neo4j

I want to implement a unique ID property on all nodes in my database but need to apply it to existing data. I'm using Ruby to perform generate the IDS and then running the Cypher query from there. I want to avoid one query to find nodes missing the property, another to set the property on each node individually, since that would require total_nodes + 1 queries. Initially, I was thinking I could do something like this: MATCH (n:`#{label}`) WHERE NOT HAS(n.my_id) SET n.my_id = '#{gen_method}' RETURN DISTINCT(true) Of course, this wouldn't work because it would call gen_method once in Ruby and

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,version:line.dver}) CREATE (s)-[:line.rel}]->(d) RETURN COUNT(*); Am getting this error when I try to set

I have a problem in importing a very big XML file with 36196662 lines. I am trying to create a Neo4j Graph Database of this XML file with Py2neo my xml file look like that: http://imgur.com/pLylHeG and My python code to import the xml data into Neo4j is like that: from xml.dom import minidom from py2neo import Graph, Node, Relationship, authenticate from py2neo.packages.httpstream import http http.socket_timeout = 9999 import codecs authenticate("localhost:7474", "neo4j", "******") graph = Graph("http://localhost:7474/db/data/") xml_file = codecs.open("User_profilesL2T1.xml","r", encoding=

Well scenario is like this: I create a one node called counter node . Its initial value is 0 and incremented as user create its account on my website. So there are three operation happen to operate this: Read counter node value Do some logic in php . Here like +1 to previous value of counter node Write new value of counter node Now problem is, If two or more users are coming exactly same time and creating such a condition that Before first user write new value to counter node , it is being read by second user. Thus this will leave value of my 'counter node' in unstable condition. Hope you got

I installed Graphileon InterActor using Docker on Windows. The Styling Documentation says that files can be uploaded using the following command in style menu: "image": "(%).properties.file", // image as node background When starting InterActor I follow this command: You can run the InterActor image using the following command, which will also create a volume "interactor" where persistent data (the config, and files you upload to InterActor) will be stored. And type in: $ docker run -t -d -p 8000:80 --name interactor -v interactor:/persistent/ graphileon/interactor-community

I am trying to figure out the way to retrieve node by id. MATCH (n) WHERE ID(n) = {id} RETURN n , is the Cypher I used with REST interface. Now using fluent syntax of Neo4j Client for .net I cannot find the function name in Neo4J.Cypher namespace, like for instance ALL. Anybody knows how to re-write that query in fluent syntax? client.Cypher .Match("(node:Employee)") .Where(node=>**?**(node)== 3) .Return(node) There is no ID function name in the codebase, so you have to go old skool I'm afraid - the code below still uses parameters... client.Cypher .Match("(node:Employee)") .Where("ID(n) =

I am having weird issues with Neo4j's legacy indexing, and got stuck today. I need full text support, as I wish to run a performance comparison against Solr (which uses Lucene full text) to see how the different data model compares. I have been following a few guides online, as well as various posts around here on stack. I had success up until yesterday, where all of a sudden I had corrupted index files, as range queries were returning invalid and inconsistent results. So I am trying to set in stone exactly the steps I need to take. I use the CSV bulk import tool to populate my database with