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PONhibernate query Entity based on child of child property
 

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  1. PONhibernate query Entity based on child of child property
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    <p>I have an entity which has as child entity which has a collection of entities on it. </p> <pre><code>public class Entity1 { public virtual Entity2 Entity2 {get; set} } public class Entity2 { private readonly IList&lt;Entity3&gt; _entity3s = new List&lt;Entity3&gt;(); public virtual IEnumerable&lt;Entity3&gt; GetEntity3s() { return _entity3s; } public virtual void RemoveEntity3(Entity3 entity3) { _entity3s.Remove(entity3); } public virtual void AddEntity3(Entity3 entity3) { if (!entity3.IsNew() &amp;&amp; _entity3s.Contains(entity3)) return; _entity3s.Add(entity3); } } public class Entity3 { public virtual int Id {get;set;} } </code></pre> <p>I have the Entity3.Id and I need all the Entity1s that match so something like</p> <pre><code>session.Query&lt;Entity1&gt;(x=&gt;x.Entity2.Entity3s.Any(y=&gt;y.Id = 500)); </code></pre> <p>I have tried linq as well as queryover and both choke on the "Any" command.<br> Can anyone steer me in the right direction?<br> &lt;--- Edit ----><br> Right so I guess I had a bunch of things wrong and now I've fixed them all and my query works if I expose the enumerable directly, however it does not work when I have my collection encapsulated as I do above.<br> the error I'm getting is </p> <blockquote> <p>Cannot parse expression '[-1].Entity2' as it has an unsupported type. Only query sources (that is, expressions that implement IEnumerable) and query operators can be parsed.<br> inner exception<br> Message "Expected a type implementing IEnumerable, but found '...Entity2'.\r\nParameter name: expression" string </p> </blockquote> <p>Thanks,</p> <p>Raif</p>
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    1. PTQuestion
    1. USmathieu
    1. USRaif
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    1. COPost the actual error you're getting (full exception). And please, please, get a user name.
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      1. PONhibernate query Entity based on child of child property
      1. USDiego Mijelshon
    2. COI hope to understand correctly your question. You have 3 tables: A OneToOne B OneToMany C; you want to take A data filtering C, is it right?
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      1. PONhibernate query Entity based on child of child property
      1. USFaber
    3. COyes, that is correct, however, my OneToMany is encapsulated in a method. so I need `(x=>x.Entity2.GetEntity3s.FirstOrDefault(u=>u.userId == 1234))` or `(x=>x.Entity2.GetEntity3s.Any(u=>u.userId == 1234))` Thanks ))`
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      1. PONhibernate query Entity based on child of child property
      1. USRaif
 

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