以下场景要遵循的设计模式

Question

I have three different types of setups(a class corresponding to each). Consider, that we know the setup that has to be followed (say out of 1, 2 and 3 ). Now, each setup requires different settings.

1. Suppose, we have SettingB, SettingC, SettingD that is common to all the three setups except SettingA . So, what I did was, I have a common interface Settings for all the settings type(A, B and C).

    interface IConfigureSettings { void ConfigureSettings(); }

   Only this method will be exposed for each setting type to configure for each setup.

2. Within SettingA, we have sub settings( SubSettingsAA, SubSettingsAB, SubSettingsAC ).
   So for this, I have an abstract class for SettingA which is inherited by SubSettingAA, SubSettingAB, SubSettingAC.

    abstract class SettingA : IConfigureSettings { List<SettingA> _subSettings; public void ConfigureSettings() { //Should Perform configuration for the given site. This is what I need. } }

3. Out of these sub settings both SubSettingsAA and SubSettingsAB may have 2 different configurations (say configurationA(), ConfigurationB() ). ConfigurationA() is not in SubSettingsA. SubSettingsAB class contains both ConfiugrationA() and ConfigurationB().

    class SubSettingsAA : SettingA { ConfigurationB(); } class SubSettingsAB : SettingA { ConfigurationA(); ConfigurationB(); } class SubSettingAC : SettingA { ConfigurationC(); ConfigurationD(); }

Now, in case of Setup1 only ConfigurationA() is visible , whereas in case of setup2 and setup3 everything is to be configured. Configuration's() in SubSettingAC is to be configured for all the three setups.

So, this is what I have. Now, what I want is to just call ConfigureSettings() for SettingA and it should configure everything based on the setup type. Consider, setup type is available.

Answer 1

Patterns are not the panacea of program design. They do not replace traditional object-oriented analysis techniques like CRC cards or use-case modeling. To use an architectural analogy, analysis lets you determine that your house needs 200 amps of electricity. Patterns let you determine how the wiring will be installed. Patterns do help you think about the problems you may encounter while designing a system. Therefore, a generic, pattern-based solution is often more robust than a solution designed by one individual to solve a specific problem. Given the number of design patterns in common use (as well as many more being invented and discovered almost daily) it can sometimes be hard to choose the pattern that suits your needs. The first thing you should decide is whether the problem is fundamentally creational, structural, or behavioral. Some problems, of course, have aspects of two or even three, and may require you to mix and match patterns.

From gofpatterns

However having said that I think the first part of your questions seems to be creational and the Builder pattern seems to be the closest match. I would use composition ( through interfaces) to set the configurations as per the sub settings. Also the classes Configuration A and SubsettingsAC seem to be Base classes for Configuration and Subsetting classes.