Databases
StackOverflow2013
Postsdbo
PONhibernate queryover projection on detail entity fields
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PONhibernate queryover projection on detail entity fields
    primarykey
    data
    text
    <p>What I want to do is to be able to use projections with queryover. I have succeeded doing this using projections on first level only using AliasToBean Transformer but when i project on properties from a detail class nhibenate throws the following exception:</p> <pre><code> Could not find a setter for property 'FirstContact' in class 'Model.Personnel.Entities.Employee' at NHibernate.Properties.ChainedPropertyAccessor.GetSetter(Type theClass, String propertyName) at NHibernate.Transform.AliasToBeanResultTransformer.TransformTuple(Object[] tuple, String[] aliases) at NHibernate.Loader.Criteria.CriteriaLoader.GetResultList(IList results, IResultTransformer customResultTransformer) at NHibernate.Loader.Loader.ListIgnoreQueryCache(ISessionImplementor session, QueryParameters queryParameters) at NHibernate.Loader.Loader.List(ISessionImplementor session, QueryParameters queryParameters, ISet`1 querySpaces, IType[] resultTypes) at NHibernate.Loader.Criteria.CriteriaLoader.List(ISessionImplementor session) at NHibernate.Impl.SessionImpl.List(CriteriaImpl criteria, IList results) at NHibernate.Impl.CriteriaImpl.List(IList results) at NHibernate.Impl.CriteriaImpl.List[T]() at NHibernate.Criterion.QueryOver`1.List[U]() at NHibernate.Criterion.QueryOver`1.NHibernate.IQueryOver&lt;TRoot&gt;.List[U]() at Tests.Entities.EmployeeFacts.QueryEmployees() </code></pre> <p>This is my current code:</p> <pre><code>Employee anEmployee = null; Contact aContact = null; session.QueryOver(() =&gt; anEmployee).Left .JoinAlias(() =&gt; anEmployee.Contact, () =&gt; aContact) .OrderBy(() =&gt; aGender.Name).Asc .ThenBy(() =&gt; aContact.FirstContact).Asc .SelectList(builder =&gt; builder.Select(() =&gt; aContact.FirstContact) .WithAlias(() =&gt; aContact.FirstContact) .Select(() =&gt; anEmployee.FirstName) .WithAlias(() =&gt; anEmployee.FirstName)) .TransformUsing(Transformers.AliasToBean(typeof(Employee))) .List&lt;Employee&gt;(); </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USrazlebe
    1. USManar Husrieh
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COYou should be projecting to some sort of DTO containing just the fields you need instead of trying to project to the entity itself.
      singulars
      1. PONhibernate queryover projection on detail entity fields
      1. USAndrew Whitaker
    2. CO@AndrewWhitaker The problem is that my code is dynamic this is just a sample and what i am trying to do is figure a pattern so i can generate it with dynamic code. Is there any way to do it with the existing transformers or should i build my own transformer?!!
      singulars
      1. PONhibernate queryover projection on detail entity fields
      1. USManar Husrieh
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload