Merge pull request 4thline#110 from ened/getsystemupdateid-action

added GetSystemUpdateID action for content directory

support/src/main/java/org/fourthline/cling/support/contentdirectory/callback/GetSystemUpdateID.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2013 4th Line GmbH, Switzerland
+ *
+ * The contents of this file are subject to the terms of either the GNU
+ * Lesser General Public License Version 2 or later ("LGPL") or the
+ * Common Development and Distribution License Version 1 or later
+ * ("CDDL") (collectively, the "License"). You may not use this file
+ * except in compliance with the License. See LICENSE.txt for more
+ * information.
+ *
+ * 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.
+ */
+
+package org.fourthline.cling.support.contentdirectory.callback;
+
+import org.fourthline.cling.controlpoint.ActionCallback;
+import org.fourthline.cling.model.action.ActionException;
+import org.fourthline.cling.model.action.ActionInvocation;
+import org.fourthline.cling.model.types.ErrorCode;
+
+/**
+ *
+ * @author Christian Bauer
+ */
+public abstract class GetSystemUpdateID extends ActionCallback {
+
+    public GetSystemUpdateID(org.fourthline.cling.model.meta.Service service) {
+        super(new ActionInvocation(service.getAction("GetSystemUpdateID")));
+    }
+
+    public void success(ActionInvocation invocation) {
+        boolean ok = true;
+        long id = 0;
+        try {
+            id = Long.valueOf(invocation.getOutput("Id").getValue().toString()); // UnsignedIntegerFourBytes...
+        } catch (Exception ex) {
+            invocation.setFailure(new ActionException(ErrorCode.ACTION_FAILED, "Can't parse GetSystemUpdateID response: " + ex, ex));
+            failure(invocation, null);
+            ok = false;
+        }
+        if (ok) received(invocation, id);
+    }
+
+    public abstract void received(ActionInvocation invocation, long systemUpdateID);
+
+}