Still working for multiple readers

[simantics/platform.git] / bundles / org.simantics.db.impl / src / org / simantics / db / impl / query / IntSet.java

diff --git a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/IntSet.java b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/IntSet.java
index 7c32b8e593e19ea7757355d3c1768c0757abe7c1..813677d53265d36079395fd471f160e69237680b 100644 (file)
--- a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/IntSet.java
+++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/IntSet.java
@@ -18,9 +18,12 @@ import java.util.Collection;
 import java.util.Iterator;
 import java.util.Set;
 
+import org.simantics.db.ReadGraph;
 import org.simantics.db.Resource;
 import org.simantics.db.ResourceSet;
+import org.simantics.db.exception.DatabaseException;
 import org.simantics.db.impl.ResourceImpl;
+import org.simantics.db.impl.graph.ReadGraphImpl;
 import org.simantics.db.impl.support.ResourceSupport;
 
 
@@ -40,12 +43,12 @@ final public class IntSet implements ResourceSet {
     
     private static final Object[] EMPTY_ARRAY = new Object[0];
 
-    public IntSet() {
-        support = null;
-        data = null;
-        sizeOrData = NO_DATA;
+    public static IntSet EMPTY = new IntSet();
+    
+    private IntSet() {
+       support = null;
     }
-
+    
     public IntSet(QuerySupport support) {
         this.support = support.getSupport();
         data = null;
@@ -286,5 +289,17 @@ final public class IntSet implements ResourceSet {
             }
         }
     }
+    
+    public void forEach(ReadGraphImpl graph, IntProcedure procedure) throws DatabaseException {
+        if(data != null) {
+            for(int i=0;i<sizeOrData;++i)
+               procedure.execute(graph, data[i]);
+        }
+        else if(sizeOrData == NO_DATA) {
+        } else {
+               procedure.execute(graph, sizeOrData);
+        }
+        procedure.finished(graph);
+    }
 
 }
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