Merge pull request #41 from SWM-WeLike2Coding/feat/productIdList

feat: 여러 상품 id로 해당 상품 리스트를 조회하는 기능 개발

src/main/java/com/wl2c/elswhereproductservice/domain/product/controller/ProductController.java

@@ -1,6 +1,7 @@
 package com.wl2c.elswhereproductservice.domain.product.controller;
 
 import com.wl2c.elswhereproductservice.domain.product.model.dto.list.SummarizedProductDto;
+import com.wl2c.elswhereproductservice.domain.product.model.dto.request.RequestProductIdListDto;
 import com.wl2c.elswhereproductservice.domain.product.model.dto.request.RequestProductSearchDto;
 import com.wl2c.elswhereproductservice.domain.product.model.dto.response.ResponseMaturityRepaymentEvaluationDateDto;
 import com.wl2c.elswhereproductservice.domain.product.model.dto.response.ResponseNextRepaymentEvaluationDateDto;
@@ -71,6 +72,20 @@ public ResponsePage<SummarizedProductDto> listByEndSale(@RequestParam(name = "ty
         return new ResponsePage<>(result);
     }
 
+    /**
+     * 여러 상품 id로 해당 상품 리스트 조회
+     * <p>
+     *     참고 : user-service와 product-service 통신 간에 사용하고자 만든 API 입니다.
+     * </p>
+     *
+     * @param requestProductIdListDto 조회하고자 하는 상품 id 리스트
+     * @return 상품 리스트
+     */
+    @PostMapping("/list")
+    public List<SummarizedProductDto> listByProductIds(@Valid @RequestBody RequestProductIdListDto requestProductIdListDto) {
+        return productService.listByProductIds(requestProductIdListDto.getProductIdList());
+    }
+
     /**
      * 상품 단건 조회
      * <p>

src/main/java/com/wl2c/elswhereproductservice/domain/product/model/dto/request/RequestProductIdListDto.java

@@ -0,0 +1,20 @@
+package com.wl2c.elswhereproductservice.domain.product.model.dto.request;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+
+import java.util.List;
+
+@Getter
+public class RequestProductIdListDto {
+
+    @Schema(description = "상품 id 리스트", example = "[3, 6, 9, 12]")
+    private final List<Long> productIdList;
+
+    @JsonCreator
+    public RequestProductIdListDto(@JsonProperty("productIdList") List<Long> productIdList) {
+        this.productIdList = productIdList;
+    }
+}

src/main/java/com/wl2c/elswhereproductservice/domain/product/repository/ProductRepository.java

@@ -25,6 +25,11 @@ public interface ProductRepository extends JpaRepository<Product, Long> {
             "order by case when :sortType = 'knock-in' and p.knockIn is null then 1 else 0 end ")
     Page<Product> listByEndSale(@Param("sortType") String sortType, Pageable pageable);
 
+    @Query("select p from Product p " +
+            "where p.productState = 'ACTIVE' " +
+            "and p.id in :productIdList ")
+    List<Product> listByIds(@Param("productIdList") List<Long> productIdList);
+
     @Query("select p from Product p where p.productState = 'ACTIVE' and p.id = :id ")
     Optional<Product> findOne(@Param("id") Long id);
 

src/main/java/com/wl2c/elswhereproductservice/domain/product/service/ProductService.java

@@ -71,6 +71,13 @@ public Page<SummarizedProductDto> listByEndSale(String type, Pageable pageable)
         return products.map(SummarizedProductDto::new);
     }
 
+    public List<SummarizedProductDto> listByProductIds(List<Long> productIdList) {
+        List<Product> productList = productRepository.listByIds(productIdList);
+
+        return productList.stream()
+                .map(SummarizedProductDto::new)
+                .collect(Collectors.toList());
+    }
 
     public ResponseSingleProductDto findOne(Long id) {
         Product product = productRepository.findOne(id).orElseThrow(ProductNotFoundException::new);