From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Thu, 14 Oct 2010 11:39:50 +0000 (+0200)
Subject: Add interface for not-yet-created objects.
X-Git-Tag: 0.1-RC1~400
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=d785d5fa0c40faf405f5dbb65646aec62d9fa881;p=Sone.git

Add interface for not-yet-created objects.
---

diff --git a/src/main/java/net/pterodactylus/sone/data/Shell.java b/src/main/java/net/pterodactylus/sone/data/Shell.java
new file mode 100644
index 0000000..9f1fc9b
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/data/Shell.java
@@ -0,0 +1,47 @@
+/*
+ * Sone - Shell.java - Copyright © 2010 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.data;
+
+/**
+ * Marker interface for classes that are only empty shells for objects that have
+ * not yet been retrieved from Freenet.
+ *
+ * @param <T>
+ *            The type of object that is shelled
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public interface Shell<T> {
+
+	/**
+	 * Returns whether the shelled object can be unshelled now.
+	 *
+	 * @return {@code true} if {@link #getShelled()} can return the shelled
+	 *         object, {@code false} otherwise
+	 */
+	public boolean canUnshell();
+
+	/**
+	 * Returns the object that is shelled. Returns {@code null} if the real
+	 * object has not yet been retrieved.
+	 *
+	 * @return The shelled object, or {@code null} if the shelled object is not
+	 *         retrieved yet
+	 */
+	public T getShelled();
+
+}