Browse Prior Art Database

Advanced method to display and modify hex information using a 3270 display.

IP.com Disclosure Number: IPCOM000031038D
Original Publication Date: 2004-Sep-07
Included in the Prior Art Database: 2004-Sep-07
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Abstract

A program is disclosed that allows the user to display and modify hex information on an IBM 3270 display screen. The hex information is displayed in a dump format. The user is allowed to modify the hex information by typing hex characters. Errors are identified by color and by cursor placement.

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Advanced method to display and modify hex information using a 3270 display.

A typical implementation is an user interface for a database administrator (DBA). The DBA manages database partitions by setting the high key value for each partition. The high key value is the highest key for records that reside in that partition. The high key value frequently consists of hexadecimal values. The length of the high key value is determined by the DBA.

In the user interface for the DBA, the partition high key is displayed in a dump format where the high key is displayed as both hex values and as character values as seen in figure 1. The data is separated at word boundaries. The hex area is formatted as input fields and can be typed over to replace the values. The screen may also contain an offset from the origin.

When the DBA types over the high key value, the new values appear as yellow characters to indicate which ones have been changed. The DBA presses the Enter key to commit the changes.

Only valid hex characters, 0-9, a-f and A-F, are allowed. A message is displayed if other characters are used. The invalid characters remain yellow and the cursor is placed on the first invalid character.

The data entered by the user is scanned from the bottom up. When an error is detected, its color attribute in the shadow variable is changed to yellow. The cursor stays on the last error found (the topmost error).

When correct values are typed and function key F5 is pressed, the charac...