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+str Add concatAllLazy stream operator (#31299)

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kerr 2022-09-01 21:07:31 +08:00 • committed by GitHub
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12 changed files with 325 additions and 6 deletions
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19
akka-docs/src/test/java/jdocs/stream/operators/SourceOrFlow.java
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@ -22,6 +22,7 @@ import akka.japi.function.Function2;
// #prependLazy
// #concat
// #concatLazy
// #concatAllLazy
// #interleave
// #interleaveAll
// #merge
@ -38,6 +39,7 @@ import java.util.*;
// #interleaveAll
// #concat
// #concatLazy
// #concatAllLazy
// #prepend
// #prependLazy
// #or-else
@ -54,6 +56,7 @@ import akka.stream.Attributes;
import java.time.Duration;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionStage;
import java.util.stream.Collectors;
class SourceOrFlow {
private static ActorSystem system = null;
@ -149,13 +152,25 @@ class SourceOrFlow {
}
void concatLazyExample() {
// #concat
// #concatLazy
Source<Integer, NotUsed> sourceA = Source.from(Arrays.asList(1, 2, 3, 4));
Source<Integer, NotUsed> sourceB = Source.from(Arrays.asList(10, 20, 30, 40));
sourceA.concatLazy(sourceB).runForeach(System.out::println, system);
// prints 1, 2, 3, 4, 10, 20, 30, 40
// #concat
// #concatLazy
}
void concatAllLazyExample() {
// #concatAllLazy
Source<Integer, NotUsed> sourceA = Source.from(Arrays.asList(1, 2, 3));
Source<Integer, NotUsed> sourceB = Source.from(Arrays.asList(4, 5, 6));
Source<Integer, NotUsed> sourceC = Source.from(Arrays.asList(7, 8 , 9));
sourceA.concatAllLazy(sourceB, sourceC)
.fold(new StringJoiner(","), (joiner, input) -> joiner.add(String.valueOf(input)))
.runForeach(System.out::println, system);
//prints 1,2,3,4,5,6,7,8,9
// #concatAllLazy
}
void interleaveExample() {