src/main/java/ru/ulstu/paper/controller/PaperController.java

@@ -11,6 +11,7 @@ import org.springframework.web.bind.annotation.RestController;
 import ru.ulstu.configuration.Constants;
 import ru.ulstu.core.model.response.Response;
 import ru.ulstu.paper.model.PaperDto;
+import ru.ulstu.paper.model.PaperFilterDto;
 import ru.ulstu.paper.model.PaperStatusDto;
 import ru.ulstu.paper.service.PaperService;
 
@@ -37,23 +38,28 @@ public class PaperController {
     }
 
     @PostMapping
-    public Response createPaper(@RequestBody @Valid PaperDto paperDto) throws IOException {
-        return new Response(paperService.create(paperDto));
+    public Response<Integer> createPaper(@RequestBody @Valid PaperDto paperDto) throws IOException {
+        return new Response<>(paperService.create(paperDto));
     }
 
     @PutMapping
-    public Response updatePaper(@RequestBody @Valid PaperDto paperDto) throws IOException {
-        return new Response(paperService.update(paperDto));
+    public Response<Integer> updatePaper(@RequestBody @Valid PaperDto paperDto) throws IOException {
+        return new Response<>(paperService.update(paperDto));
     }
 
     @DeleteMapping("/{paper-id}")
-    public Response delete(@PathVariable("paper-id") Integer paperId) throws IOException {
+    public Response<Boolean> delete(@PathVariable("paper-id") Integer paperId) throws IOException {
         paperService.delete(paperId);
-        return new Response(true);
+        return new Response<>(true);
     }
 
     @GetMapping("/statuses")
     public Response<List<PaperStatusDto>> getPaperStatuses() {
         return new Response<>(paperService.getPaperStatuses());
     }
+
+    @PostMapping("/filter")
+    public Response<List<PaperDto>> filter(@RequestBody @Valid PaperFilterDto paperFilterDto) throws IOException {
+        return new Response<>(paperService.filter(paperFilterDto));
+    }
 }

src/main/java/ru/ulstu/paper/model/PaperFilterDto.java

@@ -0,0 +1,24 @@
+package ru.ulstu.paper.model;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class PaperFilterDto {
+    private final Integer authorId;
+    private final Integer year;
+
+    @JsonCreator
+    public PaperFilterDto(@JsonProperty("authorId") Integer authorId,
+                          @JsonProperty("year") Integer year) {
+        this.authorId = authorId;
+        this.year = year;
+    }
+
+    public Integer getAuthorId() {
+        return authorId;
+    }
+
+    public Integer getYear() {
+        return year;
+    }
+}

src/main/java/ru/ulstu/paper/repository/PaperRepository.java

@@ -1,9 +1,15 @@
 package ru.ulstu.paper.repository;
 
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import ru.ulstu.paper.model.Paper;
+import ru.ulstu.user.model.User;
 
 import java.util.List;
 
 public interface PaperRepository extends JpaRepository<Paper, Integer> {
+
+    @Query("SELECT p FROM Paper p WHERE (:author IS NULL OR :author MEMBER OF p.authors) AND YEAR(p.createDate) = :year OR :year IS NULL")
+    List<Paper> filter(@Param("author") User author, @Param("year") Integer year);
 }

src/main/java/ru/ulstu/paper/service/PaperService.java

@@ -5,6 +5,7 @@ import org.springframework.transaction.annotation.Transactional;
 import ru.ulstu.file.service.FileService;
 import ru.ulstu.paper.model.Paper;
 import ru.ulstu.paper.model.PaperDto;
+import ru.ulstu.paper.model.PaperFilterDto;
 import ru.ulstu.paper.model.PaperStatusDto;
 import ru.ulstu.paper.repository.PaperRepository;
 import ru.ulstu.user.model.User;
@@ -40,7 +41,7 @@ public class PaperService {
         return paperRepository.findAll().stream().sorted((paper1, paper2) -> {
             int statusCompareResult =
                     Integer.valueOf(Arrays.asList(Paper.PaperStatus.values()).indexOf(paper1.getStatus()))
-                            .compareTo(Integer.valueOf(Arrays.asList(Paper.PaperStatus.values()).indexOf(paper2.getStatus())));
+                            .compareTo(Arrays.asList(Paper.PaperStatus.values()).indexOf(paper2.getStatus()));
             if (statusCompareResult != 0) {
                 return statusCompareResult;
             }
@@ -53,7 +54,7 @@ public class PaperService {
     }
 
     @Transactional
-    public int create(PaperDto paperDto) throws IOException {
+    public Integer create(PaperDto paperDto) throws IOException {
         Paper newPaper = copyFromDto(new Paper(), paperDto);
         newPaper = paperRepository.save(newPaper);
         paperNotificationService.sendCreateNotification(newPaper);
@@ -72,9 +73,7 @@ public class PaperService {
             paper.setFileData(fileService.createFileFromTmp(paperDto.getTmpFileName()));
         }
         if (paperDto.getAuthors() != null && !paperDto.getAuthors().isEmpty()) {
-            paperDto.getAuthors().forEach(authorIds -> {
-                paper.getAuthors().add(userService.findById(authorIds.getId()));
-            });
+            paperDto.getAuthors().forEach(authorIds -> paper.getAuthors().add(userService.findById(authorIds.getId())));
         }
         return paper;
     }
@@ -105,7 +104,7 @@ public class PaperService {
     }
 
     public List<PaperStatusDto> getPaperStatuses() {
-        return convert(Arrays.asList(Paper.PaperStatus.values()), status -> new PaperStatusDto(status));
+        return convert(Arrays.asList(Paper.PaperStatus.values()), PaperStatusDto::new);
     }
 
     @Transactional
@@ -123,4 +122,8 @@ public class PaperService {
 
         return paper;
     }
+
+    public List<PaperDto> filter(PaperFilterDto filterDto) {
+        return convert(paperRepository.filter(userService.findById(filterDto.getAuthorId()), filterDto.getYear()), PaperDto::new);
+    }
 }