Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.action.ontology / src / org / simantics / action / ontology / ActionResource.java

diff --git a/bundles/org.simantics.action.ontology/src/org/simantics/action/ontology/ActionResource.java b/bundles/org.simantics.action.ontology/src/org/simantics/action/ontology/ActionResource.java
new file mode 100644 (file)
index 0000000..9879579
--- /dev/null
+++ b/bundles/org.simantics.action.ontology/src/org/simantics/action/ontology/ActionResource.java
@@ -0,0 +1,61 @@
+package org.simantics.action.ontology;\r
+\r
+import org.simantics.db.RequestProcessor;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.request.Read;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.service.QueryControl;\r
+\r
+public class ActionResource {\r
+    \r
+    public final Resource Action;\r
+    public final Resource DropAction;\r
+        \r
+    public static class URIs {\r
+        public static final String Action = "http://www.simantics.org/Action-1.1/Action";\r
+        public static final String DropAction = "http://www.simantics.org/Action-1.1/DropAction";\r
+    }\r
+    \r
+    public static Resource getResourceOrNull(ReadGraph graph, String uri) {\r
+        try {\r
+            return graph.getResource(uri);\r
+        } catch(DatabaseException e) {\r
+            System.err.println(e.getMessage());\r
+            return null;\r
+        }\r
+    }\r
+    \r
+    public ActionResource(ReadGraph graph) {\r
+        Action = getResourceOrNull(graph, URIs.Action);\r
+        DropAction = getResourceOrNull(graph, URIs.DropAction);\r
+    }\r
+    \r
+    public static ActionResource getInstance(ReadGraph graph) {\r
+        Session session = graph.getSession();\r
+        ActionResource ret = session.peekService(ActionResource.class);\r
+        if(ret == null) {\r
+            QueryControl qc = graph.getService(QueryControl.class);\r
+            ret = new ActionResource(qc.getIndependentGraph(graph));\r
+            session.registerService(ActionResource.class, ret);\r
+        }\r
+        return ret;\r
+    }\r
+    \r
+    public static ActionResource getInstance(RequestProcessor session) throws DatabaseException {\r
+        ActionResource ret = session.peekService(ActionResource.class);\r
+        if(ret == null) {\r
+            ret = session.syncRequest(new Read<ActionResource>() {\r
+                public ActionResource perform(ReadGraph graph) throws DatabaseException {\r
+                    QueryControl qc = graph.getService(QueryControl.class);\r
+                    return new ActionResource(qc.getIndependentGraph(graph));\r
+                }\r
+            });\r
+            session.registerService(ActionResource.class, ret);\r
+        }\r
+        return ret;\r
+    }\r
+    \r
+}\r
+\r