rx-android

I am using room database to store comments and RxJava as a listener to do some stuff when the database is changed. I want to not call the callback when delete is called on the table, only when insert is called. What i found out so far is that Room library has triggers that are called on delete , insert and update of the table that in turn call RxJava's methods. Is there any way to drop the delete trigger and get callbacks only for the insert and update methods? Here is my CommentDAO: @Query("SELECT * FROM comments" ) fun getAll(): Flowable<List<Comment>> @Insert(onConflict = OnConflictStrategy

I'm RxJava newbie, and I've got following problem. Say I have sequence of items and on of items propagates error, I want to ignore it and to continue processing other items. I have following snippet: Observable.from(Arrays.asList("1", "2", "3")) .map(x -> { if (x.equals("2")) { throw new NullPointerException(); } return x + "-"; }) .onExceptionResumeNext(Observable.empty()) .subscribe(System.out::println); I'm getting: 1- But I want to get: 1- , 3- How can I do that? the trick is to wrap the value, which would be transformed somehow, into a new observable and flatmap over it as in the