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PODDD - Is a factory allowed to access a repository?
 

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  1. PODDD - Is a factory allowed to access a repository?
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    <p>I'm having an aggregate-root called Person. The person also has an Address. The relation between these Classes is ManyToOne (Many Persons share the same Address). </p> <p>This means that when I'm creating a new Person with a specific address using a factory, I'd have to check if a same address already exists in the database and use an exisiting address for the user. </p> <p>This requires my factory to have access to an Address-Repository (or directly to the database). Is this allowed? And if not, what would be a better approach to do this?</p> <p>//EDIT My solution is now the following:</p> <p>I have a class PersonService which holds the logic to register a person. The method <code>register()</code> already takes an Address-Object which is created by an AddressFactory. The Addressfactory has access to an AddressRepository to check, whether the entered address already exists or not. Here's the code:</p> <pre><code>public class PersonService{ @Inject private PersonRepository pRepo; public Person register(Name name,..., Address address){ //check if same person exists, //create person, persist person return person; } } public class AddressFactory{ @Inject AddressRepository aRepo; public Address create(String street, int number, ...){ //check if address with attribues exists in repo, //if not create new address return address; } } </code></pre> <p>and in some bean this method is called like this:</p> <pre><code>personService.register(new Name("test"),..., addressFactory.create("Some street", 1,...)) </code></pre> <p>What do you think?</p>
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    1. COJust for clarification - you're talking about deducing an existing address from what the user enters, right ? Will you ask the user if (s)he wants to pick that address or silently equate it with the specified address ?
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    2. COsilently equating is the idea.
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