Hi everyone,

I have a problem while developping my HQL query:

This is a part of my query :

" SELECT new RetourRequeteOTBean.class.getName() ( ODT.numero , ODT.version, elements(ODT.listeOMs) FROM OrdreDeTravailVO as ODT "


numero is an integer , versions is an integer and listeOMs is a Collection.

The constructor of RetourRequeteOTBean has the correct type with RetourRequeteOTBean(int, int, List ).


But it doesnt work, i've got an error it saying that the constructor is not correct, do you have any ideas ?


--
Vick

The error is

"Unable to locate appropriate constructor on class [fr.grouperatp.ratp.applications.gmaomrb.maintenance.transverse.bean.entite.RetourRequeteOTBean]
[cause=org.hibernate.PropertyNotFoundException: no appropriate constructor in class: fr.grouperatp.ratp.applications.gmaomrb.maintenance.transverse.bean.entite.RetourRequeteOTBean]"

If RetourRequeteOTBean takes (int,int,List) in its constructor and your are providing (int,int,Collection) then this is incorrect. Collection is an interface which is implemented by List and several other classes. If you are sending a Collection to the constructor, it has not way of knowing which implementation of Collection the object represents! This is why you can assign a List to a Collection reference, but not a Collection to a List. You should define a new constructor for RetourRequeteOTBean that takes a Collection and internally transfers its contents to a list if necessary.

Hope that helps,
Kate.