(thisDate=arguments.thisDate,thisLocale=theLocale,thisDateFormat=nDateFormat,thisTimeFormat=nTimeFormat);

</cfscript>

<cfreturn sDateTime>
</cffunction>

--------------------------------------------------------------------------------------
This is the code that tries to display the persian datetime:

#global_DateTimeFormat(global_Now(),"FULL","FULL")#

The code above returns the GMT+00:00.


However, when i try to directly call your method like this one below:

<cfscript>

thisDate=DateConvert("local2UTC",now());
sDateTime=thisCalendar.i18nDateTimeFormat(thisDate=thisDate,thisLocale="fa_IR",thisDateFormat=0,thisTimeFormat=0);
</cfscript>
<cfoutput>
#sDateTime#
</cfoutput>

This gave me the correct output. Is there anything worng with creating my own functions that calls your methods in your cfc? The reason I'm doing this is I have an existing English application that is based on Gregorian dates that I need to convert to Persian. And in order to avoid more hassles on the changes, I want to retain the parameters passed the way CF does and only need to change the function names(e.g. DateFormat becomes global_DateFormat with parameters passed unchanged). Thanks.

quote:

---

Originally posted by: Newsgroup User
dongzky wrote:
> How do I use your cfc to return a persian date object? I mean in your testbed,

why? as i explained before you're better off storing gregorian datetime objects
(or better yet epoch offsets which is the underlying value for all icu4j
calendars & all my calendar CFCs).

---

Oh, I see. Thanks.

It could be that the class/method is by default meant for java apps, that's why it never bothered to subtract 1. Coz, if it did, then when a java app passes 0(first month), it would become -1 and would throw an error. In cf, that wouldn't be the case though since month number starts from 1.

I really appreciate the help. I'll be looking more also into this class and do some tests. And if I need help again, I'll be keeping this thread up again. :)
Thanks.

dongzky wrote:
> I am wrong, but the date base(I mean the basis for date conversion) is the
> gregorian date right? Which means, whatever date I input, the cf app(or maybe

no, it's based on cf(java) datetime, which happens to be gregorian calendar
based (actually it's decimals days since 31-dec-1899 like exel & db2).

> let the app know that the input date is already a Persian date. Any insights,
> ideas or suggestions on this. Thanks.

store your dates as cf datetimes or better yet as java epoch offsets (you will
eventually run into timezone issues if you have to support clients in multiple TZ).

i don't have any time right now to rework the persian calendar CFC so add the
method below to the CFC, it converts jalali calendar datetimes to gregorian
calendar datetimes. just be aware that cf sees all datetimes as being in the
server's TZ.


<cffunction name="jalaliToGregorian" access="public" output="false"
returntype="date" hint="converts Jalali calendar date to gregorian calendar date">
<cfargument name="jalaliYear" type="Numeric" required="true" hint="jalali year">
<cfargument name="jalaliMonth" type="Numeric" required="true" hint="jalali month">
<cfargument name="jalaliDay" type="Numeric" required="true" hint="jalali day">
<cfargument name="hours" type="Numeric" required="false" default=0>
<cfargument name="minutes" type="Numeric" required="false" default=0>
<cfargument name="seconds" type="Numeric" required="false" default=0>
<cfset var gregorianDate="">
<cfset var pc=createObject("java","com.ghasemkiani.util.SimplePersianCalendar")>
<cfset
pc.setDateFields(javaCast("int",arguments.jalaliYear),javaCast("int",arguments.jalaliMonth),javaCast("int",arguments.jalaliDay))>
<cfset gregorianDate=pc.getTime()>
<cfset
gregorianDate=createDateTime(year(gregorianDate),month(gregorianDate),day(gregorianDate),arguments.hours,arguments.minutes,arguments.seconds)>
<cfreturn gregorianDate> <!--- returns datetime in server TZ --->
</cffunction>

Hi Paul,

Your i18ncalendars is really a great help. There is another thing also I want to clarify about the i18ncalendars and the persiancalendar class. Correct me if I am wrong, but the date base(I mean the basis for date conversion) is the gregorian date right? Which means, whatever date I input, the cf app(or maybe this is done from the classes) will consider date inputs as gregorian and then convert it to the desired calendar format? What if I am entering a date input that is already a persian date, say I enter 1387-04-14(yyyy-mm-dd), is there any way that we can tell the classes(or maybe the i18ncalendars) that the input date is already a persian date(which means tell the app that the basis for date conversion is Persian) ? The thing is, when I enter 1387-04-14(a persian date), the app accepts it as a gregorian date and do some conversions. But I want to let the app know that the input date is already a Persian date. Any insights, ideas or suggestions on this? Thanks.


-Fran

Hi Paul,

everything works fine now. My bad. I was using the old files (which makes me wonder if the old files were correct? or maybe i have messed up those files). Anyway, I tried the latest files which i downloaded from the links you gave and everything is ok. Thank you so much.

dongzky wrote:
> http://www.sustainablegis.com/projects/icu4j/calendarsTB.cfm and it gave me the
> output i was expecting. Persian year now is 1387. However, when I tried to
> download all the files for this testbed and ran it from my local PC, the year
> now in Persian is giving me 1386 instead of 1387? Anything more I have to

what date did you pass in? there's no one-to-one year correspondence between the
gregorian & persian calendars:

AP 1386 covers 2007-2008 AD
AP 1387 covers 2008-2009 AD

dongzky wrote:
> @Paul: thanks. i'll be looking into this. So, to clear things, icu4j only
> supports farsi for displaying and not automatic date calculations according
> to the farsi locale, right?

you need a calendar to do date math, etc. icu4j doesn't have the jalali calendar
built in (if i recall correctly some kind of academic politics or the regular
old kind of politics prevented any kind of official persian calendar from being
included in icu4j but it does have a lot of others like coptic, arabic, chinese,
etc).

hi Paul,

I tried your testbed http://www.sustainablegis.com/projects/icu4j/calendarsTB.cfm and it gave me the output i was expecting. Persian year now is 1387. However, when I tried to download all the files for this testbed and ran it from my local PC, the year now in Persian is giving me 1386 instead of 1387? Anything more I have to configure?

These are the things I did:
1. I copy the persianCalendar.cfc and the rest of the cfc's to my cfc path.
2. I copy the files(icu4j_3_2_calendar.jar, icu4j-4_0_d02-src.jar, icu4j-4_0_d02.jar, icu4j-charsets-4_0_d02.jar, icu4j-localespi-4_0_d02.jar and persiancalendar.jar) to \CF8root\WEB-INF\lib\addedClass where addedClass directory is my created dir which is already mapped or added in the java/jvm path in cf admin.
3. I copy the calendarsTB.cfm to my cf apps directory.
4. I restarted CF8 server.
5. I tested calendarsTB.cfm and got year 1386 in persian instead of 1387

@Paul: thanks. i'll be looking into this. So, to clear things, icu4j only supports farsi for displaying and not automatic date calculations according to the farsi locale, right?