Created
September 12, 2015 21:31
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| package org.davidwatkins73.rx.playpen; | |
| import rx.Observable; | |
| import java.util.ArrayList; | |
| import java.util.List; | |
| public class RxBatchDemo { | |
| public static void main(String[] args) { | |
| List<Integer> batch = new ArrayList<>(); | |
| Observable.range(0, 1000) | |
| .map(x -> { | |
| batch.add(x); | |
| return 1; | |
| }) | |
| .scan(1, (acc, x) -> acc + 1) | |
| .filter(x -> x % 300 == 0) | |
| .subscribe( | |
| x -> { | |
| System.out.println("commit " + x + " == " + batch); | |
| batch.clear(); | |
| }, | |
| e -> System.err.println(e.getMessage()), | |
| () -> System.out.println("Done") | |
| ); | |
| Observable.range(0, 10) | |
| .map(x -> 1) | |
| .scan((acc, x) -> acc + x) | |
| .map(x -> x / 3) | |
| .distinct() | |
| .subscribe(System.out::println); | |
| } | |
| public static void withSize() { | |
| List<Integer> batch = new ArrayList<>(); | |
| Observable.range(0, 10) | |
| .map(x -> { | |
| batch.add(x); | |
| System.out.println("batch now: "+batch.size()); | |
| return batch.size(); | |
| }) | |
| .filter(x -> x >= 3) | |
| .subscribe( | |
| x -> { | |
| System.out.println("commit " + x + " == " + batch); | |
| batch.clear(); | |
| }, | |
| e -> System.err.println(e.getMessage()), | |
| () -> System.out.println("Done") | |
| ); | |
| } | |
| } |
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Playing with ideas for driving jdbc batch via rx.