Problems with annotations in 3.2.0.ga

darkit · **Joined:** Thu Aug 28, 2003 6:30 am **Posts:** 58

I've just migrated from 3.2.0.rc2 to 3.2.0.ga
Everything was working in rc2.
Now i have such exception during initialization.

org.hibernate.AnnotationException: mappedBy reference an unknown target entity property: com.mypkg.core.dao.hibernate.persistent.OwnedUserStocks.stock in com.mypkg.core.dao.hibernate.persistent.Stock.ownedStocks
at org.hibernate.cfg.annotations.CollectionBinder.bindStarToManySecondPass(CollectionBinder.java:506)
at org.hibernate.cfg.annotations.CollectionBinder$1.secondPass(CollectionBinder.java:471)
at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:43)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1054)
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:296)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1210)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:807)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:740)

Here's my annotations:

Code:

@Entity
@DiscriminatorValue("owned")
@Proxy(lazy = true, proxyClass = com.mypkg.core.dao.hibernate.persistent.OwnedUserStocks.class)
public class OwnedUserStocks extends UserStocks {
}

Code:

@Entity
@DiscriminatorValue("owed")
@Proxy(lazy = true, proxyClass = com.mypkg.core.dao.hibernate.persistent.OwedUserStocks.class)
public class OwedUserStocks extends UserStocks implements IOwedUserStocks {
  ...
}

Code:

@BatchSize(size = 20)
@Entity
@org.hibernate.annotations.Entity(dynamicInsert = true, dynamicUpdate = true)
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(
        name = "stock_type",
        discriminatorType = DiscriminatorType.STRING
)
@DiscriminatorValue("common")
@Table(name = "user_stocks")
public abstract class UserStocks extends AbstractIDComparable implements IUserStocks {
...
...
@ManyToOne(targetEntity = com.mypkg.core.dao.hibernate.persistent.Stock.class,
            cascade = {CascadeType.PERSIST, CascadeType.MERGE}, fetch = FetchType.LAZY)
    @JoinColumn(name = "stock_id", nullable = false)
    public IStock getStock() {
        return stock;
    }
...
}

Code:

@BatchSize(size = 15)
@Entity
@Table(name = "stock")
@org.hibernate.annotations.Entity(dynamicInsert = true, dynamicUpdate = true)
@Proxy(lazy = true, proxyClass = com.mypkg.core.dao.hibernate.persistent.Stock.class)
@javax.persistence.SequenceGenerator(
        name = "SEQ_STORE",
        sequenceName = "stock_sequence"
)
public class Stock extends AbstractIDComparable implements IStock {
...

@OneToMany(targetEntity = com.mypkg.core.dao.hibernate.persistent.OwnedUserStocks.class, mappedBy = "stock",
            cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    public List<IUserStocks> getOwnedStocks() {
        if (null == ownedStocks) {
            ownedStocks = new ArrayList<IUserStocks>();
        }
        return ownedStocks;
    }

    @OneToMany(targetEntity = com.mypkg.core.dao.hibernate.persistent.OwedUserStocks.class, mappedBy = "stock",
            cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    public List<IUserStocks> getOwedStocks() {
        if (null == owedStocks) {
            owedStocks = new ArrayList<IUserStocks>();
        }
        return owedStocks;
    }
}

I use Spring for Hibernate configuration and required classes are in Spring configuration. So hiberante should find all classes. And this configuration was wroking on 3.20.rc2. I've just change hibernate version in pom.xml (maven configuration file) and don't make any other changes.
Is it bug or i should make some changes ?
I look at migration guide and i don't see any issues related to my problem.

emmanuel · **Posted:** Wed Oct 25, 2006 11:50 am

if should really be

Code:

@OneToMany(targetEntity = com.mypkg.core.dao.hibernate.persistent.OwnedUserStocks.class, mappedBy = "stock",
            cascade = CascadeType.ALL, fetch = FetchType.LAZY)

to comply with the definition of the many to one

darkit · **Joined:** Thu Aug 28, 2003 6:30 am **Posts:** 58

emmanuel wrote:

if should really be

Code:

@OneToMany(targetEntity = com.mypkg.core.dao.hibernate.persistent.OwnedUserStocks.class, mappedBy = "stock",
            cascade = CascadeType.ALL, fetch = FetchType.LAZY)

to comply with the definition of the many to one

Sorry, what do you mean
because i've got this mapping in Stock class.

emmanuel · **Posted:** Wed Oct 25, 2006 8:12 pm

Sorry I mean

Code:

@OneToMany(targetEntity = com.mypkg.core.dao.hibernate.persistent.UserStocks.class, mappedBy = "stock",
            cascade = CascadeType.ALL, fetch = FetchType.LAZY)

to comply with the definition of the many to one[/quote]

darkit · **Joined:** Thu Aug 28, 2003 6:30 am **Posts:** 58

emmanuel wrote:

Sorry I mean

Code:

@OneToMany(targetEntity = com.mypkg.core.dao.hibernate.persistent.UserStocks.class, mappedBy = "stock",
            cascade = CascadeType.ALL, fetch = FetchType.LAZY)

to comply with the definition of the many to one

[/quote]

Why do i need this ?
I have abstract class UserStocks and 2 classes which extends it (OwnedStocks and OwedStocks).
In UserStocks i have mapping:

Code:

@ManyToOne(targetEntity = com.mypkg.core.dao.hibernate.persistent.Stock.class, 
            cascade = {CascadeType.PERSIST, CascadeType.MERGE}, fetch = FetchType.LAZY) 
    @JoinColumn(name = "stock_id", nullable = false) 
    public IStock getStock() { 
        return stock; 
    }

And in Stock class i don't need collection of abstract UserStocks. I need 2 collections of concrete classes (OwnedStcoks and OwedStocks).
That's why i created in Stock such mappings:

Code:

@OneToMany(targetEntity = com.mypkg.core.dao.hibernate.persistent.OwnedUserStocks.class, mappedBy = "stock", 
            cascade = CascadeType.ALL, fetch = FetchType.LAZY) 
    public List<IUserStocks> getOwnedStocks() { 
        return ownedStocks; 
    } 

    @OneToMany(targetEntity = com.mypkg.core.dao.hibernate.persistent.OwedUserStocks.class, mappedBy = "stock", 
            cascade = CascadeType.ALL, fetch = FetchType.LAZY) 
    public List<IUserStocks> getOwedStocks() { 
        return owedStocks; 
    }

I don't need 3d collection which returns all objects of UserStocks.

emmanuel · **Posted:** Tue Nov 07, 2006 5:30 pm

because conceptually this is not a bidirectional association if one side contains only a subtype of the other side.

darkit · **Joined:** Thu Aug 28, 2003 6:30 am **Posts:** 58

emmanuel wrote:

because conceptually this is not a bidirectional association if one side contains only a subtype of the other side.

I really don't understand where is there an conceptual error.
I have abstract A class which has association to B class, A1 and A2 are its children. And class B has 2 collections of A1 and A2. It's a normal bidirection association.
Could you explain ?

emmanuel · **Posted:** Tue Nov 07, 2006 8:22 pm

stock points to a collection of OwnedUserStock
to the opposite side can only be of type OwnedUserStock, otherwise I could persist a Stock object (not a OwnedUserStock) into the manytoone association

Later on the oneToMany would contain a Stock object which is illegal because declared as a collection of OwnedUserStock

darkit · **Joined:** Thu Aug 28, 2003 6:30 am **Posts:** 58

emmanuel wrote:

stock points to a collection of OwnedUserStock
to the opposite side can only be of type OwnedUserStock, otherwise I could persist a Stock object (not a OwnedUserStock) into the manytoone association

Later on the oneToMany would contain a Stock object which is illegal because declared as a collection of OwnedUserStock

Brrrr....
I have abstract UserStock, and its children Owned and Owed
and i have Stock class.
Stock class has 2 collection for Owned, Owed
So i can't store Stock to its collections only Owned or Owed.
Stock class doesn't implement IUserStocks interface.
Only UserStock implements IUserStocks interface.

I just want to implement such logic:
C class contains 2 collection of A subclasses (A1 and A2) and A class has reference to C class.
How can i do this ?

emmanuel · **Posted:** Wed Nov 08, 2006 5:55 pm

darkit wrote:

C class contains 2 collection of A subclasses (A1 and A2) and A class has reference to C class.
How can i do this ?

As I said this is not possible. the A -> C is not the bidirectional version of C -> A1
they do not point to the same concrete class.

benoit.heinrich · **Joined:** Mon Nov 26, 2007 12:49 pm **Posts:** 7

emmanuel wrote:

As I said this is not possible. the A -> C is not the bidirectional version of C -> A1
they do not point to the same concrete class.

So do you think it could be fixed by doing this?

Code:

    @OneToMany(targetEntity = OwnedUserStocks.class, mappedBy = "stock",
            cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    public List<OwnedUserStocks> getOwnedStocks() {
        return ownedStocks;
    }

    @OneToMany(targetEntity = OwedUserStocks.class, mappedBy = "stock",
            cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    public List<OwedUserStocks> getOwedStocks() {
        return owedStocks;
    }