gaspersic/java-design-patterns
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Java 11 migration: patterns starting with a (#1084)

Browse Source 
* Moves abstract-factory pattern to java 11

* Moves abstract-document pattern to java 11

* Moves acyclic-visitor pattern to java 11

* Moves adapter pattern to java 11

* Moves aggregator-microservices pattern to java 11

* Moves api-gateway pattern to java 11
This commit is contained in:
Anurag Agarwal
2019-11-13 21:34:51 +05:30
committed by Ilkka Seppälä
parent 3c57bf7078
commit f04fc3c0dc
26 changed files with 151 additions and 172 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
abstract-document/src/main/java/com/iluwatar/abstractdocument/AbstractDocument.java
View File

@ -23,10 +23,10 @@
package com.iluwatar.abstractdocument;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.function.Function;
import java.util.stream.Stream;
@ -55,9 +55,13 @@ public abstract class AbstractDocument implements Document {
@Override
public <T> Stream<T> children(String key, Function<Map<String, Object>, T> constructor) {
Optional<List<Map<String, Object>>> any = Stream.of(get(key)).filter(Objects::nonNull)
.map(el -> (List<Map<String, Object>>) el).findAny();
return any.map(maps -> maps.stream().map(constructor)).orElseGet(Stream::empty);
return Stream.ofNullable(get(key))
.filter(Objects::nonNull)
.map(el -> (List<Map<String, Object>>) el)
.findAny()
.stream()
.flatMap(Collection::stream)
.map(constructor);
}
@Override