Win a copy of JDBC Workbook this week in the JDBC and Relational Databases forum
or A Day in Code in the A Day in Code forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
  • Campbell Ritchie
  • Paul Clapham
  • Jeanne Boyarsky
  • Junilu Lacar
  • Henry Wong
  • Ron McLeod
  • Devaka Cooray
  • Tim Cooke
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Frits Walraven
  • Tim Holloway
  • Carey Brown
  • Piet Souris
  • salvin francis
  • fred rosenberger

ManyToMany deletion issue

Ranch Hand
Posts: 240
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

I have an Entity called Audit with a member called Materials which is a collection of Material Entities:

In Material I have:

The table that is created is:

This what I would expect. However the issue I have is I can't delete an Audit without getting a 'Cannot delete or update a parent row: a foreign key constraint fails' exception on this table.

I have been reading through the Annotations reference guide and I am still not sure how to map this so I can delete Audits and have the Materials persist but the material_audit mappings removed. Its actually not even important for me to ever list all the Audits for a material, (I only want to show an Audit and its associated Materials) so I may not need the Audits member in Materials (if that helps at all).

Any tips would be great.

Whoever got anywhere by being normal? Just ask this exceptional tiny ad:
Devious Experiments for a Truly Passive Greenhouse!
    Bookmark Topic Watch Topic
  • New Topic