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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2018/12/11 09:44:49 UTC

[GitHub] StefanRRichter commented on a change in pull request #7273: [FLINK-11122][core] Change signature of WrappingProxyUtil#stripProxy(T)

StefanRRichter commented on a change in pull request #7273: [FLINK-11122][core] Change signature of WrappingProxyUtil#stripProxy(T)
URL: https://github.com/apache/flink/pull/7273#discussion_r240536853
 
 

 ##########
 File path: flink-core/src/main/java/org/apache/flink/util/WrappingProxyUtil.java
 ##########
 @@ -31,15 +33,19 @@ private WrappingProxyUtil() {
 	}
 
 	@SuppressWarnings("unchecked")
-	public static <T> T stripProxy(T object) {
+	public static <T> T stripProxy(@Nullable final WrappingProxy<T> wrappingProxy) {
+		if (wrappingProxy == null) {
+			return null;
+		}
 
-		T previous = null;
+		WrappingProxy<T> previous = null;
+		Object delegate = wrappingProxy.getWrappedDelegate();
 
-		while (object instanceof WrappingProxy && previous != object) {
-			previous = object;
-			object = ((WrappingProxy<T>) object).getWrappedDelegate();
+		while (delegate instanceof WrappingProxy && previous != delegate) {
 
 Review comment:
   Otherwise you can generate an endless-loop. See FLINK-7524.

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