If I use

@Persistent(serialized = "true")
Multimap<String, Long> map;

I get javax.jdo.JDOUserException: Field "...jdo.MyModel.map" is
declared as a reference type (interface/Object) but no implementation
classes of "com.google.common.collect.Multimap" have been found!

but if I use
@Persistent(serialized = "true")
HashMultimap<String, Long> map;
its working fine.

On Sep 25, 1:20 pm, Dhamu <[email protected]> wrote:
> Thanks Jason...
>
> @Persistent(serialized = "true")  -- this works fine..
>
> - Dhamu.
>
> On Sep 24, 8:02 pm, mcrady <[email protected]> wrote:
>
> > I don't see serializable as an 
> > option:http://db.apache.org/jdo/api23/apidocs/javax/jdo/annotations/Persiste...
>
> > On Sep 23, 11:01 am, "Jason (Google)" <[email protected]> wrote:
>
> > > If you use a non-native datastore type that isn't declared to be
> > > PersistenceCapable, you need to explicitly indicate that it is 
> > > serializable:
> > > @Persistent(serializable = "true")
> > > Multimap map;
>
> > > ...
>
> > > This should work if the class of the object implements Serializable. For
> > > instance, I've been able to store HashMap objects this way.
>
> > > - Jason
>
> > > On Mon, Sep 21, 2009 at 2:26 PM, Dhamu <[email protected]> wrote:
>
> > > > How to use multimap (http://google-collections.googlecode.com/svn/
> > > > trunk/javadoc/com/google/common/collect/Multimap.html) in jdo?
>
> > > > I get the following exception.
> > > > org.datanucleus.exceptions.NucleusUserException: Field
> > > > "...model.jdo.MyModel.content" is declared as a reference type
> > > > (interface/Object) but no implementation classes of
> > > > "com.google.common.collect.Multimap" have been found!
>
> > > > please help!!
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