[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5755) javax.persistence.criteria.Expression.as() is broken

[Andreas Benneke (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=44170#comment-44170 ] 

Andreas Benneke commented on HHH-5755:
--------------------------------------

Another vote from me!

No idea why this is "Minor" - it was a show stopper for us because we have quite a few casts in our queries.

As a workaround be "pimped" our Dialect to effectively do the same as the patch does - not beautiful, but it works - perhaps it helps someone:

{code:java}

   @Override
   public String getCastTypeName(final int code)
   {
      final String caller = new Throwable().getStackTrace()[1].getClassName();
      if (caller.startsWith("org.hibernate.ejb.criteria.CriteriaQueryCompiler"))
      {
         return getHibernateTypeName(code);
      }
      else
      {
         return super.getCastTypeName(code);
      }
   }
{code}

> javax.persistence.criteria.Expression.as() is broken
> ----------------------------------------------------
>
>                 Key: HHH-5755
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5755
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: entity-manager
>    Affects Versions: 3.6.0
>            Reporter: Artem Troitskiy
>            Priority: Minor
>         Attachments: HHH-5755.patch
>
>
> When I try to execute criteria query containing typecast to {{String}}
> {noformat}
> CriteriaQuery<Product> criteria = builder.createQuery( Product.class );
> Root<Product> from = criteria.from( Product.class );
> criteria.where(builder.like(from.get("partNumber").as(String.class), "1%"));
> List<Product> result = em.createQuery( criteria ).getResultList();
> {noformat}
> I get the following exception
> {quote}
> org.hibernate.hql.ast.QuerySyntaxException: expecting CLOSE, found '(' near line 1, column 132 [select generatedAlias0 from org.hibernate.ejb.metamodel.Product as generatedAlias0 where cast(generatedAlias0.partNumber as varchar(255)) like :param0]
> {quote}
> As you can see, SQL type is used in HQL {{cast}} clause. It's caused by {{CriteriaQueryCompiler.RenderingContext.getCastType()}} that erroneously return SQL typename instead of Hibernate typename.

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