From 7c2c137f6fa9326787ed36915000b2dad0d0b923 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E7=81=AB=E4=BA=AE?= <454654590@qq.com>
Date: Wed, 6 Nov 2019 13:25:24 +0800
Subject: [PATCH] Improve empty parentId handling logic in
 FetchJsonTreeCommandHandler (#1140)

- Treat as root node when parentId is empty string in FetchJsonTreeCommandHandler
---
 .../alibaba/csp/sentinel/dashboard/domain/ResourceTreeNode.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/domain/ResourceTreeNode.java b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/domain/ResourceTreeNode.java
index fa2e7ca9..be576160 100755
--- a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/domain/ResourceTreeNode.java
+++ b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/domain/ResourceTreeNode.java
@@ -56,7 +56,7 @@ public class ResourceTreeNode {
             ResourceTreeNode node = fromNodeVo(vo);
             map.put(node.id, node);
             // real root
-            if (node.parentId == null) {
+            if (node.parentId == null || node.parentId.isEmpty()) {
                 root = node;
             } else if (map.containsKey(node.parentId)) {
                 map.get(node.parentId).children.add(node);