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When I am doing a test of comparison between Stateful and Stateless BSP application ( mentioned in blog Stateless and Stateful – Different behavior in application side ), I meet with a strange is

When I am doing a test of comparison between Stateful and Stateless BSP application ( mentioned in blog Stateless and Stateful – Different behavior in application side ), I meet with a strange is

Let’s first refresh our memory on SAPUI5 controller. I have a simple xml view which only contains a button:<core:View xmlns:core="sap.ui.core" xmlns:common="sap.ui.commons&

Recently when I do self study on Vue I find many articles in the internet with full of praise on Vue‘s reactive Two-Way Data binding trait. This fact makes me recall my self-study on UI5 early in

Recently I am planning an internal training regarding Software engineering concept to my colleagues and one topic is “Interface Segregation”.The following guideline is quoted from OODesign:“When we de

There is an interface IF_CRM_PRODUCT_PROXY in CRM which declares almost all function modules from function group COM_PRODUCT_API for product master access.This interface is implemented by three classe

Suppose you have a large number of unit test cases and you don’t want them to be executed all at the same time during Maven build. You can simply achieve it via annotation @Category.(1) Create empty c

Suppose you need to repeatedly execute some test method in your unit test case, for example, you would like to test getPrice based on the first set of test data 5 times in test method test1() while fo

Suppose you need to repeatedly execute some test method in your unit test case, for example, you would like to test getPrice based on the first set of test data 5 times in test method test1() while fo

In order to avoid unnecessary query on database it is a common pattern to define a cache in application layer to cache the query result from database. See one example below. Here the application cache

Before we start to research tail recursion, let’s first have a look at the normal recursion.A simple factorial implementation by recursion:function factorial(n){   if(n ===1)&nbsp

I have Q7Q/504 as ERP system and QDD/504 as CRM system.A new material named JERRY2 is newly created in ERP and successfully downloaded to CRM via request download.However, after that I made changes on

Suppose I need to add the maintenance view COMV_PARTNER_FCT to my favorite list. I expect once the entry in the favorite list is double clicked, it will automatically navigate to the view detail like

Suppose I have a bean named HelloWorld which has a member attribute points to another bean User.With annotation @Autowired, as long as getBean is called in the runtime, the returned HelloWorld instanc

Recently I will deliver a session regarding dependency inversion principle to my team.As Java Spring is already widely used in all other Java development teams in my site, some ABAPers are n

Recently I am planning an internal training regarding Software engineering concept to my colleagues and one topic is “Interface Segregation”.The following guideline is quoted from OODesign:“When we de

如果系统里没有SQF这个tcode，可以参考note 1814328: SQF: Plug-In for Source Code Scans进行安装。ABAP static analysis tool SQF is a static code analysis tool developed in package SUPPORT_QUERY_FRAMEWORK in software compone

Jerry前一篇文章 SAP ABAP一组关键字 IS BOUND, IS NOT INITIAL和IS ASSIGNED的用法辨析 介绍了在ABAP里判断引用变量是否包含了一个有效引用的关键字：IS BOUND.本文则从ABAP和Java编程语言里不同的引用类型这个角度来继续引用这个话题的讨论。不知道大家留意过这个ABAP抽象类CL_ABAP_REFERENCE吗？这个抽象类

Display all possible implicit enhancement options. It is only possible to create implicit enhancement within these options. The available options are normally located in the beginning and ending part

We can define bean configuration in xml and then can get instantiated bean instance with help of all kinds of containers for example ClassPathXmlApplicationContext as displayed below:The content of Be