Re: [Neo4j] REST and dijkstra
There are some graph algos exposedhttp://components.neo4j.org/neo4j-server/0.6-SNAPSHOT/rest.html#Finding_paths_between_two_nodes(which I wrote), but the Dijkstra algo isn't available there... Either dig in and extend it with Dijkstra support or write an extension as Jim mentioned. 2011/1/24 Jim Webber j...@neotechnology.com Hi Michael, AFIAK, I don't think there's an OOB solution directly but it's quite easy to wire up a graph algo to the REST managed extensions. See: org.neo4j.server.plugins.GraphCloner for an example of such an algo and how it's implemented. Has anyone else hacked together a REST binding for the graph algos? Jim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Shell, LuceneIndex and Matching Questions
Hi,
thank you for making these things clear.
I think I can handle these fake iterables. I just wanted to clearify that,
because I did not find this in the doc for graphmatching.
About the second problem. I see my fault. Everywhere the valuecontext.numeric
has to be used. Thank you for that.
I have tried to run the shell wie Eclipse. Starting the StartClient with
arguments via run and that ends in the loop. Now I have downloaded the
distribution without maven and run it with the windows console and it works
fine.
Regards,
-Ursprüngliche Nachricht-
Von: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] Im
Auftrag von Mattias Persson
Gesendet: Mittwoch, 19. Januar 2011 09:15
An: Neo4j user discussions
Betreff: Re: [Neo4j] Shell, LuceneIndex and Matching Questions
2011/1/11 Konstanze.Lorenz konstanze.lor...@fh-zwickau.de:
Hello and a happy new year List,
Hi!
and sorry for late response
I have got a problem with the PatternMatcher.getMatcher().match(PatternNode
start, Node start)
The returntype should be an Iterable, but it doesnt behave like an Iterable.
I could not call it twice in a for-each-loop.
A simple example:
--
IterablePatternMatch iter = matcher.match(matchStartNode, neoStartNode);
for(PatternMatch i : iter){
System.out.println(i);
}
System.out.println(second call);
for(PatternMatch i : iter){
System.out.println(i);
}
Results on the console:
org.neo4j.graphmatching.PatternMatch@1542a75
org.neo4j.graphmatching.PatternMatch@af993e
Second call
I'm expecting the two Patternmatch-objects after the second call too.
I'm sorry to say that there are a couple of these fake Iterables which
really are Iterators and just implements Iterable to be able to
participate in for-each loops. Is this a show stopper for you?
---
The second problem concerns the IndexNode. get(String key, Object value)
method.
If the IndexNode has the LuceneIndexProvider.Exact_config it is not
possible to get a result if a value of type number is called AND the
transaction is restarted after adding the key-entity-value-triple to the
index. I know the value is correctly in the index, because the
IndexNode.query() Method returns a result. Only the get-Method doesnt.
By the way, the get-Method works fine with String, but it is necessary for
the project to handle with Number.
Here is a small example:
-
String indexName = number;
String key = anyNumber;
beginTx();
IndexNode indexService = neo.index().forNodes(indexName,
LuceneIndexProvider.EXACT_CONFIG);
int property50 = 50;
Node numberNode50 = neo.createNode();
numberNode50.setProperty(key, property50);
indexService.add(numberNode50,
key,ValueContext.numeric(property50));
restartTx();
System.out.println(indexService.get(key,
ValueContext.numeric(property50)).getSingle());
---
Results on the console:
Null
If I do not restartTx(), then the result is the expected node numberNode50
This is inconsistent behaviour for sure and I'll see what can be done
about it. To query numeric values you have to use the query method
with a specific query, since Lucene handles numeric values in a very
special way. See
http://wiki.neo4j.org/content/Index_Framework#Numeric_ranges for more
information about that.
-
The third problem is about the internal shell. If I start the shell from
local path it runs into a loop, with repeating this line:
neo4j-sh (0)$ java.lang.NullPointerException: nullnull
Any clues how to resolve this?
All above problems occur for the 1.2 release.
I have the neo4j-shell 1.2 locally installed and work with it quite
frequently without errors. Is it for a certain database only, or for
all you try? Do you use the bin/neo4j-shell from the Neo4j 1.2
distribution or do you hack your own classpath and run? Does something
like this give additional stacktraces:
$ neo4j-shell -DSTACKTRACES=true -path my/path
Regards,
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Re: [Neo4j] Multiple running databases
Hi Guillem, I believe on both windows and *nix, neo4j install creates a single service. So, just having two neo4j installation directories with different configuration isn't enough if you want them to both run as a service. In *nix land, you could simply copy the /etc/init.d/ script to a new name and then have both services running. On Windows, you'd have to manually start and stop the server rather than installing as a service to have two running. Unless someone smarter than me could describe how to duplicate a Windows service entry. Cheers, Andreas ps. I'll try this out on a Windows machine and report back. On Jan 24, 2011, at 9:34 PM, Guillem Medina wrote: Hi Jim, in fact I'm thinking that it could be related with the version I was trying before (it was the milestone 3 or 4 but not the current one). I've just try it half an hour ago in my mac and I didn't had any problem. Let's see how it goes tomorrow when I'll try it again with the windows server. Thanks again, Guillem On 24 January 2011 21:20, Jim Webber j...@neotechnology.com wrote: Hi Guillem, I think this might be a problem in 1.2. AFAIK, the web admin server in 1.2 isn't actually configurable through config, but is in fact hard coded, sadly. I changed that a few weeks back, but I suspect it didn't make it into the 1.2. release unless someone knows better. It's certainly there for the 1.3 release. Jim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Guillem Medina ___ 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
Re: [Neo4j] Multiple running databases
Hi Andreas, It was related with the creation of services in Windows, but I've just make it work. In order to create two different services for the neo4j servers the only thing necessary (besides the modifications explained before) it's to change the neo4j-wrapper, in the part related with Windows services and modify the line wrapper.name = neo4j in one of the servers folder in order to call it with another name, in my case neo4j_dev. That way we'll have to different services. Cheers, Guillem -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Andreas Kollegger Sent: martes, 25 de enero de 2011 13:07 To: Neo4j user discussions Subject: Re: [Neo4j] Multiple running databases Hi Guillem, I believe on both windows and *nix, neo4j install creates a single service. So, just having two neo4j installation directories with different configuration isn't enough if you want them to both run as a service. In *nix land, you could simply copy the /etc/init.d/ script to a new name and then have both services running. On Windows, you'd have to manually start and stop the server rather than installing as a service to have two running. Unless someone smarter than me could describe how to duplicate a Windows service entry. Cheers, Andreas ps. I'll try this out on a Windows machine and report back. On Jan 24, 2011, at 9:34 PM, Guillem Medina wrote: Hi Jim, in fact I'm thinking that it could be related with the version I was trying before (it was the milestone 3 or 4 but not the current one). I've just try it half an hour ago in my mac and I didn't had any problem. Let's see how it goes tomorrow when I'll try it again with the windows server. Thanks again, Guillem On 24 January 2011 21:20, Jim Webber j...@neotechnology.com wrote: Hi Guillem, I think this might be a problem in 1.2. AFAIK, the web admin server in 1.2 isn't actually configurable through config, but is in fact hard coded, sadly. I changed that a few weeks back, but I suspect it didn't make it into the 1.2. release unless someone knows better. It's certainly there for the 1.3 release. Jim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Guillem Medina ___ 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 NOTA LEGAL Le informamos que el correo electrónico y las comunicaciones por medio de Internet no permiten asegurar ni garantizar la confidencialidad de los mensajes transmitidos, así como tampoco su integridad o su correcta recepción, por lo que el emisor no asume responsabilidad alguna por tales circunstancias. Este mensaje va dirigido, de manera exclusiva, a su destinatario y contiene información confidencial y sujeta al secreto profesional, cuya divulgación esta prohibida. En caso de haber recibido este mensaje por error, le rogamos que nos lo comunique mediante correo electrónico remitido a nuestra atención y proceda a su eliminación, así como a la de cualquier documento adjunto al mismo. Asimismo, le comunicamos que la distribución, copia o utilización de este mensaje, o de cualquier documento adjunto al mismo, cualquiera que fuera su finalidad, están prohibidas por la ley. La información que haya puesto en nuestro conocimiento, consta en un fichero titularidad de APHELION SOLUCIONES INFORMATICAS, S.L. con el objeto de mantener el contacto comercial con Ud. establecido. Puede ejercer los derechos de acceso, rectificación, cancelación y en su caso oposición enviando un escrito al efecto, acompañado de una fotocopia de su D.N.I. a la siguiente dirección: APHELION SOLUCIONES INFORMATICAS, S.L. C/ El Salvador 35 C.P. 46900 Torrent (Valencia). Asimismo, es su responsabilidad comprobar que este mensaje o sus archivos adjuntos no contengan virus informáticos, y en caso que los tuvieran eliminarlos. LEGAL NOTICE Please note that e-mail and communications through the Internet can not assure or guarantee the confidentiality of messages transmitted, and neither their integrity or proper receipt, so the issuer does not assume any responsibility for such circumstances. This message is addressed, exclusively to its recipient and contains confidential information and subject to professional secrecy, disclosure of which is forbidden. If you have received this message in error, please notify us by e-mail and delete the message as well as any document attached to it. Please also note that the distribution, use or copy of this message or any attachment to it, whatever its purpose, is prohibited by law. The information which you have placed in our knowledge is registered in a file owned by APHELION SOLUCIONES INFORMATICAS, S.L. and is aimed
[Neo4j] Expanding nodespace in Neo 1.3
Maybe this is a stupid question (or not), but I'm assuming that the relationship id will also be expanded as well? Supporting a large # of nodes without also supporting a large # of relationships would obviously not make sense, but just wanted to confirm. Thanks, Rick ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] default server extensions, where to put them and how to expose them
Yeah, that would be great. I think the extension you are talking about would be to have a traversal running, so I would make it an implementation of the yet-to-come Script execution extension with a JavaScript or Gremlin Snippet in it. Would be good test for that one. Tobias, you had started on that one at some point? Could we add that traversal as a test to it? For a collection of cool traversals, that sounds great. Maybe we could have a place for scripts at GIThub, and you can then in your request point at scripts from URLs? That way, things could just be picked up from others without the strict need for a centralized repo (making it optional). 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://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Tue, Jan 25, 2011 at 11:35 AM, Michael Hunger michael.hun...@neotechnology.com wrote: While looking at the bad imdb performance, I also noticed that there are already a few extensions provided with the neo4j-server package. Things like this could be useful (will there a place / repo to collect those extensions?): get a node with all properties, all its relationships (perhaps filtered by type/directions) and via those all neighbors and all their properties in one go. That would at least for imdb provide a great performance boost. It would be nice if the extensions could be easily exposed by the Rest-GDS wrapper (i.e. I provide an interface with a method name which is mapped to the rest URL and parameters and a return type (like rails/grails/hades finder methods) and the wrapper returns a proxy that handles the rest call. WDYAT? Cheers Michael ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Multiple running databases
Thanks for reporting that back, Guillem! We will put it into the reference docs so others can benefit fro your findings! 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://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. 2011/1/25 Guillem Medina Martínez guillem.med...@addinformatica.com: Hi Andreas, It was related with the creation of services in Windows, but I've just make it work. In order to create two different services for the neo4j servers the only thing necessary (besides the modifications explained before) it's to change the neo4j-wrapper, in the part related with Windows services and modify the line wrapper.name = neo4j in one of the servers folder in order to call it with another name, in my case neo4j_dev. That way we'll have to different services. Cheers, Guillem -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Andreas Kollegger Sent: martes, 25 de enero de 2011 13:07 To: Neo4j user discussions Subject: Re: [Neo4j] Multiple running databases Hi Guillem, I believe on both windows and *nix, neo4j install creates a single service. So, just having two neo4j installation directories with different configuration isn't enough if you want them to both run as a service. In *nix land, you could simply copy the /etc/init.d/ script to a new name and then have both services running. On Windows, you'd have to manually start and stop the server rather than installing as a service to have two running. Unless someone smarter than me could describe how to duplicate a Windows service entry. Cheers, Andreas ps. I'll try this out on a Windows machine and report back. On Jan 24, 2011, at 9:34 PM, Guillem Medina wrote: Hi Jim, in fact I'm thinking that it could be related with the version I was trying before (it was the milestone 3 or 4 but not the current one). I've just try it half an hour ago in my mac and I didn't had any problem. Let's see how it goes tomorrow when I'll try it again with the windows server. Thanks again, Guillem On 24 January 2011 21:20, Jim Webber j...@neotechnology.com wrote: Hi Guillem, I think this might be a problem in 1.2. AFAIK, the web admin server in 1.2 isn't actually configurable through config, but is in fact hard coded, sadly. I changed that a few weeks back, but I suspect it didn't make it into the 1.2. release unless someone knows better. It's certainly there for the 1.3 release. Jim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Guillem Medina ___ 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 NOTA LEGAL Le informamos que el correo electrónico y las comunicaciones por medio de Internet no permiten asegurar ni garantizar la confidencialidad de los mensajes transmitidos, así como tampoco su integridad o su correcta recepción, por lo que el emisor no asume responsabilidad alguna por tales circunstancias. Este mensaje va dirigido, de manera exclusiva, a su destinatario y contiene información confidencial y sujeta al secreto profesional, cuya divulgación esta prohibida. En caso de haber recibido este mensaje por error, le rogamos que nos lo comunique mediante correo electrónico remitido a nuestra atención y proceda a su eliminación, así como a la de cualquier documento adjunto al mismo. Asimismo, le comunicamos que la distribución, copia o utilización de este mensaje, o de cualquier documento adjunto al mismo, cualquiera que fuera su finalidad, están prohibidas por la ley. La información que haya puesto en nuestro conocimiento, consta en un fichero titularidad de APHELION SOLUCIONES INFORMATICAS, S.L. con el objeto de mantener el contacto comercial con Ud. establecido. Puede ejercer los derechos de acceso, rectificación, cancelación y en su caso oposición enviando un escrito al efecto, acompañado de una fotocopia de su D.N.I. a la siguiente dirección: APHELION SOLUCIONES INFORMATICAS, S.L. C/ El Salvador 35 C.P. 46900 Torrent (Valencia). Asimismo, es su responsabilidad comprobar que este mensaje o sus archivos adjuntos no contengan virus informáticos, y en caso que los tuvieran eliminarlos. LEGAL NOTICE Please note that e-mail and communications through the Internet can not assure or guarantee the confidentiality of messages transmitted, and neither their integrity or proper receipt, so the issuer does not assume any
Re: [Neo4j] Expanding nodespace in Neo 1.3
Yes, this is in the roadmap for 1.3, and getting working on very soon (TM). The ID space is for both properties, relationships and nodes, so expansion will affect all of them. 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://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Tue, Jan 25, 2011 at 3:12 PM, Rick Bullotta rick.bullo...@burningskysoftware.com wrote: Maybe this is a stupid question (or not), but I'm assuming that the relationship id will also be expanded as well? Supporting a large # of nodes without also supporting a large # of relationships would obviously not make sense, but just wanted to confirm. Thanks, Rick ___ 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
Re: [Neo4j] Expanding nodespace in Neo 1.3
That's a good point to clarify: The number of possible nodes, relationships, and properties will each increase with complementary id sizes. Best, Andreas On Jan 25, 2011, at 3:12 PM, Rick Bullotta wrote: Maybe this is a stupid question (or not), but I'm assuming that the relationship id will also be expanded as well? Supporting a large # of nodes without also supporting a large # of relationships would obviously not make sense, but just wanted to confirm. Thanks, Rick ___ 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
Re: [Neo4j] Multiple running databases
Guillem, docs are updated to reflect this, see http://docs.neo4j.org/chunked/snapshot/server-installation.html#_multiple_server_instances_on_one_machine Is that information correct or is there more to it? 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://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Tue, Jan 25, 2011 at 3:21 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Thanks for reporting that back, Guillem! We will put it into the reference docs so others can benefit fro your findings! 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://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. 2011/1/25 Guillem Medina Martínez guillem.med...@addinformatica.com: Hi Andreas, It was related with the creation of services in Windows, but I've just make it work. In order to create two different services for the neo4j servers the only thing necessary (besides the modifications explained before) it's to change the neo4j-wrapper, in the part related with Windows services and modify the line wrapper.name = neo4j in one of the servers folder in order to call it with another name, in my case neo4j_dev. That way we'll have to different services. Cheers, Guillem -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Andreas Kollegger Sent: martes, 25 de enero de 2011 13:07 To: Neo4j user discussions Subject: Re: [Neo4j] Multiple running databases Hi Guillem, I believe on both windows and *nix, neo4j install creates a single service. So, just having two neo4j installation directories with different configuration isn't enough if you want them to both run as a service. In *nix land, you could simply copy the /etc/init.d/ script to a new name and then have both services running. On Windows, you'd have to manually start and stop the server rather than installing as a service to have two running. Unless someone smarter than me could describe how to duplicate a Windows service entry. Cheers, Andreas ps. I'll try this out on a Windows machine and report back. On Jan 24, 2011, at 9:34 PM, Guillem Medina wrote: Hi Jim, in fact I'm thinking that it could be related with the version I was trying before (it was the milestone 3 or 4 but not the current one). I've just try it half an hour ago in my mac and I didn't had any problem. Let's see how it goes tomorrow when I'll try it again with the windows server. Thanks again, Guillem On 24 January 2011 21:20, Jim Webber j...@neotechnology.com wrote: Hi Guillem, I think this might be a problem in 1.2. AFAIK, the web admin server in 1.2 isn't actually configurable through config, but is in fact hard coded, sadly. I changed that a few weeks back, but I suspect it didn't make it into the 1.2. release unless someone knows better. It's certainly there for the 1.3 release. Jim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Guillem Medina ___ 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 NOTA LEGAL Le informamos que el correo electrónico y las comunicaciones por medio de Internet no permiten asegurar ni garantizar la confidencialidad de los mensajes transmitidos, así como tampoco su integridad o su correcta recepción, por lo que el emisor no asume responsabilidad alguna por tales circunstancias. Este mensaje va dirigido, de manera exclusiva, a su destinatario y contiene información confidencial y sujeta al secreto profesional, cuya divulgación esta prohibida. En caso de haber recibido este mensaje por error, le rogamos que nos lo comunique mediante correo electrónico remitido a nuestra atención y proceda a su eliminación, así como a la de cualquier documento adjunto al mismo. Asimismo, le comunicamos que la distribución, copia o utilización de este mensaje, o de cualquier documento adjunto al mismo, cualquiera que fuera su finalidad, están prohibidas por la ley. La información que haya puesto en nuestro conocimiento, consta en un fichero titularidad de APHELION SOLUCIONES INFORMATICAS, S.L. con el objeto de mantener el contacto comercial con Ud. establecido. Puede ejercer los derechos de
[Neo4j] about error
Hello list, i hope that all are fine,
i have this code ,
public class Particion()
{
LinkedListClaseEquivalencia elements;
Node node;
public Particion(Node node)
{
this.node = node;
this.node.setProperty(elements, elements);
}
...
}
and me compiler return,
Exception in thread main java.lang.IllegalArgumentException: Unknown property
type on: []
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Re: [Neo4j] about error
Jose,
Arrays of objects are not supported as properties. In that case, you
should probably either model these as Nodes and Relationships, or
serialize them into a String and that way persist the List.
An example of using Spring to model Sets is in
https://github.com/SpringSource/spring-data-graph-examples/blob/master/imdb/src/main/java/org/neo4j/examples/imdb/domain/Actor.java
.
Would that help?
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://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
On Tue, Jan 25, 2011 at 8:16 PM, Jose Angel Inda Herrera
jai...@estudiantes.uci.cu wrote:
Hello list, i hope that all are fine,
i have this code ,
public class Particion()
{
LinkedListClaseEquivalencia elements;
Node node;
public Particion(Node node)
{
this.node = node;
this.node.setProperty(elements, elements);
}
...
}
and me compiler return,
Exception in thread main java.lang.IllegalArgumentException: Unknown
property type on: []
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[Neo4j] Traversal Question
Hello, We are trying to use neo4j graph database in one of our applications. I think we hit a roadblock with traversal framework. It could be due to our limited knowledge of neo4j framework. Here is what we are trying to accomplish: We need to get a path(from the graph below) from the nodes A to E through relations REL1, REL2, REL3 REL4. All we know before the traversal is: Node A, REL1, REL2, REL3, REL4..(sometime we even know the end node E) So how can we get the path A to E? I can't seem to achieve it using evaluator and/or relationships in TraversalDescription. It always returns me nodes X, P,Q since they have one my relationships(REL1, REL3). REL1REL2REL8 A - X - Y --- Z REL1 REL2REL3REL4 A - B - C --- D - E REL1 REL3 REL9 REL10 A - P - Q --- R - E Nodes: A, B, C, D,E,X,Y,Z,P,Q,R, Relations: REL1REL10 Thank you for your help. John ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] about error
In fact, arrays of primitives+Strings are supported, but not List or
Collection or anything like that is.
2011/1/25 Peter Neubauer peter.neuba...@neotechnology.com
Jose,
Arrays of objects are not supported as properties. In that case, you
should probably either model these as Nodes and Relationships, or
serialize them into a String and that way persist the List.
An example of using Spring to model Sets is in
https://github.com/SpringSource/spring-data-graph-examples/blob/master/imdb/src/main/java/org/neo4j/examples/imdb/domain/Actor.java
.
Would that help?
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://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
On Tue, Jan 25, 2011 at 8:16 PM, Jose Angel Inda Herrera
jai...@estudiantes.uci.cu wrote:
Hello list, i hope that all are fine,
i have this code ,
public class Particion()
{
LinkedListClaseEquivalencia elements;
Node node;
public Particion(Node node)
{
this.node = node;
this.node.setProperty(elements, elements);
}
...
}
and me compiler return,
Exception in thread main java.lang.IllegalArgumentException: Unknown
property type on: []
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Mattias Persson, [matt...@neotechnology.com]
Hacker, Neo Technology
www.neotechnology.com
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Re: [Neo4j] Traversal Question
Hi John, The graph algorithms package has a some useful features for path finding (e.g. shortest path). Do any of the approaches in http://components.neo4j.org/graph-algo/ seem useful to you? Or do you think that a custom traverser is necessary instead? Jim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Neo4j 1.2 server on Linux X86 - 64 bit
Joshi, I am a bit suspicious of your wrapper.log, STATUS | wrapper | 2011/01/24 11:34:47 | Launching a JVM... INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: Initializing... INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: WARNING - Unable to load the Wrapper's native library because none of the INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: following files: INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: libwrapper-linux-x86-64.so INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: libwrapper.so INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: could be located on the following java.library.path: INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: /home/hjoshi/neo4j-1.2/bin/lib INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: Please see the documentation for the wrapper.java.library.path INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: configuration property. INFO | jvm 1| 2011/01/24 11:34:47 | WrapperManager: System signals will not be handled correctly. but that should not be fatal. It seems you are accessing the webadmin from outside localhost with the external name? In that case, you should tell the external address in the conf/neo4j-server.properties: # REST endpoint for the data API # Note the / in the end is mandatory org.neo4j.server.webadmin.data.uri=http://localhost:7474/db/data/ # REST endpoint of the administration API (used by Webadmin) org.neo4j.server.webadmin.management.uri=http://localhost:7474/db/manage/ should be changed to # REST endpoint for the data API # Note the / in the end is mandatory org.neo4j.server.webadmin.data.uri=http://gigdev8028.gig.acxiom.net:7474/db/data/ # REST endpoint of the administration API (used by Webadmin) org.neo4j.server.webadmin.management.uri=http://gigdev8028.gig.acxiom.net:7474/db/manage/ Does that change things for the webadmin? 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://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Sat, Jan 22, 2011 at 9:08 AM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Joshi, Could youy send over the contents of the log files under data/log to me in order to take a look? /peter On Friday, January 21, 2011, Joshi Hemant - hjoshi hemant.jo...@acxiom.com wrote: I downloaded Neo4j 1.2 release for linux from http://neo4j.org/get?file=neo4j-1.2-unix.tar.gz and extracted it to a directory using tar -zxvf file. I installed the service using bin/neo4j install option. Next, I followed documentation at http://wiki.neo4j.org/content/Getting_Started_With_Neo4j_Server. After the neo4j server is started successfully, when I try the curl command curl -H Accept:application/json http://localhost:7474/db/data/ I get the following response: HTML HEADTITLERedirection/TITLE/HEAD BODYH1Redirect/H1/BODY Also from firefox, when I try to access webadmin at http://gigdev8028.gig.acxiom.net:7474/webadmin/ I get the following error message: Server connection lost Attempting to re-establish connection.. I have not changed any config files. uname-a command returns the following: 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux The 2 log files neo4j.log and wrapper.log under data/log directory do not show any error messages. Am I missing something? -Hemant *** The information contained in this communication is confidential, is intended only for the use of the recipient named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please resend this communication to the sender and delete the original message or any copy of it from your computer system. Thank You. ___ 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
