我需要运行带有1000个对象的查询。使用/batch终结点,我可以使它正常工作,但是太慢了(30秒处理300个项目)。
/batch
因此,我正在尝试与该文档页面中所述的方法相同:http : //docs.neo4j.org/chunked/2.0.1/rest-api-cypher.html#rest-api-create-mutiple- nodes-with -属性
将此JSON发布到 http://localhost:7474/db/data/cypher
http://localhost:7474/db/data/cypher
{ "params": { "props": [ { "_user_id": "177032492760", "_user_name": "John" }, { "_user_id": "177032492760", "_user_name": "Mike" }, { "_user_id": "100007496328", "_user_name": "Wilber" } ] }, "query": "MERGE (user:People {id:{_user_id}}) SET user.id = {_user_id}, user.name = {_user_name} " }
问题是我收到此错误:
{ message: 'Expected a parameter named _user_id', exception: 'ParameterNotFoundException', fullname: 'org.neo4j.cypher.ParameterNotFoundException', stacktrace: ...
也许这仅适用于CREATE查询,如docs页面所示?
将FOREACH和MERGE与ON CREATE SET结合使用:
FOREACH (p in {props} | MERGE (user:People {id:{p._user_id}}) ON CREATE user.name = {p._user_name})
{ "params": { "props": [ { "_user_id": "177032492760", "_user_name": "John" }, { "_user_id": "177032492760", "_user_name": "Mike" }, { "_user_id": "100007496328", "_user_name": "Wilber" } ] }, "query": "FOREACH (p in {props} | MERGE (user:People {id:{p._user_id}}) ON CREATE user.name = {p._user_name}) " }