![]() It is not efficient to always use these objects just because they process in parallel. You should not attempt to change the code yourself without discussing with me. The following objects are custom built by me to achieve the outcomes mentioned in the above section. In this page I will discuss a new solution that uses objects to allow developers to implement RUNNABLE or CALLABLE interfaces which can then be executed by custom parallel processing objects. In all of the above the amount of code required to simply implement the solution is irritating and not exactly enjoyable to work with. This is a pretty inconvenient thing because we dont want to manually code these wait terms any time we want this functionality and we gain little from this if execution of our current method or program ends since good OO coding practices mean that our calling method is usually simple and does not have a lengthy runtime, we would rather store a result and retrieve it later or have the callback always occur no matter what. If the calling method or program ends then NO callback will occur so this means you must manually WAIT UNTIL either time or a variable that is set inside the return method is flagged. You cannot call the method if the current calling method that calls the function ends. When calling STARTING NEW TASK there is no way to know that your task has completed other than the CALLING method | PERFORMING subroutine keywords at the end but they have their drawbacks again. The standard documentation explains this in detail but the summary is that there must be at least 2 work processes available. Submit a report to run as a background job via the JOB_OPEN and JOB_CLOSE statements – Background Work ProcessingĬalling the function modules with STARTING NEW TASK does not handle errors and you must custom build the error handling… A common error occurs when there are insufficient resources to start a new task.Call a remote enabled function module using the IN BACKGROUND TASK keyword – Dialog Work Processing.Call a remote enabled function module using the STARTING NEW TASK keyword – Dialog Work Processing.The following are the standard ways of doing this: Asynchronously iterating through loops of slow processes is a serious pain and even more so when you care about the results or the completion of those processes such as a fork / join style process. This particular topic has been one of constant irritation for me especially when coming from other languages where parallel processing is common place. ![]() Parallel processing is generally achieved through a series of different methods in standard SAP, however, each tend to have various drawbacks which often make it annoying to work with and usually not worth the effort for every day uses. Note: This page uses syntax provided by the ABAP 7.4 release, for info on that check out the excellent Blog written by Horst Keller here on SCN.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |