Looks like the best-order stuff is being covered just fine in the other thread, nevermind :)
-- Matt Luongo Co-Founder, Scholr.ly On Fri, Aug 26, 2011 at 1:20 PM, Matt Luongo <[email protected]> wrote: > Peter, > > The arbitrary Groovy is great, but if I understand correctly, there still > isn't a straightforward way to do a best-first traversal *with* paging- is > there? It seems like that would require being able to introduce some sort of > server-side state through the GremlinPlugin (for pages). Maybe the solution > would be to re-run the traversal each time, and then return different > slices, but that's a pretty painful tradeoff. > > -- > Matt Luongo > Co-Founder, Scholr.ly > > > > On Fri, Aug 26, 2011 at 1:12 PM, Matt Luongo <[email protected]> wrote: > >> You can run the script through the Python neo4jrestclient by using the >> extension support. >> >> Try >> import neo4jrestclient.client as client >> gdb = client.GraphDatabase('http://localhost:7474/db/data') >> gdb.extensions.GremlinPlugin.execute_script(script="...") >> >> I think Javier is working on adding a "returns=<type>" style parameter in >> the most recent source so that >> the client can figure out what type to cast the data into- >> >> import neo4jrestclient.constants as constants >> gdb.extensions.GremlinPlugin.execute_script(script="...", >> returns=constants.NODE) >> >> But I haven't gotten this working quite yet. >> >> -- >> Matt Luongo >> Co-Founder, Scholr.ly >> >> >> >> On Fri, Aug 26, 2011 at 12:11 PM, Boris Kizelshteyn <[email protected]>wrote: >> >>> I didn't have luck running it through neo4jrest, but the following >>> function >>> does the trick for me: >>> >>> script = "g.v(0)" >>> >>> def RunGremlinScript(script): >>> >>> content=[] >>> >>> jout=[] >>> >>> out={} >>> >>> try: >>> >>> h = Http() >>> >>> response, content = h.request(GRAPHSERVER + >>> "ext/GremlinPlugin/graphdb/execute_script",\ >>> "POST",\ >>> json.dumps(dict(script=script)), \ >>> headers={'Accept':'application/json', >>> 'Content-type': 'application/json'}) >>> >>> >>> jcontent = json.loads(content) >>> >>> for x in jcontent: >>> >>> if isinstance(x, dict): >>> >>> for arr in x['data']: >>> >>> for e in range(len(arr)): >>> >>> out[str(x['columns'][e])] = arr[e] >>> >>> jout.append(dict(out)) >>> >>> else: >>> >>> return jcontent >>> >>> except: >>> >>> print "Unexpected error running gremlin: ", sys.exc_info()[0] >>> >>> print str(traceback.print_exc()) >>> >>> print jcontent >>> >>> return [{}] >>> >>> return jout >>> >>> On Fri, Aug 26, 2011 at 12:01 PM, Jacopo Farina < >>> [email protected]>wrote: >>> >>> > Nice! >>> > is there a way to run it easily from python with neo4jrestclient, >>> avoiding >>> > creating an http request manually ? In general, I wasn't able to >>> understand >>> > how to run a Gremlin script, or just a query, in python through the >>> > restclient library. >>> > Probably is a very simple business, but I started using it in Python >>> just >>> > yesterday. >>> > >>> > Cheers, >>> > Jacopo >>> > >>> > 2011/8/25 Peter Neubauer <[email protected]> >>> > >>> > > Guys, >>> > > with the custom sorting in Lucene and this thread coming up all the >>> time, >>> > I >>> > > took the time to document the execution of arbitrary Groovy and thus, >>> > Java >>> > > calls through REST. In the example below, there are calls to Neo4j >>> APIs, >>> > > Gremlin stuff and custom sorting using Lucene classes, and return of >>> a >>> > > Neo4j >>> > > search hit object. >>> > > >>> > > You can do all this in a Neo4j Server plugin, but if you need to, >>> this is >>> > > an >>> > > example on how to do it with only REST. >>> > > >>> > > >>> > > >>> > >>> http://docs.neo4j.org/chunked/snapshot/gremlin-plugin.html#rest-api-send-an-arbitrary-groovy-script---lucene-sorting >>> > > >>> > > Hope that helps for future reference! >>> > > >>> > > Cheers, >>> > > >>> > > /peter neubauer >>> > > >>> > > GTalk: neubauer.peter >>> > > Skype peter.neubauer >>> > > Phone +46 704 106975 >>> > > LinkedIn http://www.linkedin.com/in/neubauer >>> > > Twitter http://twitter.com/peterneubauer >>> > > >>> > > http://www.neo4j.org - Your high performance graph >>> > database. >>> > > http://startupbootcamp.org/ - Öresund - Innovation happens HERE. >>> > > http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing >>> party. >>> > > >>> > > >>> > > On Thu, Aug 25, 2011 at 1:00 AM, Matt Luongo <[email protected]> wrote: >>> > > >>> > > > +1, we could really use that. Client-side sorting sucks. >>> > > > >>> > > > -- >>> > > > Matt Luongo >>> > > > Co-Founder, Scholr.ly >>> > > > >>> > > > >>> > > > >>> > > > On Wed, Aug 24, 2011 at 4:43 PM, Aseem Kishore < >>> > [email protected] >>> > > > >wrote: >>> > > > >>> > > > > I've just spent a bunch of time reading into how one can control >>> the >>> > > > > ordering of a traverse beyond simple "breadth first" or "depth >>> > first". >>> > > > More >>> > > > > precisely, even when breadth first, how one can control *which* >>> > > neighbors >>> > > > > are traversed first. >>> > > > > >>> > > > > (It matters less in which order they're traversed vs. which order >>> > > they're >>> > > > > returned if you're returning all results, since you can just sort >>> on >>> > > the >>> > > > > client. But it matters a lot if you want to use the paged >>> traverser, >>> > > > since >>> > > > > you're then only returning the first results.) >>> > > > > >>> > > > > I've learned that this is doable from Java by writing your own >>> > > > > BranchSelector implementation: >>> > > > > >>> > > > > http://components.neo4j.org/neo4j/1.4.1/apidocs/ >>> > > > > >>> > > > > I've found the built-in implementations, e.g. the pre-order >>> > > breadth-first >>> > > > > and depth-first: >>> > > > > >>> > > > > >>> > > > > >>> > > > >>> > > >>> > >>> https://github.com/neo4j/community/blob/master/kernel/src/main/java/org/neo4j/kernel/PreorderBreadthFirstSelector.java >>> > > > > >>> > > > > >>> > > > > >>> > > > >>> > > >>> > >>> https://github.com/neo4j/community/blob/master/kernel/src/main/java/org/neo4j/kernel/PreorderDepthFirstSelector.java >>> > > > > >>> > > > > To achieve a custom "best first", Igor Dovgiy for example shared >>> that >>> > > he >>> > > > > modeled his implementation of the breadth-first selector, except >>> just >>> > > > using >>> > > > > a PriorityQueue instead of a regular Queue. >>> > > > > >>> > > > > My question is: is there any way to specify this sort of thing >>> over >>> > the >>> > > > > REST >>> > > > > API instead of having to write a plugin? If not, does that sound >>> like >>> > a >>> > > > > reasonable feature request? >>> > > > > >>> > > > > I really just want something simple: nodes ordered by some >>> > "timestamp" >>> > > > > property. It's killing us that we can't do this today. We might >>> just >>> > > have >>> > > > > to >>> > > > > look into writing this as a plugin... >>> > > > > >>> > > > > Thanks! >>> > > > > >>> > > > > Aseem >>> > > > > _______________________________________________ >>> > > > > Neo4j mailing list >>> > > > > [email protected] >>> > > > > https://lists.neo4j.org/mailman/listinfo/user >>> > > > > >>> > > > _______________________________________________ >>> > > > Neo4j mailing list >>> > > > [email protected] >>> > > > https://lists.neo4j.org/mailman/listinfo/user >>> > > > >>> > > _______________________________________________ >>> > > Neo4j mailing list >>> > > [email protected] >>> > > https://lists.neo4j.org/mailman/listinfo/user >>> > > >>> > _______________________________________________ >>> > Neo4j mailing list >>> > [email protected] >>> > https://lists.neo4j.org/mailman/listinfo/user >>> > >>> _______________________________________________ >>> Neo4j mailing list >>> [email protected] >>> https://lists.neo4j.org/mailman/listinfo/user >>> >> >> > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
