X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.event%2Fsrc%2Forg%2Fsimantics%2Fevent%2Futil%2FEventWriteData.java;fp=bundles%2Forg.simantics.event%2Fsrc%2Forg%2Fsimantics%2Fevent%2Futil%2FEventWriteData.java;h=b53957ef930370a3a45a0022f0bc04c1a67190b6;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.event/src/org/simantics/event/util/EventWriteData.java b/bundles/org.simantics.event/src/org/simantics/event/util/EventWriteData.java
new file mode 100644
index 000000000..b53957ef9
--- /dev/null
+++ b/bundles/org.simantics.event/src/org/simantics/event/util/EventWriteData.java
@@ -0,0 +1,89 @@
+package org.simantics.event.util;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Map;
+
+import org.simantics.databoard.Bindings;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.VirtualGraph;
+import org.simantics.db.WriteOnlyGraph;
+import org.simantics.db.common.uri.UnescapedChildMapOfResource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.util.Layer0Utils;
+import org.simantics.event.ontology.EventResource;
+import org.simantics.layer0.Layer0;
+import org.simantics.utils.strings.AlphanumComparator;
+
+public class EventWriteData {
+	
+	public VirtualGraph vg;
+	public Layer0 L0;
+	public Resource eventLog;
+	public Resource targetSlice;
+	public String sliceName;
+	public int counter;
+	public Resource counterResource;
+	public Resource firstSliceResource;
+	public Map<String,Resource> slices;
+	
+	public int targetPos;
+	public int targetSliceNumber;
+	
+	public EventWriteData(ReadGraph graph, Resource eventLog, VirtualGraph vg) throws DatabaseException {
+		EventResource EVENT = EventResource.getInstance(graph);
+		this.vg = vg;
+		this.L0 = Layer0.getInstance(graph);
+		this.eventLog = eventLog;
+		this.counterResource = graph.getSingleObject(eventLog, EVENT.HasModificationCounter);
+		this.counter = graph.getValue(this.counterResource, Bindings.INTEGER);  
+        int sliceNumber = this.counter / EventUtils.SLICE_SIZE;
+        this.targetSlice = Layer0Utils.getPossibleChild(graph, eventLog, ""+sliceNumber);
+        this.sliceName = (this.targetSlice != null) ? ""+sliceNumber : "";
+        this.slices = graph.syncRequest(new UnescapedChildMapOfResource(eventLog));
+	}
+	
+	public void prepareToWrite(WriteOnlyGraph graph) throws DatabaseException {
+
+		targetPos = counter % EventUtils.SLICE_SIZE;
+	    targetSliceNumber = counter / EventUtils.SLICE_SIZE;
+	    
+	    if(targetPos == 0 && !sliceName.equals(""+targetSliceNumber)) {
+	    	Layer0 L0 = graph.getService(Layer0.class);
+	    	EventResource EVENT = graph.getService(EventResource.class);
+	    	targetSlice = graph.newResource();
+	        graph.claim(targetSlice, L0.InstanceOf, null, EVENT.EventSlice);
+	        graph.addLiteral(targetSlice, L0.HasName, L0.NameOf, L0.String, ""+targetSliceNumber, Bindings.STRING);
+	        graph.claim(targetSlice, L0.PartOf, L0.ConsistsOf, eventLog);
+	        slices.put(""+targetSliceNumber, targetSlice);
+	        sliceName = ""+targetSliceNumber;
+	    }
+		
+	}
+	
+	public void written() {
+        counter++;
+	}
+	
+	public void commit(WriteOnlyGraph graph) throws DatabaseException {
+		
+        graph.claimValue(counterResource, counter, Bindings.INTEGER);
+        
+        int toRemove = Math.max(slices.size() - EventUtils.KEEPS_SLICES, 0); 
+        
+        if(toRemove > 0) {
+//        	System.err.println("toRemove with counter=" + counter);
+        	ArrayList<String> keys = new ArrayList<String>(slices.keySet());
+        	Collections.sort(keys, AlphanumComparator.COMPARATOR);
+        	for(int i=0;i<toRemove;i++) {
+//            	System.err.println("-remove " + keys.get(i));
+        		graph.deny(eventLog, L0.ConsistsOf, L0.PartOf, slices.get(keys.get(i)), vg);
+        	}
+        }
+        
+        
+        
+	}
+	
+}
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