-/*******************************************************************************\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.layer0.request;\r
-\r
-import org.simantics.db.ReadGraph;\r
-import org.simantics.db.Resource;\r
-import org.simantics.db.common.request.UnaryRead;\r
-import org.simantics.db.exception.DatabaseException;\r
-import org.simantics.db.layer0.variable.Variable;\r
-import org.simantics.layer0.Layer0;\r
-\r
-public class VariableIndexRoot extends UnaryRead<Variable, Resource> {\r
-\r
- public VariableIndexRoot(Variable variable) {\r
- super(variable);\r
- }\r
-\r
- @Override\r
- public Resource perform(ReadGraph graph) throws DatabaseException {\r
-\r
- Layer0 L0 = Layer0.getInstance(graph);\r
- Resource r = parameter.getPossibleRepresents(graph);\r
- if(r != null) {\r
- if(graph.isInstanceOf(r, L0.IndexRoot)) return r;\r
- }\r
- \r
- Variable parent = parameter.getParent(graph);\r
- if(parent != null) return graph.sync(new VariableIndexRoot(parent));\r
- else return null;\r
-\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * 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.db.layer0.request;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.request.UnaryRead;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.variable.Variable;
+import org.simantics.layer0.Layer0;
+
+public class VariableIndexRoot extends UnaryRead<Variable, Resource> {
+
+ public VariableIndexRoot(Variable variable) {
+ super(variable);
+ }
+
+ @Override
+ public Resource perform(ReadGraph graph) throws DatabaseException {
+
+ Layer0 L0 = Layer0.getInstance(graph);
+ Resource r = parameter.getPossibleRepresents(graph);
+ if(r != null) {
+ if(graph.isInstanceOf(r, L0.IndexRoot)) return r;
+ }
+
+ Variable parent = parameter.getParent(graph);
+ if(parent != null) return graph.sync(new VariableIndexRoot(parent));
+ else return null;
+
+ }
+
+}