Seminar2

build.gradle

@@ -1,5 +1,7 @@
 plugins {
     id 'java'
+    id 'org.springframework.boot' version '3.3.4'
+    id 'io.spring.dependency-management' version '1.1.6'
 }
 
 group = 'org.example'
@@ -8,12 +10,24 @@ version = '1.0-SNAPSHOT'
 repositories {
     mavenCentral()
 }
+java{
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
 
 dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    testImplementation ' org.springframework.boot:sorubg-boot-starter-test'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+
     testImplementation platform('org.junit:junit-bom:5.9.1')
     testImplementation 'org.junit.jupiter:junit-jupiter'
 
     implementation 'com.ibm.icu:icu4j:72.1'
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    runtimeOnly 'com.h2database:h2'
 }
 
 test {

src/main/java/org/example/diary/DiaryApplication.java

@@ -0,0 +1,11 @@
+package org.example.diary;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DiaryApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(DiaryApplication.class, args);
+    }
+}

src/main/java/org/example/diary/api/DiaryController.java

@@ -0,0 +1,56 @@
+package org.example.diary.api;
+
+import org.example.diary.repository.DiaryEntity;
+import org.example.diary.service.Diary;
+import org.example.diary.service.DiaryService;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@RestController
+public class DiaryController {
+
+    private final DiaryService diaryService;
+
+    public DiaryController(DiaryService diaryService) {
+        this.diaryService = diaryService;
+    }
+
+    @PostMapping("/diaries")
+    void post(@RequestBody DiaryCreateRequest request) {
+        diaryService.createDiary(request.title(), request.body());
+    }
+
+    @GetMapping("/diaries")
+    ResponseEntity<DiaryListResponse> get() {
+        List<Diary> diaryList = diaryService.getList();
+        List<DiaryResponse> diaryResponseList = new ArrayList<>();
+        for (Diary diary : diaryList) {
+            diaryResponseList.add(new DiaryResponse(diary.getId(), diary.getName()));
+        }
+        return ResponseEntity.ok(new DiaryListResponse(diaryResponseList));
+    }
+
+    @GetMapping("/diaries/{id}")
+    ResponseEntity<DiarySpecificResponse> getSpecific(@PathVariable long id) {
+        DiaryEntity diaryEntity = diaryService.getDiarySpecific(id);
+        return ResponseEntity.ok(new DiarySpecificResponse(
+                diaryEntity.getId(),
+                diaryEntity.getTitle(),
+                diaryEntity.getBody(),
+                diaryEntity.getDate()
+        ));
+    }
+
+    @PatchMapping("/diaries/{id}")
+    void updateDiary(@PathVariable final long id,@RequestBody final DiaryUpdateRequest request) {
+        diaryService.updateDiary(id, request);
+    }
+
+    @DeleteMapping("/diaries/{id}")
+    void deleteDiary(@PathVariable final long id){
+        diaryService.deleteDiary(id);
+    }
+}

src/main/java/org/example/diary/api/DiaryCreateRequest.java

@@ -0,0 +1,7 @@
+package org.example.diary.api;
+
+public record DiaryCreateRequest(
+        String title,
+        String body
+){
+}

src/main/java/org/example/diary/api/DiaryListResponse.java

@@ -0,0 +1,15 @@
+package org.example.diary.api;
+
+import java.util.List;
+
+public class DiaryListResponse {
+    private List<DiaryResponse> diaryResponseList;
+
+    public List<DiaryResponse> getDiaryResponseList() {
+        return diaryResponseList;
+    }
+
+    public DiaryListResponse(List<DiaryResponse> diaryResponseList) {
+        this.diaryResponseList = diaryResponseList;
+    }
+}

src/main/java/org/example/diary/api/DiaryResponse.java

@@ -0,0 +1,19 @@
+package org.example.diary.api;
+
+public class DiaryResponse {
+    private final long id;
+    private final String title;
+
+    public DiaryResponse(long id, String title) {
+        this.id = id;
+        this.title = title;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+}

src/main/java/org/example/diary/api/DiarySpecificResponse.java

@@ -0,0 +1,11 @@
+package org.example.diary.api;
+
+import java.time.LocalDateTime;
+
+public record DiarySpecificResponse(
+        long id,
+        String title,
+        String body,
+        LocalDateTime date
+        ) {
+}

src/main/java/org/example/diary/api/DiaryUpdateRequest.java

@@ -0,0 +1,4 @@
+package org.example.diary.api;
+
+public record DiaryUpdateRequest(String body) {
+}

src/main/java/org/example/diary/repository/DiaryEntity.java

@@ -0,0 +1,61 @@
+package org.example.diary.repository;
+
+import jakarta.persistence.*;
+import org.springframework.data.annotation.CreatedDate;
+
+import java.time.LocalDateTime;
+
+@Entity
+public class DiaryEntity {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    public Long id;
+
+    @Column
+    public String title;
+
+    @Column String body;
+    @CreatedDate
+    LocalDateTime date;
+
+    protected DiaryEntity(){
+    }
+
+    private DiaryEntity(final String title, final String body,final LocalDateTime date){
+        this.title = title;
+        this.body = body;
+        this.date = date;
+    }
+
+    public static DiaryEntity of(final String title,final String body,final LocalDateTime date){
+        validBodyLength(body);
+        return new DiaryEntity(title, body,date);
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getTitle(){
+        return title;
+    }
+
+    public String getBody() {
+        return body;
+    }
+
+    public LocalDateTime getDate() {
+        return date;
+    }
+
+    public void setBody(final String body){
+        validBodyLength(body);
+        this.body = body;
+    }
+
+    private static void validBodyLength(final String body){
+        if(body.length() > 30){
+            throw new IllegalArgumentException();
+        }
+    }
+}

src/main/java/org/example/diary/repository/DiaryRepository.java

@@ -0,0 +1,14 @@
+package org.example.diary.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+
+@Component
+public interface DiaryRepository extends JpaRepository<DiaryEntity,Long> {
+
+    @Query(value = "SELECT * FROM diary_entity ORDER BY date ASC LIMIT 10", nativeQuery = true)
+    List<DiaryEntity> findTop10ByCreatedDate();
+}