Well, I think a proxy is pretty simple. I don't write them for every entity
and don't see a need for it. Here's my simple interface.
public interface ServiceProxy
{
void insert( Serializable transientInstance );
void remove( Serializable persistentInstance );
T update( T detachedInstance );
T findById( Class transientInstance, Serializable id );
List findByNamedQuery( String queryName, Map<String, Serializable>
queryParams );
List findAll( Class transientInstance );
}
Works great for me. I only expose what is required by the client. This covers
almost all the cases. For other cases, I add a service method to the proxy.
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