Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.color.ontology / src / org / simantics / color / ColorResource.java

diff --git a/bundles/org.simantics.color.ontology/src/org/simantics/color/ColorResource.java b/bundles/org.simantics.color.ontology/src/org/simantics/color/ColorResource.java
new file mode 100644 (file)
index 0000000..2247c76
--- /dev/null
+++ b/bundles/org.simantics.color.ontology/src/org/simantics/color/ColorResource.java
@@ -0,0 +1,58 @@
+package org.simantics.color;\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 ColorResource {\r
+    \r
+    public final Resource RGB;\r
+        \r
+    public static class URIs {\r
+        public static final String RGB = "http://www.simantics.org/Color-1.1/RGB";\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 ColorResource(ReadGraph graph) {\r
+        RGB = getResourceOrNull(graph, URIs.RGB);\r
+    }\r
+    \r
+    public static ColorResource getInstance(ReadGraph graph) {\r
+        Session session = graph.getSession();\r
+        ColorResource ret = session.peekService(ColorResource.class);\r
+        if(ret == null) {\r
+            QueryControl qc = graph.getService(QueryControl.class);\r
+            ret = new ColorResource(qc.getIndependentGraph(graph));\r
+            session.registerService(ColorResource.class, ret);\r
+        }\r
+        return ret;\r
+    }\r
+    \r
+    public static ColorResource getInstance(RequestProcessor session) throws DatabaseException {\r
+        ColorResource ret = session.peekService(ColorResource.class);\r
+        if(ret == null) {\r
+            ret = session.syncRequest(new Read<ColorResource>() {\r
+                public ColorResource perform(ReadGraph graph) throws DatabaseException {\r
+                    QueryControl qc = graph.getService(QueryControl.class);\r
+                    return new ColorResource(qc.getIndependentGraph(graph));\r
+                }\r
+            });\r
+            session.registerService(ColorResource.class, ret);\r
+        }\r
+        return ret;\r
+    }\r
+    \r
+}\r
+\r