no message

git-svn-id: http://svn.igniterealtime.org/svn/repos/messenger/trunk@267 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/messenger/Component.java

+package org.jivesoftware.messenger;
+
+public interface Component {
+
+    void processPacket(XMPPPacket packet);
+}

src/java/org/jivesoftware/messenger/ComponentManager.java

+package org.jivesoftware.messenger;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.jivesoftware.util.StringUtils;
+
+public class ComponentManager {
+    private Map<String, Component> components = new HashMap<String, Component>();
+
+    static private ComponentManager singleton;
+    private final static Object LOCK = new Object();
+
+
+    /**
+     * Returns the singleton instance of <CODE>ComponentManager</CODE>,
+     * creating it if necessary.
+     * <p/>
+     *
+     * @return the singleton instance of <Code>UserManager</CODE>
+     */
+    public static ComponentManager getInstance() {
+        // Synchronize on LOCK to ensure that we don't end up creating
+        // two singletons.
+        synchronized (LOCK) {
+            if (null == singleton) {
+                ComponentManager controller = new ComponentManager();
+                singleton = controller;
+                return controller;
+            }
+        }
+        return singleton;
+    }
+
+    private ComponentManager() {
+    }
+
+    public void addComponent(String jid, Component component){
+        jid = validateJID(jid);
+        components.put(jid, component);
+    }
+
+    public void removeComponent(String jid){
+        components.remove(validateJID(jid));
+    }
+
+    public Component getComponent(String jid){
+        if(components.containsKey(validateJID(jid))){
+            return components.get(validateJID(jid));
+        }
+        else {
+            String serverName = StringUtils.parseServer(validateJID(jid));
+            int index = serverName.indexOf(".");
+            if(index != -1){
+                String serviceName = serverName.substring(0, index);
+                jid = serviceName;
+            }
+        }
+        return components.get(validateJID(jid));
+    }
+
+    private String validateJID(String jid){
+        jid = jid.trim().toLowerCase();
+        return jid;
+    }
+}