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Solved hibernate-cascade task #1002

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Solved hibernate-cascade task #1002

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60 changes: 56 additions & 4 deletions src/main/java/core/basesyntax/dao/impl/CommentDaoImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,14 @@

import core.basesyntax.dao.CommentDao;
import core.basesyntax.model.Comment;
import jakarta.persistence.Query;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.CriteriaQuery;
import jakarta.persistence.criteria.Root;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

public class CommentDaoImpl extends AbstractDao implements CommentDao {
public CommentDaoImpl(SessionFactory sessionFactory) {
Expand All @@ -12,21 +18,67 @@ public CommentDaoImpl(SessionFactory sessionFactory) {

@Override
public Comment create(Comment entity) {
return null;
Session session = null;
Transaction tx = null;
try {
session = factory.openSession();
tx = session.beginTransaction();
session.persist(entity);
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
}
throw new RuntimeException("Can't save comment: " + entity, e);
} finally {
if (session != null) {
session.close();
}
}
return entity;
}

@Override
public Comment get(Long id) {
return null;
try (Session session = factory.openSession()) {
return session.get(Comment.class, id);
} catch (Exception e) {
throw new RuntimeException("Can't get comment by id: " + id, e);
}
}

@Override
public List<Comment> getAll() {
return null;
CriteriaBuilder criteriaBuilder = factory.getCriteriaBuilder();
CriteriaQuery<Comment> criteriaQuery = criteriaBuilder.createQuery(Comment.class);
Root<Comment> comment = criteriaQuery.from(Comment.class);
criteriaQuery.select(comment);
try (Session session = factory.openSession()) {
Query query = session.createQuery(criteriaQuery);
return query.getResultList();
} catch (Exception e) {
throw new RuntimeException("Can't get comments from db", e);
}
}

@Override
public void remove(Comment entity) {

Session session = null;
Transaction tx = null;
try {
session = factory.openSession();
tx = session.beginTransaction();
session.remove(entity);
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
}
throw new RuntimeException("Can't remove comment: " + entity, e);
} finally {
if (session != null) {
session.close();
}
}
}
}
60 changes: 56 additions & 4 deletions src/main/java/core/basesyntax/dao/impl/MessageDaoImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,14 @@

import core.basesyntax.dao.MessageDao;
import core.basesyntax.model.Message;
import jakarta.persistence.Query;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.CriteriaQuery;
import jakarta.persistence.criteria.Root;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

public class MessageDaoImpl extends AbstractDao implements MessageDao {
public MessageDaoImpl(SessionFactory sessionFactory) {
Expand All @@ -12,21 +18,67 @@ public MessageDaoImpl(SessionFactory sessionFactory) {

@Override
public Message create(Message entity) {
return null;
Session session = null;
Transaction tx = null;
try {
session = factory.openSession();
tx = session.beginTransaction();
session.persist(entity);
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
}
throw new RuntimeException("Can't save message: " + entity, e);
} finally {
if (session != null) {
session.close();
}
}
return entity;
}

@Override
public Message get(Long id) {
return null;
try (Session session = factory.openSession()) {
return session.get(Message.class, id);
} catch (Exception e) {
throw new RuntimeException("Can't get message by id: " + id, e);
}
}

@Override
public List<Message> getAll() {
return null;
CriteriaBuilder criteriaBuilder = factory.getCriteriaBuilder();
CriteriaQuery<Message> criteriaQuery = criteriaBuilder.createQuery(Message.class);
Root<Message> message = criteriaQuery.from(Message.class);
criteriaQuery.select(message);
try (Session session = factory.openSession()) {
Query query = session.createQuery(criteriaQuery);
return query.getResultList();
} catch (Exception e) {
throw new RuntimeException("Can't get messages from db", e);
}
}

@Override
public void remove(Message entity) {

Session session = null;
Transaction tx = null;
try {
session = factory.openSession();
tx = session.beginTransaction();
session.remove(entity);
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
}
throw new RuntimeException("Can't remove message: " + entity, e);
} finally {
if (session != null) {
session.close();
}
}
}
}
27 changes: 25 additions & 2 deletions src/main/java/core/basesyntax/dao/impl/MessageDetailsDaoImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,9 @@

import core.basesyntax.dao.MessageDetailsDao;
import core.basesyntax.model.MessageDetails;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

public class MessageDetailsDaoImpl extends AbstractDao implements MessageDetailsDao {
public MessageDetailsDaoImpl(SessionFactory sessionFactory) {
Expand All @@ -11,11 +13,32 @@ public MessageDetailsDaoImpl(SessionFactory sessionFactory) {

@Override
public MessageDetails create(MessageDetails entity) {
return null;
Session session = null;
Transaction tx = null;
try {
session = factory.openSession();
tx = session.beginTransaction();
session.persist(entity);
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
}
throw new RuntimeException("Can't save message details: " + entity, e);
} finally {
if (session != null) {
session.close();
}
}
return entity;
}

@Override
public MessageDetails get(Long id) {
return null;
try (Session session = factory.openSession()) {
return session.get(MessageDetails.class, id);
} catch (Exception e) {
throw new RuntimeException("Can't get message details by id: " + id, e);
}
}
}
42 changes: 39 additions & 3 deletions src/main/java/core/basesyntax/dao/impl/SmileDaoImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,14 @@

import core.basesyntax.dao.SmileDao;
import core.basesyntax.model.Smile;
import jakarta.persistence.Query;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.CriteriaQuery;
import jakarta.persistence.criteria.Root;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

public class SmileDaoImpl extends AbstractDao implements SmileDao {
public SmileDaoImpl(SessionFactory sessionFactory) {
Expand All @@ -12,16 +18,46 @@ public SmileDaoImpl(SessionFactory sessionFactory) {

@Override
public Smile create(Smile entity) {
return null;
Session session = null;
Transaction tx = null;
try {
session = factory.openSession();
tx = session.beginTransaction();
session.persist(entity);
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
}
throw new RuntimeException("Can't save smile: " + entity, e);
} finally {
if (session != null) {
session.close();
}
}
return entity;
}

@Override
public Smile get(Long id) {
return null;
try (Session session = factory.openSession()) {
return session.get(Smile.class, id);
} catch (Exception e) {
throw new RuntimeException("Can't get smile by id: " + id, e);
}
}

@Override
public List<Smile> getAll() {
return null;
CriteriaBuilder criteriaBuilder = factory.getCriteriaBuilder();
CriteriaQuery<Smile> criteriaQuery = criteriaBuilder.createQuery(Smile.class);
Root<Smile> smile = criteriaQuery.from(Smile.class);
criteriaQuery.select(smile);
try (Session session = factory.openSession()) {
Query query = session.createQuery(criteriaQuery);
return query.getResultList();
} catch (Exception e) {
throw new RuntimeException("Can't get smiles from db", e);
}
}
}
60 changes: 56 additions & 4 deletions src/main/java/core/basesyntax/dao/impl/UserDaoImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,14 @@

import core.basesyntax.dao.UserDao;
import core.basesyntax.model.User;
import jakarta.persistence.Query;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.CriteriaQuery;
import jakarta.persistence.criteria.Root;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

public class UserDaoImpl extends AbstractDao implements UserDao {
public UserDaoImpl(SessionFactory sessionFactory) {
Expand All @@ -12,21 +18,67 @@ public UserDaoImpl(SessionFactory sessionFactory) {

@Override
public User create(User entity) {
return null;
Session session = null;
Transaction tx = null;
try {
session = factory.openSession();
tx = session.beginTransaction();
session.persist(entity);
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
}
throw new RuntimeException("Can't save user: " + entity, e);
} finally {
if (session != null) {
session.close();
}
}
return entity;
}

@Override
public User get(Long id) {
return null;
try (Session session = factory.openSession()) {
return session.get(User.class, id);
} catch (Exception e) {
throw new RuntimeException("Can't get user by id: " + id, e);
}
}

@Override
public List<User> getAll() {
return null;
CriteriaBuilder criteriaBuilder = factory.getCriteriaBuilder();
CriteriaQuery<User> criteriaQuery = criteriaBuilder.createQuery(User.class);
Root<User> user = criteriaQuery.from(User.class);
criteriaQuery.select(user);
try (Session session = factory.openSession()) {
Query query = session.createQuery(criteriaQuery);
return query.getResultList();
} catch (Exception e) {
throw new RuntimeException("Can't get users from db", e);
}
}

@Override
public void remove(User entity) {

Session session = null;
Transaction tx = null;
try {
session = factory.openSession();
tx = session.beginTransaction();
session.remove(entity);
tx.commit();
} catch (Exception e) {
if (tx != null) {
tx.rollback();
}
throw new RuntimeException("Can't remove user: " + entity, e);
} finally {
if (session != null) {
session.close();
}
}
}
}
11 changes: 11 additions & 0 deletions src/main/java/core/basesyntax/model/Comment.java
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Original file line number Diff line number Diff line change
@@ -1,15 +1,26 @@
package core.basesyntax.model;

import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.JoinColumn;
import jakarta.persistence.JoinTable;
import jakarta.persistence.ManyToMany;
import jakarta.persistence.Table;
import java.util.List;

@Entity
@Table(name = "comments")
public class Comment {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String content;
@ManyToMany()
@JoinTable(name = "comment_smiles",
joinColumns = @JoinColumn(name = "comment_id"),
inverseJoinColumns = @JoinColumn(name = "smile_id"))
private List<Smile> smiles;

public Long getId() {
Expand Down
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