Hibernate PersistentList and ArrayList

Question

Dear All, I have a problem with an ArrayList annotated with @ElementCollection.

I need it to be an ArrayList, and when Hibernate load the object from the session, it is a hibernate Persistent List.

How can I solve the issue? I am using Hibernate with hibernate annotations, no JPA, so I can't do any @PostLoad

Best Regards

by the way, @ElementCollection is a JPA annotation ;)

Bozho
– Bozho

2011-04-12 18:55:59 +00:00
Commented Apr 12, 2011 at 18:55 — Bozho
– Bozho, Commented Apr 12, 2011 at 18:55

Bozho · Accepted Answer · 2015-10-13 15:16:51Z

9

Use a List instead of ArrayList:

@ElementCollection(..)
private List elements;

If you then want to do something with an ArrayList specifically, you can create a copy:

ArrayList list = new ArrayList(elements);

You need to use interfaces, because ORMs use custom implementations of these interfaces to achieve orm-specific functionality, e.g. lazy loading. Hibernate doesn't have a specific subclass of ArrayList, it has a PersistentList, which is justa List.

edited Oct 13, 2015 at 15:16

answered Apr 12, 2011 at 18:29

Bozho

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2 Comments

Bozho Over a year ago

depends on what "complex" means

zygimantus Over a year ago

Is there an alternative for XML configuration?

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