From 27777044b40f154b08cb622892438eaeb04d64f9 Mon Sep 17 00:00:00 2001
From: holsoni <soniakostashchuk@gmail,com>
Date: Wed, 9 Aug 2023 19:34:21 +0300
Subject: [PATCH] implemented MovieDao and MovieService

---
 pom.xml                                       | 12 +++
 src/main/java/mate/academy/HibernateUtil.java | 20 +++++
 src/main/java/mate/academy/Main.java          | 11 ++-
 src/main/java/mate/academy/dao/MovieDao.java  | 10 +++
 .../java/mate/academy/dao/MovieDaoImpl.java   | 52 +++++++++++++
 .../exception/DataProcessingException.java    |  7 ++
 src/main/java/mate/academy/model/Movie.java   | 77 +++++++++++++++++++
 .../mate/academy/service/MovieService.java    |  9 +++
 .../academy/service/MovieServiceImpl.java     | 24 ++++++
 src/main/resources/hibernate.cfg.xml          | 13 ++++
 10 files changed, 234 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/mate/academy/HibernateUtil.java
 create mode 100644 src/main/java/mate/academy/dao/MovieDao.java
 create mode 100644 src/main/java/mate/academy/dao/MovieDaoImpl.java
 create mode 100644 src/main/java/mate/academy/exception/DataProcessingException.java
 create mode 100644 src/main/java/mate/academy/model/Movie.java
 create mode 100644 src/main/java/mate/academy/service/MovieService.java
 create mode 100644 src/main/java/mate/academy/service/MovieServiceImpl.java
 create mode 100644 src/main/resources/hibernate.cfg.xml

diff --git a/pom.xml b/pom.xml
index f0412faf9..7cae6f71a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,6 +48,18 @@
             <artifactId>hsqldb</artifactId>
             <version>2.3.4</version>
         </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-core</artifactId>
+            <version>5.6.15.Final</version>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.28</version>
+        </dependency>
+
+
     </dependencies>
     <build>
         <plugins>
diff --git a/src/main/java/mate/academy/HibernateUtil.java b/src/main/java/mate/academy/HibernateUtil.java
new file mode 100644
index 000000000..e95f1ad73
--- /dev/null
+++ b/src/main/java/mate/academy/HibernateUtil.java
@@ -0,0 +1,20 @@
+package mate.academy;
+
+import org.hibernate.SessionFactory;
+import org.hibernate.cfg.Configuration;
+
+public class HibernateUtil {
+    private static final SessionFactory instance = initSessionFactory();
+
+    private HibernateUtil() {
+    }
+
+    public static SessionFactory initSessionFactory() {
+        return new Configuration().configure().buildSessionFactory();
+    }
+
+    public static SessionFactory getSessionFactory() {
+        return instance;
+    }
+
+}
diff --git a/src/main/java/mate/academy/Main.java b/src/main/java/mate/academy/Main.java
index 0058fbf96..6e52370e7 100644
--- a/src/main/java/mate/academy/Main.java
+++ b/src/main/java/mate/academy/Main.java
@@ -1,7 +1,16 @@
 package mate.academy;
 
+import mate.academy.lib.Injector;
+import mate.academy.model.Movie;
+import mate.academy.service.MovieService;
+
 public class Main {
     public static void main(String[] args) {
-
+        MovieService movieService = (MovieService) Injector.getInstance("mate.academy")
+                .getInstance(MovieService.class);
+        Movie greatGatsby = new Movie("Great Gatsby", "Ambitious and idealistic");
+        movieService.add(greatGatsby);
+        Movie fromDB = movieService.get(greatGatsby.getId());
+        System.out.println(greatGatsby.equals(fromDB));
     }
 }
diff --git a/src/main/java/mate/academy/dao/MovieDao.java b/src/main/java/mate/academy/dao/MovieDao.java
new file mode 100644
index 000000000..e5f725e39
--- /dev/null
+++ b/src/main/java/mate/academy/dao/MovieDao.java
@@ -0,0 +1,10 @@
+package mate.academy.dao;
+
+import java.util.Optional;
+import mate.academy.model.Movie;
+
+public interface MovieDao {
+    Movie add(Movie movie);
+
+    Optional<Movie> get(Long id);
+}
diff --git a/src/main/java/mate/academy/dao/MovieDaoImpl.java b/src/main/java/mate/academy/dao/MovieDaoImpl.java
new file mode 100644
index 000000000..62767a373
--- /dev/null
+++ b/src/main/java/mate/academy/dao/MovieDaoImpl.java
@@ -0,0 +1,52 @@
+package mate.academy.dao;
+
+import java.util.Optional;
+import mate.academy.HibernateUtil;
+import mate.academy.exception.DataProcessingException;
+import mate.academy.lib.Dao;
+import mate.academy.model.Movie;
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+
+@Dao
+public class MovieDaoImpl implements MovieDao {
+    @Override
+    public Movie add(Movie movie) {
+        Session session = null;
+        Transaction transaction = null;
+        try {
+            session = HibernateUtil.getSessionFactory().openSession();
+            transaction = session.beginTransaction();
+            session.save(movie);
+            transaction.commit();
+        } catch (Exception ex) {
+            if (transaction != null) {
+                transaction.rollback();
+            }
+            throw new DataProcessingException("Can't add movie to the DB " + movie);
+        } finally {
+            if (session != null) {
+                session.close();
+            }
+        }
+
+        return movie;
+    }
+
+    @Override
+    public Optional<Movie> get(Long id) {
+        Session session = null;
+        Movie movie;
+        try {
+            session = HibernateUtil.getSessionFactory().openSession();
+            movie = session.get(Movie.class, id);
+        } catch (Exception ex) {
+            throw new DataProcessingException("Can't get movie from the DB with id" + id);
+        } finally {
+            if (session != null) {
+                session.close();
+            }
+        }
+        return Optional.ofNullable(movie);
+    }
+}
diff --git a/src/main/java/mate/academy/exception/DataProcessingException.java b/src/main/java/mate/academy/exception/DataProcessingException.java
new file mode 100644
index 000000000..11850856f
--- /dev/null
+++ b/src/main/java/mate/academy/exception/DataProcessingException.java
@@ -0,0 +1,7 @@
+package mate.academy.exception;
+
+public class DataProcessingException extends RuntimeException {
+    public DataProcessingException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/mate/academy/model/Movie.java b/src/main/java/mate/academy/model/Movie.java
new file mode 100644
index 000000000..01cec4a6f
--- /dev/null
+++ b/src/main/java/mate/academy/model/Movie.java
@@ -0,0 +1,77 @@
+package mate.academy.model;
+
+import java.util.Objects;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "movies")
+public class Movie {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String title;
+    private String description;
+
+    public Movie() {
+    }
+
+    public Movie(String title, String description) {
+        this.title = title;
+        this.description = description;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    @Override
+    public String toString() {
+        return "Movie{"
+                + "id=" + id
+                + ", title='" + title + '\''
+                + ", description='" + description + "'\'}";
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Movie movie = (Movie) o;
+        return Objects.equals(id, movie.id)
+                && Objects.equals(title, movie.title)
+                && Objects.equals(description, movie.description);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, title, description);
+    }
+}
diff --git a/src/main/java/mate/academy/service/MovieService.java b/src/main/java/mate/academy/service/MovieService.java
new file mode 100644
index 000000000..80e46c951
--- /dev/null
+++ b/src/main/java/mate/academy/service/MovieService.java
@@ -0,0 +1,9 @@
+package mate.academy.service;
+
+import mate.academy.model.Movie;
+
+public interface MovieService {
+    Movie add(Movie movie);
+
+    Movie get(Long id);
+}
diff --git a/src/main/java/mate/academy/service/MovieServiceImpl.java b/src/main/java/mate/academy/service/MovieServiceImpl.java
new file mode 100644
index 000000000..8e536b23f
--- /dev/null
+++ b/src/main/java/mate/academy/service/MovieServiceImpl.java
@@ -0,0 +1,24 @@
+package mate.academy.service;
+
+import mate.academy.dao.MovieDao;
+import mate.academy.exception.DataProcessingException;
+import mate.academy.lib.Inject;
+import mate.academy.lib.Service;
+import mate.academy.model.Movie;
+
+@Service
+public class MovieServiceImpl implements MovieService {
+    @Inject
+    private MovieDao movieDao;
+
+    @Override
+    public Movie add(Movie movie) {
+        return movieDao.add(movie);
+    }
+
+    @Override
+    public Movie get(Long id) {
+        return movieDao.get(id).orElseThrow(
+                () -> new DataProcessingException("Can't find movie with id " + id));
+    }
+}
diff --git a/src/main/resources/hibernate.cfg.xml b/src/main/resources/hibernate.cfg.xml
new file mode 100644
index 000000000..c73fc60c5
--- /dev/null
+++ b/src/main/resources/hibernate.cfg.xml
@@ -0,0 +1,13 @@
+<hibernate-configuration>
+    <session-factory>
+        <property name="connection.driver_class">com.mysql.cj.jdbc.Driver</property>
+        <property name="connection.url">jdbc:mysql://localhost:3306/cinema</property>
+        <property name="connection.username">root</property>
+        <property name="connection.password">password</property>
+        <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>
+        <property name="show_sql">true</property>
+        <property name="hbm2ddl.auto">create-drop</property>
+
+        <mapping class ="mate.academy.model.Movie"/>
+    </session-factory>
+</hibernate-configuration>
\ No newline at end of file