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[eclipselink-users] Newbie mapping question

Hi to everybody.
My project works on two entities with a "one to many" relation.
A entity defines a collection of B elements as described here : 

@OneToMany(cascade = CascadeType.ALL, mappedBy = Bkeyname, fetch =
FetchType.EAGER)
private Collection bcollection;

And B relates to A like this:

@JoinColumn(name = Bkeyname, referencedColumnName = Akeyname)
@ManyToOne
private A relateda;

Fetch = FetchType.EAGER should grant me that every "find" operation
on A should retrieve every B entity related to A, am i wrong?
This is not happening in my project! I always see null values on B
collection, 
what am i doing wrong?
Thanks in advance
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