X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.event%2Fsrc%2Forg%2Fsimantics%2Fevent%2Futil%2FEventUtils.java;h=c4b83aa994c3c3c9585b39f3a503fd28b9b95416;hp=bb85be21fe878143cb864547df0576043625efc3;hb=bd5bc6e45f700e755b61bd112631796631330ecb;hpb=7684baeb8bc7963700676af20db6f4a860581e46;ds=sidebyside

diff --git a/bundles/org.simantics.event/src/org/simantics/event/util/EventUtils.java b/bundles/org.simantics.event/src/org/simantics/event/util/EventUtils.java
index bb85be21f..c4b83aa99 100644
--- a/bundles/org.simantics.event/src/org/simantics/event/util/EventUtils.java
+++ b/bundles/org.simantics.event/src/org/simantics/event/util/EventUtils.java
@@ -1,10 +1,12 @@
 package org.simantics.event.util;
 
+import java.util.List;
 import java.util.UUID;
 
 import org.simantics.databoard.Bindings;
 import org.simantics.db.Resource;
 import org.simantics.db.WriteGraph;
+import org.simantics.db.common.request.PossibleTypedParent;
 import org.simantics.db.exception.DatabaseException;
 import org.simantics.event.ontology.EventResource;
 import org.simantics.layer0.Layer0;
@@ -25,5 +27,46 @@ public class EventUtils {
         graph.claimLiteral(log, EVENT.HasModificationCounter, 0, Bindings.INTEGER);
         return log;
 	}
-	
+
+    /**
+     * Bumps the modification counter value of the event log of the specified
+     * events using {@link #bumpModificationCounter(WriteGraph, Resource)}.
+     * <p>
+     * The code assumes that all events are from the same log.
+     * 
+     * @param graph
+     * @param forLogOfEvents
+     * @throws DatabaseException
+     */
+    public static void bumpModificationCounter(WriteGraph graph, List<Resource> forLogOfEvents) throws DatabaseException {
+        EventResource EVENT = EventResource.getInstance(graph);
+        for (Resource event : forLogOfEvents) {
+            Resource log = graph.syncRequest(new PossibleTypedParent(event, EVENT.EventLog));
+            if (log != null) {
+                bumpModificationCounter(graph, log);
+                return;
+            }
+        }
+    }
+
+    /**
+     * Bumps the modification counter of the specified event log by 1.
+     * 
+     * @param graph
+     * @param eventLog
+     * @return new modification counter value
+     * @throws DatabaseException
+     */
+    public static int bumpModificationCounter(WriteGraph graph, Resource eventLog) throws DatabaseException {
+        EventResource EVENT = EventResource.getInstance(graph);
+        Resource counter = graph.getPossibleObject(eventLog, EVENT.HasModificationCounter);
+        if (counter != null) {
+            Integer c = graph.getValue(counter, Bindings.INTEGER);
+            c = c == null ? 1 : c+1;
+            graph.claimValue(counter, c, Bindings.INTEGER);
+            return c;
+        }
+        return 0;
+    }
+
 }