Add @FunctionalInterface to MessagePostProcessor

Add the @FunctionalInterface annotation to the MessagePostProcessor interfaces in the spring-jms and spring-messaging projects. Closes gh-25571
spring-projects · Aug 10, 2020 · 6a7e58a · 6a7e58a
1 parent e25e690
commit 6a7e58a
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diff --git a/spring-jms/src/main/java/org/springframework/jms/core/MessagePostProcessor.java b/spring-jms/src/main/java/org/springframework/jms/core/MessagePostProcessor.java
@@ -32,6 +32,7 @@
  * @see JmsTemplate#convertAndSend(javax.jms.Destination, Object, MessagePostProcessor)
  * @see org.springframework.jms.support.converter.MessageConverter
  */
+@FunctionalInterface
 public interface MessagePostProcessor {
 
 	/**

diff --git a/spring-messaging/src/main/java/org/springframework/messaging/core/MessagePostProcessor.java b/spring-messaging/src/main/java/org/springframework/messaging/core/MessagePostProcessor.java
@@ -28,6 +28,7 @@
  * @see MessageSendingOperations
  * @see MessageRequestReplyOperations
  */
+@FunctionalInterface
 public interface MessagePostProcessor {
 
 	/**