Super slow comparing RealmResults

I got some list of object from database:

newSubscribedEpisodes = realm.where(Episode.class).equalTo("isNew", true).sort("publishedDate", Sort.DESCENDING).findAll();

There is about 1100 results.

I check if those results are in the other list (about 1000 elements):

       for (Episode episode : newSubscribedEpisodes) {
            KLog.d(podcast + " " +episode + " pol");
            KLog.w(episodes.contains(episode) + " pol");
        }

And it takes about 10 seconds. But when I do a copy of the realm results list it takes 0,5s.

       realm.copyFromRealm(newSubscribedEpisodes)

It could be a walkaround but for bigger lists I get OOM for copyFromRealm().

[nhachicha]

can’t you extract only the episodes ids from RSS then use not in to discriminate episodes in Realm which are not from the RSS feed, this way you don’t have to copyFromRealm or iterate the RealmResults to do the comparison outside

Something like

String[] listOfRSSEpisodeIds = new String[]{"1", "7"};
realm.where(Episode.class)
                           .not()
                           .in("id", listOfRSSEpisodeIds)
                           .findAllAsync();

[cmelchior]

Above solution seems to have worked. Closing