database - Diamond model and JPA : How can I store or read it? -

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i know if it's possible use cascade mode jpa store database diamond model. diamond model :

  /    \

left right

\    /   down
  • up contains 2 lists : 1 of right et 1 of left
  • right , left contain list of down.

for database, have : - uptable : id, name; - righttable : id, name, id_up; - lefttable : id, name, id_up; - downtable : id, name, id_left, id_right;

i thought @onetomany(mappedby = "xxxx", cascade=cascadetype.all) , @manytoone have worked no... i've dreamed.

so, have solution?

thanks.


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