refactoring databases

Application ScenariosI believe you have encountered this scenario:There are already a bunch of if-else or switch-case in the old code, and the product requires adding a new function to the process.What do people do at this time?My advice is to: Refactor this piece of code. On the basis of refactoring, new functions are added. Someone will say: The duration of the original tense, and then re-construction of the old code, will not

Today, we do not introduce specific refactoring techniques. Let's take a moment to look back and summarize what kind of code needs to be refactored and what kind of code has an "unpleasant smell" to suggest that we need refactoring to suggest that this code actually has an improvement. I also like the author of the code that the characteristics of the use of "bad taste", very image is also very vivid. Below

Today's refactoring has no fixed form. I have used different versions over the years, and I bet different people will have different versions. This refactoring applies to scenarios where the switch statement block is large and new judgment conditions are introduced at any time. In this case, we recommend that you use the policy mode to encapsulate each condition into a separate class. There are many ways to

Folder "SSH Advanced path" Step by step refactoring container implementation Spring Framework-starting with a simple container (eight) "SSH Advanced path" Step by step refactoring container to implement spring framework--two schemes to solve the "intrusive" management of containers for components--active lookup and control inversion (ix) "SSH Advanced path" Step by step

Directory:"SSH advanced Route" Struts Fundamentals + Implementation Simple Login (ii)SSH Step-by-step refactoring MVC implementation struts framework-starting with a simple MVC (iii)"SSH Advanced path" Step by step refactoring MVC implementation Struts framework-package business logic and jump Path (iv)"SSH Advanced path" Step by step refactoring MVC to implement

Analytic microservices Architecture Series The article will describe the definition, characteristics, application scenarios, evolution of enterprise integration architecture and micro-service transformation thinking and technical decision-making considerations in several sections, and take IBM technology as an example to introduce how to realize the transformation of micro-service architecture. The previous article introduced the evolution of enterprise integration architecture into microservice

Top 6 refactoring patterns to help you score 80% in code Quality Posted by ajitesh Kumar/in code review, software quality/January 31,201 4 Have done several code reviews in past and found followingTop 5 code smellsCommon Cause SS most of these Code having code quality issues: Large Class: The classes were found larger enough due to lack of developers' understanding on one of the primary coding principles which is "single responsibility principle" (S

In the past few days, I have to sort out the code I wrote half a year ago. When I read the code, I found that there were a lot of places that were not well written, commonly known as "bad taste, refactoring, required. A few years ago, I read the book refactoring to improve the design of existing code. Although I have limited memory for various refactoring modes

This article is in the study summary, welcome reprint but please specify Source: http://blog.csdn.net/pistolove/article/details/42549977 in the previous article, "Remove the assignment of parameters" was described . This paper introduces the refactoring technique of "substituting function object for function". Let's learn this refactoring technique.straight to Discover: You have a large function in which t

In "Test-driven design, part 1th" and "test-driven design, part 2nd," I introduced how testing can achieve better design for new projects. In "Combining methods and SLAP," I discussed two key patterns-the combinatorial approach (composed method) and the single abstraction layer principle-to provide the overall goal for your code structure. These patterns need to be kept in mind. Once you have an existing software project, the main way to discover and utilize design elements is to refactor. In Ma

Python class inheritance and refactoring 0 objects An instance of a data structure defined by a class. The object consists of two data members (class variables and instance variables) and methods. #!/usr/bin/python# -*- coding: UTF-8 -*- class Employee: ‘所有员工的基类‘ empCount = 0 def __init__(self, name, salary): self.name = name self.salary = salary Employee.empCount += 1 def displayCount(self): print "Tot

1Study Plan1. Implement area Import functionN ocupload One-click Upload plugin to usen upload the file to the ActionN POI Introductionn using POI to parse an Excel fileN Complete Database operationn generate simple code and City code using pinyin4j2, regional paging queryN Page AdjustmentN Server-side implementation3. Refactoring the paging codeN baseactionN sub-class Action4, partition add functionn What is a partitionN Page Adjustment (combobox use)

In JBuilder, it is very easy to move the domain and method in the inheritance system of the class by refactoring. This explains this refactoring function, we first look at the following class inheritance system: Figure 15 Inheritance class diagram of Class The animal class is cat and horse and parent class, and animal contains two domain and one method. You can move the range of animal in a class to a s

); Sbset.add (HELLOSB); Sbset.add (HELLO2SB); Person Person1 = new person (1, "eke"); Person Person2 = new person (1, "eke"); Set personset = new HashSet (); Personset.add (Person1); Personset.add (Person2); Personwithhashcode code1 = new PersonwithhashCode (1, "eke"); Personwithhashcode Code2 = new Personwithhashcode (1, "eke"); Set codeset = new HashSet (); Codeset.add (CODE1); Codeset.add (CODE2); System.out.p

Combat (9)--Edit file name Actual combat MVC5+EF6+MYSQL Enterprise Network Disk Combat (10)--New Folder Actual combat MVC5+EF6+MYSQL Enterprise Network Disk Combat (11)--New Folder 2 Actual combat MVC5+EF6+MYSQL Enterprise Network Disk Combat (12)--new folder and upload file Actual combat MVC5+EF6+MYSQL Enterprise Network Disk Combat (13)--Edit folder Actual combat MVC5+EF6+MYSQL Enterprise Network Disk Combat (14)--Logical reconstruction Actual combat MVC5+EF6+MYSQL Enterprise Network Disk Com

Although using a lot of Ides, but as a lazy developer, I still like visual Studio, simple, convenient, powerful, a word, like ... Although Visual Studio comes with the ability to refactor code, the ReSharper Extension tool makes Visual Studio's code refactoring feature even more powerful. The ReSharper features include: 1 Analyzing Code QualityReal-time Code quality analysis works with C #, vb.net, XAML, ASP. asp, JavaScript, TypeScript, CSS, HTM

. Note, however, that a collection like HashMap is implemented as an array + linked list, so do not set the initial size to the size you estimate because it is almost 0 more likely to connect an object on a table. The initial size proposal is set to the power of N of 2, which can be set to new HashMap (128), and new HashMap (256) if it can be estimated to have 2000 elements. When copying large amounts of data, it is best to use the System.arraycopy () method [when the content length is greater t

1. Preface(Download source code, instruction, demo, see: Https://github.com/wangfupeng1988/wangEditor)I did a bootstrap-based Rich text editor--wangeditor and posted it on GitHub (Https://github.com/wangfupeng1988/wangEditor), Writing an article in the blog Park (http://www.cnblogs.com/wangfupeng1988/p/4088229.html) also received a lot of attention.The reason for this refactoring is for the following reasons. First, Bootstrap. It is a bit of

temporary variables *extract: Extract-I personally prefer to translate into "refinement" *duplicate: Copy Split: Anatomy Variable: variable Factor: Factor, factor Refactoring Principles First, what is refactoring? Noun form: An adjustment to the internal structure of software, in order to improve its understandable type and reduce its modification cost without changing the observed behavior of software.

PHP code maintenance, refactoring, and four causes analysis. There are four reasons for PHP code maintenance and difficulty in refactoring, and four reasons for this analysis. This article describes four reasons for PHP code maintenance and difficulty in refactoring. I would like to share it with you for your reference, for example, PHP code maintenance, four rea