获取持久实体时不获取byte []列的最佳方法是什么？

Question

The table has multiple properties which we want to always be fetched. But it also has one property which is very large. When getting the information to display a list of items to the user the request will be significantly slower if the large property is fetched and it's not even used.

So far I've only managed to make it work by wrapping that byte[] in a separate Object and referencing it with a @ManyToOne(fetch = FetchType.LAZY) which seems like poor design. @Lob @Basic and @OneToOne don't seem to work and I would rather not have that property in a separate Object anyway.

Answer 1

It sounds like you have tried annotating the byte[] array with @Basic(fetch = FetchType.LAZY) . When using the @Basic annotation and lazy fetching additional hibernate options must be set. See the Hibernate Documentation - Performing Enhancement Section

Specifically, the hibernate.enhancer.enableLazyInitialization property must be set to true. By default it is not enabled.