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httpcore-4.4.5 で削除されたannotation ThreadSafe NotThreadSafeの置換

Last updated at Posted at 2020-08-14

httpcore-4.4.4 では使用可能だが httpcore-4.4.5 から削除されたannotation

@ThreadSafe, @NotThreadSafe に関する置換メモ。

Release Note:
https://archive.apache.org/dist/httpcomponents/httpcore/RELEASE_NOTES-4.4.x.txt

httpcore ThreadSafe class not found solution:
https://dev-aux.com/java/org-apache-http-annotation-threadsafe-class-not-found

置換

@ThreadSafe class not found compilation error occurs after updating your org.apache.httpcomponents:httpcore dependency version to 4.4.11 or above.
@NotThreadSafe

org.apache.http.annotation.Immutable
org.apache.http.annotation.NotThreadSafe
org.apache.http.annotation.ThreadSafe

削除されたこれらの代わりに、org.apache.http.annotation.Contractorg.apache.http.annotation.ThreadingBehavior enum が導入された。

よって @ThreadSafeorg.apache.http.annotation.Contract に置換し、ThreadingBehavior enumの値SAFEを渡せば、スレッドセーフな動作規約を指定できる。

@Contract(threading = org.apache.http.annotation.ThreadingBehavior.SAFE)

等々。

同じく @NotThreadSafe@Contract(threading = org.apache.http.annotation.ThreadingBehavior.UNSAFE)

@ImmutableThreadingBehavior.IMMUTABLE あるいは IMMUTABLE_CONDITIONAL

以下も参考:
https://hc.apache.org/httpcomponents-core-ga/httpcore/clirr-report.html

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