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PONHibernate Eager Fetching Over Multiple Levels with StatelessSession
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  1. PONHibernate Eager Fetching Over Multiple Levels with StatelessSession
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    copied!<p>I've referenced the following thread which works with a Session but not a StatelessSession. <a href="https://stackoverflow.com/questions/332703/nhibernate-eager-fetching-over-multiple-levels">NHibernate Eager Fetching Over Multiple Levels</a> </p> <p>The problem I am having is similar to the above thread. I'm getting back 4xApplications and 4xRoles. I should be getting back 1xApplication and 4xRoles.</p> <p>Criteria query:</p> <pre><code>return StatelessSession.CreateCriteria(typeof(Application)) .SetResultTransformer(Transformers.DistinctRootEntity) .SetFetchMode("Roles", FetchMode.Join) .List&lt;Application&gt;(); </code></pre> <p>My entities and mappings:</p> <pre><code>public class Application : IComparable&lt;Application&gt; { public virtual int Id { get; set; } public virtual string InternalName { get; set; } public virtual ICollection&lt;Role&gt; Roles { get; set; } #region IComparable&lt;Application&gt; Members public virtual int CompareTo(Application other) { return Id.CompareTo(other.Id); } #endregion </code></pre> <p>}</p> <pre><code>public class Role : IComparable&lt;Role&gt; { public virtual int Id { get; set; } public virtual string Name { get; set; } public virtual Application Application { get; set; } public virtual int CompareTo(Role other) { return Id.CompareTo(other.Id); } </code></pre> <p>}</p> <pre><code>public class ApplicationMapping : ClassMap&lt;Application&gt; { public ApplicationMapping() { Table("Application"); Id(x =&gt; x.Id, "ID").GeneratedBy.Assigned(); ; //.Column("ID"); Map(x =&gt; x.InternalName); HasMany(x =&gt; x.Roles).Inverse().Cascade.All().AsSet().Not.LazyLoad(); } } public class RoleMapping : ClassMap&lt;Role&gt; { public RoleMapping() { Table("Roles"); Id(x =&gt; x.Id, "ID").GeneratedBy.Assigned(); References(x =&gt; x.Application, "ApplicationID").Not.LazyLoad(); Map(x =&gt; x.Name); HasMany(x =&gt; x.RightsUsers).Table("UserRoleXRef").Inverse().Cascade.All().AsSet(); } } </code></pre> <p>hbm.xml</p> <pre><code>&lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="property" auto-import="true" default-cascade="none" default-lazy="true"&gt; &lt;class xmlns="urn:nhibernate-mapping-2.2" name="Quad.App.Test.DataAccess.NHibernate.Scaffolding.Entities.Application, Quad.App.Test, Version=1.4.0.742, Culture=neutral, PublicKeyToken=null" table="Application"&gt; &lt;id name="Id" type="System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="ID" /&gt; &lt;generator class="assigned" /&gt; &lt;/id&gt; &lt;property name="InternalName" type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="InternalName" /&gt; &lt;/property&gt; &lt;set cascade="all" inverse="true" lazy="false" name="Roles"&gt; &lt;key&gt; &lt;column name="ApplicationID" /&gt; &lt;/key&gt; &lt;one-to-many class="Quad.App.Test.DataAccess.NHibernate.Scaffolding.Entities.Role, Quad.App.Test, Version=1.4.0.742, Culture=neutral, PublicKeyToken=null" /&gt; &lt;/set&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; &lt;hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="property" auto-import="true" default-cascade="none" default-lazy="true"&gt; &lt;class xmlns="urn:nhibernate-mapping-2.2" name="Quad.App.Test.DataAccess.NHibernate.Scaffolding.Entities.Role, Quad.App.Test, Version=1.4.0.742, Culture=neutral, PublicKeyToken=null" table="Roles"&gt; &lt;id name="Id" type="System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="ID" /&gt; &lt;generator class="assigned" /&gt; &lt;/id&gt; &lt;property name="Name" type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt; &lt;column name="Name" /&gt; &lt;/property&gt; &lt;many-to-one class="Quad.App.Test.DataAccess.NHibernate.Scaffolding.Entities.Application, Quad.App.Test, Version=1.4.0.742, Culture=neutral, PublicKeyToken=null" lazy="false" name="Application"&gt; &lt;column name="ApplicationID" /&gt; &lt;/many-to-one&gt; &lt;/class&gt; &lt;/hibernate-mapping&gt; </code></pre> <p>SQL:</p> <pre><code>SELECT this_.ID as ID1_1_, this_.InternalName as Internal2_1_1_, roles2_.ApplicationID as Applicat3_3_, roles2_.ID as ID3_, roles2_.ID as ID2_0_, roles2_.Name as Name2_0_, roles2_.ApplicationID as Applicat3_2_0_ FROM dbo.Application this_ left outer join dbo.Roles roles2_ on this_.ID=roles2_.ApplicationID </code></pre>
 

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