南京大学：《面向对象技术 OOT》课程教学资源（PPT课件讲稿）面向方面的编程 Aspect Oriented Programming

Aspect Oriented Programming 面向方面的编程 Institute of Computer Software 2021/1/27 Nanjing University

面向方面的编程 Aspect Oriented Programming 2021/1/27 Institute of Computer Software Nanjing University 1

最病 过摘要 2 n Background and Motivation 口AOP 口 AspectJ 口 ummary Institute of Computer Software 2021/1/27 Nanjing University

摘要  Background and Motivation  AOP  AspectJ  Summary 2021/1/27 Institute of Computer Software Nanjing University 2

最病 过摘要 n Background and Motivation 口AOP 口 AspectJ 口 ummary Institute of Computer Software 2021/1/27 Nanjing University

摘要  Background and Motivation  AOP  AspectJ  Summary 2021/1/27 Institute of Computer Software Nanjing University 3

最病 A Background and Motivation a Where oop has brought Us a Reusability of components a Modulari a Less complex implementation a Reduced cost of maintenance a Modularity is a universal advancement over structured programming that leads to clearer and better understood software Institute of Computer Software 2021/1/27 Nanjing University

Background and Motivation  Where OOP has brought us  Reusability of components  Modularity  Less complex implementation  Reduced cost of maintenance  ……  Modularity is a universal advancement over structured programming that leads to clearer and better understood software 2021/1/27 Institute of Computer Software Nanjing University 4

最病 E Modularity in Reality 5 a Code from org. apache tomcat Red shows relevant lines of code XML Parsing Good Modularity Nicely fits in one box Institute of CUmputer oo 2021/1/27 Nanjing University

Modularity in Reality  Code from org.apache.tomcat 2021/1/27 Institute of Computer Software Nanjing University 5 XML Parsing Red shows relevant lines of code Nicely fits in one box Good Modularity

最病 E Modularity in Reality 6 fits in two boxes URL pattern matching Pretty Good Modularity Institute of Computer Software 2021/1/27 Nanjing University

Modularity in Reality 2021/1/27 Institute of Computer Software Nanjing University 6 URL pattern matching Pretty Good Modularity fits in two boxes

最病 E Modularity in Reality 7 Code tangling and Red shows lines of code that scattering handle logging Logging 門叫 Bad Modularity Not in just one place Not even in a small number of places Institute of Computer Software 2021/1/27 Nanjing University

Modularity in Reality 2021/1/27 Institute of Computer Software Nanjing University 7 Logging Red shows lines of code that handle logging Not in just one place Not even in a small number of places Bad Modularity Code tangling and scattering

最病 E History of Programming Paradigms o In the beginning: Programming in whichever way. 口 Monolithic programs Institute ol CUIlpuel oUItwale 2021/1/27 Nanjing University

History of Programming Paradigms  In the beginning: Programming in whichever way.  Monolithic programs 2021/1/27 Institute of Computer Software Nanjing University 8

最病 E History of Programming Paradigms 9 n Structured Programming a Functional decomposition Modularity Institute of Computer Software 2021/1/27 Nanjing University

History of Programming Paradigms  Structured Programming  Functional decomposition 2021/1/27 Institute of Computer Software Nanjing University 9 Modularity

最病 E History of Programming Paradigms n Object-Oriented Programming a Encapsulation Inheritance Modularity Institute of Computer Software 2021/1/27 Nanjing University

History of Programming Paradigms  Object-Oriented Programming  Encapsulation & Inheritance 2021/1/27 Institute of Computer Software Nanjing University 10 Modularity