Have JPA/Hibernate to replicate the “ON DELETE SET NULL” functionality

Question

I\'ve been able to have JPA/Hibernate to replicate the ON DELETE CASCADE functionality successfully (seems like the default behaviour) but I\'m now trying to re

Answer 1

I think that the best solution is a user SQL statement for setting on delete action as follow:

CREATE TABLE table_name
(
  column1 datatype null/not null,
  column2 datatype null/not null,
  ...

  CONSTRAINT fk_column
     FOREIGN KEY (column1, column2, ... column_n)
     REFERENCES parent_table (column1, column2, ... column_n)
     ON DELETE SET NULL
);

when user deletes a row by other cascading delete where you use a table reference to this deleted row, you could not use hibernate solution and return SQL exception.