What are the ABAP keywords and syntax that cannot be used in the ABAP cloud environment?

SAP BTP ABAP  The environment is used for  ABAP  Developed  SAP  Platform as a service  (PaaS)  product , Enable developers to take advantage of their traditional native  ABAP  Professional knowledge , stay  SAP  Development and operation in the business technology platform  ABAP  Applications , Or as  SAP  Software extensions or as stand-alone applications .

Before we enter   Cloud  ABAP  Before discussing the technical details , I wonder if you have thought about a problem ： Why?  SAP  To put  ABAP  Programming environment introduction  SAP Cloud Platform?

SAP  Installed customer base will deploy their existing on premises  SAP Business Suite  and  SAP NetWeaver  Products such as , Deploy migration to  SAP S/4HANA, Include  On-Premises  And cloud deployment . Customers will take advantage of this opportunity to fundamentally simplify the systems they have developed over the past few decades  landscape.  The existing business suite system will be integrated into a single  S/4HANA  In the example . Customers want to reduce the complexity of their core business processes to an intelligent digital core (Intelligent Digital Core), So as to form the pillar of intelligent enterprise .

In the traditional business suite system , The customized content is undoubtedly a highly complex module . After years of use by the enterprise , Custom code is piling up . Yes  SAP  standard  ABAP  Direct modification of code , Will shift customers to higher-level versions or enhanced package implementation , Bring great obstacles . under these circumstances , When a customer tries to implement a new enhancement package into the system , A lot of time and effort have to be invested to ensure that the custom code still works after the implementation of the enhancement package .

If the customer's  ABAP  Solution , Deployed in the cloud , So where do these customized codes go ？

By way of  ABAP  Development and execution moved to  SAP Cloud Platform, Customers and partners can put all the infrastructure 、 Life cycle management and system operation tasks are entrusted to  SAP  Of  DevOps  The team .  Customers and partners can immediately benefit from and adopt  SAP HANA  Supporting  ABAP  The latest innovation in the stack , So you can use innovation faster in the cloud , Because new innovations are delivered every quarter .

therefore , Distinguish between traditional  ABAP  grammar , In the cloud  ABAP  Still available in the programming environment , become  ABAP  One of the things developers must know .

SAP Cloud Platform ABAP Programming environment ABAP grammar , Just vast SAP The consultants are On-Premises Used in the environment ABAP A subset of . let me put it another way ,On-Premises It can work normally in the environment ABAP Code , Simply copy and paste to the cloud environment , You may not be able to compile .

Look at some examples ：

MOVE

Fixing this syntax error is simple , Directly operate with assignment “=” Replace MOVE that will do . In other words, this kind of error should only occur in old historical code (Legacy Code),  Everyone should not be able to write code now MOVE A simple assignment operation is performed .

No,  Released for Cloud  Of  Data Elements

Every  ABAP Development Tool Created in ABAP Cloud There is one in every project Released Objects Folder , There's one in it ABAP List of objects that developers can use in the cloud environment , stay Data Elements The subfolder contains all available data elements . At the top of the list are those that describe Boolean types ABAP_BOOLEAN.

It is also because of historical reasons , You know it's in On-Premises Environment to define a boolean variable , There are many types of definitions available ：boole_d, abap_bool, boolean wait .

But on the cloud , Let's honestly use the types maintained in the white list .

Not all SYST Structure fields can be accessed directly

Structure SYST It contains many system fields , Can let ABAP Developers can easily get a ABAP Information of various dimensions during application execution .

stay ABAP In the cloud environment , Using these fields requires special care , So as not to encounter something like Access to the field "SY-DATUM" is not permitted in the restricted language scope This grammatical error ：

The right way , Should use the CL_ABAP_CONTEXT_INFO=>GET_SYSTEM_DATE The methods provided by this tool class .

Here are some other examples .

Fortunately, , Because we are ABAP Development Tool This IDE Internal programming , So you don't have to memorize these On-Premises To ABAP Cloud Syntax conversion rules on . Most of the time , rely on IDE Grammar error or Quick Fix It is not difficult to find clues to fix grammatical errors .

Of course, if you don't think this method of repairing one by one is slow , Or imagine such a scenario ： Your ABAP On-Premises There is a development kit on the system , It contains a lot of ABAP Secondary development code , After converting this code from On-Premises Before the system is migrated to the cloud , We may expect to do a unified “Cloud Readiness” Check , List all the hidden dangers in the cloud at one time .

Conventional ATC Check (ABAP Test Cockpit,  A kind of ABAP Code checker ) At this time, it has a place to play again . According to this article SAP Community blog

How to check your custom ABAP code for SAP Cloud Platform ABAP Environment

Mentioned note To do , In a ATC The installation on the central inspection system contains new ATC Check the implementation of the option note：

This new ATC The check option name is SAP_CP_READINESS_REMOTE, Can help us as early as ABAP Before the code is migrated to the cloud , stay On-Premises The environment will be able to find all that prevent the current check ABAP Obstacles to cloud code .

Of course, this check can be performed in the opposite direction , That is to say SAP Cloud Platform ABAP In the environment , Trigger connected ABAP On-Premises In the environment ATC Check . Because it is a cloud environment On-Premises Environmental Science , So we need to SAP Cloud Connector Complete the internal and external network crossing ：

from Fiori Launchpad I'm going into Custom Code Migration The application of , Create a new migration project ：

The migration target is of course SAP Cloud Platform ABAP Environmental Science , The source of migration is ABAP On-Premises Environmental Science , So you need to maintain a pointing to the latter Destination, This Destination stay SAP On the cloud platform .

At this point we can be in Fiori UI Trigger on ABAP On-Premises On the system ATC Check , And monitor its progress .

After inspection , You can return to... According to the prompt On-Premises Environment for code adjustment .

summary

First of all, this article is about  SAP  Cloud platform  ABAP  The programming environment is briefly introduced , Elaborated  SAP  Cloud platform introduction  ABAP  The motivation of the programming environment and the benefits customers can get from it . Then from  ABAP  In the field of secondary development , all  ABAP  Developers are concerned about  ABAP  Grammar compatibility , Typical examples of  ABAP  Continue to work in the cloud programming environment  ABAP  keyword , And the alternatives are given .