Refactoring With IntelliJ Refactoring Tools

이 글은 Intellij의 Refactoring 메뉴에 있는 모든 Refactoring 기능들을 jetbrains 사이트의 예제 및 일부 보완한 예제를 통해 리팩토링시 주의 사항이나 전후를 비교한다. com.example.refactorings.RefactoringTest 의 각 테스트를 따라서 보면서 화면과 같이 변화가 일어나도록 진행하면 됨

목차

• Change Signature
• Convert Anonymous to Inner Class
• Convert to Instance Method
• Encapsulate Fields
• Introduce Constants
• Introduce Field
• Extract Interface
• Extract Method
• Extract Super Class
• Introduce Variable
• introduce parameter
• Extract Delegate
• Replace Method with Method Object
• Replace Conditional Logic with Strategy Pattern
• Generify
• Inline Constructor
• Inline Superclass
• Inline To Anonymous Class
• Invert Boolean
• Make Static
• Migrate
• Copy Class
• Move Method
• Pull Members Up
• Remove Middleman
• Replace Constructor with Builder
• Replace Constructor with Factory Method
• Replace Inheritance with Delegation
• Replace Temp with Query
• Type Migration
• Wrap Return Value

Change Signature

• Cage 클래스의 생성자에 height를 추가

Convert Anonymous to Inner Class

• new나 생성자(Int())에 커서를 위치시키고 리팩토링

Convert to Instance Method

• 메소드명에 커서를 위치시키고 리팩토링

Encapsulate Fields

• 필드명에 커서를 위치시키고 리팩토링

Introduce Constants

• 변수(“string”)에 커서를 위치시키고 리팩토링

Introduce Field

• 변수(anotherClass.intValue())를 선태하고 리팩토링

Extract Interface

Extract Method

Extract Super Class

Introduce Variable

Introduce Parameter

Extract Delegate

Replace Method with Method Object

Replace Conditional Logic with Strategy Pattern

1. Replace Method with Method Object

2. Generalize Algorithm

3. Extract methods and implement them by copy & paste

4. Create Factory Method

5. Create Subclasses by Show Context Actions

6. Push Members Down

7. Remove Unused code using coverage

Generify

Inline Constructor

Inline Superclass

Inline To Anonymous Class

Invert Boolean

Make Static

Migrate

Copy Class

Move Method

• 레퍼런스 타입이 없는 경우는 static으로 변환 후 이동

Pull Members Up

Remove Middleman

Replace Constructor with Builder

Replace Constructor with Factory Method

Replace Inheritance with Delegation

Replace Temp with Query

Type Migration

Wrap Return Value