Merge pull request #203 from devHudi/step1

[Spring 경로 조회 - 1단계] 후디(조동현) 미션 제출합니다.

README.md

@@ -1,39 +1,11 @@
-<p align="center">
-    <img width="200px;" src="https://raw.githubusercontent.com/woowacourse/atdd-subway-admin-frontend/master/images/main_logo.png"/>
-</p>
-<p align="center">
-  <a href="https://techcourse.woowahan.com/c/Dr6fhku7" alt="woowacuorse subway">
-    <img alt="Website" src="https://img.shields.io/website?url=https%3A%2F%2Fedu.nextstep.camp%2Fc%2FR89PYi5H">
-  </a>
-  <img alt="GitHub" src="https://img.shields.io/github/license/woowacourse/atdd-subway-path">
-</p>
-
-<br>
-
-# 지하철 노선도 미션
-스프링 과정 실습을 위한 지하철 노선도 애플리케이션
-
-<br>
-
-## 🚀 Getting Started
-### Usage
-#### application 구동
-```
-./gradlew bootRun
-```
-<br>
-
-## ✏️ Code Review Process
-[텍스트와 이미지로 살펴보는 온라인 코드 리뷰 과정](https://github.com/next-step/nextstep-docs/tree/master/codereview)
-
-<br>
-
-## 🐞 Bug Report
-
-버그를 발견한다면, [Issues](https://github.com/woowacourse/atdd-subway-path/issues) 에 등록해주세요 :)
-
-<br>
-
-## 📝 License
-
-This project is [MIT](https://github.com/woowacourse/atdd-subway-path/blob/master/LICENSE) licensed.
+## 지하철 노선도 최단경로 미션 기능구현 목록
+
+- [x] 출발역과 도착역을 전달받아 최단경로 조회
+- [x] 경로 요금 계산
+  > 기본운임(10㎞ 이내): 기본운임 1,250원
+  >
+  > 이용 거리 초과 시 추가운임 부과
+  >
+  > 10km~50km: 5km 까지 마다 100원 추가
+  >
+  > 50km 초과: 8km 까지 마다 100원 추가

build.gradle

@@ -16,6 +16,7 @@ dependencies {
 	// spring
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	implementation 'org.springframework.boot:spring-boot-starter-jdbc'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
 
 	// log
 	implementation 'net.rakugakibox.spring.boot:logback-access-spring-boot-starter:2.7.1'

src/main/java/wooteco/subway/SubwayApplication.java

@@ -9,5 +9,4 @@ public class SubwayApplication {
 	public static void main(String[] args) {
 		SpringApplication.run(SubwayApplication.class, args);
 	}
-
 }

src/main/java/wooteco/subway/WebConfig.java

@@ -6,8 +6,9 @@
 
 @Configuration
 public class WebConfig implements WebMvcConfigurer {
+
     @Override
     public void addCorsMappings(CorsRegistry registry) {
         registry.addMapping("/**").allowedMethods("*").allowedOriginPatterns("*");
     }
-}
+}

src/main/java/wooteco/subway/dao/LineDao.java

@@ -0,0 +1,91 @@
+package wooteco.subway.dao;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.simple.SimpleJdbcInsert;
+import org.springframework.stereotype.Repository;
+import wooteco.subway.domain.Line;
+import wooteco.subway.domain.Section;
+import wooteco.subway.domain.Station;
+
+@Repository
+public class LineDao {
+
+    private static final String NON_EXISTENT_ID_EXCEPTION = "존재하지 않는 id입니다.";
+
+    private final JdbcTemplate jdbcTemplate;
+
+    public LineDao(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    public Line save(Line line) {
+        final SimpleJdbcInsert simpleJdbcInsert = new SimpleJdbcInsert(jdbcTemplate)
+                .withTableName("line").usingGeneratedKeyColumns("id");
+
+        Map<String, Object> parameters = new HashMap<>();
+        parameters.put("name", line.getName());
+        parameters.put("color", line.getColor());
+
+        final Number number = simpleJdbcInsert.executeAndReturnKey(parameters);
+        return Line.createWithoutSection(number.longValue(), line.getName(), line.getColor());
+    }
+
+    public boolean existsByName(String name) {
+        final String sql = "SELECT COUNT(*) FROM line WHERE name = ?";
+        final Integer numOfLine = jdbcTemplate.queryForObject(sql, Integer.class, name);
+        return !numOfLine.equals(0);
+    }
+
+    public List<Line> findAll() {
+        final String sql = "SELECT * FROM line";
+        return jdbcTemplate.query(sql, this::lineMapper);
+    }
+
+    public Line findById(Long id) {
+        final String sql = "SELECT * FROM line WHERE id = ?";
+        return jdbcTemplate.queryForObject(sql, this::lineMapper, id);
+    }
+
+    private Line lineMapper(ResultSet rs, int rowNum) throws SQLException {
+        return Line.createWithId(
+                rs.getLong("id"),
+                rs.getString("name"),
+                rs.getString("color"),
+                findSectionsByLineId(rs.getLong("id"))
+        );
+    }
+
+    private List<Section> findSectionsByLineId(Long lineId) {
+        final String sql =
+                "select s.id sid, s.distance sdistance, us.id usid, us.name usname, ds.id dsid, ds.name dsname " +
+                        "from sections s " +
+                        "join station us on s.up_station_id = us.id " +
+                        "join station ds on s.down_station_id = ds.id " +
+                        "where line_id = ?";
+        return jdbcTemplate.query(sql, ((rs, rowNum) -> {
+            return Section.createWithId(rs.getLong("sid"), new Station(rs.getLong("usid"), rs.getString("usname")),
+                    new Station(rs.getLong("dsid"), rs.getString("dsname")), rs.getInt("sdistance"));
+        }), lineId);
+    }
+
+    public void updateLineById(Long id, String name, String color) {
+        final String sql = "UPDATE line SET name=?, color=? WHERE id=?";
+        validateResult(jdbcTemplate.update(sql, name, color, id));
+    }
+
+    public void deleteById(Long id) {
+        final String sql = "DELETE FROM line WHERE id = ?";
+        validateResult(jdbcTemplate.update(sql, id));
+    }
+
+    private void validateResult(int result) {
+        if (result == 0) {
+            throw new IllegalArgumentException(NON_EXISTENT_ID_EXCEPTION);
+        }
+    }
+}

src/main/java/wooteco/subway/dao/SectionDao.java

@@ -0,0 +1,61 @@
+package wooteco.subway.dao;
+
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+import java.util.List;
+import org.springframework.jdbc.core.BatchPreparedStatementSetter;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.stereotype.Repository;
+import wooteco.subway.domain.Section;
+import wooteco.subway.domain.Station;
+
+@Repository
+public class SectionDao {
+
+    private final JdbcTemplate jdbcTemplate;
+
+    public SectionDao(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    public void save(List<Section> sections, Long lineId) {
+        batchInsert(sections, lineId);
+    }
+
+    public List<Section> findAll() {
+        final String sql =
+                "select s.id sid, s.distance sdistance, us.id usid, us.name usname, ds.id dsid, ds.name dsname " +
+                        "from sections s " +
+                        "join station us on s.up_station_id = us.id " +
+                        "join station ds on s.down_station_id = ds.id";
+        return jdbcTemplate.query(sql, ((rs, rowNum) -> {
+            return Section.createWithId(rs.getLong("sid"), new Station(rs.getLong("usid"), rs.getString("usname")),
+                    new Station(rs.getLong("dsid"), rs.getString("dsname")), rs.getInt("sdistance"));
+        }));
+    }
+
+    private int[] batchInsert(List<Section> sections, Long lineId) {
+        return this.jdbcTemplate.batchUpdate(
+                "insert into sections (line_id, up_station_id, down_station_id, distance) values (?, ?, ?, ?)",
+                new BatchPreparedStatementSetter() {
+                    @Override
+                    public void setValues(PreparedStatement ps, int i) throws SQLException {
+                        ps.setLong(1, lineId);
+                        ps.setLong(2, sections.get(i).getUpStation().getId());
+                        ps.setLong(3, sections.get(i).getDownStation().getId());
+                        ps.setInt(4, sections.get(i).getDistance().getValue());
+                    }
+
+                    @Override
+                    public int getBatchSize() {
+                        return sections.size();
+                    }
+                }
+        );
+    }
+
+    public void deleteByLineId(Long lineId) {
+        final String sql = "delete from sections where line_id = ?";
+        jdbcTemplate.update(sql, lineId);
+    }
+}

src/main/java/wooteco/subway/dao/StationDao.java

@@ -1,30 +1,65 @@
 package wooteco.subway.dao;
 
-import org.springframework.util.ReflectionUtils;
-import wooteco.subway.domain.Station;
-
-import java.lang.reflect.Field;
-import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+import org.springframework.jdbc.core.simple.SimpleJdbcInsert;
+import org.springframework.stereotype.Repository;
+import wooteco.subway.domain.Station;
 
+@Repository
 public class StationDao {
-    private static Long seq = 0L;
-    private static List<Station> stations = new ArrayList<>();
 
-    public static Station save(Station station) {
-        Station persistStation = createNewObject(station);
-        stations.add(persistStation);
-        return persistStation;
+    private static final String NON_EXISTENT_ID_EXCEPTION = "존재하지 않는 id입니다.";
+
+    private final JdbcTemplate jdbcTemplate;
+    private final RowMapper<Station> stationRowMapper = (resultSet, rowNum) -> new Station(
+            resultSet.getLong("id"),
+            resultSet.getString("name")
+    );
+
+    public StationDao(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    public Station save(Station station) {
+        final SimpleJdbcInsert simpleJdbcInsert = new SimpleJdbcInsert(jdbcTemplate)
+                .withTableName("station").usingGeneratedKeyColumns("id");
+
+        Map<String, Object> parameters = new HashMap<>();
+        parameters.put("name", station.getName());
+
+        final Number number = simpleJdbcInsert.executeAndReturnKey(parameters);
+        return new Station(number.longValue(), station.getName());
+    }
+
+    public List<Station> findAll() {
+        final String sql = "SELECT * FROM station";
+
+        return jdbcTemplate.query(sql, stationRowMapper);
+    }
+
+    public boolean existsByName(String name) {
+        final String sql = "select count(*) from station where name = ?";
+        final Integer numOfStation = jdbcTemplate.queryForObject(sql, Integer.class, name);
+        return !numOfStation.equals(0);
+    }
+
+    public void deleteById(Long id) {
+        final String sql = "DELETE FROM station where id = ?";
+        validateResult(jdbcTemplate.update(sql, id));
     }
 
-    public static List<Station> findAll() {
-        return stations;
+    private void validateResult(int result) {
+        if (result == 0) {
+            throw new IllegalArgumentException(NON_EXISTENT_ID_EXCEPTION);
+        }
     }
 
-    private static Station createNewObject(Station station) {
-        Field field = ReflectionUtils.findField(Station.class, "id");
-        field.setAccessible(true);
-        ReflectionUtils.setField(field, station, ++seq);
-        return station;
+    public Station findById(Long id) {
+        final String sql = "SELECT * FROM station WHERE id = ?";
+        return jdbcTemplate.queryForObject(sql, stationRowMapper, id);
     }
-}
+}

src/main/java/wooteco/subway/domain/Distance.java

@@ -0,0 +1,63 @@
+package wooteco.subway.domain;
+
+import java.util.Objects;
+
+public class Distance {
+
+    private final int value;
+
+    public Distance(int value) {
+        validatePositive(value);
+        this.value = value;
+    }
+
+    public Distance(double value) {
+        this((int) value);
+    }
+
+    private void validatePositive(int value) {
+        if (value <= 0) {
+            throw new IllegalArgumentException("거리는 0이하가 될 수 없습니다.");
+        }
+    }
+
+    public Distance add(Distance other) {
+        return new Distance(value + other.value);
+    }
+
+    public Distance subtract(Distance other) {
+        return new Distance(value - other.value);
+    }
+
+    public boolean isLessThanOrEqualTo(Distance other) {
+        return value <= other.value;
+    }
+
+    public int getValue() {
+        return value;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Distance distance = (Distance) o;
+        return value == distance.value;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(value);
+    }
+
+    @Override
+    public String toString() {
+        return "Distance{" +
+                "value=" + value +
+                '}';
+    }
+}