Inhalte

• Home
  • License Agreement
  • Introduction
  • IDE Settings
  • Project
  • Repository
  • Comments
  • reStructuredText
  • Naming
  • Formatting
    • Formatting Structured Text and Extended Structured Text ExST
    • Formatting SFC
  • Practices
    • Practices Introduction
    • Common Practices
      • Common Practices Interfaces
      • Common Practices Data Structures vs Objects
      • Common Practices Inheritance
      • Common Practices Dependencies
        • Common Practices Dependencies Examples
          • Common Practices Dependencies Examples Dependency Injection
            • Dependency Injection Introduction
            • Dependency Injection Common Interfaces
            • Dependency Injection Devices
            • Dependency Injection Inter-Stopper-Communication
            • Dependency Injection Stopper Workflows
            • Dependency Injection Stopper
            • Dependency Injection Declaration in Main
            • Dependency Injection Summary
          • Dependencies Examples Abstract Factories
            • Abstract Factories Introduction
            • Abstract Factories Object
            • Abstract Factories Alarm Messages
            • Abstract Factories Alarm Message Service
              • Alarm Message Service Introduction
              • Alarm Message Service Common Interfaces
              • Alarm Message Service Collection Interfaces
              • Alarm Message Service Factories
              • Alarm Message Service Collection Implementations
              • Alarm Message Service Alarm Message Distributor
            • Abstract Factories OPC-UA HMI Connection
            • Abstract Factories Test it
            • Abstract Factories Summary
      • Common Practices ControlStatus Words
      • Common Practices Scope Pointer
      • Common Practices Divide The Libraries
      • Common Practices Return Values
    • STExST Practices
      • STExST Practices GOTO JMP
      • STExST Practices CASE OF
      • STExST Practices Assignment as Expression
      • STExST Practices Namespace Alias
      • STExST Practices VAR_OUTPUT
    • SFC Practices
      • SFC Practices Jumps
      • SFC Practices Cyclic Rotations
  • Glossary
    • Glossary A
    • Glossary B
    • Glossary C
      • Glossary Class
    • Glossary D
      • Glossary Data Transfer Object
      • Glossary Dto
    • Glossary E
    • Glossary F
      • Glossary Foo
    • Glossary G
    • Glossary H
    • Glossary I
    • Glossary J
    • Glossary K
    • Glossary L
    • Glossary M
    • Glossary N
    • Glossary O
    • Glossary P
    • Glossary Q
    • Glossary R
    • Glossary S
    • Glossary T
    • Glossary U
    • Glossary V
    • Glossary W
    • Glossary X
    • Glossary Y
    • Glossary Z

Abstract Factories: Summary

Table of Contents

Summary

The FactoryProvider class and the abstract factories allow injecting other concrete implementations. There is also no declaration hell as in the dependency injection example. If you need a different implementation, all you have to do is implement the new class with the associated factory. Create an instance of the FactoryProvider and pass an instance of the new factory to the constructor, that's it! If everything is fine as it is, then you don't need to do anything. Configuration by exception. Factory providers can be designed as flexibly as you like, it would be conceivable, among other things, to use a dictionary internally so that factories can be registered.