Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Before all: sorry for poor format, but on my 3" screen mobile write e is a pain...) <br/> IMO the problem is that your entity is composed only by the id. Hibernate probably fetch id during query and found a valid numbers of objects (your list size) but when is time to convert id to mapped entity during dehydrating, it run into problem fetching real data and building up your entity (maybe hibernate is getting other properties excluding those are part of id and run into a sort of select null from table where id-fields = prefetched id - just an idea; this is why you get a list filled of nulls). If you can reconsider your composite-id or try to add more properties to entity. Hope can help to solve or point to solution. Hibernate tools sometimes generate weird mappings... Else working with native query, addScalar() (instead of addEntity) and an aliastobean resulttransformer can be a work-around (If you are mapping a readonly view this can be resonable) </p> <p>Using SQLQuery:<br/></p> <p><code>session.createSQLQuery("select pkVwPersoneelslid, fkVwFunctie, familienaam, voornaam, code from VW_PERSONEELSLID where code = :code") .setParameter("code", code) .addScalar("pkVwPersoneelslid",DoubleType.INSTANCE) .addScalar("fkVwFunctie",DoubleType.INSTANCE) .addScalar("familienaam",StringType.INSTANCE) .addScalar("voornaam".StringType.INSTANCE) .addScalar("code".StringType.INSTANCE) .setResultTransformer(new AliasToBeanResultTransformer(VwPersoneelslid.class)) .list();</code><br/></p> <p>You need empty constructor and setter/getter; for any issues about check <a href="https://stackoverflow.com/questions/9605821/aliastobeanresulttransformermydto-class-fails-to-instantiate-mydto">this</a> SO answer.</p>
    singulars
    1. This table or related slice is empty.
    1. POHibernate retuns list with null values when querying Oracle views
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. USLuca Basso Ricci
    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. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COCould you give me an example?
      singulars
      1. PO
      1. USSnels Nick
    2. COI'm not an home to write an example but [here] ( http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/querysql.html) you can find example for addScalar() and point 16.1.5 for resultTransformer;
      singulars
      1. PO
      1. USLuca Basso Ricci
    3. COWhen I add addScalar() to the query, I get the following error: Exception in thread "main" java.lang.ClassCastException: java.lang.String cannot be cast to be.comp.model.neptunus.VwPersoneelslid at be.comp.permanenties.Main.main(Main.java:73)
      singulars
      1. PO
      1. USSnels Nick
 

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