X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;ds=inline;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FShellCache.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FShellCache.java;h=9da9a06093252509bf3aabd3474a113358bcc3a1;hb=9a727406f8647dffc6598ed11b7cc7bef82b38c5;hp=0000000000000000000000000000000000000000;hpb=97865d6020fd9ad90961bdf66941d35d792e6c8f;p=Sone.git
diff --git a/src/main/java/net/pterodactylus/sone/data/ShellCache.java b/src/main/java/net/pterodactylus/sone/data/ShellCache.java
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+/*
+ * Sone - ShellCache.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 .
+ */
+
+package net.pterodactylus.sone.data;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * {@link Shell}-aware cache that will replace {@link Shell}s with the real
+ * objects but not the other way around.
+ *
+ * @param
+ * The type of the cached objects
+ * @author David âBombeâ Roden
+ */
+public class ShellCache {
+
+ /** The object cache. */
+ private final Map cache = new HashMap();
+
+ /**
+ * Stores the given object in this cache. If the given object is not a
+ * {@link Shell}, it is stored. If it is a {@link Shell} it is only stored
+ * if there is no object stored for the given ID.
+ *
+ * @param id
+ * The ID of the object
+ * @param object
+ * The object to store
+ */
+ public void put(String id, T object) {
+ if (!(object instanceof Shell>) || !cache.containsKey(id)) {
+ cache.put(id, object);
+ }
+ }
+
+ /**
+ * Returns the post with the given ID.
+ *
+ * @param id
+ * The ID of the post
+ * @return The post with the given ID, or {@code null} if there is no post
+ * with the given ID
+ */
+ public T get(String id) {
+ return cache.get(id);
+ }
+
+}