Generate question bank domain model from JDL

src/main/java/com/example/questionbank/service/mapper/EntityMapper.java

@@ -0,0 +1,28 @@
+package com.example.questionbank.service.mapper;
+
+import java.util.List;
+import org.mapstruct.BeanMapping;
+import org.mapstruct.MappingTarget;
+import org.mapstruct.Named;
+import org.mapstruct.NullValuePropertyMappingStrategy;
+
+/**
+ * Contract for a generic dto to entity mapper.
+ *
+ * @param <D> - DTO type parameter.
+ * @param <E> - Entity type parameter.
+ */
+
+public interface EntityMapper<D, E> {
+    E toEntity(D dto);
+
+    D toDto(E entity);
+
+    List<E> toEntity(List<D> dtoList);
+
+    List<D> toDto(List<E> entityList);
+
+    @Named("partialUpdate")
+    @BeanMapping(nullValuePropertyMappingStrategy = NullValuePropertyMappingStrategy.IGNORE)
+    void partialUpdate(@MappingTarget E entity, D dto);
+}