DATACMNS-1384 - Support for j.u.Date and j.s.Timestamp in AnnotationRevisionMetadata.

We now properly convert legacy Date instances into Instants to expose the revision date. Support for Timestamp is transparent as it extends Date.

src/main/java/org/springframework/data/history/AnnotationRevisionMetadata.java

@@ -19,6 +19,7 @@ import java.lang.annotation.Annotation;
 import java.time.Instant;
 import java.time.LocalDateTime;
 import java.time.ZoneOffset;
+import java.util.Date;
 import java.util.Optional;
 
 import org.springframework.data.util.AnnotationDetectionFieldCallback;
@@ -128,6 +129,10 @@ public class AnnotationRevisionMetadata<N extends Number & Comparable<N>> implem
 			return Instant.ofEpochMilli((Long) timestamp);
 		}
 
+		if (Date.class.isInstance(timestamp)) {
+			return Date.class.cast(timestamp).toInstant();
+		}
+
 		throw new IllegalArgumentException(String.format("Can't convert %s to Instant!", timestamp));
 	}
 }