Class: UtcTimestamp

• Inheritance
• Description
• Related information
• Instance protocol
  • accessing
  • converting
  • initialization
  • private
  • testing
  • visiting

Inheritance:

   Object
   |
   +--Magnitude
      |
      +--AbstractTime
         |
         +--Timestamp
            |
            +--UtcTimestamp

Package:

stx:libbasic

Category:

Magnitude-Time

Version:

rev: 1.17 date: 2018/05/24 15:49:57

user: cg

file: UtcTimestamp.st directory: libbasic

module: stx stc-classLibrary: libbasic

Author:

Stefan Vogel (stefan@zwerg.nil.exept.de)

Description:

This is a Timestamp, that represents itself as UTC.
Internally it stores exactly the same value as Timestamp, 
so the following expression is always true:

    someTimestamp asUtcTimestamp = someTimestamp asLocalTimestamp

But when printing, accessing hour, minute, ... and converting to Date and Time,
it returns the values represented in the UTC zone instead of the local timezone.
Be aware that this may lead to interesting results; for example when converting a timestamp
to a date, you may get a different date from an UTCTimestamp and a local timestamp.


[instance variables:]

[class variables:]

Related information:

    Time
    Date

Instance protocol:

 timeInfo

 timeZoneName

 utcOffset

I am an UTC timestamp, so there is no offset

 utcOffsetWithoutDst

 asLocalTimestamp

represent myself as a timestamp in the local timezone

 asUtcTimestamp

I am an UtcTimestamp

 setOSTimeFromYear: y month: m day: d hour: h minute: min second: s millisecond: millis

private: ask the operating system to compute the internal osTime (based on the epoch),
given y,m,d and h,m,s in utc time

 storeStringClass

 isLocalTimestamp

return true, if I am a local timestamp (i.e. with no TZ info)

 isUtcTimestamp

return true, if I am a utc timestamp

 acceptVisitor: aVisitor with: aParameter

dispatch for visitor pattern; send #visitUtcTimestamp:with: to aVisitor.