From bd2b2b73cff3e8cb4a697c43401170bf055bb62d Mon Sep 17 00:00:00 2001
From: Andrew Dunham <andrew@du.nham.ca>
Date: Tue, 14 Apr 2015 19:11:39 -0700
Subject: [PATCH] Fix Err fallout for graph/mongo iterator

---
 graph/mongo/iterator.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/graph/mongo/iterator.go b/graph/mongo/iterator.go
index bdd3bab..bbe1b4f 100644
--- a/graph/mongo/iterator.go
+++ b/graph/mongo/iterator.go
@@ -39,6 +39,7 @@ type Iterator struct {
 	constraint bson.M
 	collection string
 	result     graph.Value
+	err        error
 }
 
 func NewIterator(qs *QuadStore, collection string, d quad.Direction, val graph.Value) *Iterator {
@@ -137,6 +138,7 @@ func (it *Iterator) Next() bool {
 	if !found {
 		err := it.iter.Err()
 		if err != nil {
+			it.err = err
 			glog.Errorln("Error Nexting Iterator: ", err)
 		}
 		return false
@@ -148,6 +150,10 @@ func (it *Iterator) Next() bool {
 	return true
 }
 
+func (it *Iterator) Err() error {
+	return it.err
+}
+
 func (it *Iterator) ResultTree() *graph.ResultTree {
 	return graph.NewResultTree(it.Result())
 }