Hi,
Having read the replies and thought about it more, I think my initial e-mail
had a slightly wrong focus. The technical details that have surfaced so far
are interesting, and would definitely be relevant, should an implementation
be attempted.
However.
What I personally would like to know is,
Actually, I think there's one other key "gotcha" to be aware of.
Rewiring relationships when importing should not assume anything about the
nodeID's. While the nodeID's are a useful "unique identifier" in the export
process, on import, you'd want to create a HashMap or similar structure that
yo
Well, I definitely need to fuss about data types...and I would also think
that it would require at least a two-pass import to ensure that all nodes
were created prior to attempting to wire up relationships, since there is a
definite "order dependency" involved in most if not all graph models.
In g
Rdf seems a good candidate to me.
Having said that it might just be pretty easy to write out the graph
in a spreadsheet (nodes and properties in one tab and relationship
triples and properties in another) and import that, as long as you
aren't fussed about maintaining data types.
Rob.
On 18/01/2
Hi David,
one thing would be to provide example node spaces, maybe even as
Amazon EC2 AMIs, or downloadable nodespaces.
Regrading XML format, I think GraphML is the most standard thing
there, Gremlin already has a GraphML importer that can be used to
import data into Neo4j,
http://wiki.github.com/
If you are focusing on changes of nodes, why not just archive the changes as
a new sub-graph? This allows you to maintain everything in a single database
(allowing simpler code and more possibilities), and also allows you to
manage changes of different part of the graph independently, so you don't
Hi,
This weekend I was toying around with Neo4j. I wanted to do some indexing
experiments. Unfortunately I found myself without a graph to work with.
Sure, I could write some code to generate a graph for me, but it'd be a
one-time-thing. I wanted to get going *now*. That got me thinking about
impo
Thanks, we'll look into the transaction manager.
On Jan 18, 2010 1:21 AM, "Mattias Persson"
wrote:
At the moment you cannot register listeners for committed nodes or
stuff like that, but you could take a look at the
TransactionEventManager in the "utils" component,
http://components.neo4j.org/ne
Hi,
The new artifact id and versions for rdf components are:
neo4j-rdf 0.6-SNAPSHOT (svn components/rdf)
neo4j-rdf-sail 0.5-SNAPSHOT (svn components/rdf-sail)
They in turn depend on:
neo4j-kernel 1.0-SNAPSHOT
neo4j-index 1.0-SNAPSHOT
-Johan
On Mon, Jan 18, 2010 at 3:13 PM, Peter Neubauer
wro
Hi Alessia,
we are waiting to release the Neo4j components until the Neo4j 1.0
release for the core components. I you want to migrate now, check out
the rdf trunk and build a Snapshot release locally, or depend on a
deployed snapshot release.
Does that work for you?
Cheers,
/peter neubauer
COO
Hi all,
I am using Neo4j sail and store (packages org.neo4j.rdf and
org.neo4j.rdf.sail)
I'd like to update my neo4j version from 1.0b9 to the current release 1.0
but I can't find the updated jars for rdf and rdf-sail.
Can anyone help me find all needed dependencies?
Thanks,
Alessia
__
This can however be done using the "natural index" of the graph, in
that you query for one property and for each hit you traverse the
graph to see if the rest matches. That's more of a "graphy" thinking
in my book.
2010/1/18 Mattias Persson :
> Currently that's not possible, but you could probably
At the moment you cannot register listeners for committed nodes or
stuff like that, but you could take a look at the
TransactionEventManager in the "utils" component,
http://components.neo4j.org/neo4j-utils/ . You can use it to register
listeners for events that you send yourself. Your listeners wi
Currently that's not possible, but you could probably do it be
extending LuceneIndexService (if those vital parts are protected,
_not_ private).
Maybe it'd be easy enough to implement a getNodes( Object value ) on
the LuceneIndexService which could then query in multiple indices. Or
with something
You found your answers in another thread, right?
2010/1/12 Mattias Persson :
> That's strange, let me have a look at it... I'll try such an example
> and see if I can figure out why it isn't working!
>
> 2010/1/12 Zerony Zhao :
>> Thanks for your reply.
>>
>> Since I am trying to search a range of
FYI, I've implemented such functionality in IndexService (and
LuceneIndexService), i.e added methods:
removeIndex( Node node, String key )
and
removeIndex( String key )
They will be merged into trunk soon after 1.0 release.
2010/1/4 Mattias Persson :
> 2010/1/4 Taylor Cowan :
>> I share this c
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