src/datetime.asn

   1 UserInfoFormat-dateTime
   2 {Z39-50-userInfoFormat dateTime (6)} DEFINITIONS ::=
   3 BEGIN
   4 IMPORTS IntUnit FROM Z39-50-APDU-1995;
   5
   6 DateTime ::= SEQUENCE{
   7      date [1]  Z3950Date OPTIONAL,
   8      time [2]  Z3950Time OPTIONAL
   9                     -- one or the other, or both
  10           }
  11
  12 Z3950Date ::= SEQUENCE{
  13  year         [1] IMPLICIT INTEGER,
  14                     -- For "positive" years, i.e. 1 AD or later, supply
  15                     -- the absolute year, e.g. If the year is 1995, supply
  16                     -- the integer 1995; the value 95 would indicate the
  17                     -- year 0095.
  18                     -- For "negative" years, e.g. 1 BC or earlier, -1
  19                     -- represents 1 BC, -2 represents 2 BC, etc. Zero is
  20                     -- invalid, because there was no year zero.
  21  partOfYear   [2] CHOICE{ -- may be omitted if only year is significant
  22         monthAndDay [1]   IMPLICIT SEQUENCE{
  23                        month [2]  IMPLICIT INTEGER,
  24                                    -- value 1-12
  25                        day   [3]  IMPLICIT INTEGER OPTIONAL
  26                                    -- may be omitted if only year and month
  27                                    -- are significant. Value 1-31.
  28                                            },
  29         julianDay   [2]   IMPLICIT INTEGER, -- Value 1 - 366.
  30         weekNumber  [3]   IMPLICIT INTEGER, -- Value 1 - 53.
  31         quarter     [4] CHOICE{
  32                        first    [1] IMPLICIT NULL,
  33                        second   [2] IMPLICIT NULL,
  34                        third    [3] IMPLICIT NULL,
  35                        fourth   [4] IMPLICIT NULL},
  36         season      [5] CHOICE{
  37                        winter   [1] IMPLICIT NULL,
  38                        spring   [2] IMPLICIT NULL,
  39                        summer   [3] IMPLICIT NULL,
  40                        autumn   [4] IMPLICIT NULL}
  41                                               } OPTIONAL,
  42  flags        [3] IMPLICIT SEQUENCE{
  43      circa          [1]   IMPLICIT NULL OPTIONAL,
  44                           -- if this flag is set then the date is "approximate".
  45      era            [2]   CHOICE{
  46                           -- If era occurs, partOfYear should not occur.
  47                           decade         [1] IMPLICIT NULL,
  48                                               -- year must be multiple of 10.
  49                                               -- For example, 1900 refers to
  50                                               -- the decade covering the years
  51                                               -- 1900 through 1909.
  52                           century        [2] IMPLICIT NULL,
  53                                               -- year must be multiple of 100.
  54                           millennium     [3] IMPLICIT NULL
  55                                               -- year must be multiple of 1000.
  56                                                     } OPTIONAL
  57                                               } OPTIONAL
  58                                 }
  59
  60
  61 Z3950Time ::= SEQUENCE{
  62      hour           [1] IMPLICIT INTEGER,
  63                              -- Value 0-23.
  64      minute         [2]  IMPLICIT INTEGER OPTIONAL,
  65                              -- value 0-59. May be omitted when hour only is
  66                              -- significant (in which case second and
  67                              -- partOfSecond must also be omitted).
  68      second         [3]  IMPLICIT INTEGER OPTIONAL,
  69                              -- value 0-59. May be omitted when only hour, or
  70                              -- hour and minute, is significant (in which case
  71                              -- partOfSecond must also be omitted).
  72      partOfSecond   [4]  IMPLICIT IntUnit OPTIONAL,
  73                              -- Use Unit System = 'si', Unit type = 'time';
  74                              -- Unit = 'second', with appropriate value and
  75                              -- scale factor.
  76      zone           [5]  CHOICE{
  77                               local      [1]  IMPLICIT NULL,
  78                               utc        [2]  IMPLICIT NULL,
  79                               utcOffset  [3]  IMPLICIT INTEGER  -- in minutes
  80                                                     }}
  81 END