Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.event/src/org/simantics/event/view/handler/Delete.java b/bundles/org.simantics.event/src/org/simantics/event/view/handler/Delete.java
new file mode 100644 (file)
index 0000000..06d9a79
--- /dev/null
+++ b/bundles/org.simantics.event/src/org/simantics/event/view/handler/Delete.java
@@ -0,0 +1,90 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2011 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.event.view.handler;\r
+\r
+import java.util.HashSet;\r
+import java.util.List;\r
+import java.util.Set;\r
+\r
+import org.eclipse.core.commands.AbstractHandler;\r
+import org.eclipse.core.commands.ExecutionEvent;\r
+import org.eclipse.core.commands.ExecutionException;\r
+import org.eclipse.jface.viewers.ISelection;\r
+import org.eclipse.ui.handlers.HandlerUtil;\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.common.utils.Logger;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.SelectionHints;\r
+import org.simantics.db.service.VirtualGraphSupport;\r
+import org.simantics.event.ontology.EventResource;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.utils.datastructures.Callback;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class Delete extends AbstractHandler {\r
+\r
+    protected final String virtualGraphId;\r
+       \r
+    public Delete() {\r
+       virtualGraphId = "experiments";\r
+    }\r
+    \r
+    @Override\r
+    public Object execute(ExecutionEvent event) throws ExecutionException {\r
+        Session session = Simantics.peekSession();\r
+        if (session == null)\r
+            return null;\r
+        ISelection selection = HandlerUtil.getCurrentSelection(event);\r
+        final List<Resource> resources = ISelectionUtils.getPossibleKeys(selection, SelectionHints.KEY_MAIN, Resource.class);\r
+        final VirtualGraph vg = virtualGraphId == null ? null :\r
+            session.getService(VirtualGraphSupport.class).getWorkspacePersistent(virtualGraphId);\r
+\r
+        session.asyncRequest(new WriteRequest(vg) {\r
+            @Override\r
+            public void perform(WriteGraph graph) throws DatabaseException {\r
+               Layer0 L0 = Layer0.getInstance(graph);\r
+               EventResource EVENT = EventResource.getInstance(graph);\r
+               Set<Resource> eventLogs = new HashSet<Resource>();\r
+               for (Resource event : resources) {\r
+                       if (graph.isInstanceOf(event, EVENT.Event)) {\r
+                               Resource slice = graph.getPossibleObject(event, L0.PartOf);\r
+                               if(slice != null) {\r
+                                       Resource eventlog =     graph.getPossibleObject(slice, L0.PartOf);\r
+                               if (eventlog != null) eventLogs.add(eventlog);\r
+                               }\r
+                       }\r
+                       graph.deny( event );\r
+               }\r
+               for (Resource eventlog : eventLogs) {\r
+                       if (graph.isInstanceOf(eventlog, EVENT.EventLog))\r
+                           graph.syncRequest( new CorrectMilestoneLabelsAction(eventlog, vg) );\r
+               }\r
+            }\r
+        }, new Callback<DatabaseException>() {\r
+            @Override\r
+            public void run(DatabaseException e) {\r
+                if (e != null) Logger.defaultLogError(e);\r
+            }\r
+        });\r
+        return null;\r
+    }\r
+\r
+}\r