Merge branch 'develop' into f/message_processing

src/main/java/envoy/server/data/Message.java

@@ -4,20 +4,35 @@ import java.util.Date;
 
 import javax.persistence.Entity;
 import javax.persistence.Id;
+import javax.persistence.NamedQueries;
+import javax.persistence.NamedQuery;
+import javax.persistence.Table;
 import javax.persistence.Temporal;
 import javax.persistence.TemporalType;
 
 import envoy.data.MessageBuilder;
 
 /**
+ * This class serves as a way to let Hibernate communicate with the server
+ * without bringing the dependency of JPA/Hibernate into the client.<br>
+ * It will be referenced as "database message" to clarify between the different
+ * message objects.<br>
+ * <br>
  * Project: <strong>envoy-server-standalone</strong><br>
  * File: <strong>Message.java</strong><br>
  * Created: <strong>02.01.2020</strong><br>
- * 
+ *
  * @author Kai S. K. Engelbart
  * @since Envoy Server Standalone v0.1-alpha
  */
 @Entity
+@Table(name = "messages")
+@NamedQueries(
+	{ @NamedQuery(query = "SELECT m FROM Message m WHERE m.recipient =:recipient AND m.state = 1", name = "getUnreadMessages"), @NamedQuery(
+		query = "SELECT m FROM Message m WHERE m.sender =:sender AND m.state = :state",
+		name = "find read messages"//TODO do we need this namedQuery?
+	), @NamedQuery(query = "SELECT m FROM Message m WHERE m.id = :messageId", name = "get message") }//TODO do we need this namedQuery?
+)
 public class Message {
 
 	@Id
@@ -33,49 +48,147 @@ public class Message {
 	private String								text;
 	private byte[]								attachment;
 
+	/**
+	 * The constructor for a database object
+	 *
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public Message() {}
 
 	// TODO: everything except ID
-	public Message(envoy.data.Message message) { id = message.getId(); }
+	/**
+	 * @param message the {@link envoy.data.Message} to convert into a database
+	 *                {@link Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
+	public Message(envoy.data.Message message) {
+		id		= message.getId();
+		status	= message.getStatus();
+		text	= message.getText();
+	}
 
+	/**
+	 * @return a database {@link Message} converted into an
+	 *         {@link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public envoy.data.Message toCommonMessage() {
 		// TODO: Attachment, dates
 		return new MessageBuilder(sender.getId(), recipient.getId()).setText(text).setDate(creationDate).setStatus(status).build();
 	}
 
+	/**
+	 * @return the id of a {link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public long getId() { return id; }
 
+	/**
+	 * @param id the id to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see Message#getId()
+	 */
 	public void setId(long id) { this.id = id; }
 
+	/**
+	 * @return the sender of a {link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public User getSender() { return sender; }
 
+	/**
+	 * @param sender the sender to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see Message#getSender()
+	 */
 	public void setSender(User sender) { this.sender = sender; }
 
+	/**
+	 * @return the recipient of a {link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public User getRecipient() { return recipient; }
 
+	/**
+	 * @param recipient the recipient to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see Message#getRecipient()
+	 */
 	public void setRecipient(User recipient) { this.recipient = recipient; }
 
+	/**
+	 * @return the date at which a {link envoy.data.Message} has been created
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public Date getCreationDate() { return creationDate; }
 
+	/**
+	 * @param creationDate the creation date to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see Message#getCreationDate()
+	 */
 	public void setCreationDate(Date creationDate) { this.creationDate = creationDate; }
 
+	/**
+	 * @return the date at which a {link envoy.data.Message} has been received by
+	 *         the server
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public Date getReceivedDate() { return receivedDate; }
 
+	/**
+	 * @param receivedDate the received date to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see Message#getReceivedDate()
+	 */
 	public void setReceivedDate(Date receivedDate) { this.receivedDate = receivedDate; }
 
+	/**
+	 * @return the date at which a {link envoy.data.Message} has been read
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public Date getReadDate() { return readDate; }
 
+	/**
+	 * @param readDate the read date to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see Message#getReadDate()
+	 */
 	public void setReadDate(Date readDate) { this.readDate = readDate; }
 
+	/**
+	 * @return the status of a {link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public envoy.data.Message.MessageStatus getStatus() { return status; }
 
+	/**
+	 * @param status the new status of a {link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public void setStatus(envoy.data.Message.MessageStatus status) { this.status = status; }
 
+	/**
+	 * @return the text content of a {link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public String getText() { return text; }
 
+	/**
+	 * @param text the new text content of a {@link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public void setText(String text) { this.text = text; }
 
+	/**
+	 * @return the attachment of a {@link envoy.data.Message}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public byte[] getAttachment() { return attachment; }
 
+	/**
+	 * @param attachment the new attachment
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public void setAttachment(byte[] attachment) { this.attachment = attachment; }
 }

src/main/java/envoy/server/data/User.java

@@ -7,18 +7,27 @@ import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
+import javax.persistence.NamedQuery;
+import javax.persistence.Table;
 import javax.persistence.Temporal;
 import javax.persistence.TemporalType;
 
 /**
+ * This class serves as a way to let Hibernate communicate with the server
+ * without bringing the dependency of JPA/Hibernate into the client.<br>
+ * It will be referenced as "database user" to clarify between the different
+ * user objects.<br>
+ * <br>
  * Project: <strong>envoy-server-standalone</strong><br>
  * File: <strong>User.java</strong><br>
  * Created: <strong>02.01.2020</strong><br>
- * 
+ *
  * @author Kai S. K. Engelbart
  * @since Envoy Server Standalone v0.1-alpha
  */
 @Entity
+@Table(name = "users")
+@NamedQuery(query = "SELECT u FROM DBUser u WHERE u.id = :id", name = "getUserById")
 public class User {
 
 	@Id
@@ -31,27 +40,81 @@ public class User {
 	private envoy.data.User.UserStatus	status;
 	private List<User>					contacts;
 
+	/**
+	 * @return the id of a {link envoy.data.User}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public long getId() { return id; }
 
+	/**
+	 * @param id the id to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see User#getId
+	 */
 	public void setId(long id) { this.id = id; }
 
+	/**
+	 * @return the name of a {link envoy.data.User}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public String getName() { return name; }
 
+	/**
+	 * @param name the username to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see User#getName()
+	 */
 	public void setName(String name) { this.name = name; }
 
+	/**
+	 * @return the passwordHash of a {link envoy.data.User}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public byte[] getPasswordHash() { return passwordHash; }
 
+	/**
+	 * @param passwordHash the password hash to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see User#getPasswordHash()
+	 */
 	public void setPasswordHash(byte[] passwordHash) { this.passwordHash = passwordHash; }
 
+	/**
+	 * @return the last date an {link envoy.data.User} has been online
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public Date getLastSeen() { return lastSeen; }
 
+	/**
+	 * @param lastSeen the latest date at which has been seen to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see User#getLastSeen()
+	 */
 	public void setLastSeen(Date lastSeen) { this.lastSeen = lastSeen; }
 
+	/**
+	 * @return the status of a {link envoy.data.User}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public envoy.data.User.UserStatus getStatus() { return status; }
 
+	/**
+	 * @param status the status to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see User#getStatus()
+	 */
 	public void setStatus(envoy.data.User.UserStatus status) { this.status = status; }
 
+	/**
+	 * @return the contacts of a {link envoy.data.User}
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
 	public List<User> getContacts() { return contacts; }
 
+	/**
+	 * @param contacts the contacts to set
+	 * @since Envoy Server Standalone v0.1-alpha
+	 * @see User#getContacts()
+	 */
 	public void setContacts(List<User> contacts) { this.contacts = contacts; }
 }

src/main/java/envoy/server/database/PersistenceManager.java

@@ -0,0 +1,78 @@
+package envoy.server.database;
+
+import java.util.List;
+
+import javax.persistence.EntityManager;
+import javax.persistence.Persistence;
+
+import org.hibernate.Session;
+
+import envoy.server.data.Message;
+import envoy.server.data.User;
+
+/**
+ * Project: <strong>envoy-server-standalone</strong><br>
+ * File: <strong>PersistenceManager.java</strong><br>
+ * Created: <strong>1 Jan 2020</strong><br>
+ *
+ * @author Leon Hofmeister
+ * @since Envoy Server Standalone v0.1-alpha
+ */
+public class PersistenceManager {
+
+	private EntityManager entityManager = Persistence.createEntityManagerFactory("envoy").createEntityManager();
+
+	/**
+	 * Adds a {@link User} to the database.
+	 *
+	 * @param User the {@link User} to add to the database
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
+	public void addUser(User User) { entityManager.persist(User); }
+
+	/**
+	 * Adds a {@link Message} to the database.
+	 *
+	 * @param message the {@link Message} to add to the database
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
+	public void addMessage(Message message) { entityManager.persist(message); }
+
+	/**
+	 * Updates a {@link User} in the database
+	 *
+	 * @param user the {@link User} to add to the database
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
+	public void updateUser(User user) { entityManager.unwrap(Session.class).merge(user); }
+
+	/**
+	 * Updates a {@link Message} in the database.
+	 *
+	 * @param message the message to update
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
+	public void updateMessage(Message message) { entityManager.unwrap(Session.class).merge(message); }
+
+	/**
+	 * Searches for a user with a specific id.
+	 *
+	 * @param id - the id to search for
+	 * @return the user with the specified id
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
+	public User getUserById(long id) { return (User) entityManager.createNamedQuery("getUserById").setParameter("id", id).getSingleResult(); }
+
+	/**
+	 * Returns all messages received while being offline.
+	 *
+	 * @param user - the user who wants to receive his unread messages
+	 * @return all messages that the client does not yet have (unread messages)
+	 * @since Envoy Server Standalone v0.1-alpha
+	 */
+	@SuppressWarnings("unchecked")
+	public List<Message> getUnreadMessages(User user) {
+		// TODO may need to be changed to clientId
+		return entityManager.createNamedQuery("getUnreadMessages").setParameter("recipient", user).getResultList();
+	}
+}