fix(module-web,module-ejb): add suppport to get and add user from database

module-ejb/src/main/java/pl/myboardgames/UserDao.java

@@ -1,38 +1,36 @@
 package pl.myboardgames;
 
-import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import javax.ejb.Stateless;
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import javax.persistence.Query;
 
 @Stateless
 public class UserDao {
 
     private Set<UserEntity> users;
     
+    @PersistenceContext
+    EntityManager em; 
+
     public UserDao() {
-
-        users = new HashSet<>();
-
-        UserEntity user = new UserEntity();
-        user.setUsername("test");
-        user.setId(new Long(0));
-
-        users.add(user);
     }
 
     public Set<UserEntity>getAll() {
+        Query query = em.createQuery("SELECT u FROM UserEntity u", UserEntity.class);
+        Set<UserEntity> users = new HashSet<UserEntity>(query.getResultList());
         return users;
     }
 
     public UserEntity getById(Long aId) {
-        return users.stream().filter(user -> user.getId().equals(aId)).findFirst().get();
+        return em.find(UserEntity.class, aId);
     }
 
     public UserEntity add(UserEntity aUser) {
-        aUser.setId(Long.valueOf(users.size()+1));
-        users.add(aUser);
+        em.persist(aUser);
         return aUser;
     }
 

module-ejb/src/main/java/pl/myboardgames/UserEntity.java

@@ -5,9 +5,11 @@
  */
 package pl.myboardgames;
 
+import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
+import javax.persistence.Table;
 
 /**
  *
@@ -15,10 +17,12 @@ import javax.persistence.Id;
  */
 
 @Entity
+@Table( name = "users" )
 public class UserEntity {
 
     @Id
     @GeneratedValue
+    @Column(name = "id", updatable = false, nullable = false)
     private Long id;
     private String username;
 

module-web/src/main/java/pl/myboardgames/UserDto.java

@@ -5,7 +5,6 @@
  */
 package pl.myboardgames;
 
-import java.util.List;
 
 /**
  *
@@ -17,14 +16,27 @@ public class UserDto {
     private String username;
     
     public UserDto() {
+       
     }
     
+    public UserDto(String username) {  
+        this.username = username;
+    }
 
     public UserDto(UserEntity aUser) {
         this.username = aUser.getUsername();
         this.id = aUser.getId();
     }
 
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+
     public Long getId() {
         return id;
     }

module-web/src/main/java/pl/myboardgames/UserShortDto.java

@@ -19,4 +19,12 @@ public class UserShortDto {
         username = aUser.getUsername();
     }
 
+    public Long getId() {
+        return id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
 }