rspec/rules/S6976/java/rule.adoc

40 lines
957 B
Plaintext
Raw Normal View History

== Why is this an issue?
Stream operations are divided into intermediate and terminal operations, and are combined to form stream pipelines.
A stream should be operated on (invoking an intermediate or terminal stream operation) only once.
=== Noncompliant code example
[source,java]
----
Stream<Widget> pipeline = widgets.stream().filter(b -> b.getColor() == Color.RED);
var res1 = pipeline.findAny();
var res2 = pipeline.mapToInt(b -> b.getWeight()).sum(); // Noncompliant
----
== Resources
https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html#StreamOps[Stream Operations]
ifdef::env-github,rspecator-view[]
'''
== Implementation Specification
(visible only on this page)
=== Message
Refactor this code so that this consumed stream pipeline is not reused.
=== Highlighting
Primary: Operation invoked on consumed stream
Secondary: The previous terminal operation on that stream
endif::env-github,rspecator-view[]