From f744cc1bff979d9f493b116cf5ad40b603065be7 Mon Sep 17 00:00:00 2001
From: =?utf8?q?David=20=E2=80=98Bombe=E2=80=99=20Roden?=
 <bombe@pterodactylus.net>
Date: Wed, 12 Oct 2011 07:44:01 +0200
Subject: [PATCH] Add in-memory implementation of Sone database.

---
 .../sone/database/memory/MemorySoneDatabase.java   | 66 ++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/main/java/net/pterodactylus/sone/database/memory/MemorySoneDatabase.java

diff --git a/src/main/java/net/pterodactylus/sone/database/memory/MemorySoneDatabase.java b/src/main/java/net/pterodactylus/sone/database/memory/MemorySoneDatabase.java
new file mode 100644
index 0000000..0bdf02b
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/database/memory/MemorySoneDatabase.java
@@ -0,0 +1,66 @@
+/*
+ * Sone - MemorySoneDatabase.java - Copyright © 2011 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.database.memory;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import net.pterodactylus.sone.core.Core;
+import net.pterodactylus.sone.data.Sone;
+import net.pterodactylus.sone.database.DatabaseException;
+import net.pterodactylus.sone.database.SoneDatabase;
+import net.pterodactylus.util.validation.Validation;
+
+/**
+ * In-memory implementation of {@link SoneDatabase} that stores all its data in
+ * a {@link Map}. This is roughly equivalent to what {@link Core} does today and
+ * is mainly used while Sone is transitioning to using a real database.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class MemorySoneDatabase implements SoneDatabase {
+
+	/** The Sones. */
+	private final Map<String, Sone> sones = new HashMap<String, Sone>();
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Sone getSone(String id, boolean create) throws DatabaseException {
+		Validation.begin().isNotNull("Sone ID", id).check();
+		synchronized (sones) {
+			if (!sones.containsKey(id)) {
+				sones.put(id, new Sone(id));
+			}
+			return sones.get(id);
+		}
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void saveSone(Sone sone) throws DatabaseException {
+		synchronized (sones) {
+			Validation.begin().isNotNull("Sone", sone).check().is("Sone is an in-memory Sone", sones.containsKey(sone.getId())).check();
+		}
+		/* this is a no-op. */
+	}
+
+}
-- 
2.7.4