Re: [Neo4j] some questions
Thanks Peter Cheers, From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Monday, November 21, 2011 4:41 AM Subject: Re: [Neo4j] some questions Andrew, I think you could set up the Webadmin over your embedded project like http://docs.neo4j.org/chunked/snapshot/server-embedded.html maybe as part of a unit test, and then start modifying the layout using the coffeescript and template infrastructure under https://github.com/neo4j/community/tree/master/server/src/main/resources/webadmin-html and https://github.com/neo4j/community/tree/master/server/src/main/coffeescript Look at https://github.com/neo4j/community/tree/master/server README for how to run the coffeescript compilation. I guess Jake might have more pointers. 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 - NOSQL for the Enterprise. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. On Fri, Oct 28, 2011 at 5:30 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I think I go to the direction of implementing a REST endpoint in Java. How about my first question about customizing the Admin page? Thanks, Andrew From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Friday, October 28, 2011 8:05 AM Subject: Re: [Neo4j] some questions Andrew, that sounds like a traversal you need to do to find exactly the nodes you need and remove them. As Marko mentioned - either script it in Gremlin/Groovy, or implement a REST endpoint in Java, giving you full static powaah: http://docs.neo4j.org/chunked/snapshot/server-plugins.html Does that work? 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 - NOSQL for the Enterprise. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. On Fri, Oct 28, 2011 at 3:02 PM, andrew ton andrewt...@yahoo.com wrote: Yes, that's what I have been doing :) However what if I have 2 graphs under a root node and I just want to remove 1 graph and leave the other alone. Any suggestions? Thanks, From: Linan Wang tali.w...@gmail.com To: Neo4j user discussions user@lists.neo4j.org Sent: Friday, October 28, 2011 7:59 AM Subject: Re: [Neo4j] some questions to clear the full db, stop the server and delete the files in data folder :) On Fri, Oct 28, 2011 at 3:57 PM, Marko Rodriguez okramma...@gmail.com wrote: Hi, 2. Assume I have a big graph in the REST server, what is the best way to remove the whole graph? Of course deleting each node and its relationships and its index is not convenient. Via Gremlin Plugin, you can call g.clear(). HTH, Marko. http://markorodriguez.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Best wishes, Linan Wang Architect, Programmer, PhD ___ 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 ___ 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
Re: [Neo4j] Neo4j REST server's log files
Hi David, I'm happy to. Do we use skype? Thanks, A. From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 9:34 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Would you like to do a screen sharing session with me Friday PST? That way, I could assess your problem better. Thanks, David On Thu, Nov 10, 2011 at 4:23 PM, andrew ton andrewt...@yahoo.com wrote: What I meant the server stops responding to my application's request was my application received a NoHttpResponseException. This is the output in the Eclipse console: -Uploading /doc/test/ont/Ontology1320789957941.owl to Neo4J... Nov 10, 2011 3:46:52 PM org.restlet.ext.httpclient.HttpClientHelper start INFO: Starting the Apache HTTP client Root node of ontology Ontology1320789957941.owl: http://localhost:7474/db/data/index/node/my_index/name/Ontology1320789957941 Find node: http://localhost:7474/db/data/index/node/my_index/name/super_node Processing triple - http://localhost:7474/db/data/node/1,CONTAINS,http://localhost:7474/db/data/node/147 Find node: http://localhost:7474/db/data/index/node/my_index/name/lowEnergy Nov 10, 2011 3:47:22 PM org.restlet.ext.httpclient.internal.HttpMethodCall sendRequest WARNING: An error occurred during the communication with the remote HTTP server. org.apache.http.NoHttpResponseException: The target server failed to respond at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:101) If I upload only a few ontologies (no problems) and the log/neo4j.x.x.log showed the server processed the lowEnergy node : Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: REQUEST /db/data/node/1/relationships/out/CONTAINS on org.mortbay.jetty.HttpConnection@237dc815 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: session=null Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: chain=org.neo4j.server.statistic.StatisticFilter-org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet holder=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call filter org.neo4j.server.statistic.StatisticFilter Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call servlet org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: RESPONSE /db/data/node/1/relationships/out/CONTAINS 200] Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: REQUEST /db/data/node/1/relationships on org.mortbay.jetty.HttpConnection@237dc815 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: session=null Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: chain=org.neo4j.server.statistic.StatisticFilter-org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet holder=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call filter org.neo4j.server.statistic.StatisticFilter Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call servlet org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: RESPONSE /db/data/node/1/relationships 201 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: REQUEST /db/manage/server/monitor/fetch/1320942809 on org.mortbay.jetty.HttpConnection@66e90097 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: Got Session ID 9fdtr96dq71c1iqw1b8416rpc from cookie Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: session=null Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet=org.neo4j.server.web.NeoServletContainer-1301864188 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: chain=org.neo4j.server.statistic.StatisticFilter-org.neo4j.server.web.NeoServletContainer-1301864188 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet holder=org.neo4j.server.web.NeoServletContainer-1301864188 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call filter
Re: [Neo4j] Neo4j REST server's log files
Hi David, Anytime in the afternoon is fine to me. How about 2:30pm? Andrew From: David Montag david.mon...@neotechnology.com To: UserList user@lists.neo4j.org Sent: Friday, November 11, 2011 8:59 AM Subject: Re: [Neo4j] Neo4j REST server's log files Yup, Skype is good. Does some time in the afternoon PST work for you? David On Fri, Nov 11, 2011 at 3:11 AM, andrew ton andrewt...@yahoo.com wrote: Hi David, I'm happy to. Do we use skype? Thanks, A. From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 9:34 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Would you like to do a screen sharing session with me Friday PST? That way, I could assess your problem better. Thanks, David On Thu, Nov 10, 2011 at 4:23 PM, andrew ton andrewt...@yahoo.com wrote: What I meant the server stops responding to my application's request was my application received a NoHttpResponseException. This is the output in the Eclipse console: -Uploading /doc/test/ont/Ontology1320789957941.owl to Neo4J... Nov 10, 2011 3:46:52 PM org.restlet.ext.httpclient.HttpClientHelper start INFO: Starting the Apache HTTP client Root node of ontology Ontology1320789957941.owl: http://localhost:7474/db/data/index/node/my_index/name/Ontology1320789957941 Find node: http://localhost:7474/db/data/index/node/my_index/name/super_node Processing triple - http://localhost:7474/db/data/node/1,CONTAINS,http://localhost:7474/db/data/node/147 Find node: http://localhost:7474/db/data/index/node/my_index/name/lowEnergy Nov 10, 2011 3:47:22 PM org.restlet.ext.httpclient.internal.HttpMethodCall sendRequest WARNING: An error occurred during the communication with the remote HTTP server. org.apache.http.NoHttpResponseException: The target server failed to respond at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:101) If I upload only a few ontologies (no problems) and the log/neo4j.x.x.log showed the server processed the lowEnergy node : Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: REQUEST /db/data/node/1/relationships/out/CONTAINS on org.mortbay.jetty.HttpConnection@237dc815 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: session=null Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: chain=org.neo4j.server.statistic.StatisticFilter-org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet holder=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call filter org.neo4j.server.statistic.StatisticFilter Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call servlet org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: RESPONSE /db/data/node/1/relationships/out/CONTAINS 200] Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: REQUEST /db/data/node/1/relationships on org.mortbay.jetty.HttpConnection@237dc815 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: session=null Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: chain=org.neo4j.server.statistic.StatisticFilter-org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet holder=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call filter org.neo4j.server.statistic.StatisticFilter Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call servlet org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: RESPONSE /db/data/node/1/relationships 201 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: REQUEST /db/manage/server/monitor/fetch/1320942809 on org.mortbay.jetty.HttpConnection@66e90097 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: Got Session ID 9fdtr96dq71c1iqw1b8416rpc from cookie Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:52 PM
Re: [Neo4j] Neo4j REST server's log files
Great, see you. Andrew From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Friday, November 11, 2011 10:00 AM Subject: Re: [Neo4j] Neo4j REST server's log files That works. See ya then. I'm ddmontag on Skype. David On Fri, Nov 11, 2011 at 9:55 AM, andrew ton andrewt...@yahoo.com wrote: Hi David, Anytime in the afternoon is fine to me. How about 2:30pm? Andrew From: David Montag david.mon...@neotechnology.com To: UserList user@lists.neo4j.org Sent: Friday, November 11, 2011 8:59 AM Subject: Re: [Neo4j] Neo4j REST server's log files Yup, Skype is good. Does some time in the afternoon PST work for you? David On Fri, Nov 11, 2011 at 3:11 AM, andrew ton andrewt...@yahoo.com wrote: Hi David, I'm happy to. Do we use skype? Thanks, A. From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 9:34 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Would you like to do a screen sharing session with me Friday PST? That way, I could assess your problem better. Thanks, David On Thu, Nov 10, 2011 at 4:23 PM, andrew ton andrewt...@yahoo.com wrote: What I meant the server stops responding to my application's request was my application received a NoHttpResponseException. This is the output in the Eclipse console: -Uploading /doc/test/ont/Ontology1320789957941.owl to Neo4J... Nov 10, 2011 3:46:52 PM org.restlet.ext.httpclient.HttpClientHelper start INFO: Starting the Apache HTTP client Root node of ontology Ontology1320789957941.owl: http://localhost:7474/db/data/index/node/my_index/name/Ontology1320789957941 Find node: http://localhost:7474/db/data/index/node/my_index/name/super_node Processing triple - http://localhost:7474/db/data/node/1,CONTAINS,http://localhost:7474/db/data/node/147 Find node: http://localhost:7474/db/data/index/node/my_index/name/lowEnergy Nov 10, 2011 3:47:22 PM org.restlet.ext.httpclient.internal.HttpMethodCall sendRequest WARNING: An error occurred during the communication with the remote HTTP server. org.apache.http.NoHttpResponseException: The target server failed to respond at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:101) If I upload only a few ontologies (no problems) and the log/neo4j.x.x.log showed the server processed the lowEnergy node : Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: REQUEST /db/data/node/1/relationships/out/CONTAINS on org.mortbay.jetty.HttpConnection@237dc815 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: session=null Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: chain=org.neo4j.server.statistic.StatisticFilter-org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet holder=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call filter org.neo4j.server.statistic.StatisticFilter Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call servlet org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: RESPONSE /db/data/node/1/relationships/out/CONTAINS 200] Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: REQUEST /db/data/node/1/relationships on org.mortbay.jetty.HttpConnection@237dc815 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: session=null Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: chain=org.neo4j.server.statistic.StatisticFilter-org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: servlet holder=org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call filter org.neo4j.server.statistic.StatisticFilter Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE: call servlet org.neo4j.server.web.NeoServletContainer-1130213695 Nov 10, 2011 3:46:52 PM org.mortbay.log.Slf4jLog debug FINE
Re: [Neo4j] Neo4j REST server's log files
Hi David, Thank you for getting back to me! Finally I can make it work by changing the log level from INFO (by default) to FINEST in the logging.property. I have a question for you though. Currently my project have a problem with uploading data to the store. I created only 1 index for the whole application and the node name as the key. Several nodes in different ontologies have the same names. So when an ontology is uploaded to the store and has a node that its name has been already in the index (by previous ontologies) this node is not created in the graph of this ontology. My app can upload a number of ontologies and graphs are created successfully for each ontology in the store. However when the process uploads the 9th ontology the store does not respond and it seems busy with some internal process like looking up the node in the index or something else. I'm stuck and don't know the cause of the problem. Do you have any clue or suggestions? Appreciate your help! Regards, From: David Montag david.mon...@neotechnology.com To: Peter Neubauer peter.neuba...@neotechnology.com Cc: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 10:07 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Let's connect during the day tomorrow for a higher-bandwidth discussion. Do you have Skype? Thanks, David On Wed, Nov 9, 2011 at 1:23 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Andrew, this sounds like the RRD database in the server got broken. Could you delete data/rrd and start up again? Also, David is in your timezone and maybe can connect with you directly to look into this? 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 - NOSQL for the Enterprise. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. On Wed, Nov 9, 2011 at 10:07 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I don't understand much your question. However, in my Restlet application I have a logging service using Java log to record all processes in my app. My problem is that I upload 20 ontologies and after serveral ontologies the Neo4J stops responding my REST request. It seems busy with some index lookup process. Consequently my app throws a NoHttpResponseException: The target server failed to respond. I'd like to see what causes the problem inside Neo4J. Unfortunately both messages.log and neo4j.x.x.log do not show run time processes. BTW, when I start up the server the neo4j.x.x.log shows INFO: Server started on [http://localhost:7474/] Nov 9, 2011 10:22:22 AM org.neo4j.server.logging.Logger log WARNING: java.lang.IllegalArgumentException: Bad sample time: 1320862942. Last update time was 1320862942, at least one second step is required at org.rrd4j.core.RrdDb.store(RrdDb.java:553) at org.rrd4j.core.Sample.update(Sample.java:197) at org.neo4j.server.rrd.RrdSamplerImpl.updateSample(RrdSamplerImpl.java:62) at org.neo4j.server.rrd.RrdFactory$1.updateSample(RrdFactory.java:109) at org.neo4j.server.rrd.RrdJob.run(RrdJob.java:43) at org.neo4j.server.rrd.ScheduledJob$1.run(ScheduledJob.java:41) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.webadmin.rest Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Root resource classes found: class org.neo4j.server.webadmin.rest.MonitorService class org.neo4j.server.webadmin.rest.RootService class org.neo4j.server.webadmin.rest.JmxService class org.neo4j.server.webadmin.rest.ConsoleService Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.ScanningResourceConfig init INFO: No provider classes found. Nov 9, 2011 12:43:44 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM' Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.rest.web Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Root resource classes found: class org.neo4j.server.rest.web.ResourcesService class org.neo4j.server.rest.web.BatchOperationService class org.neo4j.server.rest.web.RestfulGraphDatabase class org.neo4j.server.rest.web.DatabaseMetadataService class org.neo4j.server.rest.web.ExtensionService Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Provider
Re: [Neo4j] Neo4j REST server's log files
Hi David, Please read my answers inline below. From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 11:39 AM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Good to hear that you got the logging sorted out. Regarding the actual issues, it sounds like you're describing two different things. One is that you index ontology nodes in one global index and therefore run into conflicts. The other is that the upload appears to stall for some reason. Regarding the global index, did you intend to design the system that way, or do you really want a separate index for each ontology? It sounds like that would be reasonable. Since the application requirements have changed I think it is better to create an index for each ontology. As for the stalled upload, a thread dump during the slow processing would be most helpful. On a Linux system, you can capture that by doing kill -3 pid on the Java process. It should then go to console.log. I'll try it. Thanks! Thanks, David On Thu, Nov 10, 2011 at 8:21 AM, andrew ton andrewt...@yahoo.com wrote: Hi David, Thank you for getting back to me! Finally I can make it work by changing the log level from INFO (by default) to FINEST in the logging.property. I have a question for you though. Currently my project have a problem with uploading data to the store. I created only 1 index for the whole application and the node name as the key. Several nodes in different ontologies have the same names. So when an ontology is uploaded to the store and has a node that its name has been already in the index (by previous ontologies) this node is not created in the graph of this ontology. My app can upload a number of ontologies and graphs are created successfully for each ontology in the store. However when the process uploads the 9th ontology the store does not respond and it seems busy with some internal process like looking up the node in the index or something else. I'm stuck and don't know the cause of the problem. Do you have any clue or suggestions? Appreciate your help! Regards, From: David Montag david.mon...@neotechnology.com To: Peter Neubauer peter.neuba...@neotechnology.com Cc: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 10:07 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Let's connect during the day tomorrow for a higher-bandwidth discussion. Do you have Skype? Thanks, David On Wed, Nov 9, 2011 at 1:23 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Andrew, this sounds like the RRD database in the server got broken. Could you delete data/rrd and start up again? Also, David is in your timezone and maybe can connect with you directly to look into this? 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 - NOSQL for the Enterprise. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. On Wed, Nov 9, 2011 at 10:07 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I don't understand much your question. However, in my Restlet application I have a logging service using Java log to record all processes in my app. My problem is that I upload 20 ontologies and after serveral ontologies the Neo4J stops responding my REST request. It seems busy with some index lookup process. Consequently my app throws a NoHttpResponseException: The target server failed to respond. I'd like to see what causes the problem inside Neo4J. Unfortunately both messages.log and neo4j.x.x.log do not show run time processes. BTW, when I start up the server the neo4j.x.x.log shows INFO: Server started on [http://localhost:7474/] Nov 9, 2011 10:22:22 AM org.neo4j.server.logging.Logger log WARNING: java.lang.IllegalArgumentException: Bad sample time: 1320862942. Last update time was 1320862942, at least one second step is required at org.rrd4j.core.RrdDb.store(RrdDb.java:553) at org.rrd4j.core.Sample.update(Sample.java:197) at org.neo4j.server.rrd.RrdSamplerImpl.updateSample(RrdSamplerImpl.java:62) at org.neo4j.server.rrd.RrdFactory$1.updateSample(RrdFactory.java:109) at org.neo4j.server.rrd.RrdJob.run(RrdJob.java:43) at org.neo4j.server.rrd.ScheduledJob$1.run(ScheduledJob.java:41) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.webadmin.rest Nov 9, 2011 12:43:44 PM
Re: [Neo4j] Neo4j REST server's log files
Hi David, I increased the memory settings in neo4j-wrapper.conf as below # Initial Java Heap Size (in MB) wrapper.java.initmemory=30 # Maximum Java Heap Size (in MB) wrapper.java.maxmemory=1024 However the same problem is still happening. I attach the thread dump to this mail. I appreciate it if you tell me what's wrong based on the thread dump. Thank you! From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 11:39 AM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Good to hear that you got the logging sorted out. Regarding the actual issues, it sounds like you're describing two different things. One is that you index ontology nodes in one global index and therefore run into conflicts. The other is that the upload appears to stall for some reason. Regarding the global index, did you intend to design the system that way, or do you really want a separate index for each ontology? It sounds like that would be reasonable. As for the stalled upload, a thread dump during the slow processing would be most helpful. On a Linux system, you can capture that by doing kill -3 pid on the Java process. It should then go to console.log. Thanks, David On Thu, Nov 10, 2011 at 8:21 AM, andrew ton andrewt...@yahoo.com wrote: Hi David, Thank you for getting back to me! Finally I can make it work by changing the log level from INFO (by default) to FINEST in the logging.property. I have a question for you though. Currently my project have a problem with uploading data to the store. I created only 1 index for the whole application and the node name as the key. Several nodes in different ontologies have the same names. So when an ontology is uploaded to the store and has a node that its name has been already in the index (by previous ontologies) this node is not created in the graph of this ontology. My app can upload a number of ontologies and graphs are created successfully for each ontology in the store. However when the process uploads the 9th ontology the store does not respond and it seems busy with some internal process like looking up the node in the index or something else. I'm stuck and don't know the cause of the problem. Do you have any clue or suggestions? Appreciate your help! Regards, From: David Montag david.mon...@neotechnology.com To: Peter Neubauer peter.neuba...@neotechnology.com Cc: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 10:07 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Let's connect during the day tomorrow for a higher-bandwidth discussion. Do you have Skype? Thanks, David On Wed, Nov 9, 2011 at 1:23 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Andrew, this sounds like the RRD database in the server got broken. Could you delete data/rrd and start up again? Also, David is in your timezone and maybe can connect with you directly to look into this? 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 - NOSQL for the Enterprise. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. On Wed, Nov 9, 2011 at 10:07 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I don't understand much your question. However, in my Restlet application I have a logging service using Java log to record all processes in my app. My problem is that I upload 20 ontologies and after serveral ontologies the Neo4J stops responding my REST request. It seems busy with some index lookup process. Consequently my app throws a NoHttpResponseException: The target server failed to respond. I'd like to see what causes the problem inside Neo4J. Unfortunately both messages.log and neo4j.x.x.log do not show run time processes. BTW, when I start up the server the neo4j.x.x.log shows INFO: Server started on [http://localhost:7474/] Nov 9, 2011 10:22:22 AM org.neo4j.server.logging.Logger log WARNING: java.lang.IllegalArgumentException: Bad sample time: 1320862942. Last update time was 1320862942, at least one second step is required at org.rrd4j.core.RrdDb.store(RrdDb.java:553) at org.rrd4j.core.Sample.update(Sample.java:197) at org.neo4j.server.rrd.RrdSamplerImpl.updateSample(RrdSamplerImpl.java:62) at org.neo4j.server.rrd.RrdFactory$1.updateSample(RrdFactory.java:109) at org.neo4j.server.rrd.RrdJob.run(RrdJob.java:43) at org.neo4j.server.rrd.ScheduledJob$1.run(ScheduledJob.java:41) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) Nov 9, 2011 12:43:44 PM
Re: [Neo4j] Neo4j REST server's log files
Hi David, The total size of files stored into the db when the problem happened was only 800KB. My RAM is 4G. I ran the kill command when the problem happened because it just stopped and I did not notice slowness. I will increase the heap to 512MB and test again. Thanks, Andrew From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 3:00 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, I don't see anything running in that thread dump. No threads are processing requests. Are you sure it's taking a long time, or is it maybe finished? Try capturing the thread dump exactly when you experience slowness. I'd also suggest bumping the initial heap to at least 512MB or something like that. How much RAM do you have? How much data are you inserting? Thanks, David On Thu, Nov 10, 2011 at 2:56 PM, andrew ton andrewt...@yahoo.com wrote: Hi David, I increased the memory settings in neo4j-wrapper.conf as below # Initial Java Heap Size (in MB) wrapper.java.initmemory=30 # Maximum Java Heap Size (in MB) wrapper.java.maxmemory=1024 However the same problem is still happening. I attach the thread dump to this mail. I appreciate it if you tell me what's wrong based on the thread dump. Thank you! From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 11:39 AM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Good to hear that you got the logging sorted out. Regarding the actual issues, it sounds like you're describing two different things. One is that you index ontology nodes in one global index and therefore run into conflicts. The other is that the upload appears to stall for some reason. Regarding the global index, did you intend to design the system that way, or do you really want a separate index for each ontology? It sounds like that would be reasonable. As for the stalled upload, a thread dump during the slow processing would be most helpful. On a Linux system, you can capture that by doing kill -3 pid on the Java process. It should then go to console.log. Thanks, David On Thu, Nov 10, 2011 at 8:21 AM, andrew ton andrewt...@yahoo.com wrote: Hi David, Thank you for getting back to me! Finally I can make it work by changing the log level from INFO (by default) to FINEST in the logging.property. I have a question for you though. Currently my project have a problem with uploading data to the store. I created only 1 index for the whole application and the node name as the key. Several nodes in different ontologies have the same names. So when an ontology is uploaded to the store and has a node that its name has been already in the index (by previous ontologies) this node is not created in the graph of this ontology. My app can upload a number of ontologies and graphs are created successfully for each ontology in the store. However when the process uploads the 9th ontology the store does not respond and it seems busy with some internal process like looking up the node in the index or something else. I'm stuck and don't know the cause of the problem. Do you have any clue or suggestions? Appreciate your help! Regards, From: David Montag david.mon...@neotechnology.com To: Peter Neubauer peter.neuba...@neotechnology.com Cc: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 10:07 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Let's connect during the day tomorrow for a higher-bandwidth discussion. Do you have Skype? Thanks, David On Wed, Nov 9, 2011 at 1:23 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Andrew, this sounds like the RRD database in the server got broken. Could you delete data/rrd and start up again? Also, David is in your timezone and maybe can connect with you directly to look into this? 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 - NOSQL for the Enterprise. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. On Wed, Nov 9, 2011 at 10:07 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I don't understand much your question. However, in my Restlet application I have a logging service using Java log to record all processes in my app. My problem is that I upload 20 ontologies and after serveral ontologies the Neo4J stops responding my REST request. It seems busy with some index lookup process. Consequently my app throws
Re: [Neo4j] Neo4j REST server's log files
/fetch/1320942588 on org.mortbay.jetty.HttpConnection@66e90097 Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: Got Session ID 9fdtr96dq71c1iqw1b8416rpc from cookie Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: sessionManager=org.mortbay.jetty.servlet.HashSessionManager@375e293a Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: session=null Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: servlet=org.neo4j.server.web.NeoServletContainer-1301864188 Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: chain=org.neo4j.server.statistic.StatisticFilter-org.neo4j.server.web.NeoServletContainer-1301864188 Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: servlet holder=org.neo4j.server.web.NeoServletContainer-1301864188 Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: call filter org.neo4j.server.statistic.StatisticFilter Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: call servlet org.neo4j.server.web.NeoServletContainer-1301864188 Nov 10, 2011 3:46:53 PM org.mortbay.log.Slf4jLog debug FINE: RESPONSE /db/manage/server/monitor/fetch/1320942588 200 and the server displays a request for next node in my ontology. But when I upload many ontology then when the problem happened the server keeps displaying blocks of request for fetch like FINE: REQUEST /db/manage/server/monitor/fetch/ on org.mortbay.jetty.HttpConnection@66e90097 Sorry for this long mail. I have no clue what causes the problem. Thank you very much, Regards From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 3:31 PM Subject: Re: [Neo4j] Neo4j REST server's log files Can you describe how you see that it stops? Because the thread dump isn't showing anything of significance running. David On Thu, Nov 10, 2011 at 3:28 PM, andrew ton andrewt...@yahoo.com wrote: Hi David, The total size of files stored into the db when the problem happened was only 800KB. My RAM is 4G. I ran the kill command when the problem happened because it just stopped and I did not notice slowness. I will increase the heap to 512MB and test again. Thanks, Andrew From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 3:00 PM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, I don't see anything running in that thread dump. No threads are processing requests. Are you sure it's taking a long time, or is it maybe finished? Try capturing the thread dump exactly when you experience slowness. I'd also suggest bumping the initial heap to at least 512MB or something like that. How much RAM do you have? How much data are you inserting? Thanks, David On Thu, Nov 10, 2011 at 2:56 PM, andrew ton andrewt...@yahoo.com wrote: Hi David, I increased the memory settings in neo4j-wrapper.conf as below # Initial Java Heap Size (in MB) wrapper.java.initmemory=30 # Maximum Java Heap Size (in MB) wrapper.java.maxmemory=1024 However the same problem is still happening. I attach the thread dump to this mail. I appreciate it if you tell me what's wrong based on the thread dump. Thank you! From: David Montag david.mon...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, November 10, 2011 11:39 AM Subject: Re: [Neo4j] Neo4j REST server's log files Hi Andrew, Good to hear that you got the logging sorted out. Regarding the actual issues, it sounds like you're describing two different things. One is that you index ontology nodes in one global index and therefore run into conflicts. The other is that the upload appears to stall for some reason. Regarding the global index, did you intend to design the system that way, or do you really want a separate index for each ontology? It sounds like that would be reasonable. As for the stalled upload, a thread dump during the slow processing would be most helpful. On a Linux system, you can capture that by doing kill -3 pid on the Java process. It should then go to console.log. Thanks, David On Thu, Nov 10, 2011 at 8:21 AM, andrew ton andrewt...@yahoo.com wrote: Hi David, Thank you for getting back to me! Finally I can make it work by changing the log level from INFO (by default) to FINEST in the logging.property. I have a question for you though. Currently my project have a problem with uploading data to the store. I created only 1 index for the whole application and the node name as the key. Several nodes in different ontologies have the same names. So when an ontology is uploaded to the store and has a node that its name has been already in the index (by previous ontologies) this node
[Neo4j] Neo4j REST server's log files
Hi, What log files of the Neo4J REST server can I use to check what's going on in the server? The log/console.log and neo4j.x.x.log do not show transactions in the run time. I also looked into graph.db/tm_tx_log.x but I did not learn anything from there. Can somebody give me some pointers? Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Neo4j REST server's log files
Thanks Peter! BR, From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 8:46 AM Subject: Re: [Neo4j] Neo4j REST server's log files Andrew, The database logs are in data/graphdb / messages.log On Nov 9, 2011 5:39 PM, andrew ton andrewt...@yahoo.com wrote: Hi, What log files of the Neo4J REST server can I use to check what's going on in the server? The log/console.log and neo4j.x.x.log do not show transactions in the run time. I also looked into graph.db/tm_tx_log.x but I did not learn anything from there. Can somebody give me some pointers? Thanks, ___ 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
Re: [Neo4j] Neo4j REST server's log files
Hi Peter, I tried the messages.log but it only showed processes up to the time when the server is up 2011-11-09 08:59:19.669-0800: --- CONFIGURATION END --- 2011-11-09 08:59:19.733-0800: Extension org.neo4j.kernel.KernelExtension[kernel jmx] loaded ok 2011-11-09 08:59:19.857-0800: Extension org.neo4j.kernel.KernelExtension[shell] loaded ok 2011-11-09 08:59:19.858-0800: Extension org.neo4j.kernel.KernelExtension[kernel udc] loaded ok The manual shows that the logging is configured in conf/logging.properties (java.util.logging.FileHandler.pattern=data/log/neo4j.%u.%g.log). I'm using the default settings but the log file was not updated in the run time. My purpose is that I want to see what is wrong when I failed to store an ontology into Neo4J. Please help me out! Thanks and regards, From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 8:46 AM Subject: Re: [Neo4j] Neo4j REST server's log files Andrew, The database logs are in data/graphdb / messages.log On Nov 9, 2011 5:39 PM, andrew ton andrewt...@yahoo.com wrote: Hi, What log files of the Neo4J REST server can I use to check what's going on in the server? The log/console.log and neo4j.x.x.log do not show transactions in the run time. I also looked into graph.db/tm_tx_log.x but I did not learn anything from there. Can somebody give me some pointers? Thanks, ___ 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
Re: [Neo4j] Neo4j REST server's log files
Hi Peter, I don't understand much your question. However, in my Restlet application I have a logging service using Java log to record all processes in my app. My problem is that I upload 20 ontologies and after serveral ontologies the Neo4J stops responding my REST request. It seems busy with some index lookup process. Consequently my app throws a NoHttpResponseException: The target server failed to respond. I'd like to see what causes the problem inside Neo4J. Unfortunately both messages.log and neo4j.x.x.log do not show run time processes. BTW, when I start up the server the neo4j.x.x.log shows INFO: Server started on [http://localhost:7474/] Nov 9, 2011 10:22:22 AM org.neo4j.server.logging.Logger log WARNING: java.lang.IllegalArgumentException: Bad sample time: 1320862942. Last update time was 1320862942, at least one second step is required at org.rrd4j.core.RrdDb.store(RrdDb.java:553) at org.rrd4j.core.Sample.update(Sample.java:197) at org.neo4j.server.rrd.RrdSamplerImpl.updateSample(RrdSamplerImpl.java:62) at org.neo4j.server.rrd.RrdFactory$1.updateSample(RrdFactory.java:109) at org.neo4j.server.rrd.RrdJob.run(RrdJob.java:43) at org.neo4j.server.rrd.ScheduledJob$1.run(ScheduledJob.java:41) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.webadmin.rest Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Root resource classes found: class org.neo4j.server.webadmin.rest.MonitorService class org.neo4j.server.webadmin.rest.RootService class org.neo4j.server.webadmin.rest.JmxService class org.neo4j.server.webadmin.rest.ConsoleService Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.ScanningResourceConfig init INFO: No provider classes found. Nov 9, 2011 12:43:44 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM' Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.rest.web Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Root resource classes found: class org.neo4j.server.rest.web.ResourcesService class org.neo4j.server.rest.web.BatchOperationService class org.neo4j.server.rest.web.RestfulGraphDatabase class org.neo4j.server.rest.web.DatabaseMetadataService class org.neo4j.server.rest.web.ExtensionService Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Provider classes found: class org.neo4j.server.rest.web.DatabaseBlockedExceptionMapper Nov 9, 2011 12:43:45 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM' Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.rest.discovery Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Root resource classes found: class org.neo4j.server.rest.discovery.DiscoveryService Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig init INFO: No provider classes found. Nov 9, 2011 12:43:45 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM' Sorry for this long mail. Thanks, From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 10:29 AM Subject: Re: [Neo4j] Neo4j REST server's log files Andrew, Go you have the generating code somewhere you check and reproduce? On Nov 9, 2011 6:26 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I tried the messages.log but it only showed processes up to the time when the server is up 2011-11-09 08:59:19.669-0800: --- CONFIGURATION END --- 2011-11-09 08:59:19.733-0800: Extension org.neo4j.kernel.KernelExtension[kernel jmx] loaded ok 2011-11-09 08:59:19.857-0800: Extension org.neo4j.kernel.KernelExtension[shell] loaded ok 2011-11-09 08:59:19.858-0800: Extension org.neo4j.kernel.KernelExtension[kernel udc] loaded ok The manual shows that the logging is configured in conf/logging.properties (java.util.logging.FileHandler.pattern=data/log/neo4j.%u.%g.log). I'm using the default settings but the log file was not updated in the run time. My purpose is that I want to see what is wrong when I failed to store an ontology into Neo4J. Please help me out! Thanks and regards, From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j
Re: [Neo4j] Neo4j REST server's log files
Hi, I also looked into console.log and what I saw was 11/9/11 12:43:43 PM org.neo4j.server.NeoServerWithEmbeddedWebServer INFO: Starting Neo Server on port [7474] with [80] threads available 11/9/11 12:43:43 PM org.neo4j.server.database.Database INFO: Using database at /Programming/Projects/Resources/Semantic/NoSQL DataBases/Neo4J/package/neo4j-community-1.5-SNAPSHOT/data/graph.db 11/9/11 12:43:44 PM org.neo4j.server.modules.DiscoveryModule INFO: Mounted discovery module at [/] 11/9/11 12:43:44 PM org.neo4j.server.plugins.PluginManager INFO: Loaded server plugin CypherPlugin 11/9/11 12:43:44 PM org.neo4j.server.plugins.PluginManager INFO: Loaded server plugin GremlinPlugin 11/9/11 12:43:44 PM org.neo4j.server.modules.RESTApiModule INFO: Mounted REST API at [/db/data/] 11/9/11 12:43:44 PM org.neo4j.server.modules.ManagementApiModule INFO: Mounted management API at [/db/manage/] 11/9/11 12:43:44 PM org.neo4j.server.modules.WebAdminModule INFO: Mounted webadmin at [/webadmin] 11/9/11 12:43:44 PM org.neo4j.server.web.Jetty6WebServer INFO: Mounting static content at [/webadmin] from [webadmin-html] 11/9/11 12:43:45 PM org.neo4j.server.statistic.StatisticStartupListener INFO: adding statistic-filter to /webadmin 11/9/11 12:43:45 PM org.neo4j.server.statistic.StatisticStartupListener INFO: adding statistic-filter to /db/manage 11/9/11 12:43:45 PM org.neo4j.server.statistic.StatisticStartupListener INFO: adding statistic-filter to /db/data 11/9/11 12:43:45 PM org.neo4j.server.statistic.StatisticStartupListener INFO: adding statistic-filter to / 11/9/11 12:43:45 PM org.neo4j.server.NeoServerWithEmbeddedWebServer INFO: Server started on [http://localhost:7474/] This log did not show updates in the run time either. Thanks, From: Mattias Persson matt...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 12:38 PM Subject: Re: [Neo4j] Neo4j REST server's log files You want to look at data/log/console.log and data/log/neo4j.0.log (I think it's called). Peter, messages.log isn't for users, it's mainly for forensics/debugging where a neo4j dev can get info by looking at. Neo4j is rather light on the logging in general. Den onsdagen den 9:e november 2011 skrev Peter Neubauer peter.neuba...@neotechnology.com: Andrew, Go you have the generating code somewhere you check and reproduce? On Nov 9, 2011 6:26 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I tried the messages.log but it only showed processes up to the time when the server is up 2011-11-09 08:59:19.669-0800: --- CONFIGURATION END --- 2011-11-09 08:59:19.733-0800: Extension org.neo4j.kernel.KernelExtension[kernel jmx] loaded ok 2011-11-09 08:59:19.857-0800: Extension org.neo4j.kernel.KernelExtension[shell] loaded ok 2011-11-09 08:59:19.858-0800: Extension org.neo4j.kernel.KernelExtension[kernel udc] loaded ok The manual shows that the logging is configured in conf/logging.properties (java.util.logging.FileHandler.pattern=data/log/neo4j.%u.%g.log). I'm using the default settings but the log file was not updated in the run time. My purpose is that I want to see what is wrong when I failed to store an ontology into Neo4J. Please help me out! Thanks and regards, From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 8:46 AM Subject: Re: [Neo4j] Neo4j REST server's log files Andrew, The database logs are in data/graphdb / messages.log On Nov 9, 2011 5:39 PM, andrew ton andrewt...@yahoo.com wrote: Hi, What log files of the Neo4J REST server can I use to check what's going on in the server? The log/console.log and neo4j.x.x.log do not show transactions in the run time. I also looked into graph.db/tm_tx_log.x but I did not learn anything from there. Can somebody give me some pointers? Thanks, ___ 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 ___ 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 ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Neo4j REST server's log files
I'm using 1.5-SNAPSHOT Andrew From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 1:11 PM Subject: Re: [Neo4j] Neo4j REST server's log files Andrew, What neo4j version are you using? On Nov 9, 2011 10:07 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I don't understand much your question. However, in my Restlet application I have a logging service using Java log to record all processes in my app. My problem is that I upload 20 ontologies and after serveral ontologies the Neo4J stops responding my REST request. It seems busy with some index lookup process. Consequently my app throws a NoHttpResponseException: The target server failed to respond. I'd like to see what causes the problem inside Neo4J. Unfortunately both messages.log and neo4j.x.x.log do not show run time processes. BTW, when I start up the server the neo4j.x.x.log shows INFO: Server started on [http://localhost:7474/] Nov 9, 2011 10:22:22 AM org.neo4j.server.logging.Logger log WARNING: java.lang.IllegalArgumentException: Bad sample time: 1320862942. Last update time was 1320862942, at least one second step is required at org.rrd4j.core.RrdDb.store(RrdDb.java:553) at org.rrd4j.core.Sample.update(Sample.java:197) at org.neo4j.server.rrd.RrdSamplerImpl.updateSample(RrdSamplerImpl.java:62) at org.neo4j.server.rrd.RrdFactory$1.updateSample(RrdFactory.java:109) at org.neo4j.server.rrd.RrdJob.run(RrdJob.java:43) at org.neo4j.server.rrd.ScheduledJob$1.run(ScheduledJob.java:41) at java.util.TimerThread.mainLoop(Timer.java:512) at java.util.TimerThread.run(Timer.java:462) Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.webadmin.rest Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Root resource classes found: class org.neo4j.server.webadmin.rest.MonitorService class org.neo4j.server.webadmin.rest.RootService class org.neo4j.server.webadmin.rest.JmxService class org.neo4j.server.webadmin.rest.ConsoleService Nov 9, 2011 12:43:44 PM com.sun.jersey.api.core.ScanningResourceConfig init INFO: No provider classes found. Nov 9, 2011 12:43:44 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM' Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.rest.web Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Root resource classes found: class org.neo4j.server.rest.web.ResourcesService class org.neo4j.server.rest.web.BatchOperationService class org.neo4j.server.rest.web.RestfulGraphDatabase class org.neo4j.server.rest.web.DatabaseMetadataService class org.neo4j.server.rest.web.ExtensionService Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Provider classes found: class org.neo4j.server.rest.web.DatabaseBlockedExceptionMapper Nov 9, 2011 12:43:45 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM' Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.PackagesResourceConfig init INFO: Scanning for root resource and provider classes in the packages: org.neo4j.server.rest.discovery Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses INFO: Root resource classes found: class org.neo4j.server.rest.discovery.DiscoveryService Nov 9, 2011 12:43:45 PM com.sun.jersey.api.core.ScanningResourceConfig init INFO: No provider classes found. Nov 9, 2011 12:43:45 PM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM' Sorry for this long mail. Thanks, From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, November 9, 2011 10:29 AM Subject: Re: [Neo4j] Neo4j REST server's log files Andrew, Go you have the generating code somewhere you check and reproduce? On Nov 9, 2011 6:26 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I tried the messages.log but it only showed processes up to the time when the server is up 2011-11-09 08:59:19.669-0800: --- CONFIGURATION END --- 2011-11-09 08:59:19.733-0800: Extension org.neo4j.kernel.KernelExtension[kernel jmx] loaded ok 2011-11-09 08:59:19.857-0800: Extension org.neo4j.kernel.KernelExtension[shell] loaded ok 2011-11-09 08:59:19.858-0800: Extension org.neo4j.kernel.KernelExtension[kernel udc] loaded ok The manual shows
[Neo4j] Ontology in Neo4J REST db
Hi, My question partly relates to the Neo4J REST db but I think this is the good place to ask because it has experts of semantic ontologies. I'm using OWLAPI to parse my OWL ontology. API gives me triples and I store their Subject, predicate (relationship), and Object into Neo4J db. All individuals in the ontology are stores with their properties successfully. Everything is OK except the Class in the ontology. The subClassOf properties of a class are not stored in the db. Let's take wine.owl as an example. The class Wine is defined like: owl:Class rdf:ID=Wine rdfs:subClassOf rdf:resource=food;PotableLiquid / rdfs:subClassOf owl:Restriction owl:onProperty rdf:resource=#hasMaker / owl:cardinality rdf:datatype=xsd;nonNegativeInteger1/owl:cardinality /owl:Restriction /rdfs:subClassOf rdfs:subClassOf owl:Restriction owl:onProperty rdf:resource=#hasMaker / owl:allValuesFrom rdf:resource=#Winery / /owl:Restriction /rdfs:subClassOf rdfs:subClassOf owl:Restriction owl:onProperty rdf:resource=#madeFromGrape / owl:minCardinality rdf:datatype=xsd;nonNegativeInteger1/owl:minCardinality /owl:Restriction /rdfs:subClassOf /owl:Class The Class Wine is stored as a node in the graph however all information about subClassOf (hasMaker, madeFromGrape...) are not stored. I know that my code using OWLAPI does not handled this information properly so that they can be stored along with the class Wine. Anybody knows how to use OWLAPI or any API that can parse and handle these information of a class definition and store them into the Neo4J db? I also wonder if individuals in the graph are enough for any processes that inquiry the ontology data like Cypher queries. If they are I don't have to worry about the issue above. Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Neo4J REST console
Hi,
I'm using Neo4j REST 1.5 -SNAPSHOT. In the console I always get ==string
matching regex `(?i)\Qrel\E' expected but `(' found even I use the basic query
in the Cypher Cheetsheet like START a = (1) RETURN a ?
Can I use index lookup for a node in the Rest request? For ex: my query is
{query: start school=node:nodes(name=\MySchool\) match
(school)-[:locatedIn]-(location), (school)-[:foundedBy]-(founder) return
school, location, founder}
Thanks,
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Re: [Neo4j] Neo4J REST console
I figured out the problem in the console. I have to write start a = node(1)
return a to make it work
From: andrew ton andrewt...@yahoo.com
To: Neo4j_user user@lists.neo4j.org
Sent: Friday, November 4, 2011 9:16 AM
Subject: [Neo4j] Neo4J REST console
Hi,
I'm using Neo4j REST 1.5 -SNAPSHOT. In the console I always get ==string
matching regex `(?i)\Qrel\E' expected but `(' found even I use the basic query
in the Cypher Cheetsheet like START a = (1) RETURN a ?
Can I use index lookup for a node in the Rest request? For ex: my query is
{query: start school=node:nodes(name=\MySchool\) match
(school)-[:locatedIn]-(location), (school)-[:foundedBy]-(founder) return
school, location, founder}
Thanks,
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[Neo4j] Cypher questions
Hello,
I have some questions regarding Cypher.
1. I have an ontology that defines classes and individuals. I store this
ontology into Neo4J REST db. Is there any ways to find all individuals that
have some given class?
In SPARQL, it can be done like ...WHERE { ?u a :User.}... to find all
instances that have a type of User.
2. Similar to the question#1, if I understand correctly in Cypher I always have
to start with a known node either by its ID or name. If so how to find any
nodes that have some given relationship?
For example, I want to find any nodes that have the the relationship type
go_to_school.
(x)-[:go_to_school]-(n) where (n.name= NotreDame) return x
Thank you,
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[Neo4j] some questions
Hello, I have 2 questions: 1. Is there any way to customize the Admin page of the Neo4J Rest server? For instance, I'd like to add a title of the project on the page. 2. Assume I have a big graph in the REST server, what is the best way to remove the whole graph? Of course deleting each node and its relationships and its index is not convenient. Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] some questions
Yes, that's what I have been doing :) However what if I have 2 graphs under a root node and I just want to remove 1 graph and leave the other alone. Any suggestions? Thanks, From: Linan Wang tali.w...@gmail.com To: Neo4j user discussions user@lists.neo4j.org Sent: Friday, October 28, 2011 7:59 AM Subject: Re: [Neo4j] some questions to clear the full db, stop the server and delete the files in data folder :) On Fri, Oct 28, 2011 at 3:57 PM, Marko Rodriguez okramma...@gmail.com wrote: Hi, 2. Assume I have a big graph in the REST server, what is the best way to remove the whole graph? Of course deleting each node and its relationships and its index is not convenient. Via Gremlin Plugin, you can call g.clear(). HTH, Marko. http://markorodriguez.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Best wishes, Linan Wang Architect, Programmer, PhD ___ 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] some questions
Hi Peter, I think I go to the direction of implementing a REST endpoint in Java. How about my first question about customizing the Admin page? Thanks, Andrew From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Friday, October 28, 2011 8:05 AM Subject: Re: [Neo4j] some questions Andrew, that sounds like a traversal you need to do to find exactly the nodes you need and remove them. As Marko mentioned - either script it in Gremlin/Groovy, or implement a REST endpoint in Java, giving you full static powaah: http://docs.neo4j.org/chunked/snapshot/server-plugins.html Does that work? 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 - NOSQL for the Enterprise. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. On Fri, Oct 28, 2011 at 3:02 PM, andrew ton andrewt...@yahoo.com wrote: Yes, that's what I have been doing :) However what if I have 2 graphs under a root node and I just want to remove 1 graph and leave the other alone. Any suggestions? Thanks, From: Linan Wang tali.w...@gmail.com To: Neo4j user discussions user@lists.neo4j.org Sent: Friday, October 28, 2011 7:59 AM Subject: Re: [Neo4j] some questions to clear the full db, stop the server and delete the files in data folder :) On Fri, Oct 28, 2011 at 3:57 PM, Marko Rodriguez okramma...@gmail.com wrote: Hi, 2. Assume I have a big graph in the REST server, what is the best way to remove the whole graph? Of course deleting each node and its relationships and its index is not convenient. Via Gremlin Plugin, you can call g.clear(). HTH, Marko. http://markorodriguez.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Best wishes, Linan Wang Architect, Programmer, PhD ___ 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 ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Delete a graph in Neo4J REST server
Hi Jake, Thank you for the explanation and information! Regards, From: Jacob Hansson jacob.hans...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Friday, October 21, 2011 1:46 AM Subject: Re: [Neo4j] Delete a graph in Neo4J REST server On Fri, Oct 21, 2011 at 2:14 AM, andrew ton andrewt...@yahoo.com wrote: Hello, Is there a API or a way to delete a graph in the Neo4J REST server? For example, I can send a REST request to delete the root of the graph then all nodes under that root are also removed. Thanks, Hi Andrew, deleting the root node will only remove the root node, the rest of the graph will remain intact. The server on it's own can't delete the full database in one go, but you can use this server plugin to add that functionality: https://github.com/jexp/neo4j-clean-remote-db-addon /jake ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Jacob Hansson Phone: +46 (0) 763503395 Twitter: @jakewins ___ 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] Delete a graph in Neo4J REST server
Hello, Is there a API or a way to delete a graph in the Neo4J REST server? For example, I can send a REST request to delete the root of the graph then all nodes under that root are also removed. Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Set property on node in Neo4j REST server
Hi Jim, Thank you for your information! Andrew From: Jim Webber j...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Sunday, October 16, 2011 12:46 PM Subject: Re: [Neo4j] Set property on node in Neo4j REST server Hi Andrew, Michael Hunger wrote a plugin for the Neo4j REST server that implements this. You can get it from his github space: https://github.com/jexp/neo4j-clean-remote-db-addon Jim ___ 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] Set property on node in Neo4j REST server
Hi Peter,
I did use API described by that chapter, however I still have problems. My
nodes have some properties name and type. Now I want to add new properties to
my nodes.
1. Set property: the section 16.5.1 describes that the
url http://localhost:7474/db/data/node/5/properties/foo and the body to be put
is bar. I assume foo is the property name and bar the property value. But
how is the string bar sent in the PUT request while the service accepts a
JSON object (Content-type = application/json)?
I have tried to put a string or a json object like {value:testing}. I got
Bad request error as I anticipated.
2. Update properties: I have tried as 16.5.2 instructs and the result are:
a. If I PUT a JSON object that has all existing properties with new values then
all properties of the node are updated with new values.
b. If I PUT a JSON object that has only one property with a new value then all
properties of the node are gone except the property in the PUT with the new
value.
Would you please explain how I can update a property and how I add new
properties to a node but existing properties are still intact. Thank you very
much!
Cheers,
From: Peter Neubauer peter.neuba...@neotechnology.com
To: Neo4j user discussions user@lists.neo4j.org
Sent: Friday, October 14, 2011 11:40 PM
Subject: Re: [Neo4j] Set property on node in Neo4j REST server
Andrew,
You can either update just one property or set and override all of them, see
http://docs.neo4j.org/chunked/snapshot/rest-api-node-properties.html
Does that help?
/peter
On Friday, October 14, 2011, andrew ton andrewt...@yahoo.com wrote:
Hello,
According to the Neo4j REST API to set a property on a node I send a PUT
request to the node's property URL e.g.
http://localhost:7474/db/data/node/5/properties/{propertyname}.
This api accepts a JSON object. How do I send a json object that has
property name and value? The sample in the document shows the body of PUT is
just a string while the property name is in the URL.
Is it correct that the API should be
http://localhost:7474/db/data/node/5/properties and the body has an
JSONObject e.g. {propertyName:propertyValue} ?
If so then what is the difference between setting property and updating
property ?
Thanks,
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[Neo4j] Set property on node in Neo4j REST server
Hello,
According to the Neo4j REST API to set a property on a node I send a PUT
request to the node's property URL
e.g. http://localhost:7474/db/data/node/5/properties/{propertyname}.
This api accepts a JSON object. How do I send a json object that has property
name and value? The sample in the document shows the body of PUT is just a
string while the property name is in the URL.
Is it correct that the API should
be http://localhost:7474/db/data/node/5/properties and the body has an
JSONObject e.g. {propertyName:propertyValue} ?
If so then what is the difference between setting property and updating
property ?
Thanks,
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Re: [Neo4j] Node index in Neo4j REST server
Thank you , Jim. Cheers, From: Jim Webber j...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Wednesday, October 12, 2011 1:24 AM Subject: Re: [Neo4j] Node index in Neo4j REST server Hi Andrew, I have a question about indexing in Neo4j REST server. For some reason I may need to create multiple node indexes in REST server. Is there any limit number of indexing I am allowed to create? No, there's no logical limit on the number of indexes you can create. Jim ___ 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] Different instances in Neo4j REST db
Hi Jim, I can create different graphs in different folders using the embedded database. I'd like to know whether the same thing is possibly done with the REST server. Thanks, From: Jim Webber j...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Sunday, October 9, 2011 2:30 AM Subject: Re: [Neo4j] Different instances in Neo4j REST db Hi Andrew, The Neo4j server has a single instance of EmbeddedGraphDatabase inside. You can create different logical databases by having disjoint graphs only. HTH. Jim ___ 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] Different instances in Neo4j REST db
Hi Jim, Thank you for the clear information! Cheers, From: Jim Webber j...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Sunday, October 9, 2011 7:23 AM Subject: Re: [Neo4j] Different instances in Neo4j REST db Hi Andrew, It's not possible with a single REST server, though multiple REST servers will live happily on the same host providing you give each of them different configuration (e.g. port number, data store location etc). Jim ___ 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] Different instances in Neo4j REST db
Hello, Does Neo4J REST db allow us to create multiple different graphs, e.g. one graph is for a set of data A and another for a set of data B? My question is about the similar feature in the relational db where we can create multiple db instances. If Neo4J does how can I do it? Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] template tool
Hello,
I have a quick question regarding string template. When we create a node index
the server returns a template
http://localhost:7474/db/data/index/node/favorites/{key}/{value}
Does Neo4J have any API similar to StringTemplate that can replace placeholders
in the template with the real
values?
Thanks,
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Re: [Neo4j] template tool
Thank you Jim!
Cheers,
From: Jim Webber j...@neotechnology.com
To: Neo4j user discussions user@lists.neo4j.org
Sent: Friday, October 7, 2011 10:09 AM
Subject: Re: [Neo4j] template tool
Hi Andrew,
I have a quick question regarding string template. When we create a node
index the server returns a template
http://localhost:7474/db/data/index/node/favorites/{key}/{value}
Does Neo4J have any API similar to StringTemplate that can replace
placeholders in the template with the real
values?
Short answer: no.
The reason we used these URI templates is that we can't enumerate (in the
general case) the contents of an index, so we have to invite clients to compute
them (hence the URI template).
So the thinking goes, since it's you (as the client) that creates the index
entries, knowing the {key} and {value} expansions are easy for you to perform.
Jim
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[Neo4j] Add node to index
Hi, In the document (15.7.6) the example of adding a node to index by a POST method to http://localhost:7474/db/data/index/node/favorites/key/the%20value. The service accept JSON. However the example shows the request posts the body as a string http://localhost:7474/db/data/node/0; but not a json object. I tried to Post a string of a node to add it to the index and got an error (as I expected). Can somebody shed some light? If we post a json object then what is the key? Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Add node to index
Hi Jim, Thank you! I'm using 1.5.M01 version. Just out of curiosity, how did you add a node into the index in the 1.5.M01 version? I'm downloading the SNAPSHOT and will try again. Cheers, Andrew From: Jim Webber j...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Tuesday, October 4, 2011 12:55 AM Subject: Re: [Neo4j] Add node to index Hi Andrew, In the latest snapshots the API has changed, see: http://docs.neo4j.org/chunked/snapshot/rest-api-indexes.html So either ensure you're using 1.5M01 if you want the old behaviour, or a snapshot if you want the new behaviour. Jim ___ 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] Add node to index
Hi Peter, I'm using Neo4J 1.5.M01 and I use the neo4j manual in this package. So I guess the manual is for that version. Cheers, Andrew From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Tuesday, October 4, 2011 12:54 AM Subject: Re: [Neo4j] Add node to index Andrew, do you have the URL to the documentation you are looking at? Is it the same version as the database version you are using? 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 Tue, Oct 4, 2011 at 9:07 AM, andrew ton andrewt...@yahoo.com wrote: Hi, In the document (15.7.6) the example of adding a node to index by a POST method to http://localhost:7474/db/data/index/node/favorites/key/the%20value. The service accept JSON. However the example shows the request posts the body as a string http://localhost:7474/db/data/node/0; but not a json object. I tried to Post a string of a node to add it to the index and got an error (as I expected). Can somebody shed some light? If we post a json object then what is the key? Thanks, ___ 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
Re: [Neo4j] Add node to index
Hi Peter, I downloaded the SNAPSHOT version and looked into the manual. It is different from the one in the 1.5.M01 version and it looks very nice as well as useful. I modified my code to Post the Json object to the index and the node was successfully added. Thanks! Regards, From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Tuesday, October 4, 2011 7:53 AM Subject: Re: [Neo4j] Add node to index Andrew, just downloaded and looked at it. The manual is generated from integration tests, so this code has been running against a server. In the SNAPSHOT version, you have full JSON syntax, see http://docs.neo4j.org/chunked/snapshot/rest-api-indexes.html#rest-api-add-node-to-index I am not sure, but isn't sdfsdfsdf Valid JSON? 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 Tue, Oct 4, 2011 at 4:23 PM, andrew ton andrewt...@yahoo.com wrote: Hi Peter, I'm using Neo4J 1.5.M01 and I use the neo4j manual in this package. So I guess the manual is for that version. Cheers, Andrew From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Tuesday, October 4, 2011 12:54 AM Subject: Re: [Neo4j] Add node to index Andrew, do you have the URL to the documentation you are looking at? Is it the same version as the database version you are using? 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 Tue, Oct 4, 2011 at 9:07 AM, andrew ton andrewt...@yahoo.com wrote: Hi, In the document (15.7.6) the example of adding a node to index by a POST method to http://localhost:7474/db/data/index/node/favorites/key/the%20value. The service accept JSON. However the example shows the request posts the body as a string http://localhost:7474/db/data/node/0; but not a json object. I tried to Post a string of a node to add it to the index and got an error (as I expected). Can somebody shed some light? If we post a json object then what is the key? Thanks, ___ 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 ___ 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] Sample of SPARQL on Neo4J embedded database
Hi Peter, Thank you for your quick reply! Since I'm very new to Neo4J I may have some naive questions. You meant to execute SPARQL on both Neo4J embedded and REST server I have to use 3rd party API? I thought that Neo4J provided some native API so that I can execute SPARQL on the embedded database. I appreciate it if you clarify my puzzle. Thank you! Regarding the Neo4J REST server I'm looking forward to seeing your plugin. Cheers, Andrew From: Peter Neubauer peter.neuba...@neotechnology.com To: Neo4j user discussions user@lists.neo4j.org Sent: Thursday, September 29, 2011 10:40 PM Subject: Re: [Neo4j] Sample of SPARQL on Neo4J embedded database Andrew, look at https://github.com/tinkerpop/blueprints/wiki/Sail-Ouplementation for an example with the Tinkerpop Sail implementation over Neo4j. Just switch the first statement Sail sail = new GraphSail(new TinkerGraph()); against Sail sail = new GraphSail(new Neo4jGraph(mystore)); I am workign on a SPARQL plugin for hte server which will document this and also expose a SPARQL query endpoint in the server for both statement insert and queries. 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 Fri, Sep 30, 2011 at 6:41 AM, andrew ton andrewt...@yahoo.com wrote: Hello, Is there any samples of executing SPARQL on Neo4j embedded db? I found a thread in the Neo4j Forums posted by Mattias Person-2 https://svn.neo4j.org/components/rdf-sparql/trunk/src/test/java/org/neo4j/rdf/sparql/Om2SampleQueriesTest.java However this link is not working any longer. Thanks, ___ 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
[Neo4j] (no subject)
Hello, Is there any samples of executing SPARQL on Neo4j embedded db? I found a thread in the Neo4j Forums posted by Mattias Person-2 https://svn.neo4j.org/components/rdf-sparql/trunk/src/test/java/org/neo4j/rdf/sparql/Om2SampleQueriesTest.java However this link is not working any longer. Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Sample of SPARQL on Neo4J embedded database
Hello, Is there any samples of executing SPARQL on Neo4j embedded db? I found a thread in the Neo4j Forums posted by Mattias Person-2 https://svn.neo4j.org/components/rdf-sparql/trunk/src/test/java/org/neo4j/rdf/sparql/Om2SampleQueriesTest.java However this link is not working any longer. Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] See the graph in the Neo4J embedded db
Hello, I have stored triples into the Neo4J embedded db, now I want to see the graph or data in the db. How can I do it? Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Neo4J Rest server support SPARQL??
Hi, After adding nodes and relationships into Neo4J REST server using REST API. How do I read data from the database using SPARQL? Does the database support SPARQL? Regards, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Execute SPARQL on Neo4J REST database?
Hi, After adding nodes and relationships into Neo4J REST server using REST API. How do I read data from the database using SPARQL? Does the database support SPARQL? Regards, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Neo4J support Android platform??
Hello, I'm playing around with Neo4J (both embedded and REST server). I have a question that can we use Neo4J on mobile platforms, e.g. Android? Regards, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] See the graph in the Neo4J embedded db
Hi noppanit, Thank you for your quick reply! I have checked http://wiki.neo4j.org/content/Neoclipse#Configuration about Neoclipse. Where can I find Neoclipse? The donwload page just show neo4j packages. I am using neo4j-community-1.5.M01 as REST server. In eclipse I use neo4j API to store data into embedded database. I really appreciate your help if you can give me clear information. Thank you! Regards, From: noppanit noppani...@gmail.com To: user@lists.neo4j.org Sent: Wednesday, September 28, 2011 1:33 PM Subject: Re: [Neo4j] See the graph in the Neo4J embedded db You could use neoclipse to see it. Sent from my BlackBerry® wireless device -Original Message- From: tt6 [via Neo4j Community Discussions] ml-node+s438527n3377257...@n3.nabble.com Date: Wed, 28 Sep 2011 13:23:29 To: noppanitnoppani...@gmail.com Subject: [Neo4j] See the graph in the Neo4J embedded db Hello, I have stored triples into the Neo4J embedded db, now I want to see the graph or data in the db. How can I do it? Thanks, ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ If you reply to this email, your message will be added to the discussion below: http://neo4j-community-discussions.438527.n3.nabble.com/Neo4j-See-the-graph-in-the-Neo4J-embedded-db-tp3377257p3377257.html To start a new topic under Neo4j Community Discussions, email ml-node+s438527n438527...@n3.nabble.com To unsubscribe from Neo4j Community Discussions, visit http://neo4j-community-discussions.438527.n3.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=438527code=bm9wcGFuaXQuY0BnbWFpbC5jb218NDM4NTI3fDExOTIzNzAyNjk= -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/Neo4j-See-the-graph-in-the-Neo4J-embedded-db-tp3377257p3377301.html Sent from the Neo4j Community Discussions mailing list archive at Nabble.com. ___ 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
