jpashop : search (dynamic query)

jpashop/src/main/java/com/example/jpashop/repository/OrderRepository.java

@@ -1,10 +1,15 @@
 package com.example.jpashop.repository;
 
+import com.example.jpashop.domain.Member;
 import com.example.jpashop.domain.Order;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Repository;
+import org.springframework.util.StringUtils;
 
 import javax.persistence.EntityManager;
+import javax.persistence.TypedQuery;
+import javax.persistence.criteria.*;
+import java.util.ArrayList;
 import java.util.List;
 
 @Repository
@@ -21,5 +26,73 @@ public class OrderRepository {
         return em.find(Order.class, id);
     }
 
-//    public List<Order> findAll(OrderSearch orderSearch) {}
+    public List<Order> findAllByString(OrderSearch orderSearch) {
+        //language=JPAQL
+        String jpql = "select o From Order o join o.member m";
+        boolean isFirstCondition = true;
+        //주문 상태 검색
+        if (orderSearch.getOrderStatus() != null) {
+            if (isFirstCondition) {
+                jpql += " where";
+                isFirstCondition = false;
+            } else {
+                jpql += " and";
+            }
+            jpql += " o.status = :status";
+        }
+        //회원 이름 검색
+        if (StringUtils.hasText(orderSearch.getMemberName())) {
+            if (isFirstCondition) {
+                jpql += " where";
+                isFirstCondition = false;
+            } else {
+                jpql += " and";
+            }
+            jpql += " m.name like :name";
+        }
+        TypedQuery<Order> query = em.createQuery(jpql, Order.class)
+                .setMaxResults(1000); //최대 1000건
+        if (orderSearch.getOrderStatus() != null) {
+            query = query.setParameter("status", orderSearch.getOrderStatus());
+        }
+        if (StringUtils.hasText(orderSearch.getMemberName())) {
+            query = query.setParameter("name", orderSearch.getMemberName());
+        }
+        return query.getResultList();
+    }
+
+    public List<Order> findAllByCriteria(OrderSearch orderSearch) {
+        CriteriaBuilder cb = em.getCriteriaBuilder();
+        CriteriaQuery<Order> cq = cb.createQuery(Order.class);
+        Root<Order> o = cq.from(Order.class);
+        Join<Order, Member> m = o.join("member", JoinType.INNER); //회원과 조인
+        List<Predicate> criteria = new ArrayList<>();
+        //주문 상태 검색
+        if (orderSearch.getOrderStatus() != null) {
+            Predicate status = cb.equal(o.get("status"),
+                    orderSearch.getOrderStatus());
+            criteria.add(status);
+        }
+        //회원 이름 검색
+        if (StringUtils.hasText(orderSearch.getMemberName())) {
+            Predicate name =
+                    cb.like(m.<String>get("name"), "%" +
+                            orderSearch.getMemberName() + "%");
+            criteria.add(name);
+        }
+        cq.where(cb.and(criteria.toArray(new Predicate[criteria.size()])));
+        TypedQuery<Order> query = em.createQuery(cq).setMaxResults(1000); //최대 1000건
+        return query.getResultList();
+    }
+
+    public List<Order> findAll(OrderSearch orderSearch) {
+
+        return em.createQuery("select o from Order o join o.member m" +
+                " where o.status = :status" +
+                " and m.name like :name", Order.class)
+                .setParameter("status", orderSearch.getOrderStatus())
+                .setParameter("name", orderSearch.getMemberName())
+                .setMaxResults(1000) // 최대 1000건건
+               .getResultList();
+    }
 }

jpashop/src/main/java/com/example/jpashop/repository/OrderSearch.java

@@ -0,0 +1,12 @@
+package com.example.jpashop.repository;
+
+import com.example.jpashop.domain.OrderStatus;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter @Setter
+public class OrderSearch {
+
+    private String memberName; // 회원 이름
+    private OrderStatus orderStatus; // 주문상태 [ORDER, CANCEL]
+}