RxJava2 中的条件过滤器

Question

I have a method with a signature

void supplyData(String query, Integer skip, Integer count)

Typically I would model the method body like this:

MyProvider.observable(query)
 .skip(skip)
  .take(count)
  .subscribe();

Now the two Integers could be null, so I don't need to skip and take all. How can I make these two steps optional?

Answer 1

null check should work here,

MyProvider.observable(query)
 .skip(skip == null? 0: skip)
 .take(count == null? Integer.MAX_VALUE: count)
 .subscribe();