[Neo4j] Query for combination of properties

Hi, I'm new to neo4j and have read quite a lot of documentation and source code and it seems that one can only do queries on a single Node property (a single indexed value mapped to a key) using : IndexHitsNode getNodes( String key, Object value ) This seems to be true for

Re: [Neo4j] Query for combination of properties

Hi Peter, it looks great! I will try it and let you know of the results. Thanks, --- balazs On 7/7/10 3:40 PM, Peter Neubauer wrote: Balazs, this is not explicitly possible today, but in the new Lucene-Index component in laboratory that will be integrated into trunk after Neo4j 1.1, see

Re: [Neo4j] Query for combination of properties

Great, thanks! Do you have any info on when 1.1 is expected? In the meantime we will use this laboratory version of the LuceneIndexProvider, because the multi-field search is essential in our case. By the way: I see that now one can also index relationships with the new API. Do you also plan

[Neo4j] LuceneIndexProvider EXACT_CONFIG vs FULLTEXT_CONFIG

Hi, could someone please explain me when to use EXACT_CONFIG and when FULLTEXT_CONFIG when using the nodeIndex() of the LuceneIndexProvider? It seems to me that one cannot execute wildcard searches in FULLTEXT_CONFIG mode, it only works when EXACT_CONFIG is used. But what is actually exact

[Neo4j] Lucene result sorting

Hi, Is it possible to do get sorted results form LuceneIndex#query()? It would be really helpful if results would be sorted at lucene time according to one or more indexed fields rather than loading the actual neo4j nodes and than iterating over them for sorting. Currently, it seems that

Re: [Neo4j] Lucene result sorting

Hi Andrés, Thanks for the answer, looks cool :-) I give it a try immediately! Regards, --- balazs On 10/19/10 8:37 PM, Mattias Persson wrote: 2010/10/19 Andres Taylorandres.tay...@neotechnology.com Hi Balazs, We've been working on a new lucene-index module just these last days. The new

Re: [Neo4j] Lucene result sorting

() for the result list) Do you think such solution is feasible? Regards, --- balazs On 10/20/10 8:24 AM, Balazs E. Pataki wrote: Hi Andrés, Thanks for the answer, looks cool :-) I give it a try immediately! Regards, --- balazs On 10/19/10 8:37 PM, Mattias Persson wrote: 2010/10/19

Re: [Neo4j] Lucene result sorting

, however the options are quite limited there... you can just specify which keys to sort on and the order is always the natural lexical order, I think. Good input. Regards, --- balazs On 10/20/10 8:24 AM, Balazs E. Pataki wrote: Hi Andrés, Thanks for the answer, looks cool :-) I give

[Neo4j] How to add an indexer other than Lucene?

Hi, we are trying to use the Sphinx indexer with neo4j. With the old API we could implement an IndexProvider and do indexing on Nodes created by any GraphDatabaseService (eg. EmbeddedGraphDatabase). Now with the new 1.2M02 milestone release there is the Index Framework, which is integrated

Re: [Neo4j] How to add an indexer other than Lucene?

Hi, Thanks for the info! I read carefully the Index_Framework documentation but one thing is missing from there (my point 1.) This is what I figured out: 1. The neo4j kernel (more specifically the actual GraphDatabaseService or its helper like EmbeddedGraphDbImpl) automatically loads anything

Re: [Neo4j] How to add an indexer other than Lucene?

Thank you very much, Mattias! This is pretty much what I also have discovered myself and wrote in the previous email. I'm not sure of the XaDataSource/XaConnection/XaResource parts, but I will take a look. Regards, --- balazs On 11/3/10 5:37 PM, Mattias Persson wrote: There should never be a

[Neo4j] Removing from index a non-existent entry

Hi, I don't know if it is a bug or not, but the following code: GraphDatabaseService graphDb = new EmbeddedGraphDatabase(x-lucene-indexer-bug); Transaction tx = graphDb.beginTx(); try { Node n1 = graphDb.createNode(); Node n2 = graphDb.createNode(); Relationship r =

Re: [Neo4j] Removing from index a non-existent entry

Great, thanks! --- balazs On 11/4/10 4:57 PM, Mattias Persson wrote: You definately found a bug. I'll try to fix it today so that it is fixed in the next milestone. Thanks for the report and I'll get back to you here when it is done! 2010/11/4, Balazs E. Patakipat...@dsd.sztaki.hu: Hi, I

Re: [Neo4j] Removing from index a non-existent entry

Thank you very much for the quick response and quick fix! --- balazs On 11/4/10 8:11 PM, Mattias Persson wrote: I just fixed it, unfortunately it won't make it into the M03... but it's available in latest SNAPSHOT at least! 2010/11/4 Balazs E. Patakipat...@dsd.sztaki.hu Great, thanks! ---

Re: [Neo4j] Neoclipse Neo 1.2

Yes, the same with me. It complains that the database is opened by another process, but it is obviously not. I also encountered another compatibility issue between neo 1.1-1.2: neo 1.2 tries to read a wrong value from index.db, so I had to delete index.db, let my program rebuild it, then it

Re: [Neo4j] Neoclipse Neo 1.2

I also encountered another compatibility issue between neo 1.1-1.2: neo 1.2 tries to read a wrong value from index.db, so I had to delete index.db, let my program rebuild it, then it runs OK. I used the laboratory version of the Lucene indexer with neo 1.1. Oh, good to know. The storage

[Neo4j] Neo4J server with my embedded server

Hi, I see there's the Neo4j Server in M4, and it looks really cool, especially with its administration console. My question is: is it possible to have an embedded server (a server that I configure from java, with my own settings, indexers, etc) and have this same Neo4j Web Administration

Re: [Neo4j] Neo4J server with my embedded server

Yes, I would like to have what Mattias just described: the webadmin with my embedded environment. I usually have an EmbeddedGraphDatabase, which I access via our own REST interface run in Tomcat. So I have a Tomcat, and in case the webadmin is a a plain servlet it would be nice to configure it

Re: [Neo4j] Neo4J server with my embedded server

I only want to access it via REST, but I don't want to publish (make accessible) the Neo4J REST API, only my own REST calls (which implements my business logic with neo4j storing my domain objects). I will take a deeper look into the Neo4J Server and see if I can somehow integrate my

[Neo4j] svn certificate problem

When I try to access https://svn.neo4j.org from NetBeans I get the following error: - The certificate is not issued by a trusted authority. Use the fingerprint to validate the certificate manually! - The certificate has expired Hostname: svn.neo4j.org Certificate information: - Subject:

Re: [Neo4j] Neo4j 1.2 is released

This is great news, thank you for your work! A read this in the announcement: Finally, the kernel now has service extensions that load automatically, or can be injected in a running instance. Examples include the Neo4j shell server and the management component. Could you please help how the

Re: [Neo4j] Neo4j 1.2 is released

Hi Tobias, I always forget about Neo4j being this smart. :-) Thank you for your answer! --- balazs On 1/4/11 5:11 PM, Tobias Ivarsson wrote: Hi Balazs, I'll be happy to explain that. All you need to do in order to enable the management component is to have the management jar

[Neo4j] Lucene indexing bug, NullPointerException

Hi, under certain circumstances (which I could not yet reproduce in a simple example) I get this exception from Lucene while searching for a simple key=value: IndexHitsNode hits = index.get(OID_PROP, oid); if (hits.size() == 0) { ... } Caused by:

Re: [Neo4j] Lucene indexing bug, NullPointerException

Oh, and it happens with neo4j 1.2. --- balazs On 1/13/11 4:38 PM, Balazs E. Pataki wrote: Hi, under certain circumstances (which I could not yet reproduce in a simple example) I get this exception from Lucene while searching for a simple key=value: IndexHitsNode hits

Re: [Neo4j] Lucene indexing bug, NullPointerException

operation. 致敬 向雅 2011/1/14 Balazs E. Patakipat...@dsd.sztaki.hu: Oh, and it happens with neo4j 1.2. --- balazs On 1/13/11 4:38 PM, Balazs E. Pataki wrote: Hi, under certain circumstances (which I could not yet reproduce in a simple example) I get this exception from Lucene while searching

Re: [Neo4j] Lucene indexing bug, NullPointerException

I tried and it now works all right. Thanks again! --- balazs On 1/14/11 11:00 AM, Balazs E. Pataki wrote: Great! Thank you very much, I will check this and report how it works. Thanks for the quick response! --- balazs On 1/14/11 9:40 AM, Mattias Persson wrote: I fixed it, although

Re: [Neo4j] How to copy a complete database?

: r.getPropertyKeys()) { newRelationship.setProperty(key, r.getProperty(key)); } I hope this is useful for you. Greetings Axel [1] http://lists.neo4j.org/pipermail/user/2010-November/005478.html On 03.03.2011 11:35, Balazs E. Pataki wrote: Hi, I have a big database

Re: [Neo4j] How to copy a complete database?

Hi Tobias, Do you happen to have some little class which can at tell us which property values neo4j would consider short and which of your 6 encoding would it use? Maybe the string statistics collecting program you created earlier has this logic - but I'm just guessing. Thanks, --- balazs On

Re: [Neo4j] How to copy a complete database?

Actually both options would be very useful, but the first option (string as input and tell me if it is short or not) would be enough for me for now if available. Thanks, --- balazs On 3/3/11 6:37 PM, Tobias Ivarsson wrote: Yes, the statistics tool almost does that, but with a wider range of

Re: [Neo4j] How to copy a complete database?

Hi Tobias, I tried to use ShortStringEncoding.java, however it seems to refer to a class called ShortString, which is not available in github: https://github.com/thobe/neo4j-admin-store/tree/master/src/main/java/org/neo4j/kernel/impl/nioneo/store Could you also please provide it? Thanks, ---

[Neo4j] Lucene 3.1 with neo4j. Is it OK?

Hi, the subject says is all. :-) But anyway, is it possible/safe to use the brand new 3.1 (31 March 2011) release of Lucene with neo4j? Thanks, --- balazs ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user

Re: [Neo4j] Lucene 3.1 with neo4j. Is it OK?

Ok, thanks. I will try and report if I find out something (good or bad). --- balazs On 4/7/11 11:44 AM, Tobias Ivarsson wrote: I see no reason for it not to work, Lucene has a good story of compatibility between releases with the same major version. But please note that this isn't something

Re: [Neo4j] Neo4j 1.3 GA Released!

Great job, thank you! Will you also update this page http://neotechnology.com/price-list to make it clear what is included in which release and with what license (Neo4j Community is still marked as AGPLv3 here)? Regards, --- balazs On 4/13/11 6:18 PM, Jim Webber wrote: Hello fellow

[Neo4j] Relationship iterator doesn't implement remove()

Hi, Anothor bug like feature I just found. :-) Node#getRelationships() return an Iterablle, from which I can get an Iterator. This Iterator (actually IntArrayIterator) however doesn't implement the full Iterator interface as it throws an UnsupportedOperationException() when remove() is called

Re: [Neo4j] Announcing Neo4j 1.4 M03 “Kiruna Stol”

Hello Ian, and welcome! :-) Reading the announcment about M03 ... http://blog.neo4j.org/2011/05/announcing-neo4j-14-m03-kiruna-stol.html ... I got excited about the novel way of caching relationships based on their direction. Can you explain what it actually means and in what situations can

Re: [Neo4j] Slow Traversals on Nodes with too many Relationships

Hi, when we started to evaluate neo4j we made some measurements and for us it seemed that 50.000 is a magical number: this many relationships and properties on one node seemed to be a limit, which once reached makes things slow. But we didn't actually need that much relationship/property in

[Neo4j] afterRollback never called

Hi, I'm using 1.4M03 and I have class implementing TransactionEventHandler. However it never receives an afterRollback() although I call failure() and finish() on the transaction. Otherwise the transaction seems to be rolled back, only my TransactionEventHandler is not informed about it.

Re: [Neo4j] afterRollback never called

Hi, So, an explicit failure() in a transaction doesn't count as a transaction failed for some reason then? I have a counter for the number of nodes created and written to DB in each transaction in the current thread. When the transaction fails, I would like to know about it and not count

Re: [Neo4j] afterRollback never called

Yes, you are right. Still, it may be interesting in some cases to be informed when rollbacks happen. Mattias, thanks for your help and comments! --- balazs On 6/27/11 4:03 PM, Mattias Persson wrote: Couldn't you count those in afterCommit instead? That way you would be sure to update your

[Neo4j] numericRange vs. exact/fulltext index

Hi, I'm playing around with indexing and numeric range queries according to this documentation: http://docs.neo4j.org/chunked/snapshot/indexing-lucene-extras.html According to my tests numeric range queries (QueryContext.numericRange()) only have effect when exact type index is used. I

Re: [Neo4j] numericRange vs. exact/fulltext index

Hi Mattias, Thanks for the tip! I started to look around and I think I found something. When fulltext type index is created its type will be CustomType (subclass of IndexType - IndexType is used for exact indexes) in neo4j. CustomType overrides the addToDocument() of IndexType method, which

Re: [Neo4j] numericRange vs. exact/fulltext index

Great, thank you! Another thing I just found in IndexType: for a fulltext index each field is stored as fulltext (tokenized into terms) and there's also an exact field (the same index postfixed with _e). I think this feature is not documented officially, so my question is, whether we can count

Re: [Neo4j] numericRange vs. exact/fulltext index

fields in fulletxt indexes? Regards, --- balazs On 6/29/11 7:44 AM, Mattias Persson wrote: Wow, thank you for finding that. Well done! I'll fix it and if it doesn't break anything else then I'll commit it. Best, Mattias Den tisdagen den 28:e juni 2011 skrev Balazs E. Pataki pat

Re: [Neo4j] how setup lucene fulltext search filter

Passing a Filter would be great, because in many cases I can decide based on Lucene Documents (indexed fields), which objects I need as Nodes (and selecting/filtering/sorting Documents is much faster than first turning each Document to a Node and then sorting/filtering the nodes) But as Edgar

Re: [Neo4j] how setup lucene fulltext search filter

Great support as always. :-) Thank you! --- balazs On 7/13/11 3:05 PM, Mattias Persson wrote: 2011/7/13 Balazs E. Patakipat...@dsd.sztaki.hu Passing a Filter would be great, because in many cases I can decide based on Lucene Documents (indexed fields), which objects I need as Nodes (and

Re: [Neo4j] Why doInternalRecovery is necessary?

Thank you Mattias for this logical explanation. From now on doInternalRecovery is my friend. :-) Regards, --- balazs On 10/26/11 5:06 PM, Mattias Persson wrote: Good question, so neo4j implements all the ACID principles of transactions, but that doesn't mean that there's a guarantee that

Re: [Neo4j] Node Id generation deadlock

Hi, I had a similar issue (also with ID generation), and I would be also interested in a solution, or how synchronizations should be done to avoid deadlocks like this in the transaction. Regards, --- balazs On 11/2/11 8:55 AM, Cres wrote: (Sorry for re-opening this thread, I hadn't yet

Re: [Neo4j] Node Id generation deadlock

up in other use cases as well, so it is nice to know there's a Neo4j synchronization way to do this properly without causing a deadlock. --- balazs On 11/3/11 9:57 AM, Tuure Laurinolli wrote: On Nov 2, 2011, at 13:33 , Balazs E. Pataki wrote: Hi, I had a similar issue (also with ID