New posts for Spring and Hibernate

mapstruct/src/broken/cannot-map/BrokenMapper.java

@@ -0,0 +1,18 @@
+import org.mapstruct.Mapper;
+
+/** MapStruct can map String to String and Tag to Tag-like beans, but not a Tag to a String. */
+@Mapper
+public interface BrokenMapper {
+
+    class Tag {
+        private final String label;
+        public Tag(String label) { this.label = label; }
+        public String getLabel() { return label; }
+    }
+
+    record Src(Tag tag) { }
+
+    record Dst(java.time.LocalDate tag) { }
+
+    Dst map(Src src);
+}