[Neo4j] Neo4jClient - Query optmised

Finally thanks to Peter and Marko, the .Net Neo4jClient code has been optimised to use short hand version of in('') and out(''). ChangeSet is http://hg.readify.net/neo4jclient/changeset/91ef447a9053 ___ NOTICE: THIS MAILING LIST IS BEING SWITCHED TO GOOG

Re: [Neo4j] println and Table Projections

Hi, Thanks for the tips, will see if I can change the client to use the new format. Indeed, let me try isolate the problems with more simpler queries. I have built a test case below, forgive me if I made it to complex. Friend => HasPet => Pet => HasCareTaker => CareTaker Friend => HasPet => Pet

Re: [Neo4j] I need help with this cypher query

Hey André, you already almost did it, just copying your parts together start shop=node(123), me=node(321) match shop-[:sell]->item<-[:like]-user,item<-[r1?:like]-me where r1 is null return item the missing part was the optional relationship for r1, which allows it to be null and you check for t

[Neo4j] I need help with this cypher query

I'm trying to create a cypher query. I have a shop=node(123) and me=node(321) start nodes. I want all items that shop-[:sell]->item<-[:like]-user but does not exist any r1 me-[r1:like]->item. It's that possible with cypher? -- View this message in context: http://neo4j-community-discussions

[Neo4j] Switching mailinglist during the weekend to Google Groups

Hi all, it turns out the Google Apps for you Domain Groups are not showing up in the central Google Index. That means we will switch this weekend to https://groups.google.com/forum/#!forum/neo4j instead. Currently, every mail to this list is forwarded to the new Google Group, and this will stay so

Re: [Neo4j] Cypher <3 Trees

E.g. a timeline tree with root -> centuries -> years -> months -> days -> hours I want to traverse the tree with cypher in the order of the entries, e.g. to extract data in a ordered fashion. Am 07.12.2011 um 17:05 schrieb Andres Taylor: > On Wed, Dec 7, 2011 at 4:25 PM, Michael Hunger < > mic

Re: [Neo4j] Cypher <3 Trees

ok, I agree I was too short on this one. What Peter suggested was to start somewhere in a tree (stem) and get the leafs based on a condition (x.importance > 30). For me, this is similiar to hierarchies, which are often build with the help nested sets in RDBMS. Anyways: forget about my comment.

Re: [Neo4j] Cypher <3 Trees

On Wed, Dec 7, 2011 at 4:25 PM, Michael Hunger < michael.hun...@neotechnology.com> wrote: > I would love to see consideration of branch ordering. > What do you mean? An example would be helpful. > Predicate support for trees like we now have for paths. > Didn't think in these terms. I like it.

Re: [Neo4j] Cypher <3 Trees

On Wed, Dec 7, 2011 at 4:14 PM, Peter Neubauer < peter.neuba...@neotechnology.com> wrote: > Mmh, > I would like to see that I can specify the "stem" of the tree as a > path and then get leaf nodes out from that Yeah, the cook book exposed this weakness clearly... > , something like > > START r

Re: [Neo4j] Cypher <3 Trees

On Wed, Dec 7, 2011 at 4:47 PM, D. Frej wrote: > +1 as this also goes into the direction of nested sets > I don't get it. Maybe I have my nomenclature all wrong, but thisis what I think of when I hear nested sets. What am I missing? Andrés

Re: [Neo4j] Cypher <3 Trees

+1 as this also goes into the direction of nested sets Am 07.12.2011 16:14, schrieb Peter Neubauer: > Mmh, > I would like to see that I can specify the "stem" of the tree as a > path and then get leaf nodes out from that, something like > > START root = node(0) > MATCH stem=root->(dir?*), stem-[

Re: [Neo4j] With rest,how to get the root URI

Ahh yes, Good call! /peter Sent from my phone, please excuse typos and autocorrection. On Dec 7, 2011 4:40 PM, "maxdemarzi" wrote: > http://docs.neo4j.org/chunked/milestone/rest-api-service-root.html > > The Reference Node: > > { > "relationship_index" : "http://localhost:7474/db/data/index/re

Re: [Neo4j] With rest,how to get the root URI

http://docs.neo4j.org/chunked/milestone/rest-api-service-root.html The Reference Node: { "relationship_index" : "http://localhost:7474/db/data/index/relationship";, "node" : "http://localhost:7474/db/data/node";, "relationship_types" : "http://localhost:7474/db/data/relationship/types";,

Re: [Neo4j] Cypher <3 Trees

I would love to see consideration of branch ordering. Predicate support for trees like we now have for paths. And returning trees and subgraphs as cypher results. Can we generalize this discussion to connected subgraphs or is this too early ? Michael Am 07.12.2011 um 16:14 schrieb Peter Neubau

Re: [Neo4j] Cypher <3 Trees

Mmh, I would like to see that I can specify the "stem" of the tree as a path and then get leaf nodes out from that, something like START root = node(0) MATCH stem=root->(dir?*), stem-[:LEAF]->leaf WHERE all(x in nodes(stem) WHERE x.importance > 30) RETURN leaf, stem Does that make sense? Cheers,

Re: [Neo4j] Feedback requested: Major "wish list" item for Neo4J

I definitely second this suggestion. We have recently being working on a binary store for dense data we would like to access as if they were properties of nodes. Right now we have properties that are references to files on disk, and then handle the binary ourselves, but this does not benefit from a

Re: [Neo4j] Modeling subrelationships in Neo4j

I think my explanation was not clear as it should be. I wasn't suggesting to replace the relationships with a node, but to shadow the relationshiptypes with a node. Let's say we have two relationshiptypes, KNOWS and FRIEND, where we want to state that friends form a subset of the people a perso

[Neo4j] Cypher <3 Trees

A subset of the graphs are trees, and they have a few problems that are specific for them. I'm right now planning what needs to be added to Cypher to make it play nice with your tree structures. I'd love to know if you have hierarchical data, and what queries you do and would like to do. Doesn't m

[Neo4j] Feedback requested: Major "wish list" item for Neo4J

One area where I would love to see the Neo4J team focus some energy is in the efficient storage and retrieval of blob/large text properties. Similar to the indexing strategy in Neo4J, it would be nice if this was pluggable (and it could depend on some other data store more optimized for blob/cl

Re: [Neo4j] Neo4j for a CMS backend

FWIW, we use Neo4J also as our "dependency graph" in ThingWorx. We can determine deep, two-way dependencies quite easily, so that when any object in ThingWorx is modified, we can intelligently do "hot" updates to affected entities without having to stop and restart the entire server. It would

Re: [Neo4j] Modeling subrelationships in Neo4j

To Niels' approach, Wouldn't it be a very dense graph ? For e.g. there will be several people inter-connected by KNOWS; if we model KNOWS as a node, there would be lots of edges originating from it. On Wed, Dec 7, 2011 at 5:16 PM, Alistair Jones < alistair.jo...@neotechnology.com> wrote: > Quali

Re: [Neo4j] Modeling subrelationships in Neo4j

Qualifying the relationships with an additional property (or properties) sounds like a sensible approach. The simplest thing to do would be to have a boolean property to distinguish the two types, so they would both have relationship type "KNOWS", and also a boolean property "well". You could use

Re: [Neo4j] path finding using OSM ways

We do indeed have twice the node count (and twice the relationship count). This is a necessary side effect of the fact that an OSM node can participate in more than one way (at intersections as well as shared edges of polygons, etc.). In addition, with shared edges the direction can be reversed fro

Re: [Neo4j] Are graphs ok for lots of Event data

Of course the graph can be used for processing event data, and whether that works for your case or not depends. But we have used it for this, and I can discuss a few points. The event stream is obviously just a linear chain and can be modeled as such in the graph (eg. with NEXT relationships betwe

Re: [Neo4j] Neo4j for a CMS backend

Haha, sorry, my bad. I meant CMDB actually :) Thanks for pointing that out Axel! 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 brew install neo

[Neo4j] Are graphs ok for lots of Event data

Is Neo4J a good fit for performing analysis on event data? For example if you were recording how long events took and wanted to get percentile data for a particular customer and product. Would this me mapped something like: Node: Duration Properties: duration (eg number of seconds/milli), eventDa

Re: [Neo4j] Neo4j for a CMS backend

Hi Peter, seems like you confused CMDB (Configuration Management Database) with CMS (Content Management System)? While Neo4j is perfect for building both, the use cases don't have very much in common ... Greetings Axel Am 07.12.2011 09:26, schrieb Peter Neubauer: > Hi folks, > thought this m

[Neo4j] Neo4j for a CMS backend

Hi folks, thought this might be interesting for some of you ... http://www.dzone.com/links/r/why_im_pretty_excited_about_using_neo4j_for_a_cmd.html Cheers, /peter neubauer GTalk:      neubauer.peter Skype       peter.neubauer Phone       +46 704 106975 LinkedIn   http://www.linkedin.com/in/neuba

Re: [Neo4j] println and Table Projections

Hi, Peter brings up a good point. Its hard for us to parse complex queries and see where Exceptions are happening. If you can isolate the problem via a simpler traversal, that would be best for us -- and our little baby brains. Also, note the following syntax optimizations for your traversal:

Re: [Neo4j] println and Table Projections

Mmh, I was thinking on how to return the contents of the output stream, I am not quite sure how to return that. What woudl be a good format for you? Also could you reduce this into a small testcase that I can work on? Cheers, /peter neubauer GTalk:      neubauer.peter Skype       peter.neubauer