fix #671: Count results during copy

Author: Burak Serdar

crud/src/main/java/com/redhat/lightblue/assoc/ep/Copy.java

@@ -44,7 +44,11 @@ public StepResult<ResultDocument> getResults(ExecutionContext ctx) {
             public Stream<ResultDocument> stream() {
                 // Create new documents for each document in the source. This will
                 // create the correct slots based on this execution block
-                return super.stream().map(d -> new ResultDocument(block, d.getDoc()));
+                return super.stream().map(d -> {
+                        if(recordResultSetSize)
+                            ctx.incMatchCount();
+                        return new ResultDocument(block, d.getDoc());
+                    });
             }
         };
     }

crud/src/main/java/com/redhat/lightblue/assoc/ep/ExecutionContext.java

@@ -55,6 +55,10 @@ public void setMatchCount(int c) {
         matchCount = c;
     }
 
+    public void incMatchCount() {
+        matchCount++;
+    }
+
     public void close() {
         executor.shutdown();
     }