VPLUS version B.06.07 contains enhancements to handle Year
2000 and beyond in applications. These enhancements can be grouped
into three segments as follows:
Two new intrinsics have been added to VPLUS to handle dates
in the next century. These are VGETYYYYMMDD
and VPUTYYYYMMDD.
These intrinsics are similar in structure and function to the existing
intrinsics VGETYYMMDD
and VPUTYYMMDD
respectively. The difference is that the date values handled by
the new intrinsics contain 4-digit year components.
FORMSPEC Application Ready Buffer (ARB) processing has been
enhanced with the addition of a new ARB data type. This data type
can be specified on the DTC Menu for Data Type Conversions from
Screen Type to Application Type. The new ARB Type is YYYYMD
and is defined as a 8-byte ASCII field containing a date value in
YMD order with
no separators. Also the year component in the date value has 4 digits.
Note that FORMSPEC will ensure a length of 8 for the data type YYYYMD
in the ARB. In essence, the value is of the form YYYYMMDD
(8 bytes) even though the Type designator on the DTC Menu has been
abbreviated to YYYYMD.
Date processing in VPLUS has been enhanced to handle date
values with 4-digit year components. Specifically, the following
additions have been made.
Date output will be formatted with 4-digit years if the target
field is wide enough to receive the date, and the user requests
this action. Examples of such output include the SET
statement in FORMSPEC. The target field should be at least 10 characters
in length to have a 4-digit year output.
VPLUS, by default, will format date output with 2-digit years.
To change the behavior as described above, define a JCW called VSETNEXTCENTURY
and set bit 15 to 1 (bits are numbered from 0 through 15). It should
be noted that this option will be active for fields wide enough
to hold the 4-digit year date. For other fields, 2-digit years will
be used.
Existing 2-digit years can be interpreted differently to handle
dates in the next century. Currently VPLUS handles year components
00-99 as 1900-1999. This scheme of interpretation can be changed.
In the new scheme, 00-49 is interpreted as 2000-2049 and 50-99 is
interpreted as 1950-1999. This interpretation will be valid through
all processing done by VPLUS. For example, this scheme will allow
the user to enter 02/29/00 (MDY order) in an existing application
and have it processed correctly.
To invoke this method of date interpretation, define a JCW
called VSETNEXTCENTURY
and set bit 14 to 1. This method is used for processing only 2-digit
year dates and not 4-digit year dates. The display of 2-digit year
dates is not affected by this enhancement. This means that 12/11/10
(MDY order) can refer to 1910 in one application and 2010 in another
application.
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 | NOTE: When defining the JCW VSETNEXTCENTURY,
set all unused bits to 0. |
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