liujiefengfeng/refactoring

Refactoring

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Composing Methods(composing methods)

• Consolidate Conditional Expression
• Decompose Conditional
• Extract Method
• Extract Surrounding Method
• Extract Variable
• Form Template Method
• Inline Method
• Inline Temp
• Move Eval from Runtime to Parse Time
• Remove Assignments to Parameters
• Replace Loop with Collection Closure Method
• Replace Method with Method Object
• Replace Temp with Query
• Split Temporary Variable
• Substitute Algorithm

Moving Features Between Objects(moving features)

• Extract Class
• Extract Module
• Hide Delegate
• Inline Class
• Inline Module
• Introduce Foreign Method
• Introduce Local Extension
• Move Field
• Move Method
• Remove Middle Man

Organizing Data(organizing data)

• Change Bidirectional Association to Unidirectional
• Change Reference to Value
• Change Unidirectional Association to Bidirectional
• Change Value to Reference
• Duplicate Observed Data
• Eagerly Initialized Attribute
• Encapsulate Collection
• Encapsulate Field
• Lazily Initialized Attribute
• Replace Array with Object
• Replace Data Value with Object
• Replace Magic Number with Symbolic Constant
• Replace Record with Data Class
• Replace Subclass with Fields
• Replace Type Code with Class
• Replace Type Code with State/Strategy
• Replace Type Code with Subclasses
• Self Encapsulate Field

Simplifying Conditional Expressions(conditionals)

• Consolidate Conditional Expression
• Consolidate Duplicate Conditional Fragments
• Decompose Conditional
• Introduce Assertion
• Introduce Null Object
• Recompose Conditional
• Remove Control Flag
• Replace Conditional with Polymorphism
• Replace Exception with Test
• Replace Nested Conditional with Guard Clauses

Making Method Calls Simpler(method calls)

• Add Parameter
• Encapsulate Downcast
• Hide Method
• Introduce Expression Builder
• Introduce Gateway
• Introduce Named Parameter
• Introduce Parameter Object
• Parameterize Method
• Preserve Whole Object
• Remove Control Flag
• Remove Named Parameter
• Remove Parameter
• Remove Setting Method
• Rename Method
• Replace Constructor with Factory Method
• Replace Error Code with Exception
• Replace Exception with Test
• Replace Parameter with Explicit Methods
• Replace Parameter with Method
• Separate Query from Modifier

Dealing with Generalization(inheritance)

• Collapse Hierarchy
• Encapsulate Downcast
• Extract Interface
• Extract Module
• Extract Subclass
• Extract Superclass
• Form Template Method
• Introduce Null Object
• Pull Up Constructor Body
• Pull Up Field
• Pull Up Method
• Push Down Field
• Push Down Method
• Replace Abstract Superclass with Module
• Replace Conditional with Polymorphism
• Replace Delegation With Hierarchy
• Replace Delegation with Inheritance
• Replace Inheritance with Delegation
• Replace Subclass with Fields
• Replace Type Code with Subclasses