ModelMapper code refactor using java generic

Author: manirDev

src/main/java/com/manir/springbootecommercerestapi/service/Impl/FaqServiceImpl.java

@@ -6,6 +6,7 @@
 import com.manir.springbootecommercerestapi.repository.FaqRepository;
 import com.manir.springbootecommercerestapi.service.CommonService;
 import com.manir.springbootecommercerestapi.service.FaqService;
+import com.manir.springbootecommercerestapi.service.MapperService;
 import lombok.AllArgsConstructor;
 import org.modelmapper.ModelMapper;
 import org.springframework.stereotype.Service;
@@ -21,15 +22,15 @@ public class FaqServiceImpl implements FaqService {
     private final FaqRepository faqRepository;
     @Resource(name = "modelMapper")
     private final ModelMapper modelMapper;
-    @Resource(name = "commonService")
-    private final CommonService commonService;
+    @Resource(name = "mapperService")
+    private final MapperService<Faq, FaqDto> mapperService;
 
     @Override
     public FaqDto addFaq(FaqDto faqDto) {
-        Faq faq = mapToEntity(faqDto);
+        Faq faq = mapperService.mapToEntity(faqDto);
         Faq addedFaq = faqRepository.save(faq);
 
-        return mapToDto(addedFaq);
+        return mapperService.mapToDto(addedFaq);
     }
 
     @Override

src/main/java/com/manir/springbootecommercerestapi/service/MapperService.java

@@ -0,0 +1,9 @@
+package com.manir.springbootecommercerestapi.service;
+
+public interface MapperService<E, D>{
+    //entity mapper
+    E mapToEntity(D type);
+
+    //dto mapper
+    D mapToDto(E type);
+}

src/main/java/com/manir/springbootecommercerestapi/service/MapperServiceImpl.java

@@ -0,0 +1,36 @@
+package com.manir.springbootecommercerestapi.service;
+
+import lombok.AllArgsConstructor;
+import org.modelmapper.ModelMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+
+@AllArgsConstructor
+@Service
+@Component("mapperService")
+public class MapperServiceImpl<E, D> implements MapperService<E, D> {
+
+
+    @Resource(name = "modelMapper")
+    private final ModelMapper modelMapper;
+    @Resource
+    private final Class<E> entityClass;
+    @Resource
+    private final Class<D> dtoClass;
+
+
+    @Override
+    public E mapToEntity(D type) {
+        E model = modelMapper.map(type, entityClass);
+        return model;
+    }
+
+    @Override
+    public D mapToDto(E type) {
+        D dto = modelMapper.map(type, dtoClass);
+        return dto;
+    }
+}