Spring-data-jpa newbie question

[sonoerin]

I am intrigued by the combination of QueryDSL/Spring-data-dpa/Hibernate, but I must not quite get it yet as even a simple example doesn't work for me. If there an online tutorial or documentation that would point me in the right direction, I would appreciate the link because so far I haven't found it. Here is my example:

Spring 3.1.1
Hibernate 4.0.1FINAL
QueryDSL 2.7.0

Two tables without a foreign key between them.
Two entities:

@Entity
@Table(name = "User", uniqueConstraints = @UniqueConstraint(columnNames = "UserName"))
public class User {

    // Fields
    private Long userId;
    private Integer status = 0;
    private String password;
    private String userName;
    private UserRole userRole;

    @Id
    @Column(name = "UserId", unique = true, nullable = false)
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    public Long getUserId() {
        return this.userId;
    }

    @OneToOne
    @JoinColumn(name = "userRoleId")
    public UserRole getUserRole() {
        return userRole;
    }
...
}

@Entity
@Table(name = "UserRole")
public class UserRole {

    // Fields
    private Long userRoleId;
    private String userRoleDescriptionShort;
    private String userRoleDescription;
   
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    // @PrimaryKeyJoinColumn
    public Long getUserRoleId() {
        return this.userRoleId;
    }
...
}

I have two Repositories interfaces:

@Repository
public interface IUserRepository extends JpaRepository<User, Long> {
    public User findByUserName(String userName);

}

public interface IUserRoleRepository extends JpaRepository<UserRole, Long> {
    public UserRole findByRoleDescriptionShort(String roleDescriptionShort);
}

and two implementations:

@Repository
@Transactional(readOnly = true)
public class UserRepository extends QueryDslRepositorySupport implements IUserRepository {

    @PersistenceContext
    private EntityManager em;

    @Override
    public User findByUserName(String userName) {
        QUser user = QUser.user;
        User auser = (User) from(user).where(user.userName.eq(userName));
        return auser;
    }

@Repository
@Transactional(readOnly = true)
public class UserRoleRepository extends QueryDslRepositorySupport implements IUserRoleRepository {

    @PersistenceContext
    private EntityManager em;

    @Override
    public UserRole findByRoleDescriptionShort(String roleDescriptionShort) {
        QUserRole userRole = QUserRole.userRole;
        UserRole arole = (UserRole) from(userRole).where(userRole.userRoleDescriptionShort.equalsIgnoreCase("Owner"));
        return arole;
    }

However, when I try to build I get this:

Caused by: java.lang.IllegalArgumentException: No property role found for type class com.edelweissco.model.people.UserRole
at org.springframework.data.repository.query.parser.P roperty.<init>(Property.java:76)
at org.springframework.data.repository.query.parser.P roperty.<init>(Property.java:97)
at org.springframework.data.repository.query.parser.P roperty.create(Property.java:312)
at org.springframework.data.repository.query.parser.P roperty.create(Property.java:326)
at org.springframework.data.repository.query.parser.P roperty.create(Property.java:326)
at org.springframework.data.repository.query.parser.P roperty.create(Property.java:292)
at org.springframework.data.repository.query.parser.P roperty.from(Property.java:251)
at org.springframework.data.repository.query.parser.P roperty.from(Property.java:232)
at org.springframework.data.repository.query.parser.P art.<init>(Part.java:48)
at org.springframework.data.repository.query.parser.P artTree$OrPart.<init>(PartTree.java:242)
at org.springframework.data.repository.query.parser.P artTree.buildTree(PartTree.java:101)
at org.springframework.data.repository.query.parser.P artTree.<init>(PartTree.java:77)
at org.springframework.data.jpa.repository.query.Part TreeJpaQuery.<init>(PartTreeJpaQuery.java:56)
at org.springframework.data.jpa.repository.query.JpaQ ueryLookupStrategy$CreateQueryLookupStrategy.resol veQuery(JpaQueryLookupStrategy.java:92)
at org.springframework.data.jpa.repository.query.JpaQ ueryLookupStrategy$CreateIfNotFoundQueryLookupStra tegy.resolveQuery(JpaQueryLookupStrategy.java:159)
at org.springframework.data.jpa.repository.query.JpaQ ueryLookupStrategy$AbstractQueryLookupStrategy.res olveQuery(JpaQueryLookupStrategy.java:71)
at org.springframework.data.repository.core.support.R epositoryFactorySupport$QueryExecutorMethodInterce ptor.<init>(RepositoryFactorySupport.java:303)
at org.springframework.data.repository.core.support.R epositoryFactorySupport.getRepository(RepositoryFa ctorySupport.java:157)
at org.springframework.data.repository.core.support.R epositoryFactoryBeanSupport.getObject(RepositoryFa ctoryBeanSupport.java:120)
at org.springframework.data.repository.core.support.R epositoryFactoryBeanSupport.getObject(RepositoryFa ctoryBeanSupport.java:39)
at org.springframework.beans.factory.support.FactoryB eanRegistrySupport.doGetObjectFromFactoryBean(Fact oryBeanRegistrySupport.java:142)

As I understand it, spring-data-jpa means I don't have to provide an implementation of the Repository. But because I want to use QueryDSL, I need to write the implementation?

Thank you for any assistance, I have been stumped on this and can't seem to find the solution.