--- /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.browsing.ui;\r
+\r
+import org.simantics.browsing.ui.NodeContext.PrimitiveQueryKey;\r
+import org.simantics.browsing.ui.NodeContext.QueryKey;\r
+import org.simantics.browsing.ui.exception.NoQueryProcessorException;\r
+\r
+/**\r
+ * These methods may only be called from the UI thread of the GraphExplorer in\r
+ * use.\r
+ * \r
+ * @see {@link GraphExplorer#getThread()}\r
+ */\r
+public interface NodeQueryManager {\r
+ <T> T query(NodeContext context, QueryKey<T> key) throws NoQueryProcessorException;\r
+ <T> T query(NodeContext context, PrimitiveQueryKey<T> key) throws NoQueryProcessorException;\r
+}\r