Re: [infinispan-dev] Design change in Infinispan Query

On 05 Mar 2014, at 18:16, Mircea Markus <mmarkus(a)redhat.com&gt; wrote: > If anything, this model reduces type safety and reusability. E.g. say you want a M/R task to see how many Persons speak French. With the single cache model(both Dog and Person int he Cache<String, Mammal>) it would look something like: > > a) > //pseudocode > map (String k, Mammal value) { > if (value instanceof Person)) { //this is the ugly part > if (((Person)value).speaks("French")) ... > } else { > //ignore it, it's an Dog > } > } > > Same thing written for a Cache<String, Person>: > > b) > map (String k, Person value) { > if (value.speaks("French")) ... > } > > I don't think people would prefer writing a) instead of b) ;) It’s a pity that having discussed in Mallorca and having referenced a fair few times already, you could not think of an option based on what Paul suggsted in https://issues.jboss.org/browse/ISPN-3640