The void is spreading. Beware.
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.
So, I am able to copy and paste - do you have a screenshot or so on what
you are trying to do?
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
Hey,
I have a very complex domain model which can be perfectly mapped into the
neo4j database. OR Mapping is much too complex for the model... The data
itself is time series data from multiple sensors which needs to be stored
and retrieved (at given timestamps or in given ranges). Are there any
Done,
enjoy! https://github.com/neo4j/community/issues/80
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 -
Hi all,
I'm currently writing a server plugin. I need it to make some specialized
queries that are not supported by the standard REST API. The important methods
I expose are 'query' and 'get_next_page', the latter to support results
pagination (i.e. the plugin is stateful).
In 'query', I run
And sometimes I get the 'Error 500 Java heap space' too. I don't know if this
is a separate problem or if it's the same. (And this can happen after several
pages have already been fetched, which I find peculiar.)
From: andli...@hotmail.com
To: user@lists.neo4j.org
Subject: Server plugin
Anders,
how many items are you holding in that representation list? Also, it could
be that the deserialization is taking up memory. Can you test just
returning a constant string (not building up memory) and check if that
changes anything? In that case we could track it down to the REST String
What version of Neo4j are you using? This query is valid syntax for 1.4.x
and 1.5.M01.
I'm using version 1.4.1
Later you would want to use:
start a=node:nodeIndex(identifier='0') return a
I tried that and got the error:
org.neo4j.cypher.SyntaxException: `' expected but `n' found
On Tue, Nov 15, 2011 at 3:50 AM, gsingh93 gsingh_2...@yahoo.com wrote:
What version of Neo4j are you using? This query is valid syntax for 1.4.x
and 1.5.M01.
I'm using version 1.4.1
If possible, you should upgrade to 1.5.
Later you would want to use:
start
'get_next_page' actually returns a ListRepresentation of ListRepresentations.
The number of items in the outer list is what I call page size. I have varied
this parameter and it seems that the page size by itself does not really
matter. I have queries which consistently get returned correctly
I came up on Aleksa Vukotic's blog post (
http://www.aleksavukotic.com/2011/07/neo4j-super-nodes-and-indexed.html )
and realized his IndexedRelationshipExpander with some tweaks would work for
this purpose.
relationship_auto_indexing=true
relationship_keys_indexable=dated,measured
This
Hi Anders,
How much heap are you giving the JVM? When it worked with tons of memory,
how much heap did you give?
Maybe you could also try changing the garbage collector used in
conf/neo4j-wrapper.conf. Just add these lines:
wrapper.java.additional.20=-XX:+UseConcMarkSweepGC
I setup visualvm with a jmx connection to the server running neo4j I wasn't
able to CPU profiling working, it had an error message saying
getThreadCpuTime was expecting long but got something else. I do have thread
and heap dumps though if those would be useful.
When I was running the batch
In the short term, I've gotten around this issue by extending the
SpatialPlugin to add a method for searching within a distance of a point in
a layer. Can I get this merged into the baseline? I have created
https://github.com/neo4j/spatial/issues/27 an issue on Github.
--
View this message in
First off, thanks for py2neo. I think i found a bug that prevents from
using javascript filters when traversing over rest:
http://py2neo.org/docs/api/py2neo.neo4j-pysrc.html#TraversalDescription.filter
Instead of body, key is named name. Since you're on vacation i've
taken justice of sending you
Hey guys,
I just wanted to follow up on this. After some more digging, I had some
people suggest Introductory Graph Theory by Gary Chartrand. It seems to be
an excellent text for a beginner, but I will update this post once I get
through the rest of the book.
Also, Max and Rick's suggestions
Hi Krzysztof
Yes, certainly looks like it's a bug, however I'm convinced this has changed
from the original REST docs on which I based this code. Can't find a copy
though and since your fix looks to apply to both 1.4 and 1.5 then
consider it merged!
Thanks for your help :-)
Nige
*Nigel Small*
No problem, on the other hand the name parameter is still valid,
since there are two named filters: all and all_but_start_node, and
whatever filters someone may add themselves.
I also have one issue with Node class, i really like the way original
JPype bindings work - i.e. i can use
Thanks for all the feedback, very helpful information.
Do you think after finishing the book, you could write up a blog post about the
literature you've been suggested so far and
what you found helpful for people starting to dive into graphs, that would be a
valuable resource. This and the last
Reminds me of:
http://qconlondon.com/london-2009/presentation/Null+References:+The+Billion+Dollar+Mistake
On 15 November 2011 08:15, Peter Neubauer
peter.neuba...@neotechnology.comwrote:
The void is spreading. Beware.
Cheers,
/peter neubauer
GTalk: neubauer.peter
Skype
So that we can support both, I've made some further changes to the
TraversalDescription class. I have replaced prune and filter with:
builtin_prune_evaluator(self, name)
prune_evaluator(self, language, body)
builtin_return_filter(self, name)
return_filter(self, language, body)
This does break
No need to, i submitted a pull request with that change. I will also
submit my proposed index syntax changes. I'm no good at git, so i may
or may not screw this up.
As far as changes you wrote about, i think we should move it to one
method, and rely on arguments supplied by user to know which
Hi Krzysztof
Having looked at your Pull Request, I can see that your syntax certainly
provides a easy and readable way to create relationships to nodes. However,
I have a couple of reservations:
1. This essentially uses a get operation to carry out a write behind
the scenes. I would generally
Hi all,
I released version 0.1.0 of the Neo4j Scala Wrapper neo4j-scala (base is
neo4j-scala by jawher).
Main features are
- simple Traits for the wrapper itself, GraphDatabaseService provider,
index provider and batch insertion
- transaction wrapping:
withTx {...}
- natural usage of
Dear all,
Big thanks for the replies i got from the mailing list.
What is the best way to traverse the graph?
In our social network project , i use the node. traverse API to traverse
the database. i heard there are other sql like query languages. can i
have comparison over these.
are the query
This seems to be a bug in Lucene 3.1.0 and I can confirm that it doesn't
exist in 3.4.0, so I'm hoping neo4j will update the dependency soon.
2011/11/12 Mattias Persson matt...@neotechnology.com
It looks to be a bug. I ran the test case and while it's supposedly should
work it doesn't... I'll
When guaranteed uniqueness on index-level is supported this can probably be
implemented. Have one indirection in an index adds overhead but I image
it's only for one or more starting points and then it's internal ids all
the way from there.
2011/11/9 Michael Hunger
Yeah, I'd love a reproducible test case for this, if such exists
2011/11/10 Peter Neubauer peter.neuba...@neotechnology.com
Wow,
never seen this before, do you have a full testcase to reproduce this?
Cheers,
/peter neubauer
GTalk: neubauer.peter
Skype peter.neubauer
Phone
28 matches
Mail list logo
