--- /dev/null
+/*******************************************************************************\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.db;\r
+\r
+/**\r
+ * An object representing a single (s,p,o) statement triple in the graph.\r
+ * \r
+ * These can be stored between transactions and later used with any\r
+ * graph that has a Session with the same database.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ */\r
+public interface Statement {\r
+\r
+ Statement[] NONE = new Statement[0];\r
+\r
+ Resource getSubject();\r
+ Resource getPredicate();\r
+ Resource getObject();\r
+ \r
+ boolean isAsserted(Resource subject);\r
+\r
+}
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