Merge pull request 'propertly collect sum indicies' (#4) from schema-header into master

Reviewed-on: #4

index.html

@@ -179,7 +179,9 @@ var Pivot =
     {        
         for(let i=0; i<inColumnNames.length; i++)
         {
-            N.Connect(Pivot.Schema, N.Create({Label:inColumnNames[i], Index:i}), inColumnTypes[i]);
+            let columnNode = N.Create({Label:inColumnNames[i], Index:i});
+            N.Connect(Pivot.Schema, columnNode, inColumnTypes[i]);
+            N.Connect(Pivot.Schema, columnNode, "all");
         }
         Pivot.Leaves = inRows.map(r => N.Create({Row:r}));
         Pivot.Init = ()=>{};
@@ -387,20 +389,21 @@ let ElForm = props =>
 
     let used = N.Step(Pivot.Proto, "used")||[];
     let unused = N.Step(Pivot.Schema, "label").filter( columnLabel => !N.Step(columnLabel, "used", false) );
-    let indicies = used.map(node=>node.Meta.Index);
+    let indiciesPivot = used.map(node=>node.Meta.Index);
+    let indiciesSum = (N.Step(Pivot.Schema, "sum")||[]).map(n=>n.Meta.Index);
     
     var action;
-    if(indicies.length)
+    if(indiciesPivot.length)
     {
         action = h("div", null, [
             h("span", null, "Build"),
             h("button", {onClick:e=>
             {
                 N.Disconnect(Pivot.Proto, null, "used");
-                Pivot.Create(indicies, [3, 4]);
+                Pivot.Create(indiciesPivot, indiciesSum);
                 Render();
             }
-            }, indicies)
+            }, "Create Pivot")
         ]);
     }
     else