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POUsing Factories in Presenters in a Model View Presenter and Domain Driven Design Project
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copied!<p>In domain driven design, it appears to be a good practice to use Factories to create your domain objects in your domain layer (as opposed to using a direct constructor or IoC). </p> <p>But what about using the domain object factories in a presenter layer. For instance, say that I was creating a domain object from user input obtained from the presenter. </p> <p>Here's an example, say I have a Configuration domain object that has a number of decimal settings.</p> <p>public class Configuration : PersistantObject {</p> <pre><code> public decimal temperature {get;set;} ...(times 20) public decimal gravity {get;set;} </code></pre> <p>}</p> <p>In order to create this object in the domain layer, rather than the presenter layer, I would have to pass each of these decimal values as function parameters. Creating an unwieldy function definition and call.</p> <p>ie ConfigurationService.CreateConfiguration(temperature, ...(x20), gravity);</p> <p>The perhaps better solution would be to create the Configuration object in the presenter layer, and assign all the values of the configuration object directly from the user input, skipping a lengthy function call.</p> <p>Configuration config = ConfigurationFactory.CreateNewConfiguration();</p> <p>config.temperature = temperature;</p> <p>..(x20).. = ...;</p> <p>config.gravity = gravity;</p> <p>ConfigurationService.SaveNewConfiguration(config);</p> <p>But I'm wondering if this approach is wrong and why? If both of these approaches are wrong, what is the best approach for creating a lengthy object from user input and why?</p> <p>Thanks!</p>

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