Browse Prior Art Database

Method to Back Out a Sequence of List Search Operations

IP.com Disclosure Number: IPCOM000038979D
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Repass, JT: AUTHOR [+2]

Abstract

A method is described to permit the operator of an engineering workstation, such as the IBM RT/PC, after several qualified search operations, to go back to the previous list or to the original list to begin another qualified search without recreating or saving those lists. (Image Omitted) In accordance with the new method, the List Services back-out function enables the application programs to back out a sequence of list search operations. An application program interface is provided that allows the back-out to occur in two different modes. In mode one, all of the search operations performed on the list will be backed out and the list will be restored to its original state with one call to a program module lssback. With mode two, the list will be restored to its previous state with each call to this function. Fig.

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Method to Back Out a Sequence of List Search Operations

A method is described to permit the operator of an engineering workstation, such as the IBM RT/PC, after several qualified search operations, to go back to the previous list or to the original list to begin another qualified search without recreating or saving those lists.

(Image Omitted)

In accordance with the new method, the List Services back-out function enables the application programs to back out a sequence of list search operations. An application program interface is provided that allows the back-out to occur in two different modes. In mode one, all of the search operations performed on the list will be backed out and the list will be restored to its original state with one call to a program module lssback. With mode two, the list will be restored to its previous state with each call to this function. Fig. 2 is a flow chart illustrating the various steps in these two modes. The data structure List Services and Dialog Manager use, as shown in these charts, consists of a structured array of printers to the records in a list. The second field in this array will be a control code field to control display or non-display of the record. When Dialog Manager is called for display of the list, only records with control code of 0 will be displayed. Fig. 1 illustrates a flow chart of the steps in the use of List Services from File applications. The Files application of the usability LPP initially sets the displa...