org.hibernate.loader.MultipleBagFetchException: cannot simultaneously fetch multiple bags

Question

Following is my code Here I am using multiple lists to fetch data from database. On fetching data from hql query it is showing exception.

Pojo Class

Answer 1

I find using @PostLoad annotated method in the entity most useful, I'd do something like

@PostLoad
public void loadCollections(){
     int s1 = productReplacements.size();
     int s2 = billProductList.size();
}

this way I'm able to fine control the eager loading and initialization of collections in the same transaction that loaded the entity.