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diff --git a/bundles/org.simantics.ui/src/org/simantics/ui/workbench/IResourceEditorInput2.java b/bundles/org.simantics.ui/src/org/simantics/ui/workbench/IResourceEditorInput2.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.ui.workbench;
+
+import org.eclipse.ui.IEditorInput;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.variable.Variable;
+
+/**
+ * @author Tuukka Lehtonen
+ * 
+ * @see ResourceEditorInput2
+ */
+public interface IResourceEditorInput2 extends IEditorInput, IResourceEditorInput {
+
+    /**
+	 * This is a base URI, not a model URI but the name of the method cannot be
+	 * changed now. If {@link #getRVI()} returns <code>null</code>, this URI
+	 * should be used as such to get a {@link Variable} view of the input.
+	 * 
+	 * @return URI of the model the input is related to or <code>null</code> if
+	 *         no model is available
+	 */
+//    String getModelURI();
+
+    Resource getModel(ReadGraph graph);
+    
+    /**
+	 * @return a {@link Variable} Relative Variable Identifier (RVI). May be an
+	 *         empty string or <code>null</code> if {@link #getModelURI()}
+	 *         should be interpreted as the absolute {@link Variable} URI of the
+	 *         input.
+	 */
+    String getRVI();
+
+    /**
+     * Adapt this editor input into a {@link Variable} outside of a database
+     * transaction.
+     * 
+     * @return
+     * @throws DatabaseException if variable adaption fails
+     * @since 1.6
+     */
+    Variable getVariable() throws DatabaseException;
+
+    /**
+     * Adapt this editor input into a {@link Variable} within a database
+     * transaction.
+     * 
+     * @param graph
+     * @return
+     * @throws DatabaseException if variable adaption fails
+     * @since 1.6
+     */
+    Variable getVariable(ReadGraph graph) throws DatabaseException;
+
+}