Bug: The above exception thrown when using hibernate.
Reason: This usually occurs when column name is not mentioned in many-to-many node.
The correct mapping for a many to many relation is –
<bag name="projects".... table="users_projects" >
<key column="userId"/>
<many-to-many column="projectId" class="Project" />
</bag>Solution: The mapped columns should be provided in the key and many-to-many nodes as above.
Sreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about technology, philosophy, society and a bit about physics.
He now runs a conversational AI company – DheeYantra – focusing his efforts to help businesses improve operational efficiency using digital employees powered by AI.