Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.graph.impl / src / org / simantics / browsing / ui / graph / impl / IsEnumeratedValue.java

diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/IsEnumeratedValue.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/IsEnumeratedValue.java
new file mode 100644 (file)
index 0000000..2bccd30
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/IsEnumeratedValue.java
@@ -0,0 +1,50 @@
+/*******************************************************************************\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.graph.impl;\r
+\r
+import java.util.Set;\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.layer0.Layer0;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class IsEnumeratedValue extends ResourceRead<Boolean> {\r
+\r
+    public IsEnumeratedValue(Resource resource) {\r
+        super(resource);\r
+    }\r
+\r
+    @Override\r
+    public Boolean perform(ReadGraph graph) throws DatabaseException {\r
+        return Boolean.valueOf(isEnumeratedValue(graph, resource));\r
+    }\r
+\r
+    public static boolean isEnumeratedValue(ReadGraph graph, Resource resource) throws DatabaseException {\r
+        Set<Resource> types = graph.getTypes(resource);\r
+        //if (types.contains(graph.getBuiltins().Boolean))\r
+        //    return true;\r
+        for (Resource type : types)\r
+            if (isEnumeration(graph, type))\r
+                return true;\r
+        return false;\r
+    }\r
+\r
+    public static boolean isEnumeration(ReadGraph graph, Resource type) throws DatabaseException {\r
+        return graph.hasStatement(type, Layer0.getInstance(graph).Enumeration, type);\r
+    }\r
+\r
+}\r