Variable optimizations for documents (Simupedia)

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / variable / ProxyVariableSupport.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/ProxyVariableSupport.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/ProxyVariableSupport.java
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+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/ProxyVariableSupport.java
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+/*******************************************************************************
+ * Copyright (c) 2018 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:
+ *     Semantum Oy - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.layer0.variable;
+
+import org.simantics.db.ReadGraph;
+
+/**
+ * Allows attaching a variable under another one to create custom hierarchies
+ * from existing variables.
+ * 
+ * @author Antti Villberg
+ * @since 1.36.0
+ */
+public interface ProxyVariableSupport {
+
+    Variable attachTo(ReadGraph graph, Variable parent);
+    Variable attachToRenamed(ReadGraph graph, Variable parent, String name);
+
+}