ID = 0 if the database doesn't exist.
> >>>> Is it possible to create an empty database so that node ID = 0 would
> the first node created using g.createNode()
> >>>> Kind regards,
> >>>>
> >>>> Pierre
> >>>>
> >>>>
ny system administrator.
> There are 10 types of people in the world: Those who understand binary, and
> those who don't.
> To understand recursion, we must first understand recursion.
>
>
>
>
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timal
> way.
>
> Thanks,
> Sumanth
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pp:121
>
>
Thanks for reporting this, it is now fixed in trunk.
>
>
> Now as far as I can tell this follows the example exactly as written in
> the api docs for neo4j.py, so for compelte info I'm running python 2.6
> and used jPype as interface option. This was on a complet
nectivity between nodes, based on edge properties.
>
There are some graph algorithms like these implemented, but I haven't
exposed them through the Python bindings (yet). Contributions are welcome :)
>
> 4) Is there a delete function that deletes nodes and relationship as
> oppose
What am I doing wrong?
>
> TIA,
> Ryan
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his simply solved by the transaction begin,
> success, finish statements. i.e delete commands are set for all, but not
> executed until tx.finish/success??
>
> /Erik Ask
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load_dependencies
>os.mkdir(destination)
> File "/usr/local/jython/Lib/os.py", line 309, in mkdir
>raise OSError(err, msg, path)
> OSError: [Errno 0] couldn't make directory: 'dependencies'
>
> Does this look familiar to anyone??
> __
es in this
directory and add them to sys.path in Jython, so you don't have to manage
the CLASSPATH on your own.
-Tobias
On Tue, Mar 16, 2010 at 4:50 PM, Erik Ask wrote:
> Tobias Ivarsson wrote:
> > It looks very strange. Which version of Jython are you using?
> >
> > On Tu
way more than are in the graph.
>
> Even if I write an isStopNode function to mimick STOP_AT_DEPTH_ONE,
> the script keeps going and I end up with millions of nodes in the
> edgelist, when there are only 1000.
>
> TIA,
> Ryan
> ___
>
ling tx.finish() on each transaction.
>
>
>
> Thanks for any insights on whether this behavior is to be expected and/or
> possible causes if it isn't normal...
>
>
>
> Thanks!
>
>
>
> Rick
>
>
>
> _______
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> dynamic type?
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__
4j.org
> > > https://lists.neo4j.org/mailman/listinfo/user
> > >
> >
> >
> >
> > --
> > Mattias Persson, [matt...@neotechnology.com]
> > Neo Technology, www.neotechnology.com
> > ___
> > Neo mailing list
>
already
> been committed)? Or will they be "flushed" on startup?
>
> -Original Message-
> From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
> On
> Behalf Of Tobias Ivarsson
> Sent: Thursday, March 18, 2010 5:34 AM
> To: Ne
gt; directory in my home directory, i.e. no sudo involved, and everything
> seemed to install just fine. But still no backend when actually
> running.
>
> Is there a list of the files needed to be in that directory
>
>
>
> On Tue, Mar 16, 2010 at 9:43 PM, Tobias Ivarsson
>
lImpl.map(FileChannelImpl.java:728)
> at
>
> org.neo4j.kernel.impl.nioneo.store.MappedPersistenceWindow.(MappedPersistenceWindow.java:53)
> ... 78 more
>
>
> Regards
> Marc
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(passing along a node
> URI)? Is it good/bad to do something like that?
>
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ed you to try this
> out.
> This problem is often references as multilevel graph layout algorithm.
>
> Cheers
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; roadmap [1]. Loading very large graphs in Gephi, even if it is scalable will
>> always make the memory suffer at one moment. Having the complete Graph in
>> Neo4j, plus the ability to quickly get a sub-graph with a query and save
>> updates would be a great achievement :-)
>&g
ut does anyone have a high level view
> on the technical feasibility?
>
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I've written up a proposal on our wiki:
http://wiki.neo4j.org/content/Google_Summer_of_Code_for_Neo4j_Visualization
It would be great if you could have a look and transfer it to your list of
project proposals.
On Thu, Mar 25, 2010 at 10:20 AM, Tobias Ivarsson <
tobias.ivars...@neotechno
node ?
>
> thank you :)
>
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I added the project to our wiki:
> http://wiki.gephi.org/index.php/Google_Summer_Of_Code_2010#Adding_support_for_Neo4j_in_Gephi
>
> I'll write a blog post and start communicate :) Great to start a project
> with you guys!
>
>
> On Fri, Mar 26, 2010 at 10:11 AM, Tobias Ivarsson <
Ok, thanks. We'll look into it.
On Fri, Mar 26, 2010 at 11:49 AM, Laurent Laborde wrote:
> something between 100 millions and 1 billions, i guess.
> the DB contain the result of my "collatz" code from 1 to 100 millions.
>
> --
> Ker2x
>
> On Fri, Mar 2
ssages. Just
> because
> > all the messages are possibly visible to me, doesn't mean I want to see
> > them
> > all. So, I'd like to additionally filter by the FOLLOWS relationship.
> I'd
> > like to express "get all messages that are visible and were created by a
> >
is into the trunk of kernel as soon as possible.
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lication master-slave or multi-master ?
>
> help me
>
>
> Thanks
> Bujji
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th 'name' = 'Mattias'
>
>
> So, what do you guys think?
>
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s that would add hooks for
things like this. The Django integration is an example of such a mapping
layer.
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operties that
> can be reasoned on. many times you want edges returned, not just vertices.
>
> Take care,
> Marko.
>
> http://markorodriguez.com
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We would love to get feedback on these ideas, so what do you guys think?
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above. Our ultimate goal is to
create an event framework that is as useful as possible while maintaining
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https
ction() )
>
> --
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s, such as node created, property changed,
> > relationship removed, etc.
> >
> > It might be possible that other components, such as the indexing
> component,
> > would want to add more events to the event framework.
> >
> > These are of course just some in
.org/spring/docs/3.0.x/spring-framework-reference/html/beans.html#context-functionality-events
> * using the proactive handlers you mentioned, we might be able to
> introduce a kind of authorization management into neo4j.
>
> Regards,
> Stefan
>
> Tobias Ivarsson schrieb:
&g
gt; > >
> > > > * There are three kinds of events in Neo4j kernel:
> > > > - Lifecycle events, such as shutdown.
> > > > - Transactional events, such as start commit, commit successful,
> > > rollback,
> > > > etc.
> > > >
tabase object in my
> class. But this makes the code verbose.
> Please suggest.
>
> Thanks,
> Subhajit
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Ha
Sorry, we have not had time to look into that yet. I'll let you know when we
have.
On Mon, Apr 5, 2010 at 12:31 PM, Laurent Laborde wrote:
> Any news ?
>
> --
> Ker2x
>
> On Fri, Mar 26, 2010 at 12:05 PM, Tobias Ivarsson
> wrote:
> > Ok, thanks. We'll look
/main/java/org/neo4j/examples/treetraverse/TreeTraverse.java
>
> Here's an image of the nodespace:
>
> http://github.com/neo4j-examples/java-tree-traverse/blob/master/src/main/model/nodespace.png
>
>
> /anders
> ___
> Neo m
on.__init__(self, '"%s" in "%s"' % (child, parent))
On Wed, Apr 7, 2010 at 9:52 AM, Tobias Ivarsson <
tobias.ivars...@neotechnology.com> wrote:
> Whow. that's a mouthful, Python to the rescue ;)
>
> Here is how I'd color this bike shed <ht
t; you are unlikely to want the nodes in the traversal order. In my mind it
> would be nice to allow the return evaluator to return a 'sorting value'
> that
> indicates that nodes rank in the result set. E.g. sorting on a score
> attribute of the node:
>
> function shouldRe
All the stars added by gmail? - yeah, that was scary. I had no idea gmail
did that.
On Wed, Apr 7, 2010 at 12:00 PM, Laurent Laborde wrote:
> On Wed, Apr 7, 2010 at 9:52 AM, Tobias Ivarsson
> wrote:
> >
> > *def* get_node_from_path(start, path, include_symlinks=True)*:*
>
-Java/Java.pod
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amianm.com/tech/building-a-rest-client-with-wcf/
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gt; 3. Do not lend beyond end leasing date
> 4. Do not lend beyond end membership date
> 5. Query Student-book relationships (What books were borrowed/reserved, who
> was the publisher, what was the book club) for a given date range
>
> How do we model the date in Neo4J?
> Re
on a node to be processed as a
> single entity?
>
See my answer to the "folding" question.
>
> Looking forward to seeing how this all materializes!
>
> Rick
>
>
>
> -Original Message-
> From: user-boun...@lists.neo4j.org [mailto:user-boun...@l
tural / useful to add sorting as well. What I want to avoid
is keeping state on the server while waiting for the client to request the
next page.
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n
Peace,
Tobias
On Thu, Apr 8, 2010 at 10:17 PM, Michael Ludwig wrote:
> Tobias Ivarsson schrieb am 08.04.2010 um 18:23:27 (+0200)
> [Re: [Neo] Traversers in the REST API]:
>
> > On Wed, Apr 7, 2010 at 3:05 PM, Alastair James
> > wrote:
>
> > > when we star
for(Relationship r:relationships)
>{
> Node end = r.getEndNode();
> .
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the "outgoing relationships"
> value.
> >
> > So, whats the correct way to do this? Is this a bug, or is it that I need
> > to pass in a HTTP header to signal its unicode? Is the problem that (as I
> > beleive java uses UTF-16 internally) its outputting the wrong c
String.valueOf(
> builder.clone().build().getEntity().toString().length() ) );
>
> Won't that set the content length to the number of characters NOT bytes?
>
Yes, I believe you've nailed it, that does very much look like the cause of
this. I'll get on t
ge data that is passed to the
event handler methods.
* It would even be possible (but a bad idea) to fire of further synchronous
events.
The code of the API draft is available for checkout at:
https://svn.neo4j.org/laboratory/components/event-framework/
A browsable version is available at:
https://tra
Apparently this message didn't make it to the mailing list.
-- Forwarded message --
From: Tobias Ivarsson
Date: Thu, Apr 15, 2010 at 11:38 PM
Subject: Re: [Neo] Batch Insert in Python
To: Neo user discussions
The Python bindings don't expose the BatchInsert API at
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I just received a failed delivery notification for this message that I sent
a week ago, so here it is again.
-- Forwarded message --
From: Tobias Ivarsson
Date: Thu, Apr 15, 2010 at 11:42 PM
Subject: Re: [Neo] Performance question
To: Neo user discussions
On Thu, Apr 15, 2010
Apparently this email that I sent six days ago didn't make it to the list,
here it is again.
-- Forwarded message --
From: Tobias Ivarsson
Date: Thu, Apr 15, 2010 at 11:20 PM
Subject: Re: [Neo] REST blog post
To: Neo user discussions
On Thu, Apr 15, 2010 at 7:12 PM, Ala
t;something inbetween", Neo4j
will look at relationships of more types, but only the ones of the specified
types are actually loaded. This will change in an upcoming version to only
look at the relationships of the actual specified types.
Cheers,
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tly with MSN Messenger! Download today it's FREE!
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ww
fo/user
> >
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> >
>
>
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and I will not stop you, I just think that the utilities we endorse
should be utilities that encourage good code (see above).
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ing up already just with one Thread in the
> ExcecutorPool. Thx for your help.
>
>
>
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fBirth"})
>public void setNameAndInstantOfBirth(String newName,Instant
> instantOfBirth){
>this.name = newName;
>this.instantOfBirth = instantOfBirth;
>}
>
>
> }
>
>
>
> Sorry if i am boring you guys, but i think neo4j is the way to go on
> persistence...
>
Not bored at all. And I apologize for not responding to this sooner, I've
been traveling.
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tionFailureException: Unable to
> > rollback transaction
> >at
> >
> org.neo4j.kernel.EmbeddedGraphDbImpl$TransactionImpl.finish(EmbeddedGraphDbImpl.java:349)
> >at ConcurrentTest$1.run(ConcurrentTest.java:62)
> >at
> >
> java.util.
f
> it looks interesting it could be moved to a neo4j subproject.
>
>
Nice. Does BaduDB expose an XAResource? that would make it a whole lot
easier to integrate with the transaction system of Neo4j.
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Cell
getBranchId() { ... }
}
There is also a dynamic MBean for getting all the configuration parameters
Neo4j was started with.
It has the ObjectName: org.neo4j:instance=*,name=Configuration
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mething?
>
> Thanks.
>
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rnNode instances can match the same
> node if the constraints are ok.
>
> How could I precise that the node matched by the first PatternNode has to
> be different from the node matched by the second PatternNode?
>
> Thank you very much
>
> Fabrice
>
>
>
>
>
>
>
>
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in the LICENSE.txt file I see Apache license.
>
> So which is it?
>
>
> --
>
> Regards,
> mk
>
> --
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> Hi,
>
> Just curious, anyone has numbers about the performance of pattern matching
> in neo4j? Is it possible to use with thousands or millions of nodes?
>
> []s
> Gutemberg
>
>
>
> On Mon, May 10, 2010 at 7:36 AM, Tobias Ivarsson <
> tobias.ivars...@neotechn
rstand now, you must say where the
> match should happen, that's why the size of the graph doesn't matter,
> right?
>
right.
>
> Great explanation, Tobias!
>
Thank you :)
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hope you can say anything about that.
>
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#x27;t call tx.success() at the end of a transaction that
> just read data, thus triggering a rollback. Is there any downside to
> doing this?
>
> Garrett
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}
>}
>}
> return false;
>}
> }
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nd
> only one type of relationship since they are the structures that social
> network researchers are the most interested in.
>
> Thanks,
> Alex
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> http
erCompletion
> WARNING: Caught exception from tx
> syncronization[org.neo4j.kernel.impl.core.transactioneventssynch...@edf3f6
> ]
> afterCompletion()
>
> Code details:
>
> URL: https://svn.neo4j.org/components/kernel/trunk
> Repository Root: https://svn.neo4j.org
&
t;
>
>
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end up being C=1, D=2,B=3 and A=4. I'd like to
> >> generate random traversals, so that in the DFS the traverser chooses
> >> the children in random order. By this way I will get many valid
> >> post-order labelings.
> >>
> >> Is this possible in the cu
t lost here. I would greatly appreciate any pointers on how to do this
> with a SourceSelector or whatever is the right weapon of choice for this
> problem.
>
> Thanks and best regards,
> Georg
>
>
> On 30.03.2010 15:48, Tobias Ivarsson wrote:
>
>> It seems a lot o
ly in memory, but I'm really excited
> about neo4j's support for persistence and transactions.
>
> Thanks for any input you have on this. Best,
>
> JP
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> Kevin Raison
> Founder, CTO
>
> Chatsubo.net, LLC
> 9708 1st Ave NW
> Seattle, WA 98117
> rai...@chats
010 at 9:05 PM, Rick Bullotta <
rick.bullo...@burningskysoftware.com> wrote:
> Sounds a lot like "code" ;-)
>
> Rick
>
> -Original Message-
> From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
> On
> Behalf Of Tobias Ivarsson
>
eo mailing list
> >> User@lists.neo4j.org
> >> https://lists.neo4j.org/mailman/listinfo/user
> >
> > _
> > Express yourself instantly with MSN Messenger! Download today it's FREE!
> > http:/
.neo4j.graphdb package which should be
> exported from the kernel bundle. Poking around I can't really find a change
> that would have mattered, but maybe someone else with more OSGI experience
> can help out?
> >>>>>>
> >>>>>> Also
x27;s coolest Bring-a-Thing party.
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> import org.neo4j.kernel.EmbeddedGraphDatabase;
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j.run(BackupNeo4j.java:49)
> >
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inebackup.Neo4jBackup.doBackup(Neo4jBackup.java:196)
> at util.BackupNeo4j.run(BackupNeo4j.java:49)
>
> Thanks
>
> Le 09-juin-10 à 14:21, Tobias Ivarsson a écrit :
>
> > You could also use this code to print the classpath:
> >
> >//Get the System
up.
> at org.neo4j.onlinebackup.Neo4jBackup
> $Neo4jBackupTask.prepare(Neo4jBackup.java:362)
> at
> org.neo4j.onlinebackup.Neo4jBackup.runMultiBackup(Neo4jBackup.java:
> 262)
>at org.neo4j.onlinebackup.Neo4jBackup.doBackup(Neo4jBackup.java:196)
> at util.BackupNeo4j.run(B
Because
> if I understand, you mean that I need to use the code
> "keepLogicalLogs( true )" in the same class where I do my backup?
> Sorry for my misunderstanding,
>
> Best,
> Bat
>
> --
Tobias Ivarsson
Hacker, Neo Technology
www.neotechnology.com
Cellphon
this work.
The way I would design something like this is to let the key be a
combination of index key and index value, then let the value be a list of
ids. But I don't know what the concurrency aspects would be for BaduDB in
this case. Is there a way to lock an entry while modifying it, or are
massive volumes and then doing lookup based on prefixLookup.
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t; Ticket URL: <https://trac.neo4j.org/ticket/239>
> neo4j.org <http://trac.neo4j.org/>
> The Neo4J.org Issue Tracker
>
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person = new Person (hit);
> break;
> }
> }
> }
> } finally {
> tx.finish();
> }
> }
> return person;
> }
> ---
>
> Anything wrong ?
>
> Appreciate any advice!
> rgds,
> canal
>
>
>
>
>
lExpander, costEval, estimateEval );
> Path path = sp.findSinglePath( NYC.getUnderlyingNode(),
> SF.getUnderlyingNode() );
>
> thanks
> Paddy
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, so please submit
comments in this thread on what you think about this API.
Happy Hacking,
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