After a fast walk throw the code I found that option quite interesting and probably the best fit till now for that problem! I hope I will be able to provide a useful solution for those with the same problem than me...
I just tried you say I was expecting neo4j to provide me with something like a sort command, I really realise is something not common in the graphdb world, but something cool that can help a lot of people. - purbon On 15 July 2011 20:50, David Montag <david.mon...@neotechnology.com> wrote: > Marko, > > Isn't that pretty similar to what > https://github.com/peterneubauer/graph-collections< > https://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree > > > provides > for Neo4j? > > David > > On Fri, Jul 15, 2011 at 11:30 AM, Marko Rodriguez <okramma...@gmail.com > >wrote: > > > Hi, > > > > Pere, my last thought on this is that you might want to use something > like > > JDBM2. > > > > http://code.google.com/p/jdbm2/ > > > > It has a Maven2 <dependency> if you do it that way. > > > > JDBM2 provides you some Java collection implementations that are > persistent > > to disk... > > > > See ya, > > Marko. > > > > http://markorodriguez.com > > > > On Jul 15, 2011, at 12:22 PM, Pere Urbon Bayes wrote: > > > > > Yeah! well to order in memory I can really deal with that task, for > this > > I > > > really don't need cypher. Don´t take it personally, I know you really > > want > > > to promote your language, xD! > > > > > > - purbon > > > > > > PD: See you next graphdb meetup in Berlin! > > > > > > On 15 July 2011 19:37, Michael Hunger < > michael.hun...@neotechnology.com > > >wrote: > > > > > >> You might also try to use cypher for your traversal which is able to > > order > > >> (also in memory of course). > > >> > > >> See the screencast I did: > > >> http://neo4j.vidcaster.com/U2Y/introduction-to-cypher/ > > >> > > >> It's even the same domain. > > >> > > >> Cheers > > >> > > >> Michael > > >> > > >> Am 15.07.2011 um 17:24 schrieb Rick Bullotta: > > >> > > >>> But you couldn't easy do a complex traversal with an RDBMS. ;-) > > >>> > > >>> I suspect that even if you could write some magic SQL to do so, you'd > > >> almost certainly lose the benefits any optimized sorting/ordering that > > >> indices provide, so even the RDBMS would have to post-process the > sort. > > >>> > > >>> If the traversal isn't complex or randomly "deep", then Neo indexing > + > > >> querying might work for you the same way an RDBMS might handle it. > > >>> > > >>> > > >>> -----Original Message----- > > >>> From: user-boun...@lists.neo4j.org [mailto: > > user-boun...@lists.neo4j.org] > > >> On Behalf Of Pere Urbon Bayes > > >>> Sent: Friday, July 15, 2011 11:21 AM > > >>> To: Neo4j user discussions > > >>> Subject: Re: [Neo4j] Getting sorted results from a traversal > > >>> > > >>> Well, the thing is that the database can easy deal with that, as the > > >>> relational system do. > > >>> > > >>> / purbon > > >>> > > >>> On 15 July 2011 17:08, Rick Bullotta <rick.bullo...@thingworx.com> > > >> wrote: > > >>> > > >>>> The DB would do it in memory too, wouldn't it? In the case of a > > complex > > >>>> traversal, indexes don't really apply, since the ordering and the > > >> traversal > > >>>> order are unrelated, so you'd generally need to sort in memory > anyway. > > >>>> Whether you do it as you add elements to the traversed list of > "stuff" > > >> or > > >>>> do it after the fact is another discussion, but I think in either > > case, > > >> it > > >>>> needs to be done "after the fact". > > >>>> > > >>>> > > >>>> -----Original Message----- > > >>>> From: user-boun...@lists.neo4j.org [mailto: > > user-boun...@lists.neo4j.org > > >> ] > > >>>> On Behalf Of Pere Urbon Bayes > > >>>> Sent: Friday, July 15, 2011 11:05 AM > > >>>> To: Neo4j user discussions > > >>>> Subject: Re: [Neo4j] Getting sorted results from a traversal > > >>>> > > >>>> Well, this is great if I want to do all the math in memory, but I > > expect > > >> to > > >>>> do the computation by the db. > > >>>> > > >>>> / purbon > > >>>> > > >>>> On 15 July 2011 16:10, Marko Rodriguez <okramma...@gmail.com> > wrote: > > >>>> > > >>>>> Hi Pere, > > >>>>> > > >>>>> To sort you need to have all your results. > > >>>>> > > >>>>> Thus, in Gremlin (and hopefully you can do the mapping to the core > > >> Neo4j > > >>>>> traverser framework), > > >>>>> > > >>>>> results = [] > > >>>>> g.v(1).out('friend').out('likes') >> results // what my friends > like > > >>>>> results.sort{a,b -> a.name <=> b.name} // sort resultant vertices > by > > >>>> name > > >>>>> > > >>>>> In short, once you have the result of your traversal, you can then > > >> apply > > >>>> a > > >>>>> comparator to the Collection to sort it as you please --- its just > > Java > > >>>>> comparators. > > >>>>> > > >>>>> See ya, > > >>>>> Marko. > > >>>>> > > >>>>> http://markorodriguez.com > > >>>>> > > >>>>> On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote: > > >>>>> > > >>>>>> HI! > > >>>>>> I am on the situation of having to traverse neo4j, and then expect > > the > > >>>>>> resultset returned to be ordered in a certain order. I've been > > >>>>> researching a > > >>>>>> bit over the traversal API, but I did not find anything related to > > >>>> that. > > >>>>> I > > >>>>>> really will appreciate any tip on that!! > > >>>>>> > > >>>>>> BTW > I expect to be possible right?, as we have in relational the > > >>>>> ordering, > > >>>>>> or on redis, etc... > > >>>>>> > > >>>>>> /purbon > > >>>>>> > > >>>>>> -- > > >>>>>> Pere Urbon-Bayes > > >>>>>> moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany > > >>>>>> Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133 > > >>>>>> _______________________________________________ > > >>>>>> Neo4j mailing list > > >>>>>> User@lists.neo4j.org > > >>>>>> https://lists.neo4j.org/mailman/listinfo/user > > >>>>> > > >>>>> _______________________________________________ > > >>>>> Neo4j mailing list > > >>>>> User@lists.neo4j.org > > >>>>> https://lists.neo4j.org/mailman/listinfo/user > > >>>>> > > >>>> > > >>>> > > >>>> > > >>>> -- > > >>>> Pere Urbon-Bayes > > >>>> moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany > > >>>> Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133 > > >>>> _______________________________________________ > > >>>> Neo4j mailing list > > >>>> User@lists.neo4j.org > > >>>> https://lists.neo4j.org/mailman/listinfo/user > > >>>> _______________________________________________ > > >>>> Neo4j mailing list > > >>>> User@lists.neo4j.org > > >>>> https://lists.neo4j.org/mailman/listinfo/user > > >>>> > > >>> > > >>> > > >>> > > >>> -- > > >>> Pere Urbon-Bayes > > >>> moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany > > >>> Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133 > > >>> _______________________________________________ > > >>> Neo4j mailing list > > >>> User@lists.neo4j.org > > >>> https://lists.neo4j.org/mailman/listinfo/user > > >>> _______________________________________________ > > >>> Neo4j mailing list > > >>> User@lists.neo4j.org > > >>> https://lists.neo4j.org/mailman/listinfo/user > > >> > > >> _______________________________________________ > > >> Neo4j mailing list > > >> User@lists.neo4j.org > > >> https://lists.neo4j.org/mailman/listinfo/user > > >> > > > > > > > > > > > > -- > > > Pere Urbon-Bayes > > > moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany > > > Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133 > > > _______________________________________________ > > > Neo4j mailing list > > > User@lists.neo4j.org > > > https://lists.neo4j.org/mailman/listinfo/user > > > > _______________________________________________ > > Neo4j mailing list > > User@lists.neo4j.org > > https://lists.neo4j.org/mailman/listinfo/user > > > > > > -- > David Montag <david.mon...@neotechnology.com> > Neo Technology, www.neotechnology.com > Cell: 650.556.4411 > Skype: ddmontag > _______________________________________________ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Pere Urbon-Bayes moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133 _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
