A. Not getting how to do this using annotations -

Eg.
class Param {
Constant cons;
}

class Constant { // no reference to Param
}

Requirement - Table generated should be,

1. Param_Table {param_id}

2. Constant_Table {const_id, param_id}

B. Sub classing and constraint creation -
Eg.
class Param {
}

class ConstantParam extends Param {
// Mapping to const_id in Constant_Table
Constant cons;
}

class OtherParam extends Param {
// NOT Mapping to other_id in Other_Table
Integer other;
}

class Constant {}

Param_Table {param_id, value_id} value_id points to const_id or other_id

Constant_Table {const_id}

Other_Table {other_id}

Currently, it create FK constraint on "value_id" of PARAM --> "const_id" of CONSTANT
I dont want any constraint to be created on "value_id" as it can store "other_id" also.


Thanks in advance,
Arpit

Is there any solution to avoid constraint creation in case of one-to-one mapping using Hibernate annotation ?

Any help will be highly appreciated !!

Thanks!!