neo4j - 如何通过 REST API 查看 Neo4j 的 DELETE 是否成功？

Question

我如何通过 REST API 查看 Neo4j 的 DELETE 是否成功？这是我的查询。

MATCH (from_user:User),(to_user:User)
WHERE from_user.id = '522fed61e4b0a1f88d599ae0' AND to_user.id = '52b9f410e4b03902bd21629e'
MATCH from_user-[r]->to_user
DELETE r

通过 REST，无论是否删除了任何内容，我都会得到以下响应。

{
    "results": [
        {
            "columns": [],
            "data": []
        }
    ],
    "errors": []
}

Answer 1

将此添加到您的 POST 正文

"includeStats":true

例如，

[
  {
    "statement": "MATCH (from_user:User),(to_user:User) WHERE from_user.id = '522fed61e4b0a1f88d599ae0' AND to_user.id = '52b9f410e4b03902bd21629e' MATCH from_user-[r]->to_user DELETE r",
    "parameters": {},
    "includeStats": true
  }
]
}

获取数据，例如

"stats" : {
    "relationships_created" : 0,
    "nodes_deleted" : 0,
    "relationship_deleted" : 0,
    "indexes_added" : 0,
    "properties_set" : 0,
    "constraints_removed" : 0,
    "indexes_removed" : 0,
    "labels_removed" : 1,
    "constraints_added" : 0,
    "labels_added" : 1,
    "nodes_created" : 0,
    "contains_updates" : true

}

背部。这适用于事务性密码端点。
如果您使用的是旧版密码端点，请参阅 http://neo4j.com/docs/2.2.1/rest-api-cypher.html#rest-api-retrieve-query-metadata