+package org.simantics.event.util;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collections;\r
+import java.util.Map;\r
+\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.VirtualGraph;\r
+import org.simantics.db.WriteOnlyGraph;\r
+import org.simantics.db.common.uri.UnescapedChildMapOfResource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.util.Layer0Utils;\r
+import org.simantics.event.ontology.EventResource;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.utils.strings.AlphanumComparator;\r
+\r
+public class EventWriteData {\r
+ \r
+ public VirtualGraph vg;\r
+ public Layer0 L0;\r
+ public Resource eventLog;\r
+ public Resource targetSlice;\r
+ public String sliceName;\r
+ public int counter;\r
+ public Resource counterResource;\r
+ public Resource firstSliceResource;\r
+ public Map<String,Resource> slices;\r
+ \r
+ public int targetPos;\r
+ public int targetSliceNumber;\r
+ \r
+ public EventWriteData(ReadGraph graph, Resource eventLog, VirtualGraph vg) throws DatabaseException {\r
+ EventResource EVENT = EventResource.getInstance(graph);\r
+ this.vg = vg;\r
+ this.L0 = Layer0.getInstance(graph);\r
+ this.eventLog = eventLog;\r
+ this.counterResource = graph.getSingleObject(eventLog, EVENT.HasModificationCounter);\r
+ this.counter = graph.getValue(this.counterResource, Bindings.INTEGER); \r
+ int sliceNumber = this.counter / EventUtils.SLICE_SIZE;\r
+ this.targetSlice = Layer0Utils.getPossibleChild(graph, eventLog, ""+sliceNumber);\r
+ this.sliceName = (this.targetSlice != null) ? ""+sliceNumber : "";\r
+ this.slices = graph.syncRequest(new UnescapedChildMapOfResource(eventLog));\r
+ }\r
+ \r
+ public void prepareToWrite(WriteOnlyGraph graph) throws DatabaseException {\r
+\r
+ targetPos = counter % EventUtils.SLICE_SIZE;\r
+ targetSliceNumber = counter / EventUtils.SLICE_SIZE;\r
+ \r
+ if(targetPos == 0 && !sliceName.equals(""+targetSliceNumber)) {\r
+ Layer0 L0 = graph.getService(Layer0.class);\r
+ EventResource EVENT = graph.getService(EventResource.class);\r
+ targetSlice = graph.newResource();\r
+ graph.claim(targetSlice, L0.InstanceOf, null, EVENT.EventSlice);\r
+ graph.addLiteral(targetSlice, L0.HasName, L0.NameOf, L0.String, ""+targetSliceNumber, Bindings.STRING);\r
+ graph.claim(targetSlice, L0.PartOf, L0.ConsistsOf, eventLog);\r
+ slices.put(""+targetSliceNumber, targetSlice);\r
+ sliceName = ""+targetSliceNumber;\r
+ }\r
+ \r
+ }\r
+ \r
+ public void written() {\r
+ counter++;\r
+ }\r
+ \r
+ public void commit(WriteOnlyGraph graph) throws DatabaseException {\r
+ \r
+ graph.claimValue(counterResource, counter, Bindings.INTEGER);\r
+ \r
+ int toRemove = Math.max(slices.size() - EventUtils.KEEPS_SLICES, 0); \r
+ \r
+ if(toRemove > 0) {\r
+// System.err.println("toRemove with counter=" + counter);\r
+ ArrayList<String> keys = new ArrayList<String>(slices.keySet());\r
+ Collections.sort(keys, AlphanumComparator.COMPARATOR);\r
+ for(int i=0;i<toRemove;i++) {\r
+// System.err.println("-remove " + keys.get(i));\r
+ graph.deny(eventLog, L0.ConsistsOf, L0.PartOf, slices.get(keys.get(i)), vg);\r
+ }\r
+ }\r
+ \r
+ \r
+ \r
+ }\r
+ \r
+}
\ No newline at end of file