exporting data from Neo4j to csv using java

Question

what is the best methodology to export data from Neo4j to CSV, I had imported data from csv to neo4j using CSV importer in the link https://github.com/sroycode/neo4j-import.

Answer 1

As you already have the ids, you can get the ids and their fwd relationships in chunks (of 5) using cypher, the csv separator is '|'

To test use neo4j-shell Syntax: neo4j-shell < infile > outfile

infile for node looks like

START n=node(1,2,3,4,5) return ID(n),n.name?,n.property?;
START n=node(6,7,8,9,10) return ID(n),n.name?,n.property?;
....

infile for reln looks like

START n=node(1,2,3,4,5) MATCH n-[r]->m RETURN ID(n),ID(m),TYPE(r),r.someprop?;
START n=node(6,7,8,9,10) MATCH n-[r]->m RETURN ID(n),ID(m),TYPE(r),r.someprop?;
....

To do the same thing in the Java API , just run the same in a for loop.