# Enqueue or dequeue a bit, with latter having probability of 10%. Return (itm, lst) # Then return item and new list. Lst = lst # Change list to remove first item. An enqueue function module sets an SAP lock. Every ABAP system contains exactly one such table (administered by transaction SM12). The function locks access a central lock table in the memory of a special application server work process. Return lst # And return list (for consistency with dequeue). Setting SAP Locks Lock function modules set or release SAP locks when called. Lst.append(itm) # Just add item to end of list. commit work and enqueue and dequeue 1910 Views Follow RSS Feed Hi all, Please help. Were it more serious code, it would be implemented as a class but it should be enough to illustrate the workings: import random That diagram shows a queue where you've enqueued the numbers 1, 2 and 3 in that order, without yet dequeuing any.īy way of example, here's some Python code that shows a simplistic queue in action, with enqueue and dequeue functions. In order to use a number range for auto increment column numbers safely in SAP, NUMBERGETNEXT ABAP function is used with NUMBERRANGEENQUEUE and NUMBERRANGEDEQUEUE. There are variations of queues such as double-ended ones where you can enqueue and dequeue at either end but the vast majority would be the simpler form: +-+-+-+ You enqueue items at one end and dequeue at the other, just like a line of people queuing up for tickets to the latest Taylor Swift concert (I was originally going to say Billy Joel but that would date me severely). Enqueue and Dequeue tend to be operations on a queue, a data structure that does exactly what it sounds like it does. The main purpose or goals of a lock mechanism in SAP ABAP are as follows ABAP Lock mechanism is as follows 1.
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