[1-2단계 - 데이터베이스 적용]

src/main/java/roomescape/controller/PageController.java

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+package roomescape.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class PageController {
+    @GetMapping
+    public String home() {
+        return "admin/index";
+    }
+
+    @GetMapping("/admin/reservation")
+    public String reservation() {
+        return "admin/reservation-legacy";
+    }
+}

src/main/java/roomescape/controller/ReservationController.java

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+package roomescape.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import roomescape.model.Reservation;
+import roomescape.service.ReservationService;
+
+import java.sql.PreparedStatement;
+import java.util.List;
+
+@RestController
+@RequestMapping("/reservations")
+public class ReservationController {
+    private final ReservationService reservationService;
+
+    @Autowired
+    public ReservationController(ReservationService reservationService) {
+        this.reservationService = reservationService;
+    }
+
+    @PostMapping
+    public Long insert(@RequestBody Reservation reservation) {
+        return reservationService.addReservation(reservation);
+    }
+
+    @GetMapping
+    public List<Reservation> read() {
+        return reservationService.lookUpReservation();
+    }
+
+    @DeleteMapping("/{id}")
+    public void delete(@PathVariable Long id) {
+        reservationService.deleteReservation(id);
+    }
+}

src/main/java/roomescape/controller/ReservationTimeController.java

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+package roomescape.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+import roomescape.model.ReservationTime;
+import roomescape.service.ReservationTimeService;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/times")
+public class ReservationTimeController {
+
+    private ReservationTimeService reservationTimeService;
+
+    @Autowired
+    public ReservationTimeController(ReservationTimeService reservationTimeService) {
+        this.reservationTimeService = reservationTimeService;
+    }
+
+    @PostMapping
+    public ReservationTime insert(@RequestBody String startAt) {
+        return reservationTimeService.addReservation(startAt);
+    }
+
+    @GetMapping
+    public List<ReservationTime> read() {
+        return reservationTimeService.lookUpReservationTime();
+    }
+
+    @DeleteMapping("/{id}")
+    public void delete(@PathVariable Long id) {
+        reservationTimeService.deleteReservation(id);
+    }
+}

src/main/java/roomescape/model/Reservation.java

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+package roomescape.model;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+public class Reservation {
+    private Long id;
+    private String name;
+    private String date;
+    private Long timeId;
+
+    public Reservation(Long id, String name, String date, Long timeId) {
+        this.id = id;
+        this.name = name;
+        this.date = date;
+        this.timeId = timeId;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getDate() {
+        return date;
+    }
+
+    public Long getTimeId() {
+        return timeId;
+    }
+}

src/main/java/roomescape/model/ReservationTime.java

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+package roomescape.model;
+
+public class ReservationTime {
+    private Long id;
+    private String startAt;
+
+    public ReservationTime(String startAt) {
+        this(0L, startAt);
+    }
+
+    public ReservationTime(Long id, String startAt) {
+        this.id = id;
+        this.startAt = startAt;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getStartAt() {
+        return startAt;
+    }
+
+}

src/main/java/roomescape/repository/ReservationRepository.java

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+package roomescape.repository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+import org.springframework.jdbc.core.simple.SimpleJdbcInsert;
+import org.springframework.jdbc.support.GeneratedKeyHolder;
+import org.springframework.jdbc.support.KeyHolder;
+import org.springframework.stereotype.Repository;
+import roomescape.model.Reservation;
+
+import javax.sql.DataSource;
+import java.sql.PreparedStatement;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Repository
+public class ReservationRepository {
+    private final JdbcTemplate jdbcTemplate;
+    private final SimpleJdbcInsert jdbcInsert;
+    private final RowMapper<Reservation> rowMapper = (resultSet, rowNum) -> new Reservation(
+            resultSet.getLong("id"),
+            resultSet.getString("name"),
+            resultSet.getString("date"),
+            resultSet.getLong("time_id")
+    );
+
+    @Autowired
+    public ReservationRepository(SimpleJdbcInsert jdbcInsert, JdbcTemplate jdbcTemplate, DataSource dataSource) {
+        this.jdbcTemplate = jdbcTemplate;
+        this.jdbcInsert = new SimpleJdbcInsert(dataSource)
+                .withTableName("reservation")
+                .usingGeneratedKeyColumns("id");
+    }
+
+    public Long save(Reservation reservation) {
+        Map<String, Object> params = new HashMap<>();
+        params.put("id", reservation.getId());
+        params.put("name", reservation.getName());
+        params.put("date", reservation.getDate());
+        params.put("time_id", reservation.getTimeId());
+
+        return jdbcInsert.executeAndReturnKey(params).longValue();
+    }
+
+    public List<Reservation> readAll() {
+        String sql = "SELECT \n" +
+                "r.id as reservation_id, \n" +
+                "r.name as reservation_name, \n" +
+                "r.date as reservation_date, \n" +
+                "t.id as time_id, \n" +
+                "t.start_at as time_start_at \n" +
+                "FROM reservation as r inner join reservation_time as t on r.time_id = t.id";
+        return jdbcTemplate.query(sql, rowMapper);
+    }
+
+    public void deleteById(Long id) {
+        String sql = "DELETE FROM reservation WHERE id = ?";
+        jdbcTemplate.update(sql, id);
+    }
+}

src/main/java/roomescape/repository/ReservationTimeRepository.java

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+package roomescape.repository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+import org.springframework.jdbc.core.simple.SimpleJdbcInsert;
+import org.springframework.jdbc.support.GeneratedKeyHolder;
+import org.springframework.jdbc.support.KeyHolder;
+import roomescape.model.ReservationTime;
+
+import javax.sql.DataSource;
+import java.sql.*;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class ReservationTimeRepository {
+
+    private final JdbcTemplate jdbcTemplate;
+    private final SimpleJdbcInsert jdbcInsert;
+
+    private final RowMapper rowMapper = (resultSet, rowNum) -> new ReservationTime(
+        resultSet.getLong("id"),
+        resultSet.getString("start_at")
+    );
+
+    @Autowired
+    public ReservationTimeRepository(JdbcTemplate jdbcTemplate, SimpleJdbcInsert jdbcInsert, DataSource dataSource) {
+        this.jdbcTemplate = jdbcTemplate;
+        this.jdbcInsert = new SimpleJdbcInsert(dataSource)
+                .withTableName("reservation_time")
+                .usingGeneratedKeyColumns("id");
+    }
+
+    public ReservationTime save(String startAt) {
+        Map<String, Object> params = new HashMap<>();
+        params.put("startAt", startAt);
+        return new ReservationTime(jdbcInsert.executeAndReturnKey(params).longValue(), startAt);
+    }
+
+    public List<ReservationTime> readAll() {
+        String sql = "SELECT * FROM reservation_time";
+        return jdbcTemplate.query(sql, rowMapper);
+    }
+
+    public void deleteById(Long id) {
+        String sql = "DELETE FROM reservation_time WHERE id = ?";
+        jdbcTemplate.update(sql, id);
+    }
+}

src/main/java/roomescape/service/ReservationService.java

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+package roomescape.service;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import roomescape.model.Reservation;
+import roomescape.repository.ReservationRepository;
+
+import java.util.List;
+
+@Service
+public class ReservationService {
+    private final ReservationRepository reservationRepository;
+
+    @Autowired
+    public ReservationService(ReservationRepository reservationRepository) {
+        this.reservationRepository = reservationRepository;
+    }
+
+    public Long addReservation(Reservation reservation) {
+        return reservationRepository.save(reservation);
+    }
+
+    public List<Reservation> lookUpReservation() {
+        return reservationRepository.readAll();
+    }
+
+    public void deleteReservation(Long id) {
+        reservationRepository.deleteById(id);
+    }
+}

src/main/java/roomescape/service/ReservationTimeService.java

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+package roomescape.service;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import roomescape.model.ReservationTime;
+import roomescape.repository.ReservationRepository;
+import roomescape.repository.ReservationTimeRepository;
+
+import java.util.List;
+
+@Service
+public class ReservationTimeService {
+
+    private final ReservationTimeRepository reservationTimeRepository;
+
+    @Autowired
+    public ReservationTimeService(ReservationTimeRepository reservationTimeRepository) {
+        this.reservationTimeRepository = reservationTimeRepository;
+    }
+
+    public ReservationTime addReservation(String startAt) {
+        return reservationTimeRepository.save(startAt);
+    }
+
+    public List<ReservationTime> lookUpReservationTime() {
+        return reservationTimeRepository.readAll();
+    }
+
+    public void deleteReservation(Long id) {
+        reservationTimeRepository.deleteById(id);
+    }
+}

src/main/resources/application.properties

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+spring.h2.console.enabled=true
+spring.h2.console.path=/h2-console
+spring.datasource.url=jdbc:h2:mem:database
+spring.datasource.driver-class-name=org.h2.Driver

src/main/resources/schema.sql

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+CREATE TABLE reservation_time
+(
+    id   BIGINT       NOT NULL AUTO_INCREMENT,
+    start_at VARCHAR(255) NOT NULL,
+    PRIMARY KEY (id)
+);
+
+CREATE TABLE reservation
+(
+    id   BIGINT       NOT NULL AUTO_INCREMENT,
+    name VARCHAR(255) NOT NULL,
+    date VARCHAR(255) NOT NULL,
+    time_id BIGINT,
+    PRIMARY KEY (id),
+    FOREIGN KEY (time_id) REFERENCES reservation_time (id)
+);