HP 3000 Manuals

HP ALLBASE/4GL Developer Reference Manual Vol. 1

Validation Ranges Screen 

This screen allows you to define a range of values for use in validating
input data or selecting records for reporting.

Screen Image 

	       Click here to view figure.
            

Field Descriptions 

Range Name   Enter the name of the validation range (up to 16
characters).

Secured   If you wish to protect this validation range from unauthorized
modification, enter Y after you have completed the required fields on
this screen.  The entry in this field defaults to N.

If you enter Y, this validation range can only be modified by a developer
who has signed on to the application under the correct development
security code.

Edit Code   Enter a code defining the type of data in the range.  The
edit code defines the method by which HP ALLBASE/4GL checks the range.
Refer to Additional Information.

The following table lists the available edit codes and their meanings.

  Code   Meaning 

   X     Any printable character.

   A     Alphabetic characters only (A to z, extended characters, or
         space).

   U     Forced uppercase.  Same as X edit code, but shifts all lowercase
         alphabetic characters to uppercase.

   K     Alphanumeric characters only (A to z, 0 to 9, extended
         characters, and underscore).

   N     Unsigned number (0 to 9, a period ".", or a comma ",").

   S     Signed number.  Same as N edit code, but may include + or -.

   Q     Question.  Y, y, N, or n only.  Any characters beyond the first
         character in the field are ignored.

   D     Date field.  Must be eight characters long.  The date may be
         either MM/DD/YY or DD/MM/YY (depending on the system-wide date
         format) where MM, DD, and YY represent the month, day, and year
         respectively.

   T     Date field, defaulting to the current date.

Value - From   Enter the starting value of the range.

Value - To   Enter the last value of the range.

Number of Decimal Places   Enter the number of decimal places allowed in
the number if the range is numeric (edit code N or S).

Message Name   Enter the name of a message to be displayed if data input
from the screen falls outside the specified range of values.  The message
type (refer to Messages Screen) determines how the system reacts if the
user enters incorrect data.

If you don't enter a message name in this field, the screen processing
logic displays a system defined ERROR type message if the user enters
incorrect data.  Refer to chapter 6 for details of the screen processing
logic.

Function Keys 

f1       Field Specs.    Cancels the current screen and displays the
        fields specification screen.

f3       Tables  Cancels the current screen and displays the validation
        tables screen.

f4       Messages  Cancels the current screen and displays the messages
        screen.

Additional Information 

The edit code for the range determines the method of checking whether a
value falls within the range.

If the validation range is numeric (that is, the edit code is either N or
S), HP ALLBASE/4GL performs the range check by following strict numeric
precedence.

If the validation range is not numeric, HP ALLBASE/4GL performs the range
check on a character by character basis following the standard HP
ALLBASE/4GL collating sequence.

The order of precedence allocated to characters within a non-numeric
range is as follows:

Blanks

Numeric digits            0 to 9

Alphabetic characters     A to z

Other characters          (punctuation characters)

The HP ALLBASE/4GL collating sequence is listed in appendix A.

MPE/iX 5.0 Documentation