wildfire chat server source initial submit

broker/src/main/java/io/moquette/persistence/GroupLoader.java

@@ -0,0 +1,68 @@
+/*
+ * This file is part of the Wildfire Chat package.
+ * (c) Heavyrain2012 <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+package io.moquette.persistence;
+
+import cn.wildfirechat.proto.WFCMessage;
+import com.hazelcast.core.MapLoader;
+import io.moquette.server.Server;
+
+import java.util.Collection;
+import java.util.Map;
+
+public class GroupLoader implements MapLoader<String, WFCMessage.GroupInfo> {
+    private DatabaseStore getDatabaseStore() {
+        return Server.getServer().getStore().messagesStore().getDatabaseStore();
+    }
+
+    /**
+     * Loads the value of a given key. If distributed map doesn't contain the value
+     * for the given key then Hazelcast will call implementation's load (key) method
+     * to obtain the value. Implementation can use any means of loading the given key;
+     * such as an O/R mapping tool, simple SQL or reading a file etc.
+     *
+     * @param key@return value of the key, value cannot be null
+     */
+    @Override
+    public WFCMessage.GroupInfo load(String key) {
+        return getDatabaseStore().getPersistGroupInfo(key);
+    }
+
+    /**
+     * Loads given keys. This is batch load operation so that implementation can
+     * optimize the multiple loads.
+     * <p>
+     * For any key in the input keys, there should be a single mapping in the resulting map. Also the resulting
+     * map should not have any keys that are not part of the input keys.
+     * <p>
+     * The given collection should not contain any <code>null</code> keys.
+     * The returned Map should not contain any <code>null</code> keys or values.
+     *
+     * @param keys keys of the values entries to load
+     * @return map of loaded key-value pairs.
+     */
+    @Override
+    public Map<String, WFCMessage.GroupInfo> loadAll(Collection<String> keys) {
+        return null;
+    }
+
+    /**
+     * Loads all of the keys from the store. The returned {@link Iterable} may return the keys lazily
+     * by loading them in batches. The {@link Iterator} of this {@link Iterable} may implement the
+     * {@link Closeable} interface in which case it will be closed once iteration is over.
+     * This is intended for releasing resources such as closing a JDBC result set.
+     * <p>
+     * The returned Iterable should not contain any <code>null</code> keys.
+     *
+     * @return all the keys. Keys inside the Iterable cannot be null.
+     */
+    @Override
+    public Iterable<String> loadAllKeys() {
+        return null;
+    }
+}