| Re: [eclipselink-users] cardinality does not correspond |
You need to change your @OneToOne to @ManyToOne.
otismo wrote:
>
> How should I map the following relationship? I have an owning object
> which contains a map of target objects. I want the Target object to
> maintain a reference to the Owner.
>
> class Owner {
> @OneToMany(cascade = CascadeType.ALL)
> @MapKey(name = "date")
> private Map<Date, Target> targets= new TreeMap<Date, Target>();
> }
>
> class Target {
> @OneToOne(mappedBy = "targets")
> private Owner owner;
> }
>
> Understandably, the above results in the following error: An incompatible
> mapping has been encountered between [Target] and [Owner]. This usually
> occurs when the cardinality of a mapping does not correspond with the
> cardinality of its backpointer.
>
> Any tips?
>
> Thanks,
> Peter
>
>
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http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland
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