Hibernate Map Mapping Problem

Hi I am trying to Persist a Map in Hibernate as开发者_运维百科 follows:

public class Product{
    @OneToMany
    @MapKey(name="id")
 private Map<Company,ProductCompany> productCompanies=new HashMap<Company,ProductCompany>();

}

public class Company{
 private int id;
}
public class ProductCompany(){
 @ManyToOne
 private Product product;
 @ManyToOne
 private Company company;
}

Any idea what the correct annotation would be for doing this mapping? At the moment it stores the keyset as ints...not as Company objects.

Thxs.

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Try using company as your MapKey:

public class Product{
@OneToMany
@MapKey(name="company")
private Map<Company,ProductCompany> productCompanies=new HashMap<Company,ProductCompany>();
}

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Try to build your project , before executing commands