[I] K-neighbor API (POST, Advanced Version) 如何根据节点字符串类型属性筛选节点 [incubator-hugegraph]

[via GitHub]

ChoelWu opened a new issue, #2693:
URL: https://github.com/apache/incubator-hugegraph/issues/2693

   ### Feature Description (功能描述)
   
   如何根据节点字符串类型属性筛选节点，例如city属性为Hongkong
   请求内容设置如下后
   "label": "person",
       "properties": {
           "city": "P.eq('Hongkong')"
        }
   报错：
   {
       "exception": "class org.apache.hugegraph.HugeException",
       "message": "Invalid value ''Hongkong'', expect a number",
       "cause": "org.apache.hugegraph.HugeException: Can't read json: 
Unexpected character (''' (code 39)): expected a valid value (JSON String, 
Number, Array, Object or token 'null', 'true' or 'false')\n at [Source: 
(String)\"'Hongkong'\"; line: 1, column: 2]"
   }
   此外尝试了"city": "P.eq(\"Hongkong\")" 还有 "city": "P.eq(Hongkong)"，均无法筛选节点并报错


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