Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils / src / org / simantics / utils / UniqueID.java

diff --git a/bundles/org.simantics.utils/src/org/simantics/utils/UniqueID.java b/bundles/org.simantics.utils/src/org/simantics/utils/UniqueID.java
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index 0000000..938d5b1
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+++ b/bundles/org.simantics.utils/src/org/simantics/utils/UniqueID.java
@@ -0,0 +1,44 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.utils;\r
+\r
+import java.util.Random;\r
+\r
+/**\r
+ * UniqueID attempts to creates unique IDs. \r
+ * @author Toni Kalajainen\r
+ * @deprecated should be removed in my opinion [Tuukka], no real use.\r
+ */\r
+public class UniqueID {\r
+    \r
+    public static final String RESTORE_PREFIX = "restore-";\r
+    \r
+    protected final static Random RANDOM = new Random(System.currentTimeMillis());\r
+    protected static long COUNTER = RANDOM.nextLong();\r
+    \r
+    public static String _createUniqueID() {\r
+        synchronized(UniqueID.class) {\r
+            Long value = COUNTER++;\r
+            Long random = RANDOM.nextLong();\r
+            return Long.toHexString(value).toUpperCase() + \r
+                   Long.toHexString(random);\r
+        }\r
+    }    \r
+\r
+    public static String createViewSiteSecondaryID(boolean restore) {\r
+        if (!restore)\r
+            return _createUniqueID();\r
+        return RESTORE_PREFIX+_createUniqueID();\r
+    }\r
+       \r
+    \r
+}\r