Made Event<T> an abstract class, added ContactSearchResult

src/main/java/envoy/event/ContactOperationEvent.java

@@ -12,7 +12,7 @@ import envoy.data.User;
  * @author Maximilian Käfer
  * @since Envoy Common v0.2-alpha
  */
-public class ContactOperationEvent implements Event<User> {
+public class ContactOperationEvent extends Event<User> {
 
 	/**
 	 * Specifies the operation performed on a contact list.<br>
@@ -37,8 +37,7 @@ public class ContactOperationEvent implements Event<User> {
 		REMOVE;
 	}
 
-	private final User		contact;
-	private final Operation	operationType;
+	private final Operation operationType;
 
 	private static final long serialVersionUID = -1166652868189511553L;
 
@@ -50,17 +49,10 @@ public class ContactOperationEvent implements Event<User> {
 	 * @since Envoy Common v0.2-alpha
 	 */
 	public ContactOperationEvent(User contact, Operation operationType) {
-		this.contact		= contact;
-		this.operationType	= operationType;
+		super(contact);
+		this.operationType = operationType;
 	}
 
-	/**
-	 * @return the user to perform an operation on
-	 * @since Envoy Common v0.2-alpha
-	 */
-	@Override
-	public User get() { return contact; }
-
 	/**
 	 * @return the type of operation to perform
 	 * @since Envoy Common v0.2-alpha

src/main/java/envoy/event/ContactSearchRequest.java

@@ -10,9 +10,7 @@ package envoy.event;
  * @author Maximilian Käfer
  * @since Envoy Common v0.2-alpha
  */
-public class ContactSearchRequest implements Event<String> {
-
-	private final String searchPhrase;
+public class ContactSearchRequest extends Event<String> {
 
 	private static final long serialVersionUID = -7969312055630533627L;
 
@@ -22,12 +20,5 @@ public class ContactSearchRequest implements Event<String> {
 	 * @param searchPhrase the search phrase to use in the contact search
 	 * @since Envoy Common v0.2-alpha
 	 */
-	public ContactSearchRequest(String searchPhrase) { this.searchPhrase = searchPhrase; }
-
-	/**
-	 * @return the search phrase
-	 * @since Envoy Common v0.2-alpha
-	 */
-	@Override
-	public String get() { return searchPhrase; }
+	public ContactSearchRequest(String searchPhrase) { super(searchPhrase); }
 }

src/main/java/envoy/event/ContactSearchResult.java

@@ -0,0 +1,28 @@
+package envoy.event;
+
+import java.util.List;
+
+import envoy.data.User;
+
+/**
+ * Contains a list of {@link User}s for which a search was performed.<br>
+ * <br>
+ * Project: <strong>envoy-common</strong><br>
+ * File: <strong>ContactSearchResult.java</strong><br>
+ * Created: <strong>11 Feb 2020</strong><br>
+ *
+ * @author Kai S. K. Engelbart
+ * @since Envoy Common v0.2-alpha
+ */
+public class ContactSearchResult extends Event<List<User>> {
+
+	private static final long serialVersionUID = -8934154116102031561L;
+
+	/**
+	 * Creates an instance of {@link ContactSearchResult}.
+	 *
+	 * @param users the users found during the search
+	 */
+	public ContactSearchResult(List<User> users) { super(users); }
+
+}

src/main/java/envoy/event/Event.java

@@ -11,10 +11,36 @@ import java.io.Serializable;
  * @param <T> the type of the Event
  * @since Envoy v0.2-alpha
  */
-public interface Event<T> extends Serializable {
+public abstract class Event<T> implements Serializable {
+
+	protected final T value;
+
+	private static final long serialVersionUID = 4673659457380399167L;
+
+	protected Event(T value) { this.value = value; }
 
 	/**
 	 * @return the data associated with this event
 	 */
-	default T get() { return null; }
+	public T get() { return value; }
+
+	@Override
+	public String toString() { return String.format("%s[value=%s]%n", this.getClass().getSimpleName(), value); }
+
+	/**
+	 * Serves as a super class for events that do not carry a value.<br>
+	 * <br>
+	 * Project: <strong>envoy-common</strong><br>
+	 * File: <strong>Event.java</strong><br>
+	 * Created: <strong>11 Feb 2020</strong><br>
+	 *
+	 * @author Kai S. K. Engelbart
+	 * @since Envoy Common v0.2-alpha
+	 */
+	public static abstract class Valueless extends Event<Void> {
+
+		private static final long serialVersionUID = -9019362144094097997L;
+
+		protected Valueless() { super(null); }
+	}
 }

src/main/java/envoy/event/HandshakeRejectionEvent.java

@@ -11,9 +11,7 @@ package envoy.event;
  * @author Kai S. K. Engelbart
  * @since Envoy Common v0.3-alpha
  */
-public class HandshakeRejectionEvent implements Event<String> {
-
-	private final String reason;
+public class HandshakeRejectionEvent extends Event<String> {
 
 	private static final long serialVersionUID = -8723270093452609197L;
 
@@ -22,7 +20,7 @@ public class HandshakeRejectionEvent implements Event<String> {
 	 *
 	 * @since Envoy Common v0.3-alpha
 	 */
-	public HandshakeRejectionEvent() { this(""); }
+	public HandshakeRejectionEvent() { super(""); }
 
 	/**
 	 * Creates an instance of {@link HandshakeRejectionEvent}.
@@ -30,12 +28,5 @@ public class HandshakeRejectionEvent implements Event<String> {
 	 * @param reason the reason why the handshake was rejected
 	 * @since Envoy Common v0.3-alpha
 	 */
-	public HandshakeRejectionEvent(String reason) { this.reason = reason; }
-
-	/**
-	 * @return the reason why the handshake was rejected
-	 * @since Envoy Common v0.3-alpha
-	 */
-	@Override
-	public String get() { return reason; }
+	public HandshakeRejectionEvent(String reason) { super(""); }
 }

src/main/java/envoy/event/IdGeneratorRequest.java

@@ -11,7 +11,7 @@ package envoy.event;
  * @author Kai S. K. Engelbart
  * @since Envoy Common v0.3-alpha
  */
-public class IdGeneratorRequest implements Event<Void> {
+public class IdGeneratorRequest extends Event.Valueless {
 
 	private static final long serialVersionUID = 1431107413883364583L;
 }

src/main/java/envoy/event/MessageStatusChangeEvent.java

@@ -12,10 +12,9 @@ import envoy.data.Message;
  * @author Kai S. K. Engelbart
  * @since Envoy Common v0.2-alpha
  */
-public class MessageStatusChangeEvent implements Event<Message.MessageStatus> {
+public class MessageStatusChangeEvent extends Event<Message.MessageStatus> {
 
 	private final long					id;
-	private final Message.MessageStatus	status;
 	private final Date					date;
 
 	private static final long serialVersionUID = 4566145392192761313L;
@@ -30,8 +29,8 @@ public class MessageStatusChangeEvent implements Event<Message.MessageStatus> {
 	 * @since Envoy Common v0.2-alpha
 	 */
 	public MessageStatusChangeEvent(long id, Message.MessageStatus status, Date date) {
+		super(status);
 		this.id		= id;
-		this.status	= status;
 		this.date	= date;
 	}
 
@@ -43,13 +42,6 @@ public class MessageStatusChangeEvent implements Event<Message.MessageStatus> {
 	 */
 	public MessageStatusChangeEvent(Message message) { this(message.getId(), message.getStatus(), new Date()); }
 
-	/**
-	 * @return the status of the {@link Message} this event is related to
-	 * @since Envoy Common v0.2-alpha
-	 */
-	@Override
-	public Message.MessageStatus get() { return status; }
-
 	/**
 	 * @return the ID of the {@link Message} this event is related to
 	 * @since Envoy Common v0.2-alpha
@@ -63,5 +55,5 @@ public class MessageStatusChangeEvent implements Event<Message.MessageStatus> {
 	public Date getDate() { return date; }
 
 	@Override
-	public String toString() { return String.format("MessageStatusChangeEvent[id=%d,status=%s,date=%s]", id, status, date); }
+	public String toString() { return String.format("MessageStatusChangeEvent[id=%d,status=%s,date=%s]", id, value, date); }
 }

src/main/java/envoy/event/UserStatusChangeEvent.java

@@ -11,10 +11,9 @@ import envoy.data.User.UserStatus;
  * @author Leon Hofmeister
  * @since Envoy Common v0.2-alpha
  */
-public class UserStatusChangeEvent implements Event<UserStatus> {
+public class UserStatusChangeEvent extends Event<UserStatus> {
 
-	private final long				id;
-	private final User.UserStatus	status;
+	private final long id;
 
 	private static final long serialVersionUID = 4566145392192761313L;
 
@@ -27,8 +26,8 @@ public class UserStatusChangeEvent implements Event<UserStatus> {
 	 * @since Envoy Common v0.2-alpha
 	 */
 	public UserStatusChangeEvent(long id, User.UserStatus status) {
-		this.id		= id;
-		this.status	= status;
+		super(status);
+		this.id = id;
 	}
 
 	/**
@@ -39,13 +38,6 @@ public class UserStatusChangeEvent implements Event<UserStatus> {
 	 */
 	public UserStatusChangeEvent(User user) { this(user.getId(), user.getStatus()); }
 
-	/**
-	 * @return the status of the {@link User} this event is related to
-	 * @since Envoy Common v0.2-alpha
-	 */
-	@Override
-	public User.UserStatus get() { return status; }
-
 	/**
 	 * @return the ID of the {@link User} this event is related to
 	 * @since Envoy Common v0.2-alpha
@@ -53,5 +45,5 @@ public class UserStatusChangeEvent implements Event<UserStatus> {
 	public long getId() { return id; }
 
 	@Override
-	public String toString() { return String.format("UserStatusChangeEvent[id=%d,status=%s]", id, status); }
+	public String toString() { return String.format("UserStatusChangeEvent[id=%d,status=%s]", id, value); }
 }