[hibernate-issues] [Hibernate-JIRA] Commented: (EJB-249) Query.getResultList() throws undocumented EntityNotFoundException
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http://opensource.atlassian.com/projects/hibernate/browse/EJB-249?page=co...
]
Koda Janh commented on EJB-249:
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Emmanuel,
The main point of the bug report was not that Hibernate should give a less misleading
exception but rather that it should throw only the declared exceptions according to the
specification. Two alternatives are:
1) Hibernate catches EntityNotFoundException in getResultList() and returns an empty list
instead (seems to best choice from a specification point of view, but harder to debug
problems), or
2) Hibernate wraps the EntityNotFoundException using IllegalStateException which is
declared by the specification (easier to debug problems but IllegalStateException
wasn't strictly designed for this sort of exceptional case)
What do you think?
Query.getResultList() throws undocumented EntityNotFoundException
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Key: EJB-249
URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-249
Project: Hibernate Entity Manager
Type: Bug
Components: EntityManager
Versions: 3.2.0.ga
Reporter: Koda Janh
Attachments: stacktrace.txt
I am issuing the query: "select user from " + User.class.getName() + " as
user"
and I am getting this stack-trace:
javax.persistence.EntityNotFoundException: Unable to find mobi.database.domain.Server
with id 249
at
org.hibernate.ejb.Ejb3Configuration$Ejb3EntityNotFoundDelegate.handleEntityNotFound(Ejb3Configuration.java:107)
at
org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:143)
at
org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:193)
at
org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:101)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:846)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:266)
at org.hibernate.type.EntityType.resolve(EntityType.java:303)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:116)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2144)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2028)
at org.hibernate.loader.Loader.list(Loader.java:2023)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:393)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:64)
I've tracked down the problem to a "@Column(nullable=false)". Specifically,
if one of the objects in the result-set contain a null field that is defined as
"nullable=false" then the above exception will occur.
This behavior should either be documented in the Javadoc or the implementation should be
changed to throw one of the declared exceptions instead. Also, the actual error message is
misleading in that the specified object *is* found, but it violates the constraints of the
ORM mapping.
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