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implemented DAO methods #1025

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implemented DAO methods #1025

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83 changes: 79 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 +2,11 @@

import core.basesyntax.dao.CommentDao;
import core.basesyntax.model.Comment;
import core.basesyntax.model.Smile;
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 +15,93 @@ public CommentDaoImpl(SessionFactory sessionFactory) {

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

private void isEntityNull(Comment entity) {
if (entity == null) {
throw new IllegalArgumentException("You can't save null comment.");
}
}

private void areSmilesPersisted(Comment entity) {
List<Smile> smiles = entity.getSmiles();
if (smiles != null) {
for (Smile smile : smiles) {
if (smile != null && smile.getId() == null) {
throw new IllegalArgumentException("Can't save comment to DB if the smile "
+ "is not stored in DB. " + entity);
}
}
}
}

private void isCommentNull(Comment entity) {
if (entity == null) {
throw new RuntimeException("Comment is null: " + 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;
try (Session session = factory.openSession()) {
return session.createQuery("from Comment", Comment.class)
.list();
} catch (Exception e) {
throw new RuntimeException("Can't get list of all comments from DB",
e);
}
}

@Override
public void remove(Comment entity) {

Session session = null;
Transaction transaction = null;
try {
session = factory.openSession();
transaction = session.beginTransaction();
session.remove(entity);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
throw new RuntimeException("Can't remove comment from DB: "
+ entity, e);
} finally {
if (session != null) {
session.close();
}
}
}
}
53 changes: 49 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 @@ -3,7 +3,9 @@
import core.basesyntax.dao.MessageDao;
import core.basesyntax.model.Message;
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 +14,64 @@ public MessageDaoImpl(SessionFactory sessionFactory) {

@Override
public Message create(Message entity) {
return null;
Session session = null;
Transaction transaction = null;
try {
session = factory.openSession();
transaction = session.beginTransaction();
session.persist(entity);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
throw new RuntimeException("Can't add message to DB; 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;
try (Session session = factory.openSession()) {
return session.createQuery("from Message", Message.class).list();
} catch (Exception e) {
throw new RuntimeException("Can't get list of all messages from DB", e);
}
}

@Override
public void remove(Message entity) {

Session session = null;
Transaction transaction = null;
try {
session = factory.openSession();
transaction = session.beginTransaction();
session.remove(entity);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
throw new RuntimeException("Can't remove message from DB: ", e);
} finally {
if (session != null) {
session.close();
}
}
}
}
29 changes: 27 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 +13,34 @@ public MessageDetailsDaoImpl(SessionFactory sessionFactory) {

@Override
public MessageDetails create(MessageDetails entity) {
return null;
Session session = null;
Transaction transaction = null;
try {
session = factory.openSession();
transaction = session.beginTransaction();
session.persist(entity);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
throw new RuntimeException("Can't add Message Details to DB; 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);
}
}
}
35 changes: 32 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 @@ -3,7 +3,9 @@
import core.basesyntax.dao.SmileDao;
import core.basesyntax.model.Smile;
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 +14,43 @@ public SmileDaoImpl(SessionFactory sessionFactory) {

@Override
public Smile create(Smile entity) {
return null;
Session session = null;
Transaction transaction = null;
try {
session = factory.openSession();
transaction = session.beginTransaction();
session.persist(entity);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
throw new RuntimeException("Can't add Smile to DB; 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;
try (Session session = factory.openSession()) {
return session.createQuery("from Smile", Smile.class).list();
} catch (Exception e) {
throw new RuntimeException("Can't get list of all Smiles from DB", e);
}
}
}
54 changes: 50 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 @@ -3,7 +3,9 @@
import core.basesyntax.dao.UserDao;
import core.basesyntax.model.User;
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 +14,65 @@ public UserDaoImpl(SessionFactory sessionFactory) {

@Override
public User create(User entity) {
return null;
Session session = null;
Transaction transaction = null;
try {
session = factory.openSession();
transaction = session.beginTransaction();
session.persist(entity);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
throw new RuntimeException("Can't add User to DB; 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;
try (Session session = factory.openSession()) {
return session.createQuery("from User", User.class).list();
} catch (Exception e) {
throw new RuntimeException("Can't get list of all Users from DB", e);
}
}

@Override
public void remove(User entity) {

Session session = null;
Transaction transaction = null;
try {
session = factory.openSession();
transaction = session.beginTransaction();
session.remove(entity);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
throw new RuntimeException("Can't remove User from DB: "
+ entity, e);
} finally {
if (session != null) {
session.close();
}
}
}
}
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