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POOne service for each entity?
 

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    <p>Again - i'm confused about DDD things :)</p> <p>I have architeture (I'm still working on it) that in short hand looks like that:</p> <pre><code>DataLayer: EntityDao -&gt; Implementing domain layer interfaces (NHibernate) DomainLayer: EntityRepository -&gt; Repository for each entity with injected Dao DomainObjects/Entitys -&gt; Some logic UI ASP.Net MVC </code></pre> <p>And I'm right now in that point where I feel to create and use some Service class. I have some questions with that:</p> <p>1.Should I create at least one service for each entity/domain object ?</p> <p>2.a.Should services have "query" method like Find, FIndAll, FindAll(LINQQuery)?</p> <p>2.b.Should I stop to use Repositorys in upper layers (UI) to get sets ("Find"-like methods) of entity's and start to use only services?</p> <p>3.If answer on 2 question is No - Should I use Services and Repository in parallel fashion (When in UI I just need to get all entity's I use Repository.FindAll, when I need to get some "logical" list of that entity's i use Service.FindXXX method)?</p> <p>4.Somehow I feel that Repositorys don't fit in Domain layer - should I separate them somehow and in DOMAIN leave only domain specific objects like Entity's and Services ? If Yes - give me some structure example how to achieve that. </p> <p>Examples of some objects:</p> <p>Dao:</p> <pre><code>public class NHibernateDao&lt;T&gt; : IDao&lt;T&gt; { public NHibernateDao() { } public T Get(object id) { T entity = (T)NHibernateSession.Get(entityType, id); return entity; } public T Load(object id) { T entity = (T)NHibernateSession.Load(entityType, id); return entity; } public virtual T Update(T entity) { NHibernateSession.Update(entity); return entity; } ... </code></pre> <p>Repository:</p> <pre><code>public class BaseRepository&lt;T&gt;:IRepository&lt;T&gt; { private DataInterfaces.IDao&lt;T&gt; mDao; public virtual T Get(object id) { return mDao.Get(id); } public virtual void Delete(T entity) { mDao.Delete(entity); } public virtual T Update(T entity) { return mDao.Update(entity); } public virtual IQueryable&lt;T&gt; FindAll() { return mDao.FindAll(); } ... </code></pre> <p>Domain objects, at the moment , it's mainly get/set container - background of this question is to remove that anemic model. </p>
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    1. COCould you give an example of an `EntityDao`, `EntityRepository` and an `Entity`?
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    2. COAh, that's clear. If that's what you mean by DAO and Repository, then Kostassoid is right and they're the same thing actually.
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