shabeesh / generic-dao Goto Github PK

EntityManager injected via default persistence unit:

    @PersistenceContext
    public final void setEntityManager(EntityManager entityManager) {
        this.entityManager = entityManager;
    }

Howto deal with several persistence units?

I have:

My DAO Interface:

{{{
public interface UserDao extends IDao<User, Long> {

    void persist(User user);

    User findByLogin(String login);

}
}}}


My DAO Implementation:

{{{
@Repository
@Transactional(readOnly = true)
public class UserDaoImpl extends GenericDao<User, Long> implements UserDao {

    public UserDaoImpl() {
    }

    @SuppressWarnings("unchecked")
    public User findByLogin(String login) {
        List<User> list = findByCriteria(Criteria.forClass(User.class).add(
                Restrictions.eq("login", login)));

        if (list == null || list.size() != 1) {
            return null;
        }

        return list.get(0);

    }
}

}}}

But when i need save in the controller with: userDao.save(user) nothings
happen in the database.


I have using Spring + Spirng MVC + JPA + Hibernate

I need help, thanks you.


Please provide any additional information below.

What steps will reproduce the problem?
1. i download the code (svn)
2. run mvn install 

maybe a dependence in the pom file ?

-When running VATRManagerTest.findAll() as a JUnit test, I'm getting a
ClassCastException: 
Caused by: java.lang.ClassCastException: java.lang.Class cannot be cast to
java.lang.reflect.ParameterizedType
    at com.szczytowski.genericdao.impl.GenericDao.<init>(GenericDao.java:53)
    at be.fodfin.proto.genericdao.VATRManagerImpl.<init>(VATRManagerImpl.java:11)

-What version of the product are you using? On what operating system?
I'm using genericdao v1.0 on WindowsXP

-Please provide any additional information below.
Eclipse project has been attached.

I have noticed that findByExample method only take care of annotated fields
but has no effect if the annotations are in getter methods.

Hi Guys,

I wanted to post a query, could not find a better place to place this. :)
Your framework will force the users to implement EntityImpl for all the 
entities.
Why is it required? The other similar frameworks like the ones with hibernate 
generic support do not have constraints like this. I would no like to alter my 
existing entities just to use a new framework. Can it not be done without this 
constraint?

Cheers
Sushant
[email protected]

What steps will reproduce the problem?
1. Create a method that make a query via findByExample
2. Execute the methode
3. The list return contains the whole table

With an example containing my primary key I expect only one result but I
alway have the whole table.

I'm using Generic DAO 1.0


Here is an example of my way of using it.
UserObject implements IEntity<Long>
UserObjectManager extends IDao<UserObject, Long>
UserObjectManagerImpl extends GenericDao<UserObject, Long> implements
UserObjectManager 

UserObjet userObject = new UserObject();
userObject.setId(new Long(0));

List<UserObject> myList = userObjectManager.findByExample(userObject)

System.out.println("size = "+myList.size());
-> I got 1321;


How do I have to use this method, findByExemple.

if i performe the same query with a criteria it works
findByCriteria(Criteria.forClass(UserObject.class).add(Restrictions.eq("login",
login)))


Please, help

Thanks you

Given some Java code like:

  Criteria criteria = Criteria.forClass(Projet.class);
  criteria.add(Restrictions.eq("campagne.id", idCampagne));

  DAO.findByCriteria(criteria);

Using EclipseLink JPA provider (I updated the pom.xml), I get this error:

java.lang.IllegalArgumentException: An exception occurred while creating a 
query in EntityManager: 
Exception Description: Syntax error parsing the query [select this from Projet 
as this where this.campagne.id=?], line 0, column -1: unexpected end of query.
Internal Exception: NoViableAltException(-1!=[792:1: 
comparisonExpressionRightOperand returns [Object node] : (n= 
arithmeticExpression | n= nonArithmeticScalarExpression | n= anyOrAllExpression 
);])
    at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1373)
    at com.szczytowski.genericdao.criteria.Criteria.prepareQuery(Criteria.java:333)
    at com.szczytowski.genericdao.criteria.Criteria.list(Criteria.java:236)
    at com.szczytowski.genericdao.impl.GenericDao.findByCriteria(GenericDao.java:319)
[...]


It looks like "select this from Projet as this where this.campagne.id=?" is not 
a valid JPQL query.

AFAIK numbered parameters must be specified with an index, e.g.:
  "select this from Projet as this where this.campagne.id=?1"

Whereas Hibernate HQL doesn't need this index, that's why included tests for 
criteria succeed.

Hi EntityManager in GenericDao is not injected. This could be, because
GenericDao is not a EJB class managed. How can inject automatically ?

Thanks.
Edson.