From fcfe975423a8d3bf74b2b63be728936b62c81e2e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcin=20Zaj=C4=85czkowski?=
 <148013+szpak@users.noreply.github.com>
Date: Wed, 24 Jul 2024 17:36:47 +0200
Subject: [PATCH] Add @Nullable in RetryContext to easier detect possible NPE

Both getParent() and getLastThrowable() might return null, as mentioned
in javadoc. @Nullable helps an IDE warns developers about potential NPE.
---
 src/main/java/org/springframework/retry/RetryContext.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/java/org/springframework/retry/RetryContext.java b/src/main/java/org/springframework/retry/RetryContext.java
index 0450ec5c..e367a4af 100644
--- a/src/main/java/org/springframework/retry/RetryContext.java
+++ b/src/main/java/org/springframework/retry/RetryContext.java
@@ -17,6 +17,7 @@
 package org.springframework.retry;
 
 import org.springframework.core.AttributeAccessor;
+import org.springframework.lang.Nullable;
 
 /**
  * Low-level access to ongoing retry operation. Normally not needed by clients, but can be
@@ -85,6 +86,7 @@ public interface RetryContext extends AttributeAccessor {
 	 * Accessor for the parent context if retry blocks are nested.
 	 * @return the parent or null if there is none.
 	 */
+	@Nullable
 	RetryContext getParent();
 
 	/**
@@ -100,6 +102,7 @@ public interface RetryContext extends AttributeAccessor {
 	 * if this is the first attempt, but also if the enclosing policy decides not to
 	 * provide it (e.g. because of concerns about memory usage).
 	 */
+	@Nullable
 	Throwable getLastThrowable();
 
 }