Servlet-JPA/Hibernate task

jpa-hibernate-model/src/main/java/com/bobocode/model/Account.java

@@ -15,7 +15,7 @@
 @Table(name = "account")
 public class Account {
     @Id
-    @GeneratedValue
+    @GeneratedValue(strategy=GenerationType.IDENTITY)
     private Long id;
     @Column(name = "first_name")
     private String firstName;

jpa-hibernate-servlet-task/src/main/java/com/bobocode/dao/impl/AccountDaoImpl.java

@@ -5,9 +5,9 @@
 
 import javax.persistence.EntityManager;
 import javax.persistence.EntityManagerFactory;
+import javax.persistence.NoResultException;
 import java.util.List;
 
-
 public class AccountDaoImpl implements AccountDao {
 
     private final EntityManagerFactory emf;
@@ -21,31 +21,56 @@ public Account findOne(Long id) {
         EntityManager em = emf.createEntityManager();
         em.getTransaction().begin();
 
-        //todo: find account by id using EntityManager
+        // todo: find account by id using EntityManager
+        Account account = em.find(Account.class, id);
 
         em.getTransaction().commit();
         em.close();
 
-        throw new UnsupportedOperationException("Method is not implemented yet. It's your homework!");
         // todo: return account
+        return account;
     }
 
     @Override
-    public Account findByEmail(String email) {
+    public Account findByEmail(String email) throws NoResultException {
         // todo: implement search by email via EntityManager
-        throw new UnsupportedOperationException("Method is not implemented yet. It's your homework!");
+        EntityManager em = emf.createEntityManager();
+        em.getTransaction().begin();
+
+        Account account = em.createQuery("Select a from Account a where a.email = :email", Account.class)
+                .setParameter("email", email)
+                .getSingleResult();
+
+        em.getTransaction().commit();
+        em.close();
+
+        return account;
     }
 
     @Override
     public List<Account> findAll() {
         //todo: find and return all accounts using EntityManagers
-        throw new UnsupportedOperationException("Method is not implemented yet. It's your homework!");
+        EntityManager em = emf.createEntityManager();
+        em.getTransaction().begin();
+
+        List<Account> accounts = em.createQuery("Select a from Account a")
+                .getResultList();
+
+        em.getTransaction().commit();
+        em.close();
+
+        return accounts;
     }
 
     @Override
     public void save(Account account) {
         // todo: save an account sing EntityManager
-    }
+        EntityManager em = emf.createEntityManager();
+        em.getTransaction().begin();
 
+        em.persist(account);
 
+        em.getTransaction().commit();
+        em.close();
+    }
 }

jpa-hibernate-servlet-task/src/main/java/com/bobocode/servlet/AccountServlet.java

@@ -7,6 +7,7 @@
 import com.bobocode.model.Account;
 
 import javax.persistence.EntityManagerFactory;
+import javax.persistence.NoResultException;
 import javax.servlet.ServletException;
 import javax.servlet.annotation.WebServlet;
 import javax.servlet.http.HttpServlet;
@@ -45,8 +46,11 @@ protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws Se
     private void processGetRequest(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
         try {
             Long id = fetchIdParameter(req);
+            String email = req.getParameter("email");
             if (id != null) {
                 processGetById(req, resp, id);
+            } else if (email != null) {
+                processGetByEmail(req, resp, email);
             } else {
                 processGetList(req, resp);
             }
@@ -70,7 +74,7 @@ private Long fetchIdParameter(HttpServletRequest req) throws IOException {
             try {
                 id = Long.parseLong(idStr);
             } catch (NumberFormatException e) {
-                throw new InvalidRequestParametersException("Input parameter id in not valid");
+                throw new InvalidRequestParametersException("Input parameter id is not valid");
             }
         }
         return id;
@@ -103,6 +107,18 @@ private void processGetById(HttpServletRequest req, HttpServletResponse resp, Lo
         }
     }
 
+    private void processGetByEmail(HttpServletRequest req, HttpServletResponse resp, String email) throws IOException, ServletException {
+        try {
+
+            Account account = accountDao.findByEmail(email);
+            req.setAttribute("account", account);
+            req.getRequestDispatcher("/account.jsp").forward(req, resp);
+
+        } catch (NoResultException e) {
+            handleNotFound(resp, "Account not found by email=" + email);
+        }
+    }
+
     private void processGetList(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
         List<Account> accountList = accountDao.findAll();
         req.setAttribute("accountList", accountList);

jpa-hibernate-util/src/main/resources/META-INF/persistence.xml

@@ -5,10 +5,10 @@
         <class>com.bobocode.model.Account</class>
 
         <properties>
-            <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/bobocode_db"/>
+            <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/postgres"/>
             <property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
-            <property name="hibernate.connection.username" value="bobouser"/>
-            <property name="hibernate.connection.password" value="bobopass"/>
+            <property name="hibernate.connection.username" value="postgres"/>
+            <property name="hibernate.connection.password" value="admin"/>
             <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL9Dialect"/>
             <property name="log4j.logger.org.hibernate" value="warn"/>