I like,
very cool Rickard! Is this in a doc-able state so we could add a test
for the manual in the Cypher section?
Cheers,
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On 11/4/11 15:18 , Peter Neubauer wrote:
I like,
very cool Rickard! Is this in a doc-able state so we could add a test
for the manual in the Cypher section?
Well, the whole thing is very much subject to change, but it could still
be doc'ed to some extent.
/Rickard
--
Rickard Öberg
On Fri, Nov 4, 2011 at 7:11 AM, KanTube mich...@mkanner.com wrote:
i am just a little confused on this. are you going to still keep the
syntax
with a : for relationship ie.
START n=node(3)
MATCH (n)-[:BLOCKS]-(x)
RETURN x
and then if you wanted to have a more complex match you would do
1.5 will (unlike 1.5.M02) be able to detect this.
2011/11/4 Romiko Derbynew romiko.derby...@readify.net
Hi Guys,
Is it possible to fix this in future release or not, this means in the
event of a unclean shutdown, a regression is needed or is it possible to
had detection if the old db was
On Nov 4, 2011 3:11 AM, Rickard Öberg rickard.ob...@neotechnology.com
wrote:
Hi,
I've briefly started to look at how to map Cypher query results into
DTO's. I'm using the QueryDSL helper classes to do it, but instead of
putting the projection methods into the query object (as QueryDSL does
On 11/4/11 17:29 , Daniel Yokomizo wrote:
What are the projection methods that you would like to see? What are
common usecases?
Supporting @java.beans.ConstructorProperties is nice because we can use
immutable objects as dtos.
Right, that is a good point, and that will definitely be
I started a prototype for something similar a while back:
https://github.com/thobe/neo4j-community-experiments/tree/cypher-annotations
It has a different approach to constructing queries, it uses annotations
with query strings in them, but uses compile time annotation processing to
process those
On Fri, Nov 4, 2011 at 10:45 AM, Rickard Öberg
rickard.ob...@neotechnology.com wrote:
On 11/4/11 17:29 , Daniel Yokomizo wrote:
What are the projection methods that you would like to see? What are
common usecases?
Supporting @java.beans.ConstructorProperties is nice because we can use
I've just pushed an update to handle the attachThreadToJVM stuff
automatically, I ran your test, Michael, on the DB after that, and it seems
to shut down properly. You may want to double check though.
You can build this now, by checking out
https://github.com/neo4j/python-embedded/ and following
interesting article.
Could it be stored in neo4j ? :)
http://highscalability.com/blog/2011/11/3/paper-g2-a-graph-processing-system-for-diagnosing-distribute.html
(i hadn't time to read the paper yet, just the article)
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Sysadmin DBA at http://www.over-blog.com/
Hi all,
Being a newbie to neo4j/Cypher, didn't come to a solution myself, so I try
it here: how can I query for a set of nodes which have no incoming relation
of a specific type? Something like
START callee=node:node_auto_index('type:*Service') MATCH
p=(caller)-[:CALLS]-(callee)
RETURN p
Hi Johann,
There's a workaround that works, but it's not as nice as I'd like it to be.
What you can do is this:
START callee=node:node_auto_index('type:*Service')
MATCH p=(caller)-[r?:CALLS]-(callee)
WHERE r IS NULL
RETURN p
It solves your problem with optional relationships.
HTH,
Andrés
On
Thanks Andres!
I already tried the optional relationship thing, but not the WHERE clause.
However, there is a problem which I have with or without the WHERE (I'm
using neo4j 1.5M02):
START callee=node:node_auto_index('type:*Service') MATCH
p=(caller)-[r?:CALLS]-(callee) WHERE r IS NULL RETURN p
It's a known (and solved) problem. You can either update to snapshot, or
just reverse your path description:
MATCH p=(callee)-[r?:CALLS]-(caller)
Sorry about that...
Andrés
On Fri, Nov 4, 2011 at 1:42 PM, jschweigl johann.schwe...@gmail.com wrote:
Thanks Andres!
I already tried the
Reversing resulted in the same exception, so I'll try and get the latest
snapshot. Thanks a lot for your help!
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Hi Laurent,
I believe this could managed by Neo4j since it's similar to systems already in
production.
Jim
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Downloaded 1.5-SNAPSHOT (two times: the windows community and enterprise
flavor). No change, no matter if the relation points back or forth.
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On Fri, Nov 4, 2011 at 2:57 PM, jschweigl johann.schwe...@gmail.com wrote:
Downloaded 1.5-SNAPSHOT (two times: the windows community and enterprise
flavor). No change, no matter if the relation points back or forth.
I just realized what the problem is. (It's my fault)
You are putting the
You are awesome. I'll check this out soon; I switched my project back to
using sqlite, but I definitely want to use neo, so I'll give it a whirl.
On Fri, Nov 4, 2011 at 4:12 AM, Jacob Hansson
jacob.hans...@neotechnology.com wrote:
I've just pushed an update to handle the attachThreadToJVM
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
I'm very new to much of this, and have a particularly ingrained relational
slant to my career, unfortunately.
I'm in the process of doing a proof of concept for a product, using neo4j,
and gremlin over REST (we're developing in c#) What I'm trying to do at the
moment is load a graph (representing
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
On Nov 4, 2011 7:45 AM, Rickard Öberg rickard.ob...@neotechnology.com
wrote:
On 11/4/11 17:29 , Daniel Yokomizo wrote:
What are the projection methods that you would like to see? What are
common usecases?
Supporting @java.beans.ConstructorProperties is nice because we can use
immutable
Yep, the syntax changed between milestones.
Docs are here: http://docs.neo4j.org/chunked/snapshot/cypher-query-lang.html
Expect more and more radical changes ahead :)
Michael
Am 04.11.2011 um 17:16 schrieb andrew ton:
Hi,
I'm using Neo4j REST 1.5 -SNAPSHOT. In the console I always get
Hi all,
moving this discussion to the community, it is very important getting
your feedback! Including Andres' original post on top again ...
2011/11/4 Andres Taylor andres.tay...@neotechnology.com
Good afternoon, gentlemen.
I've been involved in a sales thingie, and had to translate SQL to
One question, and I bet I won't be the only one asking it...
If SQL is the target to mimic, why not WHERE instead of PATTERN ?
Otherwise, wouldn't xQuery be perhaps an even more logical target?
Peter Hunsberger
On Fri, Nov 4, 2011 at 12:58 PM, Peter Neubauer
Hi,
like this, people familiar with SQL (which are many) don't have to
think, they just read and understand.
+1
Axel
Am 04.11.2011 18:58, schrieb Peter Neubauer:
Hi all,
moving this discussion to the community, it is very important getting
your feedback! Including Andres' original post on
Hi,
I would do it like this:
m = [:]
g.v(162).in('R_PartOf').loop(1){m.put(it.object, it.loops); true} -1
m.sort{a, b - a.value = b.value}.keySet as List
In short, fill up a Map (m) with key being the vertex and value being the
number of hops (or times through the loop). Then sort the map by
My take on this is to not use a SQL-like query language.
The reason is that while it looks like SQL it is not SQL, and the subtle
differences would be more confusing than with using a query language
that doesn't share SQL-like constructs.
-TPP
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Can you do it on one line? ;)
Great stuff.
Cheers,
/peter neubauer
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http://www.neo4j.org - NOSQL for the
Sure:
m = [:]; g.v(162).in('R_PartOf').loop(1){m.put(it.object, it.loops);
true}.cap.next().sort{a, b - a.value = b.value}.keySet []
Marko.
http://markorodriguez.com
On Nov 4, 2011, at 12:17 PM, Peter Neubauer wrote:
Can you do it on one line? ;)
Great stuff.
Cheers,
/peter
Markus,
have you tried the SBT classifiers to get to the same result like Ivy?
http://code.google.com/p/simple-build-tool/wiki/LibraryManagement#Classifiers
Cheers,
/peter neubauer
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On Fri, Nov 4, 2011 at 7:04 PM, Peter Hunsberger peter.hunsber...@gmail.com
wrote:
One question, and I bet I won't be the only one asking it...
If SQL is the target to mimic, why not WHERE instead of PATTERN ?
PATTERN is a new construct, not replacing WHERE. WHERE is still in
Seems if you're trying to mimic SQL it would be a shame if the most common
construct was the least SQL like. At an abstract semantic level (ie, not
digging into the code or real usage) PATTERN and WHERE seem close enough
that perhaps you can unify them?
In any case, I wouldn't say xPath is just
I tried it initially but couldn't get it to work because as soon as I
included the static-web classifier, the server jar was apparently not
used.
I opened a thread in the sbt group
(http://groups.google.com/group/simple-build-tool/browse_thread/thread/15639ba10ddec6cd)
but didn't get a response
I think the reason we're even having this discussion is because the cypher
syntax is close, but not quite SQL in the first place. This makes the
differences between the two languages stick out in my mind.
I haven't had a lot of time on cypher, but as a newbie to the language I see
a cypher
2011/11/4 maxdemarzi maxdema...@gmail.com
I think the reason we're even having this discussion is because the cypher
syntax is close, but not quite SQL in the first place. This makes the
differences between the two languages stick out in my mind.
I haven't had a lot of time on cypher, but
At first glance i like the new syntax. I am a bit confused on Andres comment
that PATTERN is a new construct and is not replacing WHERE. But if you are
able to reproduce everything with this new syntax I am all for it. and if
you are going to make this change - the sooner the better.
not to
Can we make the ascii art more readable?
From:
lucy-[:ACTS_IN]-movie
What are some options:
lucy[:ACTS_IN]-movie # lose the second - by attaching the relationship to
a node
lucy[:ACTS_IN]movie # instead of ---
lucy[:ACTS_IN]-movie #instead of --
lucy[:ACTS_IN]=movie #instead of --, using =
I'd say the strongest part of Cypher is the ascii art pattern where you
clearly see what you're querying for, right there and then without having
to parse it into a graph into your head. Removing that would reduce my
interest in this language significantly.
I strongly agree with this. It's
Also agree. Using several illustrative symbols instead of one cryptic one
adds a considerable amount of readability as the expense of negligible
overhead. Since the - sequence is also used in C as a pointer operator,
it's nothing new.
*
*
*Nigel Small*
Phone: +44 7814 638 246
Blog:
Tero Paananen wrote:
Additionally I don't find adding a join keyword to a query language that
queries a data store that has no joins better in any shape or form.
That is one way of looking at it, another way of looking at it is that all
the tables are already joined.
Not sure how we can
On Fri, Nov 4, 2011 at 8:58 PM, KanTube mich...@mkanner.com wrote:
At first glance i like the new syntax. I am a bit confused on Andres
comment
that PATTERN is a new construct and is not replacing WHERE.
I'll use old-school Cypher to illustrate my the difference here. Cypher's
MATCH clause
On Fri, Nov 4, 2011 at 10:17 PM, maxdemarzi maxdema...@gmail.com wrote:
Tero Paananen wrote:
Additionally I don't find adding a join keyword to a query language that
queries a data store that has no joins better in any shape or form.
That is one way of looking at it, another way of
Andres Taylor wrote:
Love the idea. Why didn't I think of that? All of Cypher is made out of
bits and pieces that I've stolen from others anyway - I think I want to
steal this one too.
Ha!
Max De Marzi wrote:
That is one way of looking at it, another way of looking at it is that
Hi guys,
i just migrated from SDG 1.1 to 2.0.0.M1 and I am facing problem with
cross-store functionality. I have some entities which are partially stored
in Neo and partially in rdbms. Everything works ok so far entity class has
only primitive members or sets of other entities mapped using
Thanks! I will still need to try this out, but the idea (in your first
response) kind of feels more or less like what I knew I needed. I have so
many questions now based on the responses so far - it feels like I'm just
scratching the surface!
Firstly, could you explain the differences between map,
is there a way to Import/Export a style profile or someway to move a profile
between db instances ?
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Hi,
Thanks! I will still need to try this out, but the idea (in your first
response) kind of feels more or less like what I knew I needed. I have so
many questions now based on the responses so far - it feels like I'm just
scratching the surface!
Once you get it, you can get nasty with
Hi
I tried the .toString() and it throws the same error. Which is strange,
since in the RepresentationConverter, the string should be returned fine if
no other representation is found. Could the error be somewhere else?
I also forked the Gremlin plugin, but need to get familiar with it (first
Jure,
you could just write a testcase that does exactly this - send
g.getRawGraph()
to the plugin and check what is happening
(GremlinPluginFunctionalTest) in the debugger. Let's connect next week
if you can't sort it out?
Cheers,
/peter neubauer
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Skype
Kan,
these are right now saved on the browser (client), but Jake and I have
been talking about being able to store the profiles, so you can import
them together with a dataset and have a suitable visual view for a
demo setup.
Could you raiss an issue in https://github.com/neo4j/community/issues
Yes,
I think Ivy is not resolving the transitive deps correctly either, so
try duplicating parts of the neo4j manual Ivy setup in your inline Ivy
(I think I had to pull in Jetty stuff and others explicitly). Sorry
for Ivy not being fully Maven compliant - that sometimes sux!
Cheers,
/peter
I also strongly agree. In my discussions with interested people and customers
this always stood out when pulling cypher to query their data.
They could instantly recognize which parts of their structure are taking part
in the query.
Michael
Am 04.11.2011 um 21:36 schrieb Tero Paananen:
I'd
Yes, relateTo can only be used in Node Entities as Neo4j only allows linking
Nodes with Relationships.
What is your use-case ?
Cheers Michael
Am 01.11.2011 um 06:29 schrieb Gonfi den Tschal:
(using sdg 1.1.0RELEASE)
when using @RelatedToVia in a @RelationshipEntity i get a strange
This! A thousand times this! Whenever I'm trying to explain how you find
connected information without joins, people's eyes tend to glaze over until
I a) draw the graph on the whiteboard, b) write out the Cypher query
_directly_inside_the_graph_. That's the no f-ing way! moment for most
people to
Mattias Persson-2 wrote:
2011/11/4 maxdemarzi lt;maxdemarzi@gt;
I'd say the strongest part of Cypher is the ascii art pattern where you
clearly see what you're querying for, right there and then without having
to parse it into a graph into your head. Removing that would reduce my
interest
Any custom JVM switches do not work.
Sent from my iPhone
On 03/11/2011, at 8:56 AM, Tatham Oddie tat...@oddie.com.au wrote:
Any tips on where to start?
I'm going to go looking for ServerProcessConsole.java but any other pointers
are welcome. :)
Windows
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On 04/11/2011, at 11:40 AM, Peter Neubauer peter.neuba...@neotechnology.com
wrote:
Romiko,
is this on Windows or Linux?
Cheers,
/peter neubauer
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