Added support for forwarding messages (#17)

* Added message forwarding capability

* added newline at EOF for any file not having one at its end

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

@@ -49,6 +49,7 @@ public class Message implements Serializable {
 	}
 
 	private final long					id, senderId, recipientId;
+	private final boolean				forwarded;
 	private final Date					creationDate;
 	private final String				text;
 	private final MessageAttachment<?>	attachment;
@@ -71,9 +72,11 @@ public class Message implements Serializable {
 	 * @param text         the text content of the message
 	 * @param attachment   the attachment of the message, if present
 	 * @param status       the current {@link MessageStatus} of the message
+	 * @param forwarded    whether this message was forwarded
 	 * @since Envoy Common v0.2-alpha
 	 */
-	Message(long id, long senderId, long recipientId, Date creationDate, String text, MessageAttachment<?> attachment, MessageStatus status) {
+	Message(long id, long senderId, long recipientId, Date creationDate, String text, MessageAttachment<?> attachment, MessageStatus status,
+			boolean forwarded) {
 		this.id				= id;
 		this.senderId		= senderId;
 		this.recipientId	= recipientId;
@@ -81,6 +84,7 @@ public class Message implements Serializable {
 		this.text			= text;
 		this.attachment		= attachment;
 		this.status			= status;
+		this.forwarded		= forwarded;
 	}
 
 	/**
@@ -188,4 +192,10 @@ public class Message implements Serializable {
 		if (status.ordinal() < this.status.ordinal()) throw new IllegalStateException("This message is moving backwards in time");
 		this.status = status;
 	}
+
+	/**
+	 * @return whether this message was forwarded
+	 * @since Envoy common v0.1-beta
+	 */
+	public boolean isForwarded() { return forwarded; }
 }

src/main/java/envoy/data/MessageBuilder.java

@@ -25,27 +25,26 @@ public class MessageBuilder {
 	private String					text;
 	private MessageAttachment<?>	attachment;
 	private Message.MessageStatus	status;
+	private boolean					forwarded;
 
 	/**
 	 * Creates an instance of {@link MessageBuilder} with all mandatory values
 	 * without defaults for the {@link Message} class.
 	 *
 	 * @param senderId    the ID of the user who sends the {@link Message}
-	 * @param recipientId the ID of the user who received the {@link Message}
+	 * @param recipientId the ID of the user who receives the {@link Message}
 	 * @param idGenerator the ID generator used to generate a unique {@link Message}
 	 *                    id
 	 * @since Envoy Common v0.2-alpha
 	 */
-	public MessageBuilder(long senderId, long recipientId, IdGenerator idGenerator) {
+	public MessageBuilder(long senderId, long recipientId, IdGenerator idGenerator) { this(senderId, recipientId, idGenerator.next()); }
-		this(senderId, recipientId, idGenerator.next());
-	}
 
 	/**
 	 * Creates an instance of {@link MessageBuilder} with all mandatory values
 	 * without defaults for the {@link Message} class.
 	 *
 	 * @param senderId    the ID of the user who sends the {@link Message}
-	 * @param recipientId the ID of the user who received the {@link Message}
+	 * @param recipientId the ID of the user who receives the {@link Message}
 	 * @param messageId   the ID of the {@link Message}
 	 * @since Envoy Common v0.2-alpha
 	 */
@@ -55,6 +54,26 @@ public class MessageBuilder {
 		id					= messageId;
 	}
 
+	/**
+	 * This constructor transforms a given {@link Message} into a new message for a
+	 * new receiver.
+	 * This makes it especially useful in the case of forwarding messages.
+	 *
+	 * @param msg         the message to copy
+	 * @param recipientId the ID of the user who receives the {@link Message}
+	 * @param idGenerator the ID generator used to generate a unique {@link Message}
+	 *                    id
+	 * @since Envoy v0.1-beta
+	 */
+	public MessageBuilder(Message msg, long recipientId, IdGenerator idGenerator) {
+		this(msg.getRecipientId(), recipientId, idGenerator.next());
+		this.attachment		= msg.getAttachment();
+		this.creationDate	= new Date();
+		this.forwarded		= true;
+		this.text			= msg.getText();
+		this.status			= MessageStatus.WAITING;
+	}
+
 	/**
 	 * Creates an instance of {@link Message} with the previously supplied values.
 	 * If a mandatory value is not set, a default value will be used instead:<br>
@@ -83,7 +102,7 @@ public class MessageBuilder {
 		if (text == null) text = "";
 		if (status == null) status = MessageStatus.WAITING;
 
-		return new Message(id, senderId, recipientId, creationDate, text, attachment, status);
+		return new Message(id, senderId, recipientId, creationDate, text, attachment, status, forwarded);
 	}
 
 	/**
@@ -126,4 +145,14 @@ public class MessageBuilder {
 		this.status = status;
 		return this;
 	}
+
+	/**
+	 * @param forwarded sets whether this message is a forwarded message or not
+	 * @return this {@link MessageBuilder}
+	 * @since Envoy Common v0.1-beta
+	 */
+	public MessageBuilder setForwarded(boolean forwarded) {
+		this.forwarded = forwarded;
+		return this;
+	}
 }