Is it absolutely mandatory for the primary key of a Hibernate model (entity) to be a field rather than a property? I have a table, say 'Purchase', whose primary key, say, cust_id, also acts as a foreign key to a 'Cust' table. Can I define the primary key as a 'Cust' type instead of an int type? What annotations do I need to use? Can someone share a sample code if the above is possible?
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Have a look at the discussion here @ SO.
In discussion it states you can use @Id and @ManyToOne on a forign key mapping.
Is it absolutely mandatory for the primary key of a Hibernate model (entity) to be a field rather than a property?
No its not mandatory, for composite primary keys scenario you can have POJOs as primary key have a look at section on composite primary keys in hibernate docs
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