src/main/java/ru/ulstu/grant/model/Grant.java

@@ -1,5 +1,7 @@
 package ru.ulstu.grant.model;
 
+import org.hibernate.annotations.Fetch;
+import org.hibernate.annotations.FetchMode;
 import org.hibernate.validator.constraints.NotBlank;
 import ru.ulstu.core.model.BaseEntity;
 import ru.ulstu.core.model.UserContainer;
@@ -66,10 +68,11 @@ public class Grant extends BaseEntity implements UserContainer {
 
     private String comment;
 
-    //Заявка на грант
-    @ManyToOne
-    @JoinColumn(name = "file_id")
-    private FileData application;
+    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
+    @JoinColumn(name = "grant_id", unique = true)
+    @Fetch(FetchMode.SUBSELECT)
+    private List<FileData> files = new ArrayList<>();
+
 
     @ManyToOne(cascade = CascadeType.ALL)
     @JoinColumn(name = "project_id")
@@ -113,12 +116,12 @@ public class Grant extends BaseEntity implements UserContainer {
         this.comment = comment;
     }
 
-    public FileData getApplication() {
-        return application;
+    public List<FileData> getFiles() {
+        return files;
     }
 
-    public void setApplication(FileData application) {
-        this.application = application;
+    public void setFiles(List<FileData> files) {
+        this.files = files;
     }
 
     public String getTitle() {

src/main/java/ru/ulstu/grant/model/GrantDto.java

@@ -5,6 +5,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import org.apache.commons.lang3.StringUtils;
 import org.hibernate.validator.constraints.NotEmpty;
 import ru.ulstu.deadline.model.Deadline;
+import ru.ulstu.file.model.FileDataDto;
 import ru.ulstu.paper.model.Paper;
 import ru.ulstu.project.model.ProjectDto;
 import ru.ulstu.user.model.UserDto;
@@ -25,7 +26,7 @@ public class GrantDto {
     private Grant.GrantStatus status;
     private List<Deadline> deadlines = new ArrayList<>();
     private String comment;
-    private String applicationFileName;
+    private List<FileDataDto> files = new ArrayList<>();
     private ProjectDto project;
     private Set<Integer> authorIds;
     private Set<UserDto> authors;
@@ -47,6 +48,7 @@ public class GrantDto {
                     @JsonProperty("status") Grant.GrantStatus status,
                     @JsonProperty("deadlines") List<Deadline> deadlines,
                     @JsonProperty("comment") String comment,
+                    @JsonProperty("files") List<FileDataDto> files,
                     @JsonProperty("project") ProjectDto project,
                     @JsonProperty("authorIds") Set<Integer> authorIds,
                     @JsonProperty("authors") Set<UserDto> authors,
@@ -61,8 +63,9 @@ public class GrantDto {
         this.status = status;
         this.deadlines = deadlines;
         this.comment = comment;
-        this.applicationFileName = null;
+        this.files = files;
         this.project = project;
+        this.authorIds = authorIds;
         this.authors = authors;
         this.leaderId = leaderId;
         this.wasLeader = wasLeader;
@@ -78,8 +81,8 @@ public class GrantDto {
         this.status = grant.getStatus();
         this.deadlines = grant.getDeadlines();
         this.comment = grant.getComment();
+        this.files = convert(grant.getFiles(), FileDataDto::new);
         this.project = grant.getProject() == null ? null : new ProjectDto(grant.getProject());
-        this.applicationFileName = grant.getApplication() == null ? null : grant.getApplication().getName();
         this.authorIds = convert(grant.getAuthors(), user -> user.getId());
         this.authors = convert(grant.getAuthors(), UserDto::new);
         this.leaderId = grant.getLeader().getId();
@@ -130,6 +133,14 @@ public class GrantDto {
         this.comment = comment;
     }
 
+    public List<FileDataDto> getFiles() {
+        return files;
+    }
+
+    public void setFiles(List<FileDataDto> files) {
+        this.files = files;
+    }
+
     public ProjectDto getProject() {
         return project;
     }
@@ -138,14 +149,6 @@ public class GrantDto {
         this.project = project;
     }
 
-    public String getApplicationFileName() {
-        return applicationFileName;
-    }
-
-    public void setApplicationFileName(String applicationFileName) {
-        this.applicationFileName = applicationFileName;
-    }
-
     public Set<Integer> getAuthorIds() {
         return authorIds;
     }

src/main/java/ru/ulstu/grant/service/GrantService.java

@@ -5,6 +5,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import ru.ulstu.deadline.model.Deadline;
 import ru.ulstu.deadline.service.DeadlineService;
+import ru.ulstu.file.model.FileDataDto;
 import ru.ulstu.file.service.FileService;
 import ru.ulstu.grant.model.Grant;
 import ru.ulstu.grant.model.GrantDto;
@@ -21,8 +22,8 @@ import java.io.IOException;
 import java.util.Arrays;
 import java.util.Date;
 import java.util.List;
-import java.util.stream.Collectors;
 
+import static java.util.stream.Collectors.toList;
 import static org.springframework.util.ObjectUtils.isEmpty;
 import static ru.ulstu.core.util.StreamApiUtils.convert;
 import static ru.ulstu.grant.model.Grant.GrantStatus.APPLICATION;
@@ -81,9 +82,10 @@ public class GrantService {
             grant.setProject(projectService.findById(grantDto.getProject().getId()));
         }
         grant.setDeadlines(deadlineService.saveOrCreate(grantDto.getDeadlines()));
-        if (grantDto.getApplicationFileName() != null) {
-            grant.setApplication(fileService.createFileFromTmp(grantDto.getApplicationFileName()));
-        }
+
+        grant.setFiles(fileService.saveOrCreate(grantDto.getFiles().stream()
+                .filter(f -> !f.isDeleted())
+                .collect(toList())));
         grant.getAuthors().clear();
         if (grantDto.getAuthorIds() != null && !grantDto.getAuthorIds().isEmpty()) {
             grantDto.getAuthorIds().forEach(authorIds -> grant.getAuthors().add(userService.findById(authorIds)));
@@ -106,8 +108,11 @@ public class GrantService {
     @Transactional
     public Integer update(GrantDto grantDto) throws IOException {
         Grant grant = grantRepository.findOne(grantDto.getId());
-        if (grantDto.getApplicationFileName() != null && grant.getApplication() != null) {
-            fileService.deleteFile(grant.getApplication());
+
+        for (FileDataDto file : grantDto.getFiles().stream()
+                .filter(f -> f.isDeleted() && f.getId() != null)
+                .collect(toList())) {
+            fileService.delete(file.getId());
         }
         grantDto.getRemovedDeadlineIds().forEach(deadlineService::remove);
         grantRepository.save(copyFromDto(grant, grantDto));
@@ -117,9 +122,6 @@ public class GrantService {
     @Transactional
     public void delete(Integer grantId) throws IOException {
         Grant grant = grantRepository.findOne(grantId);
-        if (grant.getApplication() != null) {
-            fileService.deleteFile(grant.getApplication());
-        }
         grantRepository.delete(grant);
     }
 
@@ -156,7 +158,7 @@ public class GrantService {
             filteredUsers = filteredUsers
                     .stream()
                     .filter(getCompletedGrantLeaders()::contains)
-                    .collect(Collectors.toList());
+                    .collect(toList());
         }
         return filteredUsers;
     }
@@ -165,12 +167,11 @@ public class GrantService {
         return grantRepository.findByStatus(Grant.GrantStatus.COMPLETED)
                 .stream()
                 .map(Grant::getLeader)
-                .collect(Collectors.toList());
+                .collect(toList());
     }
 
     public List<Paper> getGrantPapers(List<Integer> paperIds) {
         return paperService.findAllSelect(paperIds);
-
     }
 
     public List<Paper> getAllPapers() {
@@ -192,5 +193,4 @@ public class GrantService {
         }
         grantDto.getDeadlines().remove((int) deadlineId);
     }
-
 }