I am using the following function to create a relative DateTime comparison string such as: Today (12 Minutes Ago), or Yesterday (21 Hours Ago), or 3/3/2015 (3 Days Ago).
The function is failing if I have a DateTime comparison between 1 and 2 days, so for example:
If the current time is: 3/6/2015 8:30pm and the comparison time is 3/4/2015 9:00pm
I get: 3/4/2015 (1 Day Ago)
When I should be getting: 3/4/2015 (2 Days Ago).
But what is interesting is that if I have a time comparison of 3/4/2015 7:00pm, it will return 3/4/2015 (2 Days Ago).
What's going on?
Public Function GetRelativeTime(givenDate As DateTime) As String
If (givenDate.Date = DateTime.Today) Then
Return "Today " + ConvertTimeSpanToRelativeTime(DateTime.Now.Subtract(givenDate))
ElseIf (givenDate.Date = DateTime.Today.AddDays(-1)) Then
Return "Yesterday " + ConvertTimeSpanToRelativeTime(DateTime.Now.Subtract(givenDate))
Else
Return givenDate.ToString("d") + " " + ConvertTimeSpanToRelativeTime(DateTime.Now.Subtract(givenDate))
End If
End Function
Private Shared Function ConvertTimeSpanToRelativeTime(diffDate As TimeSpan) As String
Dim d As New StringBuilder()
If diffDate.Days > 0 Then
d.AppendFormat("({0} {1} ago)", diffDate.Days, If(diffDate.Days > 1, "Days", "Day"))
ElseIf diffDate.Hours > 0 Then
d.AppendFormat("({0} {1} ago)", diffDate.Hours, If(diffDate.Hours > 1, "Hours", "Hour"))
ElseIf diffDate.Minutes > 0 Then
d.AppendFormat("({0} {1} ago)", diffDate.Minutes, If(diffDate.Minutes > 1, "Minutes", "Minute"))
ElseIf diffDate.Seconds > 0 Then
d.AppendFormat("({0} {1} ago)", diffDate.Seconds, If(diffDate.Seconds > 1, "Seconds", "Seconds"))
ElseIf diffDate.Milliseconds > 0 Then
d.AppendFormat("(Just Now)", diffDate.Milliseconds)
End If
Return d.ToString()
End Function
I think Steve Wellens nailed it. Basically you're only showing the day portion of 1 day, 23 hours, and 30 minutes. If you really want it to show up as 2 days, then instead of your
DateTime.Now.Subtract(givenDate)
you could use something like
DateDiff(DateInterval.Day, DateTime.Now.Date, givenDate.Date)
I believe this should give you the difference in days as if those two dates were set to midnight, which would be 2 in your case above. Then you could use a DateDiff by hours if this wasn't greater than 0, depending on how you want to play it. I think DateDiff returns a long though so you'll have to adjust your function.
Related
hi I has date format and I want converted to correct GMT date :
<YYMMDDhhmmssNNN><C|D|G|H>
Sample value on that date:
210204215026000C
I get this explanation for part NNN :
NNN If flag is C or D then NNN is the number of hours relativeto GMT,
if flag is G or H, NNN is the number of quarter hours relative to GMT
C|D|G|H C and G = Ahead of GMT, D and H = Behind GMT
but I did not get how number of hours relative to GMT can present on 3 digits ? it should be in 2 digit as i knew the offset for hours related to GMT is from 0 to 23 , and also what quarter hours relative to GMT mean ?
I want to use Scala or Java.
I don’t know why they set 3 digits aside for the offset. I agree with you that 2 digits suffice for all cases. Maybe they just wanted to be very sure they would never run of out space, and maybe they even overdid this a bit. 3 digits is not a problem as long as the actual values are within the range that java.time.ZoneOffset can handle, +/-18 hours. In your example NNN is 000, so 0 hours from GMT, which certainly is OK and trivial to handle.
A quarter hour is a quarter of an hour. As Salman A mentioned in a comment, 22 quarter hours ahead of Greenwich means an offset of +05:30, currently used in Sri Lanka and India. If the producer of the string wants to use this option, they can give numbers up to 72 (still comfortably within 2 digits). 18 * 4 = 72, so 18 hours equals 72 quarter hours. To imagine a situation where 2 digits would be too little, think an offset of 25 hours. I wouldn’t think it realistic, on the other hand no one can guarantee that it will never happen.
Java solution: how to parse and convert to GMT time
I am using these constants:
private static final Pattern DATE_PATTERN
= Pattern.compile("(\\d{12})(\\d{3})(\\w)");
private static final DateTimeFormatter FORMATTER
= DateTimeFormatter.ofPattern("uuMMddHHmmss");
private static final int SECONDS_IN_A_QUARTER_HOUR
= Math.toIntExact(Duration.ofHours(1).dividedBy(4).getSeconds());
Parse and convert like this:
String sampleValue = "210204215026000C";
Matcher matcher = DATE_PATTERN.matcher(sampleValue);
if (matcher.matches()) {
LocalDateTime ldt = LocalDateTime.parse(matcher.group(1), FORMATTER);
int offsetAmount = Integer.parseInt(matcher.group(2));
char flag = matcher.group(3).charAt(0);
// offset amount denotes either hours or quarter hours
boolean quarterHours = flag == 'G' || flag == 'H';
boolean negative = flag == 'D' || flag == 'H';
if (negative) {
offsetAmount = -offsetAmount;
}
ZoneOffset offset = quarterHours
? ZoneOffset.ofTotalSeconds(offsetAmount * SECONDS_IN_A_QUARTER_HOUR)
: ZoneOffset.ofHours(offsetAmount);
OffsetDateTime dateTime = ldt.atOffset(offset);
OffsetDateTime gmtDateTime = dateTime.withOffsetSameInstant(ZoneOffset.UTC);
System.out.println("GMT time: " + gmtDateTime);
}
else {
System.out.println("Invalid value: " + sampleValue);
}
Output is:
GMT time: 2021-02-04T21:50:26Z
I think my code covers all valid cases. You will probably want to validate that the flag is indeed C, D, G or H, and also handle the potential DateTimeException and NumberFormatException from the parsing and creating the ZoneOffset (NumberFormatException should not happen).
**DATE FROM:**
def format=new java.text.SimpleDateFormat("yyyyMMdd")
def cal=Calendar.getInstance()
cal.get(Calendar.YEAR);
cal.set(Calendar.MONTH, 0);
cal.set(Calendar.DAY_OF_MONTH, 31);
[format.format(cal.getTime())]
**DATE TO:**
def format=new java.text.SimpleDateFormat("yyyyMMdd")
def cal=Calendar.getInstance()
cal.add(Calendar.DAY_OF_MONTH,-cal.get(Calendar.DAY_OF_MONTH))
[format.format(cal.getTime())]
when year changes (2020 - 2021) - it confuses January of previous year with January of this year
I have to correct so that in January (December reporting) it extracts data for period 31.01 - 31.12. of previous year.
The job was wrong because it extracted data from 31.01.2021 to 31.12.2020
// retrieve details of the current date
def cal = Calendar.instance;
def currentYear = cal.get(Calendar.YEAR);
def currentMonth = cal.get(Calendar.MONTH);
// set the instance to the start of the previous month
if ( currentMonth == 0 ) {
cal.set(currentYear-1, 11, 1);
} else {
cal.set(currentYear, (currentMonth-1), 1);
}
// extract the date, and format to a string
Date previousMonthStart = cal.time;
String previousMonthStartFormatted = previousMonthStart.format('yyyy-MM-dd');
If all you are looking for is the start of the previous year as in your title then the following code:
import java.time.*
def startOfPreviousYear = LocalDate.now()
.withDayOfMonth(1)
.withMonth(1)
.minusYears(1)
println startOfPreviousYear
def againStartingFromJanuary = LocalDate.of(2021, 1, 15)
.withDayOfMonth(1)
.withMonth(1)
.minusYears(1)
println againStartingFromJanuary
demonstrates one way to accomplish this. When run, this prints (with now being today's date of 2021.Mar.10):
─➤ groovy solution.groovy
2020-01-01
2020-01-01
updated after comments
You can get the end of previous and current months with something like this:
import java.time.*
def endOfPreviousMonth = LocalDate.now()
.withDayOfMonth(1)
.minusDays(1)
def endOfCurrentMonth = LocalDate.now()
.withDayOfMonth(1)
.plusMonths(1)
.minusDays(1)
println "end of last month: ${endOfPreviousMonth}"
println "end of current month: ${endOfCurrentMonth}"
which with current date prints:
end of last month: 2021-02-28
end of current month: 2021-03-31
or if we are in january:
def endOfPreviousMonth = LocalDate.of(2021, 1, 15)
.withDayOfMonth(1)
.minusDays(1)
def endOfCurrentMonth = LocalDate.of(2021, 1, 15)
.withDayOfMonth(1)
.plusMonths(1)
.minusDays(1)
println "end of last month: ${endOfPreviousMonth}"
println "end of current month: ${endOfCurrentMonth}"
which prints:
─➤ groovy solution.groovy
end of last month: 2020-12-31
end of current month: 2021-01-31
In general you should try to, when possible, stay away from using manual date arithmetic when dealing with dates if your target is based on the current date (as in, previous month, next month, three months ago, etc). Use the api:s handed to you by java. The date classes take care of rolling years, rolling months, rolling days, leap years, etc, all that stuff that you really do not want to spend time solving yourself.
I have a timestamp (submitTime) which I need to check whether it is less than 1 hour old or not. Timestamps are in microseconds and including date.
currentTime = 1527530605357000000 (Monday, May 28, 2018 6:03:25.357 PM)
submitTime = 1527529918658907821 (Monday, May 28, 2018 5:51:58.659 PM)
long currentTime = (long) (new Date().getTime()*1000000)
submitTime = job.SubmitTime // part of the code
oneHhour = 3600000000
if (currentTime - submitTime > oneHhour) {
println job.Name + " env is up more than 1 hour";
But it doesn't work since the result is 686698092179 and it it not represent time.
Help?
Assuming SubmitTime is a timestamp in microseconds, you can compare it the the current timestamp in microseconds like so:
// Get the current time (System.currentTimeMillis) in microseconds:
long currentMicroseconds = TimeUnit.MILLISECONDS.toMicros(System.currentTimeMillis())
// You could also simply do this:
long currentMicroseconds = System.currentTimeMillis() * 1000
// Subtract the timestamps and compare:
if (currentMicroseconds - job.SubmitTime > 3600000000) {
// More than an hour has elapsed
}
The timestamp is assumed to be the number of microseconds since January 1, 1970, 00:00:00 GMT (consistent with Date.getTime).
In groovy you can use TimeCategory which is much more intuitive:
def date = new Date(timestampInLong)
use (groovy.time.TimeCategory) {
println (date > new Date() - 1.hour)
}
I have two columns in an access 2010 database with some calculated field:
time_from time_until calculated_field(time_until-time_from)
10:45 15:00 4:15
13:15 16:00 2:45
11:10 16:00 4:50
08:00 15:00 7:00
08:00 23:00 15:00
Now so far, it is good: calculated field did its job to tell me total hours and mins...
now, I need a sum of a calculated field....
I put in an expression builder: =Sum([time_until]-[time_from])
I guess total sum should give me 33:50... but it gives me some 9:50. why is this happening? Is there a way to fix this?
update:
when I put like this:
=Format(Sum([vrijeme_do]-[vrijeme_od])*24)
I get a decimal point number... which I suppose is correct....
for example, 25hrs and 30mins is shown as 25,5
but, how do I format this 25,5 to look like 25:30?
As #Arvo mentioned in his comment, this is a formatting problem. Your expected result for the sum of calculated_field is 33:50. However that sum is a Date/Time value, and since the number of hours is greater than 24, the day portion of the Date/Time is advanced by 1 and the remainder 9:50 is displayed as the time. Apparently your total is formatted to display only the time portion; the day portion is not displayed.
But the actual Date/Time value for the sum of calculated_field is #12/31/1899 09:50#. You can use a custom function to display that value in your desired format:
? duration_hhnn(#12/31/1899 09:50#)
33:50
This is the function:
Public Function duration_hhnn(ByVal pInput As Date) As String
Dim lngDays As Long
Dim lngMinutes As Long
Dim lngHours As Long
Dim strReturn As String
lngDays = Int(pInput)
lngHours = Hour(pInput)
lngMinutes = Minute(pInput)
lngHours = lngHours + (lngDays * 24)
strReturn = lngHours & ":" & Format(lngMinutes, "00")
duration_hhnn = strReturn
End Function
Note the function returns a string value so you can't do further date arithmetic on it directly.
Similar to the answer from #HansUp, it can be done without VBA code like so
Format(24 * Int(SUM(elapsed_time)) + Hour(SUM(elapsed_time)), "0") & ":" & Format(SUM(elapsed_time), "Nn")
I guess you are trying to show the total in a text box? the correct expression would be =SUM([calculated_field_name]).
I'm trying to get the difference between 2 dates in days, hours, and seconds:
import groovy.time.*
Date now = new Date()
// Using deprecated constructor just for this example
Date newYearsDay2000 = new Date(2000, 0, 1)
use (TimeCategory) {
now - newYearsDay2000
}
This prints:
-690023 days, -14 hours, -38 minutes, -27.182 seconds
Which is obviously nothing like the difference between today's date and 2000/1/1, where am I going wrong?
Thanks,
Don
Could be an issue with the deprecated constructor?
If you use Calendar (and the Groovy updated method) to create the newYearsDay2000 var, you get:
import groovy.time.*
import static java.util.Calendar.*
Date now = new Date()
// Use the static imported Calendar class
Date newYearsDay2000 = instance.updated( year:2000, month:JANUARY, day:1 ).time
use( TimeCategory ) {
now - newYearsDay2000
}
which gives the result:
3925 days, 23 hours, 59 minutes, 59.999 seconds
Edit
Yeah, the JavaDoc for Date shows that constructor with the comment:
Date(int year, int month, int date)
Deprecated. As of JDK version 1.1, replaced by Calendar.set(year + 1900, month, date) or GregorianCalendar(year + 1900, month, date).
Which leads me to believe that:
Date newYearsDay2000 = new Date(2000, 0, 1)
Is actualy creating the Date for new Years Day in the year 3900
Date
Parameters:
year - the year minus 1900.