СДАЛ СДАЛ СДАЛ

demo/src/main/java/com/example/demo/DemoApplication.java

@@ -51,9 +51,13 @@ public class DemoApplication implements CommandLineRunner {
 
 			log.info("Create default members values");
 
-			final var member1 = memberService.create(group1.getId(), new MemberEntity("mem1", "handle1", "expert"));
-			final var member2 = memberService.create(group1.getId(), new MemberEntity( "mem2", "handle2", "expert"));
-			final var member3 = memberService.create(group2.getId(), new MemberEntity("mem3", "handle3", "expert"));
+			final var member1 = memberService.create(group1.getId(), new MemberEntity("mem1", "handle1", "expert", 1600L));
+			final var member2 = memberService.create(group1.getId(), new MemberEntity( "mem2", "handle2", "expert", 1715L));
+			final var member3 = memberService.create(group1.getId(), new MemberEntity("mem1", "handle1", "expert", 1800L));
+			final var member4 = memberService.create(group1.getId(), new MemberEntity( "mem2", "handle2", "expert", 1815L));
+			final var member5 = memberService.create(group1.getId(), new MemberEntity("mem1", "handle1", "expert", 1611L));
+			final var member6 = memberService.create(group1.getId(), new MemberEntity( "mem2", "handle2", "expert", 1717L));
+			final var member7 = memberService.create(group2.getId(), new MemberEntity("mem3", "handle3", "expert", 1720L));
 		}
 	}
 }

demo/src/main/java/com/example/demo/core/api/PageDto.java

@@ -0,0 +1,97 @@
+package com.example.demo.core.api;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PageDto<D> {
+    private List<D> items = new ArrayList<>();
+    private int itemsCount;
+    private int currentPage;
+    private int currentSize;
+    private int totalPages;
+    private long totalItems;
+    private boolean isFirst;
+    private boolean isLast;
+    private boolean hasNext;
+    private boolean hasPrevious;
+
+    public List<D> getItems() {
+        return items;
+    }
+
+    public void setItems(List<D> items) {
+        this.items = items;
+    }
+
+    public int getItemsCount() {
+        return itemsCount;
+    }
+
+    public void setItemsCount(int itemsCount) {
+        this.itemsCount = itemsCount;
+    }
+
+    public int getCurrentPage() {
+        return currentPage;
+    }
+
+    public void setCurrentPage(int currentPage) {
+        this.currentPage = currentPage;
+    }
+
+    public int getCurrentSize() {
+        return currentSize;
+    }
+
+    public void setCurrentSize(int currentSize) {
+        this.currentSize = currentSize;
+    }
+
+    public int getTotalPages() {
+        return totalPages;
+    }
+
+    public void setTotalPages(int totalPages) {
+        this.totalPages = totalPages;
+    }
+
+    public long getTotalItems() {
+        return totalItems;
+    }
+
+    public void setTotalItems(long totalItems) {
+        this.totalItems = totalItems;
+    }
+
+    public boolean isFirst() {
+        return isFirst;
+    }
+
+    public void setFirst(boolean isFirst) {
+        this.isFirst = isFirst;
+    }
+
+    public boolean isLast() {
+        return isLast;
+    }
+
+    public void setLast(boolean isLast) {
+        this.isLast = isLast;
+    }
+
+    public boolean isHasNext() {
+        return hasNext;
+    }
+
+    public void setHasNext(boolean hasNext) {
+        this.hasNext = hasNext;
+    }
+
+    public boolean isHasPrevious() {
+        return hasPrevious;
+    }
+
+    public void setHasPrevious(boolean hasPrevious) {
+        this.hasPrevious = hasPrevious;
+    }
+}

demo/src/main/java/com/example/demo/core/api/PageDtoMapper.java

@@ -0,0 +1,25 @@
+package com.example.demo.core.api;
+
+import java.util.function.Function;
+
+import org.springframework.data.domain.Page;
+
+public class PageDtoMapper {
+    private PageDtoMapper() {
+    }
+
+    public static <D, E> PageDto<D> toDto(Page<E> page, Function<E, D> mapper) {
+        final PageDto<D> dto = new PageDto<>();
+        dto.setItems(page.getContent().stream().map(mapper::apply).toList());
+        dto.setItemsCount(page.getNumberOfElements());
+        dto.setCurrentPage(page.getNumber());
+        dto.setCurrentSize(page.getSize());
+        dto.setTotalPages(page.getTotalPages());
+        dto.setTotalItems(page.getTotalElements());
+        dto.setFirst(page.isFirst());
+        dto.setLast(page.isLast());
+        dto.setHasNext(page.hasNext());
+        dto.setHasPrevious(page.hasPrevious());
+        return dto;
+    }
+}

demo/src/main/java/com/example/demo/members/api/MemberController.java

@@ -3,6 +3,7 @@ package com.example.demo.members.api;
 import java.util.List;
 
 import org.modelmapper.ModelMapper;
+import org.springframework.data.domain.Page;
 import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -13,6 +14,8 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
+import com.example.demo.core.api.PageDto;
+import com.example.demo.core.api.PageDtoMapper;
 import com.example.demo.core.configuration.Constants;
 import com.example.demo.members.model.MemberEntity;
 import com.example.demo.members.service.MemberService;
@@ -37,13 +40,34 @@ public class MemberController {
         return modelMapper.map(entity, MemberDto.class);
     }
 
+
     private MemberEntity toEntity(MemberDto dto) {
         final MemberEntity entity = modelMapper.map(dto, MemberEntity.class);
         return entity;
     }
 
+    @GetMapping("/getmemberstop")
+    public List<MemberDto> getMembersTop() {
+        return memberService.getMembersTop(5).stream().map(this::toDto).toList();
+    }
+
+    @GetMapping("/getmemberstoplist")
+    public List<MemberDto> getMembersTopList() {
+        return memberService.getMembersTopList(5).stream().map(this::toDto).toList();
+    }
+
+    @GetMapping("/getmemberstopgrouplist")
+    public List<MemberDto> getMembersTopGroupList(@RequestParam(name = "groupId", defaultValue = "0") Long groupId) {
+        return memberService.getMembersTopGroupList(5, groupId).stream().map(this::toDto).toList();
+    }
+
+    @GetMapping("/getmemberstopgroup")
+    public List<MemberDto> getMembersTopGroup(@RequestParam(name = "groupId", defaultValue = "0") Long groupId) {
+        return memberService.getMembersTopGroup(5, groupId).stream().map(this::toDto).toList();
+    }
+    
     @GetMapping
-    public List<MemberDto> getAll(@RequestParam(name = "groupId", defaultValue = "0") Long groupId) {
+    public List<MemberDto> getAll(@RequestParam(name = "group", defaultValue = "0") Long groupId) {
         return memberService.getAll(groupId).stream().map(this::toDto).toList();
     }
 

demo/src/main/java/com/example/demo/members/api/MemberDto.java

@@ -15,6 +15,8 @@ public class MemberDto {
     private String handle;
     @NotBlank
     private String rank;
+    @NotBlank
+    private Long rating;
 
     public Long getId() {
         return id;
@@ -24,6 +26,14 @@ public class MemberDto {
         this.id = id;
     }
 
+    public Long getRating() {
+        return rating;
+    }
+
+    public void setRating(Long rating) {
+        this.rating = rating;
+    }
+
     public String getHandle() {
         return handle;
     }

demo/src/main/java/com/example/demo/members/model/MemberEntity.java

@@ -25,14 +25,17 @@ public class MemberEntity extends BaseEntity {
     private String handle;
     @Column(nullable = false,  length = 30)
     private String rank;
+    @Column
+    private Long rating;
 
     public MemberEntity() {
     }
 
-    public MemberEntity(String name, String handle, String rank) {
+    public MemberEntity(String name, String handle, String rank, Long rating) {
         this.name = name;
         this.handle = handle;
         this.rank = rank;
+        this.rating = rating;
     }
 
     public GroupEntity getGroup() {
@@ -54,6 +57,14 @@ public class MemberEntity extends BaseEntity {
         this.name = name;
     }
 
+    public Long getRating() {
+        return rating;
+    }
+
+    public void setRating(Long rating) {
+        this.rating = rating;
+    }
+
     public String getHandle() {
         return handle;
     }
@@ -85,6 +96,7 @@ public class MemberEntity extends BaseEntity {
         return Objects.equals(other.getId(), id)
                 && Objects.equals(other.getName(), name)
                 && Objects.equals(other.getHandle(), handle)
-                && Objects.equals(other.getRank(), rank);
+                && Objects.equals(other.getRank(), rank)
+                && Objects.equals(other.getRating(), rating);
     }
 }

demo/src/main/java/com/example/demo/members/repository/MemberRepository.java

@@ -7,6 +7,8 @@ import com.example.demo.members.model.MemberEntity;
 import java.util.List;
 import java.util.Optional;
 
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.CrudRepository;
 
@@ -14,5 +16,26 @@ public interface MemberRepository extends CrudRepository<MemberEntity, Long> {
     Optional<MemberEntity> findOneById(long id);
 
     List<MemberEntity> findByGroupId(long groupId);
+    @Query("select "
+            + "m"
+            + " from MemberEntity m"
+            + " order by m.rating")
+    Page<MemberEntity> getMembersTop(Pageable pageable);
 
+    @Query("select "
+            + "m"
+            + " from MemberEntity m where m.group.id = ?1"
+            + " order by m.rating desc")
+    Page<MemberEntity> getMembersTopGroup(long groupId, Pageable pageable);
+    @Query("select "
+            + "m"
+            + " from MemberEntity m"
+            + " order by m.rating desc")
+    List<MemberEntity> getMembersTopList();
+
+    @Query("select "
+            + "m"
+            + " from MemberEntity m where m.group.id = ?1"
+            + " order by m.rating desc")
+    List<MemberEntity> getMembersTopGroupList(long groupId);
 }

demo/src/main/java/com/example/demo/members/service/MemberService.java

@@ -2,6 +2,9 @@ package com.example.demo.members.service;
 
 import java.util.List;
 
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -28,6 +31,35 @@ public class MemberService {
         return repository.findByGroupId(groupId);
     }
 
+    @Transactional(readOnly = true)
+    public List<MemberEntity> getMembersTop(int top) {
+        final Pageable pageRequest = PageRequest.of(0, top);
+        return repository.getMembersTop(pageRequest).getContent();
+    }
+
+    @Transactional(readOnly = true)
+    public List<MemberEntity> getMembersTopList(int top) {
+        var res = repository.getMembersTopList();
+        if(top > res.size())
+            return res;
+        return res.subList(0, top);
+    }
+
+    @Transactional(readOnly = true)
+    public List<MemberEntity> getMembersTopGroupList(int top, long groupId) {
+        var res = repository.getMembersTopGroupList(groupId);
+        if(top > res.size())
+            return res;
+        return res.subList(0, top);
+    }
+
+    @Transactional(readOnly = true)
+    public List<MemberEntity> getMembersTopGroup(int top, long groupId) {
+        final Pageable pageRequest = PageRequest.of(0, top);
+        return repository.getMembersTopGroup(groupId, pageRequest).getContent();
+    }
+
+
     @Transactional(readOnly = true)
     public MemberEntity get(long id) {
         return repository.findOneById(id)

demo/src/main/resources/application.properties

@@ -12,8 +12,8 @@ spring.datasource.password=password
 spring.datasource.driver-class-name=org.h2.Driver
 spring.jpa.hibernate.ddl-auto=create
 spring.jpa.open-in-view=false
-# spring.jpa.show-sql=true
-# spring.jpa.properties.hibernate.format_sql=true
+spring.jpa.show-sql=true
+spring.jpa.properties.hibernate.format_sql=true
 
 # H2 console
 spring.h2.console.enabled=true

demo/src/test/java/com/example/demo/MemberServiceTests.java

@@ -40,9 +40,9 @@ class MemberServiceTests {
 
         user = userService.create(new UserEntity("oleg", "tester1", "1234"));
         group = groupService.create(user.getId(), new GroupEntity("group1"));
-        member = memberService.create(group.getId(), new MemberEntity("member1", "mem1","expert"));
-		memberService.create(group.getId(), new MemberEntity("member1", "mem1","expert"));
-		memberService.create(group.getId(), new MemberEntity("member1", "mem1","expert"));
+        member = memberService.create(group.getId(), new MemberEntity("member1", "mem1","expert", 1615L));
+		memberService.create(group.getId(), new MemberEntity("member1", "mem1","expert", 1712L));
+		memberService.create(group.getId(), new MemberEntity("member1", "mem1","expert", 1651L));
     }
 
     @AfterEach
@@ -64,7 +64,7 @@ class MemberServiceTests {
 
 	@Test
     void createNullableTest() {
-        final MemberEntity nullableMember= new MemberEntity(null, null, null);
+        final MemberEntity nullableMember= new MemberEntity(null, null, null, null);
         Assertions.assertThrows(DataIntegrityViolationException.class, () -> memberService.create(group.getId(), nullableMember));
     }
 
@@ -75,7 +75,7 @@ class MemberServiceTests {
         final String oldName = member.getName();
 		final String oldHandle = member.getHandle();
 		final String oldRank = member.getRank();
-        final MemberEntity newEntity = memberService.update(member.getId(), new MemberEntity(test, test, test));
+        final MemberEntity newEntity = memberService.update(member.getId(), new MemberEntity(test, test, test, null));
         Assertions.assertEquals(3, memberService.getAll(group.getId()).size());
         Assertions.assertEquals(newEntity, memberService.get(member.getId()));
         Assertions.assertEquals(test, newEntity.getName());
@@ -91,7 +91,8 @@ class MemberServiceTests {
         memberService.delete(member.getId());
         Assertions.assertEquals(2, memberService.getAll(group.getId()).size());
 
-        final MemberEntity newEntity = memberService.create(group.getId(), new MemberEntity(member.getName(), member.getHandle(), member.getRank()));
+        final MemberEntity newEntity = memberService.create(group.getId(), new MemberEntity(member.getName(), member.getHandle(), member.getRank(),
+        member.getRating()));
         Assertions.assertEquals(3, memberService.getAll(group.getId()).size());
         Assertions.assertNotEquals(member.getId(), newEntity.getId());
     }

demo/src/test/java/com/example/demo/UserServiceTests.java

@@ -48,7 +48,6 @@ class UserServiceTests {
 	@Test
     void createNotUniqueHandleTest() {
         final UserEntity nonUniqueHandleUser = new UserEntity("oleg", "tester4", "1234");
-
         Assertions.assertThrows(IllegalArgumentException.class, () -> userService.create(nonUniqueHandleUser));
     }