Java iterate List<? extends Flux>

userit1985 :

My method gets Flux. How do I iterate over Flux? I would like to go over its objects and do operation on every Child.

public void write(List<? extends Flux<Child>> childFlux) throws Exception {

    childFlux.stream()
            .map(children -> children.collectList())
            .forEach(child -> run(child); //not compile

} 

 public void run(Child child) {
      //TO DO
 }

JEY :

This seems like an anti-pattern. However there are some basic mistakes.

1. map(children -> children.collectList()) will return a Mono<List<Child>>
2. forEach(child -> run(child); you forgot one closing bracket and should be forEach(child -> run(child));.
3. But it won't compile because child will be a Mono<List<Child>> and not a Child
4. When you are using reactive programing nothing happend before subscribe

What you realy need to do is something like

Flux.concat(childFlux).subscribe(this::run)

Concatenate all sources provided in an Iterable, forwarding elements emitted by the sources downstream.

Or

Flux.merge(childFlux).subscribe(this::run)

Merge data from Publisher sequences contained in an array / vararg into an interleaved merged sequence. Unlike concat, sources are subscribed to eagerly.

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