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社区首页 >问答首页 >规则规划器不支持调用过程(使用apoc.do.when时)

问规则规划器不支持调用过程(使用apoc.do.when时)
EN

Stack Overflow用户
提问于 2018-05-25 10:47:56
回答 1查看 173关注 0票数 0

与上一个问题How to make the Cypher request to handle those both cases without duplicating Nodes 相关

我试图使用apoc.do.when来解决这个问题，但是我得到了这个错误

我不知道怎么解决这个问题。

Neo.DatabaseError.Statement.ExecutionFailed规则规划器不支持调用过程

代码语言：javascript
复制
LOAD CSV WITH HEADERS FROM "file:///the-file-name.csv" as 
line FIELDTERMINATOR ','  
OPTIONAL MATCH (n:Region) 
WHERE  n.region contains "BLANKEMPTYVIDE" AND n.identifier= line.CODE_TER 
CALL apoc.do.when(
   n IS NULL,
  'MERGE (r:Region{region: line.TERRITOIRE}) ON CREATE SET r.description=line.TERRITOIRE ON CREATE SET r.identifier=line.CODE_TER ON CREATE SET r.id = toString(id(r)) RETURN r',
  'RETURN n AS r',
  {}) YIELD value
WITH value.r AS r,line
SET r.identifier=line.CODE_TER
SET r.description=line.TERRITOIRE
SET r.region=line.TERRITOIRE
WITH r,line
OPTIONAL MATCH (ci:City) where ci.cityName contains "BLANKEMPTYVIDE" AND ci.regionIdentifier= line.CODE_TER
CALL apoc.do.when(
   ci IS NULL,
  'MERGE (c:City {cityName:line.BRICK}) ON CREATE SET c.identifier=line.CODE_BRICK ON CREATE SET c.region=line.TERRITOIRE ON CREATE SET c.regionIdentifier=line.CODE_TER ON CREATE SET c.zip=line.CODE_BRICK ON CREATE SET c.description=line.BRICK ON CREATE SET c.id = toString(id(c)) RETURN c',
  'RETURN ci AS c',
  {}) YIELD value
WITH value.c AS c,line,r
SET c.identifier=line.CODE_BRICK 
SET c.region=line.TERRITOIRE
SET c.regionIdentifier=line.CODE_TER
SET c.zip=line.CODE_BRICK
SET c.description=line.BRICK
SET c.cityName=line.BRICK  
WITH c,r,line
MATCH (c {identifier:line.CODE_BRICK}),(r {identifier:line.CODE_TER})
CREATE UNIQUE (c)-[:IS_A_City_BELONGING_TO]->(r)
WITH c,r,line
OPTIONAL MATCH (sec:Sector) 
WHERE  sec.description contains "BLANKEMPTYVIDE" AND sec.regionIdentifier=line.CODE_TER 
CALL apoc.do.when(
   sec IS NULL,
  'MERGE (s:Sector {sectorName:line.SOUSBRICK}) ON CREATE SET s.identifier=line.CODE_SBRICK ON CREATE SET s.region=line.TERRITOIRE ON CREATE SET s.regionIdentifier=line.CODE_TER ON CREATE SET s.city=line.BRICK ON CREATE SET s.cityIdentifier=line.CODE_BRICK ON CREATE SET s.description=line.SOUSBRICK ON CREATE SET s.zip=line.SOUSBRICK ON CREATE SET s.id = toString(id(s)) RETURN s',
  'RETURN sec AS s',
  {}) YIELD value
WITH value.s AS s,line,c,r
SET s.identifier=line.CODE_SBRICK 
SET s.region=line.TERRITOIRE 
SET s.regionIdentifier=line.CODE_TER 
SET s.city=line.BRICK 
SET s.cityIdentifier=line.CODE_BRICK 
SET s.description=line.SOUSBRICK 
SET s.zip=line.SOUSBRICK 
SET s.sectorName = line.SOUSBRICK   
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(r{identifier:line.CODE_TER}) 
CREATE UNIQUE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_REGION]->(r) 
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(c{identifier:line.CODE_BRICK})
CREATE UNIQUE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_CITY]->(c)

上一个问题 How to make the Cypher request to handle those both cases without duplicating Nodes 上有--name.csv

cybersam斧头提供的更新建议

代码语言：javascript
复制
    LOAD CSV WITH HEADERS FROM "file:///the-file-name.csv" as 
line FIELDTERMINATOR ','  
with line as line
OPTIONAL MATCH (n:Region) 
WHERE  n.region contains "BLANKEMPTYVIDE" AND n.identifier= line.CODE_TER 
with n
CALL apoc.do.when(
   n IS NULL,
  'MERGE (r:Region{region: line.TERRITOIRE}) ON CREATE SET r.description=line.TERRITOIRE ON CREATE SET r.identifier=line.CODE_TER ON CREATE SET r.id = toString(id(r)) RETURN r',
  'RETURN n AS r',
  {}) YIELD value
WITH value.r AS r, line 
SET r.identifier=line.CODE_TER
SET r.description=line.TERRITOIRE
SET r.region=line.TERRITOIRE
WITH r,line
OPTIONAL MATCH (ci:City) where ci.cityName contains "BLANKEMPTYVIDE" AND ci.regionIdentifier= line.CODE_TER
CALL apoc.do.when(
   ci IS NULL,
  'MERGE (c:City {cityName:line.BRICK}) ON CREATE SET c.identifier=line.CODE_BRICK ON CREATE SET c.region=line.TERRITOIRE ON CREATE SET c.regionIdentifier=line.CODE_TER ON CREATE SET c.zip=line.CODE_BRICK ON CREATE SET c.description=line.BRICK ON CREATE SET c.id = toString(id(c)) RETURN c',
  'RETURN ci AS c',
  {}) YIELD value
WITH value.c AS c,line,r
SET c.identifier=line.CODE_BRICK 
SET c.region=line.TERRITOIRE
SET c.regionIdentifier=line.CODE_TER
SET c.zip=line.CODE_BRICK
SET c.description=line.BRICK
SET c.cityName=line.BRICK  
WITH c,r,line
MATCH (c {identifier:line.CODE_BRICK}),(r {identifier:line.CODE_TER})
MERGE (c)-[:IS_A_City_BELONGING_TO]->(r)
WITH c,r,line
OPTIONAL MATCH (sec:Sector) 
WHERE  sec.description contains "BLANKEMPTYVIDE" AND sec.regionIdentifier=line.CODE_TER 
CALL apoc.do.when(
   sec IS NULL,
  'MERGE (s:Sector {sectorName:line.SOUSBRICK}) ON CREATE SET s.identifier=line.CODE_SBRICK ON CREATE SET s.region=line.TERRITOIRE ON CREATE SET s.regionIdentifier=line.CODE_TER ON CREATE SET s.city=line.BRICK ON CREATE SET s.cityIdentifier=line.CODE_BRICK ON CREATE SET s.description=line.SOUSBRICK ON CREATE SET s.zip=line.SOUSBRICK ON CREATE SET s.id = toString(id(s)) RETURN s',
  'RETURN sec AS s',
  {}) YIELD value
WITH value.s AS s,line,c,r
SET s.identifier=line.CODE_SBRICK 
SET s.region=line.TERRITOIRE 
SET s.regionIdentifier=line.CODE_TER 
SET s.city=line.BRICK 
SET s.cityIdentifier=line.CODE_BRICK 
SET s.description=line.SOUSBRICK 
SET s.zip=line.SOUSBRICK 
SET s.sectorName = line.SOUSBRICK   
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(r{identifier:line.CODE_TER}) 
MERGE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_REGION]->(r) 
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(c{identifier:line.CODE_BRICK})
MERGE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_CITY]->(c)

当我将Create Unique替换为MERGE子句时，循环执行失败，并显示以下错误Neo.ClientError.Statement.SyntaxError: Variable not (第12行，第20列(偏移量: 469)) "WITH Valuale.r AS r，line“^.

我所做的如下所示。第一行愉快地使用了行变量，但是当循环到达(值为r，行)时，我得到了中断代码，并显示错误Neo.ClientError.Statement.SyntaxError:变量行未定义

对cybersam建议的最终更新，它工作得很好，很完美。

代码语言：javascript
复制
LOAD CSV WITH HEADERS FROM "file:///the-file-name.csv" as line 
FIELDTERMINATOR ','  
with line as line
OPTIONAL MATCH (n:Region) 
WHERE  n.region contains "BLANKEMPTYVIDE" AND n.identifier= line.CODE_TER 
WITH n, line
CALL apoc.do.when(
   n IS NULL,
  'MERGE (r:Region{region: line.TERRITOIRE}) ON CREATE SET r.description=line.TERRITOIRE ON CREATE SET r.identifier=line.CODE_TER ON CREATE SET r.id = toString(id(r)) RETURN r',
  'RETURN n AS r',
  {n: n, line: line}) YIELD value
WITH value.r AS r, line 
SET r.identifier=line.CODE_TER
SET r.description=line.TERRITOIRE
SET r.region=line.TERRITOIRE
WITH r,line
OPTIONAL MATCH (ci:City) where ci.cityName contains "BLANKEMPTYVIDE" AND ci.regionIdentifier= line.CODE_TER
CALL apoc.do.when(
   ci IS NULL,
  'MERGE (c:City {cityName:line.BRICK}) ON CREATE SET c.identifier=line.CODE_BRICK ON CREATE SET c.region=line.TERRITOIRE ON CREATE SET c.regionIdentifier=line.CODE_TER ON CREATE SET c.zip=line.CODE_BRICK ON CREATE SET c.description=line.BRICK ON CREATE SET c.id = toString(id(c)) RETURN c',
  'RETURN ci AS c',
  {ci: ci, line: line}) YIELD value
WITH value.c AS c,line,r
SET c.identifier=line.CODE_BRICK 
SET c.region=line.TERRITOIRE
SET c.regionIdentifier=line.CODE_TER
SET c.zip=line.CODE_BRICK
SET c.description=line.BRICK
SET c.cityName=line.BRICK  
WITH c,r,line
MATCH (c {identifier:line.CODE_BRICK}),(r {identifier:line.CODE_TER})
MERGE (c)-[:IS_A_City_BELONGING_TO]->(r)
WITH c,r,line
OPTIONAL MATCH (sec:Sector) 
WHERE  sec.description contains "BLANKEMPTYVIDE" AND sec.regionIdentifier=line.CODE_TER 
CALL apoc.do.when(
   sec IS NULL,
  'MERGE (s:Sector {sectorName:line.SOUSBRICK}) ON CREATE SET s.identifier=line.CODE_SBRICK ON CREATE SET s.region=line.TERRITOIRE ON CREATE SET s.regionIdentifier=line.CODE_TER ON CREATE SET s.city=line.BRICK ON CREATE SET s.cityIdentifier=line.CODE_BRICK ON CREATE SET s.description=line.SOUSBRICK ON CREATE SET s.zip=line.SOUSBRICK ON CREATE SET s.id = toString(id(s)) RETURN s',
  'RETURN sec AS s',
  {sec: sec, line: line}) YIELD value
WITH value.s AS s,line,c,r
SET s.identifier=line.CODE_SBRICK 
SET s.region=line.TERRITOIRE 
SET s.regionIdentifier=line.CODE_TER 
SET s.city=line.BRICK 
SET s.cityIdentifier=line.CODE_BRICK 
SET s.description=line.SOUSBRICK 
SET s.zip=line.SOUSBRICK 
SET s.sectorName = line.SOUSBRICK   
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(r{identifier:line.CODE_TER}) 
MERGE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_REGION]->(r) 
WITH s,c,r,line
MATCH (s {identifier:line.CODE_SBRICK}),(c{identifier:line.CODE_BRICK})
MERGE (s)-[:IS_A_SECTOR_BELONGING_TO_THAT_CITY]->(c)
csv
neo4j
load
cypher
neo4j-apoc
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2018-05-25 11:02:25

当为the rule planner was removed时，您必须使用3.2之前的neo4j版本。

您可以升级到更新版本的neo4j，或者通过以下子句开始您的查询来告诉Cypher使用成本规划器：

代码语言：javascript
复制
CYPHER planner=cost

已更新

您收到的错误消息可能具有误导性。

由于neo4j 3.2+中不再支持CREATE UNIQUE子句，因此请尝试将所有CREATE UNIQUE子句更改为使用MERGE。相关的子句已经被组织起来，可能只需要创建一件事(关系)，所以这样做应该是安全的。

如果这解决了您的问题，您应该为误导性的错误消息创建一个新的neo4j issue。

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/50520796

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