google app engine - How to bypass JPA level2 cache for query and find -

i'm using jpa2 level2 cache enabled (jcache/memcache) on gae. have run update transactions , them rely on datastore data , not cached one. tried set javax.persistence.cache.retrievemode property "bypass" when using jpa find method doesn't seem work @ all. wonder if cache bypass possible datanucleus jpa2 ?

code sample :

if (bypasscache) {         return find(classname, collections.collections.<string,object>singletonmap("javax.persistence.cache.retrievemode",cacheretrievemode.bypass));     }     else return find(classname); 

i'm using datanucleus 3.1.3 , appengine 1.7.7.1.

thanks !

after reading source code of datanucleus understand jpa cache bypass not implemented find methods. confirm ?

in fact seems entitymanager.find() methods l2 cached whatever properties set. did jpql query , query result isn't l2 cached. (datanucleus.query.results.cached false default). understanding should use queries fine control of l2 cache.