Oh.. yes..it is very well documented. I just needed to read through. :) I have got couple of questions related to plugins: 1) Instead of plugins being accessible through POST method to the URI, can they be declared accessible as a GET request?
2) The following function did not show up at http://localhost:7474/db/data/ though it compiles: @Name( "getAllRelationshipTypes" ) @Description( "Get all relationship types of the graph" ) @PluginTarget( GraphDatabaseService.class ) public Iterable<RelationshipType> getAllRelationshipTypes( @Source GraphDatabaseService graphDb) { Return graphDb.getRelationshipTypes(); } My guess is that the current API does not support Iterable<RelationshipType> as a json document. Instead the following works: @Name( "getAllRelationshipTypes" ) @Description( "Get all relationship types of the graph" ) @PluginTarget( GraphDatabaseService.class ) public Iterable<String> getAllRelationshipTypes( @Source GraphDatabaseService graphDb) { Vector<String> v = new Vector<String>(); for(RelationshipType rType : graphDb.getRelationshipTypes()){ v.add(rType.name()); } return v; } which returns Iterable<String> with additional manipulations. Is that the case or am I missing something? -Hemant -----Original Message----- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Jim Webber Sent: Tuesday, February 01, 2011 9:41 PM To: Neo4j user discussions Subject: Re: [Neo4j] neo4j plugins Hi, Looking at the docs, it already says that the conventional place for extensions is $NEO4J_HOME/plugins. I've updated the docs to emphasise that more clearly. Jim On 1 Feb 2011, at 19:22, Joshi Hemant - hjoshi wrote: > Thanks Michael. I don't think I can update documentation at > http://docs.neo4j.org/chunked/snapshot/server-plugins.html > Is http://wiki.neo4j.org/content/Using_the_Neo4j_Server_with_Java a good > place to add section about plugins that are REST URI accessible? > > -Hemant > > > -----Original Message----- > From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On > Behalf Of Michael Hunger > Sent: Tuesday, February 01, 2011 5:04 PM > To: Neo4j user discussions > Subject: Re: [Neo4j] Neo4j 1.2 server on Linux X86 - 64 bit > > Hemant, > > Good work, perhaps you'd like to publish it somewhere in the wiki or in a > blog post. > Now you also know how to speed up your app, whenever the existing REST API is > too chatty for a usecase. Just write a plugin that gets the data (nodes, > relationships) that you want to get in one request (e.g. via a traversal) > and return them. > > Cheers > > Michael > > > Am 01.02.2011 um 23:55 schrieb Joshi Hemant - hjoshi: > >> I solved it!! The jar file needed to be in the plugins folder. >> -Hemant >> >> -----Original Message----- >> From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On >> Behalf Of Joshi Hemant - hjoshi >> Sent: Tuesday, February 01, 2011 4:50 PM >> To: Neo4j user discussions >> Subject: Re: [Neo4j] Neo4j 1.2 server on Linux X86 - 64 bit >> >> I could create OldIndex plugin to read index created using 0.8 snapshot of >> REST server and made entry for the plugin in the >> org.neo4j.server.plugins.ServerPlugin as follows: >> org.neo4j.examples.server.plugins.OldIndex >> The code for OldIndex is very straight forward : >> >> @Name( "getNodes" ) >> @Description( "Get all nodes from the lucene index" ) >> @PluginTarget( GraphDatabaseService.class ) >> public Iterable<Node> getAllNodes( @Source GraphDatabaseService graphDb, >> @Description( "The key to search old lucene index with" ) >> @Parameter( name = "key" ) String key, >> @Description( "The value to search old lucene index with" ) >> @Parameter( name = "value" ) String value) >> { >> IndexService ind = new LuceneReadOnlyIndexService(graphDb); >> IndexHits<Node> nodeHits = ind.getNodes(key, value); >> return nodeHits; >> } >> >> When I post to URL >> http://localhost:7474/db/data/ext/OldIndex/graphdb/getNodes with key as name >> and value as "JOHN DOE", I should get a single node back as it was indexed >> and accessible earlier through old 0.8 REST snapshot. >> >> According to wrapper.log file, the request was handled and returned with 200 >> HTTP code. >> >> INFO | jvm 1 | 2011/02/01 16:38:46 | [org.mortbay.log] : REQUEST >> /db/data/ext/OldIndex/graphdb/getNodes on >> org.mortbay.jetty.HttpConnection@124e935 >> INFO | jvm 1 | 2011/02/01 16:38:46 | [org.mortbay.log] : >> sessionManager=org.mortbay.jetty.servlet.HashSessionManager@14b5f4a >> INFO | jvm 1 | 2011/02/01 16:38:46 | [org.mortbay.log] : session=null >> INFO | jvm 1 | 2011/02/01 16:38:46 | [org.mortbay.log] : >> servlet=org.neo4j.server.web.NeoServletContainer-19297865 >> INFO | jvm 1 | 2011/02/01 16:38:46 | [org.mortbay.log] : chain=null >> INFO | jvm 1 | 2011/02/01 16:38:46 | [org.mortbay.log] : servlet >> holder=org.neo4j.server.web.NeoServletContainer-19297865 >> INFO | jvm 1 | 2011/02/01 16:38:46 | [org.mortbay.log] : RESPONSE >> /db/data/ext/OldIndex/graphdb/getNodes 200 >> INFO | jvm 1 | 2011/02/01 16:38:46 | [org.mortbay.log] : EOF >> >> But there were no results returned. >> The question is: how does one access old lucene index created with 0.8 >> snapshot in the new 1.2 server plugin framework? >> -Hemant >> >> -----Original Message----- >> From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On >> Behalf Of Peter Neubauer >> Sent: Thursday, January 27, 2011 4:43 PM >> To: Neo4j user discussions >> Subject: Re: [Neo4j] Neo4j 1.2 server on Linux X86 - 64 bit >> >> Joshi, >> you can see the process here, >> http://docs.neo4j.org/chunked/snapshot/server-plugins.html, and and an >> example under neo4j-examples (part of the server distribution) under >> /examples/java/site/server-plugins.html that links to the local >> example code. >> >> Let me know if you encounter problems, and I will try to help you! >> >> 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 Thu, Jan 27, 2011 at 10:06 AM, Joshi Hemant - hjoshi >> <hemant.jo...@acxiom.com> wrote: >>> I can write a java program if it is straight forward process. Otherwise, I >>> will have to wait. >>> -Hemant >>> >>> -----Original Message----- >>> From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On >>> Behalf Of Peter Neubauer >>> Sent: Thursday, January 27, 2011 10:35 AM >>> To: Neo4j user discussions >>> Subject: Re: [Neo4j] Neo4j 1.2 server on Linux X86 - 64 bit >>> >>> Joshi, >>> would it be possible for you to write that extension? Otherwise, I can >>> try to power it through one of these days :/ >>> >>> 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 Thu, Jan 27, 2011 at 8:08 AM, Joshi Hemant - hjoshi >>> <hemant.jo...@acxiom.com> wrote: >>>> I do not think I have an options of updating index to new provider >>>> framework using REST or java. I think an extension would make updating to >>>> latest release much easier for us. >>>> -Hemant >>>> >>>> -----Original Message----- >>>> From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] >>>> On Behalf Of Peter Neubauer >>>> Sent: Wednesday, January 26, 2011 11:59 PM >>>> To: Neo4j user discussions >>>> Subject: Re: [Neo4j] Neo4j 1.2 server on Linux X86 - 64 bit >>>> >>>> Joshi, >>>> the current REST API exposes the new Indexes that you can create on >>>> nodes and relatoinships. The old indexes (that your DB probably is >>>> indexed with) are not exposed via the Server REST API. >>>> >>>> I would suggest to reindex your data using either the current REST >>>> API, >>>> http://components.neo4j.org/neo4j-server/snapshot/rest.html#Add_indices_with_provided_configuration_parameters >>>> >>>> or in Java code http://wiki.neo4j.org/content/Index_Framework or >>>> >>>> Is that possible for you? Otherwise we would need to find another >>>> solution, or write an extension that provides access to the old index >>>> API, since this has come up repeatedly now. >>>> >>>> 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 Wed, Jan 26, 2011 at 8:53 PM, Joshi Hemant - hjoshi >>>> <hemant.jo...@acxiom.com> wrote: >>>>> Thanks Peter. You were right. Changing those 2 entries did solve the >>>>> problem of connecting to the webadmin UI as well as getting json document >>>>> back for simple requests such as >>>>> >>>>> curl -H Accept:application/json >>>>> http://gigdev8028.gig.acxiom.net:9999/db/data/node/1 >>>>> >>>>> Here are the 2 issues that are still puzzling to me. >>>>> 1) Though I have put the 2 aforementioned settings in neo4j.properties >>>>> file under conf folder (attached), I was still able to create a new node >>>>> without problems and could get json document back for the new node as >>>>> well. >>>>> >>>>> 2) When I pointed neo4j 1.2 server to my old neo4j-rest-db directory, I >>>>> could access all nodes, relationships as well properties etc. online >>>>> through webadmin as well as json requests but I am not able to access the >>>>> lucene index I have created on this data. I have several nodes I have >>>>> indexed in the old version that I would like to access using 1.2 but when >>>>> I try to get to http://gigdev8028.gig.acxiom.net:9999/db/data/index/node >>>>> >>>>> So far I get no response (no error either) I have attached neo4j.log and >>>>> wrapper.log if that helps. >>>>> Thanks for your help. >>>>> -Hemant >>>>> >>>>> -----Original Message----- >>>>> From: user-boun...@lists.neo4j.org [mailto:use r-boun...@lists.neo4j.org] >>>>> On Behalf Of Peter Neubauer >>>>> Sent: Tuesday, January 25, 2011 9:27 PM >>>>> To: Neo4j user discussions >>>>> Subject: 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> >>>>>>> <HEAD><TITLE>Redirection</TITLE></HEAD> >>>>>>> <BODY><H1>Redirect</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 >>>>> _______________________________________________ >>>>> 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 >> _______________________________________________ >> 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
