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Persisting linked-list using Hibernate

Raghvendra Singh
Greenhorn

Joined: Jan 23, 2011
Posts: 1
Check the object model attached. Parent has reference to firstSeqChild and then onward the seqChild object keeps the reference to next seqChild, hence creating a linked list.

Problem:
Hibernate saveOrUpdate fails with StackOverflow exception if the parent has approx 300 transient seqChildren (due to cascade save effect).
Is there anyway to bypass this problem? I am expecting this seqChildren list to be in thousands in actual implementation.

Another obvious thought I had was to convert the parent seqChild relationship to a "one to many" and use sorted set based on a new index column. but that does not server the purpose becuase an object can be inserted in between the chain (linked list). "it is mandatory for every seqChild to know its preceeding and follwoing seqChild". Design changes, that does not contradict this rule are also welcome.

Relevant code ..

Parent.java


SeqChild.java

Parent.hbm.xml

SeqChild.hbm.xml

Please ask for any additional information required .. Thanks for your help ..



[Thumbnail for Model.jpg]

 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Persisting linked-list using Hibernate
 
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