[김대겸] Step2 PR

README.md

@@ -6,3 +6,22 @@
 -[X] 지하철역 관련 인수 테스트를 완성하세요.
     -[X] 지하철역 목록 조회 인수 테스트 작성하기
     -[X] 지하철역 삭제 인수 테스트 작성하기
+
+## 🚀 2단계 - 지하철 노선 기능
+
+### 기능 요구사항
+- [X] 지하철 노선 생성
+  - [X] 인수 테스트 작성
+  - [X] 인수 테스트를 충족하는 기능 구현
+- [X] 지하철 노선 목록 조회
+  - [X] 인수 테스트 작성
+  - [X] 인수 테스트를 충족하는 기능 구현
+- [X] 지하철 노선 조회
+  - [X] 인수 테스트 작성
+  - [X] 인수 테스트를 충족하는 기능 구현
+- [X] 지하철 노선 수정
+  - [X] 인수 테스트 작성
+  - [X] 인수 테스트를 충족하는 기능 구현
+- [X] 지하철 노선 삭제
+  - [X] 인수 테스트 작성
+  - [X] 인수 테스트를 충족하는 기능 구현

src/main/java/nextstep/subway/application/LineService.java

@@ -0,0 +1,54 @@
+package nextstep.subway.application;
+
+import nextstep.subway.domain.Line;
+import nextstep.subway.domain.LineRepository;
+import nextstep.subway.dto.LineRequest;
+import nextstep.subway.dto.LineResponse;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+@Transactional(readOnly = true)
+public class LineService {
+    private final LineRepository lineRepository;
+
+    public LineService(LineRepository lineRepository) {
+        this.lineRepository = lineRepository;
+    }
+
+    @Transactional
+    public LineResponse saveLine(LineRequest lineRequest) {
+        Line persistLine = lineRepository.save(lineRequest.toLine());
+        return LineResponse.of(persistLine);
+    }
+
+    public List<LineResponse> findAllLines() {
+        List<Line> lines = lineRepository.findAll();
+
+        return lines.stream()
+                .map(LineResponse::of)
+                .collect(Collectors.toList());
+    }
+
+    public LineResponse findLine(final Long id) {
+        Line persistLine = lineRepository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException(id + "번 노선을 찾을 수 없습니다."));
+        return LineResponse.of(persistLine);
+    }
+
+    @Transactional
+    public void deleteLineById(Long id) {
+        lineRepository.deleteById(id);
+    }
+
+    @Transactional
+    public LineResponse modify(final Long id, final LineRequest lineRequest) {
+        Line persistLine = lineRepository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException(id + "번 노선을 찾을 수 없습니다."));
+        persistLine.modify(lineRequest);
+        return LineResponse.of(lineRepository.save(persistLine));
+    }
+}

src/main/java/nextstep/subway/domain/Line.java

@@ -0,0 +1,41 @@
+package nextstep.subway.domain;
+
+import nextstep.subway.dto.LineRequest;
+
+import javax.persistence.*;
+
+@Entity
+public class Line extends BaseEntity {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    @Column(unique = true)
+    private String name;
+    @Column
+    private String color;
+
+    protected Line() {
+    }
+
+    public Line(final String name, final String color) {
+        this.name = name;
+        this.color = color;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getColor() {
+        return color;
+    }
+
+    public void modify(final LineRequest lineRequest) {
+        this.name = lineRequest.getName();
+        this.color = lineRequest.getColor();
+    }
+}

src/main/java/nextstep/subway/domain/LineRepository.java

@@ -0,0 +1,10 @@
+package nextstep.subway.domain;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface LineRepository extends JpaRepository<Line, Long> {
+    @Override
+    List<Line> findAll();
+}

src/main/java/nextstep/subway/dto/LineRequest.java

@@ -0,0 +1,20 @@
+package nextstep.subway.dto;
+
+import nextstep.subway.domain.Line;
+
+public class LineRequest {
+    private String name;
+    private String color;
+
+    public String getColor() {
+        return color;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Line toLine() {
+        return new Line(name, color);
+    }
+}

src/main/java/nextstep/subway/dto/LineResponse.java

@@ -0,0 +1,45 @@
+package nextstep.subway.dto;
+
+import nextstep.subway.domain.Line;
+
+import java.time.LocalDateTime;
+
+public class LineResponse {
+    private final Long id;
+    private final String name;
+    private final String color;
+    private final LocalDateTime createdDate;
+    private final LocalDateTime modifiedDate;
+
+    public static LineResponse of(Line line) {
+        return new LineResponse(line.getId(), line.getName(), line.getColor(), line.getCreatedDate(), line.getModifiedDate());
+    }
+
+    public LineResponse(final Long id, final String name, final String color, final LocalDateTime createdDate, final LocalDateTime modifiedDate) {
+        this.id = id;
+        this.name = name;
+        this.color = color;
+        this.createdDate = createdDate;
+        this.modifiedDate = modifiedDate;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getColor() {
+        return color;
+    }
+
+    public LocalDateTime getCreatedDate() {
+        return createdDate;
+    }
+
+    public LocalDateTime getModifiedDate() {
+        return modifiedDate;
+    }
+}

src/main/java/nextstep/subway/ui/LineController.java

@@ -0,0 +1,53 @@
+package nextstep.subway.ui;
+
+import nextstep.subway.application.LineService;
+import nextstep.subway.dto.LineRequest;
+import nextstep.subway.dto.LineResponse;
+import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.net.URI;
+import java.util.List;
+
+@RestController
+public class LineController {
+    private final LineService lineService;
+
+    public LineController(LineService lineService) {
+        this.lineService = lineService;
+    }
+
+    @PostMapping("/lines")
+    public ResponseEntity<LineResponse> createLine(@RequestBody LineRequest lineRequest) {
+        LineResponse line = lineService.saveLine(lineRequest);
+        return ResponseEntity.created(URI.create("/lines/" + line.getId())).body(line);
+    }
+
+    @GetMapping("/lines/{id}")
+    public ResponseEntity<LineResponse> showLines(@PathVariable Long id) {
+        return ResponseEntity.ok().body(lineService.findLine(id));
+    }
+
+    @PutMapping("/lines/{id}")
+    public ResponseEntity<LineResponse> modifyLine(@PathVariable Long id, @RequestBody LineRequest lineRequest) {
+        return ResponseEntity.ok().body(lineService.modify(id, lineRequest));
+    }
+
+    @DeleteMapping("/lines/{id}")
+    public ResponseEntity<Void> deleteLines(@PathVariable Long id) {
+        lineService.deleteLineById(id);
+        return ResponseEntity.noContent().build();
+    }
+
+    @GetMapping(value = "/lines", produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<List<LineResponse>> showLines() {
+        return ResponseEntity.ok().body(lineService.findAllLines());
+    }
+
+    @ExceptionHandler(DataIntegrityViolationException.class)
+    public ResponseEntity<Void> handleIllegalArgsException() {
+        return ResponseEntity.badRequest().build();
+    }
+}

src/test/java/nextstep/subway/AcceptanceTest.java

@@ -0,0 +1,23 @@
+package nextstep.subway;
+
+import io.restassured.RestAssured;
+import org.junit.jupiter.api.BeforeEach;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.test.context.ActiveProfiles;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+public class AcceptanceTest {
+    @LocalServerPort
+    int port;
+
+    @Autowired
+    private DatabaseCleanup databaseCleanup;
+
+    @BeforeEach
+    public void setUp() {
+        RestAssured.port = port;
+        databaseCleanup.execute();
+    }
+}

src/test/java/nextstep/subway/DatabaseCleanup.java

@@ -0,0 +1,49 @@
+package nextstep.subway;
+
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Profile;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import javax.sql.DataSource;
+import java.sql.DatabaseMetaData;
+import java.sql.ResultSet;
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+public class DatabaseCleanup implements InitializingBean {
+    @Autowired
+    private DataSource dataSource;
+
+    @Autowired
+    private JdbcTemplate jdbcTemplate;
+
+    private List<String> tableNames;
+
+    @Override
+    public void afterPropertiesSet() {
+        tableNames = new ArrayList<>();
+        try {
+            DatabaseMetaData metaData = dataSource.getConnection().getMetaData();
+            ResultSet tables = metaData.getTables(null, null, null, new String[]{"TABLE"});
+            while (tables.next()) {
+                String tableName = tables.getString("TABLE_NAME");
+                tableNames.add(tableName);
+            }
+        } catch (Exception e) {
+            throw new RuntimeException();
+        }
+    }
+
+    @Transactional
+    public void execute() {
+        jdbcTemplate.execute("SET REFERENTIAL_INTEGRITY FALSE");
+        for (String tableName : tableNames) {
+            jdbcTemplate.execute("TRUNCATE TABLE " + tableName);
+        }
+        jdbcTemplate.execute("SET REFERENTIAL_INTEGRITY TRUE");
+    }
+}