neo4j

问题 I need to import a CSV file and create a node from each record. I am using APOC because supposedly I can use a column in the CSV file to define each node type as the nodes are created. This doesn't work: CALL apoc.load.csv('FILE:///C:/Temp/Test/Test/Neo4jTest/import/Neo4j_AttributeProvenance.csv',{sep:","}) YIELD map CALL apoc.create.node(['map.AttributeName'], {key:['map.NodeID']}) return count(*) This is the error: Procedure call inside a query does not support naming results implicitly

问题 I'm currently trying to set up a streaming connection between a Neo4j DB and Gephi. I use then Apoc with apoc.gephi.add. match path = (p:Person)--(a:Address) call apoc.gephi.add(null, 'workspace1', path) yield nodes, relationships return nodes, relationships limit 20 But I have a problem with this, whom I don't understand the cause. my execution result So Neo4j saying me that I don't have property with propertyKey="name". I tested the query on a movie DB previously and it worked, but there is

问题 I followed the instructions at the following links, however, when I run my program and go to http://localhost:7474/ the webpage of the web admin is not available. How to connect to a locally installed neo4j server using Java Neo4j Hello World Tutorial and webadmin Wrapping server bootstrapper is deprecated, what is the alternative? http://devender.wordpress.com/2011/10/17/neo4j-running-embedded-server-with-webconsole/ http://www.markhneedham.com/blog/2013/06/19/neo4j

问题 This is similar to Merge existing records in neo4j, remove duplicates, keep relationships, except that the nodes I want to merge have 0-2 relationships I want to keep. Take the graph generated by: create (:Person {name:"Bob"})-[:RELATED_TO]->(:Person {name:"Jane"})-[:FRIENDS_WITH]->(:Person {name:"Tim"})<-[:FRIENDS_WITH]-(:Person {name:"Jane"}), (:Person {name:"Sally"})-[:RELATED_TO]->(:Person {name:"Jane"}) I want to merge the duplicate Jane nodes, preserving the RELATED_TO and FRIENDS_WITH

问题 I have a database of existing nodes and would like to add in additional relationships from a CSV file which looks like this: stype,sname,sver,rel,dtype,dname,dver A,aname,1.1,FRIEND,A,bname,2.2 B,bbb,1.2,ENEMY,A,bname,2.2 My LOAD CSV looks like this. The intent is to match two existing nodes then link with the values in the CSV: LOAD CSV WITH HEADERS FROM "file:///c:/workspace/neo/demo.csv" as line MATCH (s:line.stype {name:line.sname,version:line.sver}), (d:line.dtype {name:line.dname

问题 I'm trying to implement a TransactionEventHandler like the one used in neo4j-versioning in order to create a time-machine style, versioned Neo4j database, now using Neo4j 2.x. It fails with the following infinite stack trace: javax.transaction.SystemException: TM has encountered some problem, please perform necessary action (tx recovery/restart) at org.neo4j.kernel.impl.transaction.TxManager.assertTmOk(TxManager.java:349) at org.neo4j.kernel.impl.transaction.TxManager.setRollbackOnly

问题 I'm trying to run the Hetionet v1.0 docker container mentioned in this SO post. I've setup a digitalocean droplet with Docker I ran docker pull dhimmel/hetionet and it worked Now I run docker run dhimmel/hetionet and the following happens (and never returns to the interactive shell prompt). If that completed successfully I think the last thing I'm supposed to do is run sh ~/run-docker.sh . Furthermore nothing is live at my droplet's ip_address:7474. The error in the screenshot above looks a

问题 I'm trying to connect to my newly setup neo4j This is how I have configured my neo4j.conf file: # With default configuration Neo4j only accepts local connections. # To accept non-local connections, uncomment this line: dbms.connectors.default_listen_address=0.0.0.0 # You can also choose a specific network interface, and configure a non-default # port for each connector, by setting their individual listen_address. # The address at which this server can be reached by its clients. This may be

问题 How to export including relationships? I've found that executing the default query MATCH (n) RETURN n Does return what I need graphically including the relationships between nodes (AUTO-COMPLETE switched on). I see my nodes and their relationship. But when I save it either CVS or JSON it does not includes the relationships. Any idea how can I do it? 回答1: This is how you'd get all the nodes and their outgoing relationships, if any. MATCH (n) OPTIONAL MATCH (n)-[r]->() RETURN n, r; Each

问题 I am building an app that give users the ability to construct there own graphs. I have been using parameters for all queries and creates. But when I want to give users the ability to create a node where they can also Label it anything they want(respecting neo4j restrictions on empty string labels). How would I parameterize this type of transaction? I tried this: .CREATE("(a:{dynamicLabel})").WithParams(new {dynamicLabel = dlabel})... But this yields a syntax error with neo. I am tempted to