Loading existing graphs

[Z]

I beg your collective pardons if this has been covered somewhere and I
managed to miss it, but how exactly would I load a graph (specifically
a Neo4j graph) into Gremlin that I created at some other point in
time?

For example, how would I manipulate the base graph that is created by
the Neo4j server distribution via Gremlin, without utilizing the web-
based Gremlin shell? Additionally, if I had used Gremlin to create a
standalone graph at one point in time, and then, in another point in
time, using a totally new gremlin process, how would I load and
manipulate the already existent graph?

[Peter Neubauer]

Hi there,
you would just point the Neo4j graph in grermlin to your Neo4j database, like

g = new Neo4jGraph('/pth/to/db', false)

Cheers,

/peter neubauer

Google:    neubauer.peter
Skype:     peter.neubauer
Phone:     +46 704 106975
LinkedIn:  http://www.linkedin.com/in/neubauer
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brew install neo4j && neo4j start
heroku addons:add neo4j

[deeptree]

What am I missing, the method signature does not indicate a second parameter? "graph1 exists"

gremlin> graphstore = "C:\\temp\\graph1"
==>C:\temp\graph1

gremlin> Graph g = new Neo4jGraph(graphstore, false)
Could not find matching constructor for: com.tinkerpop.blueprints.pgm.impls.neo4
j.Neo4jGraph(java.lang.String, java.lang.Boolean)

==
No second argument, JAVDOC shows 'string path only',
http://goo.gl/ja6Re

Neo4jGraph

public Neo4jGraph(java.lang.String directory)

Thanks.

BTW: Is there a gremlin recipe/pattern collection / site?

[Pierre De Wilde]

Hey,

Check Neo4jGraph constructors at

http://tinkerpop.com/maven2/com/tinkerpop/blueprints/blueprints/1.1/api/com/tinkerpop/blueprints/pgm/impls/neo4j/Neo4jGraph.html

> BTW: Is there a gremlin recipe/pattern collection / site?

https://github.com/tinkerpop/gremlin/wiki/Gremlin-Cookbook

HTH,

Pierre

[Connah Cutbush]

Hi Pierre,

I'm having the same problem in that the Gremlin terminal doesn't accept the second parameter.

gremlin> graphstore = 'movieRatings'

==>movieRatings

gremlin> g = new Neo4jGraph(graphstore, false)

Could not find matching constructor for: com.tinkerpop.blueprints.impls.neo4j.Neo4jGraph(java.lang.String, java.lang.Boolean)

I can see from the doc of the constructors that the second parameter should be fine but it's not being accepted. What am I missing?

I'm using Gremlin 2.3 on a mac.

Thanks

[Stephen Mallette]

Looks like the constructor signatures might have shifted a bit since Blueprints 1.1

http://www.tinkerpop.com/docs/javadocs/blueprints/2.3.0/com/tinkerpop/blueprints/impls/neo4j/Neo4jGraph.html

Stephen

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