Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.event / src / org / simantics / event / view / handler / ClaimAction.java

diff --git a/bundles/org.simantics.event/src/org/simantics/event/view/handler/ClaimAction.java b/bundles/org.simantics.event/src/org/simantics/event/view/handler/ClaimAction.java
new file mode 100644 (file)
index 0000000..3e8d62c
--- /dev/null
+++ b/bundles/org.simantics.event/src/org/simantics/event/view/handler/ClaimAction.java
@@ -0,0 +1,74 @@
+package org.simantics.event.view.handler;\r
+\r
+import org.eclipse.jface.action.Action;\r
+import org.eclipse.jface.resource.ImageDescriptor;\r
+import org.simantics.Simantics;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.VirtualGraph;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.request.WriteRequest;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.service.VirtualGraphSupport;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.utils.datastructures.Callback;\r
+import org.simantics.utils.ui.ErrorLogger;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class ClaimAction extends Action {\r
+\r
+    protected final String   virtualGraphId;\r
+    protected final Resource subject;\r
+    protected final String   relationURI;\r
+    protected final Resource object;\r
+\r
+    /**\r
+     * @param label\r
+     * @param image\r
+     * @param virtualGraphId\r
+     * @param tagURI\r
+     * @param tag <code>true</code> to add tag, <code>false</code> to remove tag\r
+     * @param input\r
+     */\r
+    public ClaimAction(String label, ImageDescriptor image, String virtualGraphId, Resource subject, String relationURI, Resource object) {\r
+        super(label, image);\r
+\r
+        this.virtualGraphId = virtualGraphId;\r
+        this.subject = subject;\r
+        this.relationURI = relationURI;\r
+        this.object = object;\r
+    }\r
+\r
+    @Override\r
+    public void run() {\r
+        Session session = Simantics.peekSession();\r
+        if (session != null) {\r
+            VirtualGraph vg = virtualGraphId == null ? null :\r
+                session.getService(VirtualGraphSupport.class).getWorkspacePersistent(virtualGraphId);\r
+            session.asyncRequest(new WriteRequest(vg) {\r
+                @Override\r
+                public void perform(WriteGraph graph) throws DatabaseException {\r
+                    claim(graph);\r
+                }\r
+            }, new Callback<DatabaseException>() {\r
+                @Override\r
+                public void run(DatabaseException parameter) {\r
+                    if (parameter != null)\r
+                        ErrorLogger.defaultLogError(parameter);\r
+                }\r
+            });\r
+        }\r
+    }\r
+\r
+    public void claim(WriteGraph graph) throws DatabaseException {\r
+        Layer0 L0 = Layer0.getInstance(graph);\r
+        Resource relation = graph.getResource(relationURI);\r
+        boolean functional = graph.isInstanceOf(relation, L0.FunctionalRelation);\r
+        if (functional)\r
+            graph.deny(subject, relation);\r
+        graph.claim(subject, graph.getResource(relationURI), object);\r
+    }\r
+\r
+}\r