Cannot retrieve Map<PersisenceCapable, PersistenceCapable> fields when 
DataCache is on
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                 Key: OPENJPA-1205
                 URL: https://issues.apache.org/jira/browse/OPENJPA-1205
             Project: OpenJPA
          Issue Type: Bug
          Components: datacache
    Affects Versions: 1.2.1
            Reporter: Simon Droscher


Consider the following mapping, which uses a Map of a PC class to another PC 
class:

@OneToMany(targetEntity = CatalogProductPriceImpl.class, cascade = { 
CascadeType.ALL })
@MapKey(name = "catalog")
public Map<Catalog, CatalogPrice> getCatalogPrices() {
  return catalogPrices;
}

With the DataCache on, when a product is retrieved for the first time, this map 
will be correct. However, the next time it is retrieved (i.e. from the cache), 
what is returned is a Map<LongId, CatalogPrice> not the expected Map<Catalog, 
CatalogPrice>.

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