CODEWITHSUNDEEP
javahibernatejpa
digiarnie
digiarnie

Reputation: 23345

How to deal with a List of Objects after a Hibernate query against a single entity

After calling list() on a Hibernate Query which you expect to just return a list of Foo objects (see example below), how best would you deal with this situation? 

Query query = session.createQuery("from Foo");
List list = query.list();

I don't particularly like seeing this:

public List read() { ... }

When I would much prefer:

public List<Foo> read() { ... }

Would you expect callers of the read method to have cast to Foo for each element? Is there a nice way to get the read method to return List< Foo >?

Upvotes: 3

Views: 489

Answers (1)

Pascal Thivent
Pascal Thivent

Reputation: 570305

Would you expect callers of the read method to have cast to Foo for each element? Is there a nice way to get the read method to return List< Foo >?

No, I wouldn't expect the caller to do the cast, so I'd write things like this:

Query query = session.createQuery("from Foo");
List<Foo> list = query.list();

And if you want to remove the non type-safe cast warning (the Hibernate Query API is not type-safe): 

Query query = session.createQuery("from Foo");
@SuppressWarnings("unchecked")
List<Foo> list = query.list();

Upvotes: 2

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