Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / request / PossibleActiveVariableFromResource.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/PossibleActiveVariableFromResource.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/PossibleActiveVariableFromResource.java
new file mode 100644 (file)
index 0000000..46aecb6
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/PossibleActiveVariableFromResource.java
@@ -0,0 +1,33 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2014 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.ResourceRead;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.db.layer0.variable.Variables;\r
+\r
+public class PossibleActiveVariableFromResource extends ResourceRead<Variable> {\r
+\r
+    public PossibleActiveVariableFromResource(Resource configurationResource) {\r
+        super(configurationResource);\r
+    }\r
+\r
+    @Override\r
+    public Variable perform(ReadGraph graph) throws DatabaseException {\r
+        Variable v = Variables.getPossibleVariable(graph, resource);\r
+        return v != null ? graph.sync(new PossibleActiveVariableFromVariable(v)) : null;\r
+    }\r
+\r
+}\r