neo4j/cypher：字符串到映射的内联转换

这可能是显而易见的，但对我来说并非如此： 我有一个JSON对象，它有一个包含字符串化JSON的属性（不要问为什么，必须是这样） 当我解开对象并获取该属性（键）时，有没有方法转换为与密码查询内联的映射

WITH {input} AS S
UNWIND S AS stat
WITH stat.key.str as K, stat.value as value
UNWIND K as key
RETURN key, value

返回：

key value
-----------------------------------------------------------------------------------------
{"role":"consumer","ipproto":"TCP","l7proto":"tcp:80","port":80,"dir":""} 156
{"role":"consumer","ipproto":"TCP","l7proto":"tcp:443","port":443,"dir":""} 223
{"role":"consumer","ipproto":"TCP","l7proto":"MSN","port":1863,"dir":""} 106208
键值
-----------------------------------------------------------------------------------------
{role:“consumer”，“ipproto:“TCP”，“l7proto:”TCP:80”，“port:80”，“dir:”}156
{role:“consumer”，“ipproto:”TCP”，“l7proto:”TCP”，“l7proto:”TCP:443”，“port:443”，“dir:”}223
{“role:”consumer”，“ipproto:”TCP”，“l7proto:”MSN”，“port:”1863，“dir”：“}106208
是否可以解析/加载key中的字符串值以将其作为映射读取，还是必须在cypher查询之外进行转换

WITH {input} AS S
UNWIND S AS stat
WITH stat.key.str as K, stat.value as value
UNWIND K as key
RETURN key, value

抱歉-我对neo4j和cypher都不熟悉…

您需要这样做，特别是

apoc.convert.fromJsonMap（）

将其转换为cypher映射。以下是您的使用方法：

WITH {input} AS S
UNWIND S AS stat
WITH stat.key.str as K, stat.value as value
UNWIND K as key
WITH apoc.convert.fromJsonMap(key) as map, value
...