I have a problem. I\'m learning JPA. I\'m using embedded OpenEJB container in unit tests, but only working is @OneToMany(fetch=EAGER). Otherwise is the collection allways null. I haven\'t found, how t
I have 3 tables: Order, OrderStates, OrderStateDefinition An Order has many OrderStates which then has one OrderStateDefinition.
I have this classes who is mapped using Entity Framework Code First: public class Person { public int PersonId { get; set; }
i wanted to create a topic model. this model would have a foreign key, non required, to 开发者_C百科the topic above it
Imagine I have two models Film -name -description -duration -year_made -rating -actors Actor -name -d_o_b -biography
I normally have everything set to cascade all by using a convention, like so: public class CascadeAllConvention : IHasOneConvention, IHasManyConvention, IReferenceConvention
I am quite new at SQL statements and I have never been very good at joins etc. I am having a problem working out how to do the following:
The below annotation works when applying it to the field: @OneToMany(targetEntity=TestMany.class, cascade=CascadeType.ALL, fetch=FetchType.EAGER)
I am new to Hibernate. I notice that in Hibernate, mapping the java classes into database tables often involve relation tables, even sometimes relation tables are not necessary(Like in a one-to-many r
i\'m building a Q&A site and my questions, answers and comments are on the same posts table. But their postType is different. I can get answers for a question and comments for an answer with this
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