Works with native query now needst to be hql

buisnesslogic/src/main/java/com/plannaplan/repositories/GroupRepository.java

@@ -1,6 +1,7 @@
 package com.plannaplan.repositories;
 
 import java.util.List;
+import java.util.HashMap;
 import java.util.Optional;
 
 import com.plannaplan.entities.Groups;
@@ -21,4 +22,10 @@ public interface GroupRepository extends JpaRepository<Groups, Long> {
     @Query("SELECT COUNT(*) AS assinged_times FROM Assignment WHERE isPastAssignment=false GROUP BY group HAVING group_id=?1")
     Optional<Number> getAssignedAmount(Long groupId);
 
+    // @Query("SELECT group, COUNT(*) AS assinged_times FROM Assignment WHERE
+    // isPastAssignment=false GROUP BY group HAVING group_id IN (:ids)")
+    @Query(nativeQuery = true, value = "SELECT group_id, COUNT(*) AS assinged_times FROM assignment WHERE is_past_assignment=0 GROUP BY group_id HAVING group_id IN (7,9,10,12)")
+
+    List<Object[]> getAssignedAmounts(@Param("ids") List<Long> groupIds);
+
 }

buisnesslogic/src/main/java/com/plannaplan/services/GroupService.java

@@ -1,7 +1,10 @@
 package com.plannaplan.services;
 
+import java.util.HashMap;
 import java.util.List;
+import java.util.Objects;
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 import com.plannaplan.entities.Groups;
 import com.plannaplan.repositories.GroupRepository;
@@ -51,7 +54,17 @@ public class GroupService {
 
     }
 
-    public int getAssignedAmount(Long groupId) {
-        return this.repo.getAssignedAmount(groupId).orElse(Integer.valueOf(0)).intValue();
+    public HashMap<Groups, Integer> getTakenPlaces(List<Groups> groups) {
+        HashMap<Groups, Integer> respoonse = new HashMap<>();
+        // groups.forEach(group -> {
+        // final Long id = group.getId();
+        // final Integer ammount =
+        // this.repo.getAssignedAmount(id).orElse(Integer.valueOf(0)).intValue();
+        // respoonse.put(group, ammount);
+        // });
+
+        List<Object[]> respoonse2 = this.repo.getAssignedAmounts(
+                groups.stream().filter(Objects::nonNull).map(Groups::getId).collect(Collectors.toList()));
+        return respoonse;
     }
 }

buisnesslogic/src/test/java/com/plannaplan/services/GroupServiceTest.java

@@ -31,4 +31,9 @@ public class GroupServiceTest {
         groupService.delete(group);
         assertTrue(this.groupService.getGroupsAmmount() == startAmmount);
     }
+
+    @Test
+    public void shouldGetGroupsAssignmentsAmmounts() {
+
+    }
 }