--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
+ * 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.databoard.annotations;\r
+\r
+import java.lang.annotation.Annotation;\r
+\r
+public class OptionalImpl implements Optional {\r
+\r
+ @Override\r
+ public Class<? extends Annotation> annotationType() {\r
+ return Optional.class;\r
+ }\r
+ \r
+ @Override\r
+ public boolean equals(Object obj) {\r
+ return obj instanceof Optional;\r
+ }\r
+ \r
+ @Override\r
+ public int hashCode() {\r
+ return Optional.class.hashCode();\r
+ }\r
+\r
+}\r