[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5440) JPA 2.0 CriteriaBuilder API and CollectionOfElements
JPA 2.0 CriteriaBuilder API and CollectionOfElements
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Key: HHH-5440
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5440
Project: Hibernate Core
Issue Type: Bug
Affects Versions: 3.5.4
Environment: hibernate-core 3.5.4, hibernate-entitymanager 3.5.4, hsqldb 2.0.0,
mac os x 10.6, java 1.6.0_20
Reporter: Koen Molkenboer
The situation is as follow:
I have an User class which has a collection of elements which is a Set of Role enum values
and I want to search for users which have one of more roles. I want to use the
CriteriaBuilder, because I have a search form with a lot of fields which are optional.
The User class:
@Entity
@Table(name = "USERS")
@Access(AccessType.FIELD)
public class User implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
private Long id;
@Column(name = "USERNAME", unique = true, nullable = false, length = 128)
private String username;
@ElementCollection
@Enumerated(EnumType.STRING)
@Column(name = "ROLE")
@CollectionTable(name = "USER_ROLES", joinColumns = @JoinColumn(name =
"USER_ID"))
private Set<Role> roles = new HashSet<Role>();
...
}
The enum Role:
public enum Role {
ROLE_1, ROLE_2, ROLE_3;
}
Creating the query with the CriteriaBuilder
Set<Role> roles = new HashSet<Role>();
roles.add(Role.ROLE_1);
roles.add(Role.ROLE_2);
CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<User> criteriaQuery = criteriaBuilder.createQuery(User.class);
Root<User> root = criteriaQuery.from(User.class);
criteriaQuery.where(root.join("roles").in(roles));
TypedQuery<User> query = entityManager.createQuery(criteriaQuery);
query.getResultList();
This is the exception:
java.lang.IllegalArgumentException: Parameter value [ROLE_2] was not matching type
[java.util.Set]
at
org.hibernate.ejb.AbstractQueryImpl.registerParameterBinding(AbstractQueryImpl.java:360)
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:359)
at
org.hibernate.ejb.criteria.CriteriaQueryCompiler$1$1.bind(CriteriaQueryCompiler.java:194)
at
org.hibernate.ejb.criteria.CriteriaQueryCompiler.compile(CriteriaQueryCompiler.java:247)
at
org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:437)
...
This all works with OpenJPA 2.0.0
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