If you declare the field to be an interface type and you don't
initialize the field to anything, I don't remember how we decide what
impl to use.
Looking at the code in ProxyManagerImpl.java, it appears that we
default to ArrayList for fields declared as type Collection, HashSet
for fields declared as type Set, TreeSet for fields declared as type
SortedSet, and ArrayList for fields declared as type List.
On Dec 13, 2006, at 4:47 PM, Patrick Linskey wrote:
-----Original Message-----
From: Dain Sundstrom [mailto:[EMAIL PROTECTED]
Sent: Wednesday, December 13, 2006 2:56 PM
To: open-jpa-dev@incubator.apache.org
Subject: Re: Are relation sets identity, pk or bean.equals() based?
What I'm really asking is when OpenJPA loads a one-to-many field,
what kind of collection is injected into the bean? Is it a
plain old
HashSet? If not, what does the collection use to determine equality
between elements?
It's a dynamically-generated subtype of whatever type that you specify
in the field declaration. So, you need to have a no-args
constructor and
the class can't be final.
If you declare the field to be an interface type and you don't
initialize the field to anything, I don't remember how we decide what
impl to use.
-Patrick
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