How to use “size” as a field name in a hibernate/jpa entity?

Question

I have two JPA entities : VirtualLot and VirtualFiles. VirtualFiles extends VirtualInode. There is a ManyToMany relation betw

Answer 1

size is a reserved keyword like default or for in Java. Therefore either change your name for your variable in perhabs nodeSize or use the @Column(name = "nodeSize") Annotation with the name attribute to give a basic column a special name.

Answer 2

I'm not sure about this solution, but have a try:

Just change your @Query using the following:

@Query(value = "select sum(f.size) from VirtualLot l join l.files f where l.id = ?1", nativeQuery = true)

The nativeQuery parameter is supposed to change your query into a Oracle native query.

See this stackoverflow topic and the links provided there as reference.

Hope this will fix your problem.