http://stackoverflow.com/questions/37823552/neo4j-ogm-neo4jsession-variable-substitution-queries-fail
I posed the question on stack overflow, but I wanted to pose it here too.
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Actually, I was just curious and couldn't find documentation. I'd been
using spring-data-neo4j, and their old neo4jOperations interface used to be
able to fetch the Node objects. I found some old code that made use of
that facility, and wanted to find out if I needed to refactor, or if I just
I'm using neo4j 2.3.3 server. Is there anyway to get a Node object?
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So apparently this is an OLD neo bug:
https://github.com/neo4j/neo4j/issues/37
https://github.com/neo4j/neo4j/issues/6823
and finally:
https://github.com/neo4j/neo4j/issues/7288
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namicAopProxy.invoke(JdkDynamicAopProxy.java:208)
at com.sun.proxy.$Proxy85.load(Unknown Source)
...
If I dig in with a debugger, it's actually just the same exception.
On Tuesday, May 31, 2016 at 5:06:52 PM UTC-7, Michael Hunger wrote:
>
> SDN 4.1.1 with OGM 2.0.2
>
> > Am
The latest version of OGM addresses neo4's flakiness by adding in "retry"
functionality for these specific exceptions. I haven't seen it since
upgrading.
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Which of those dependencies should I upgrade? You mean neo4j?
Thanks!
Eric
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Was this problem ever resolved? I still see it consistently. I'm running
neo4j 2.3.3, ogm version 1.1.4, and using neo4j template from
spring-data-neo4j 4.0.0.RELEASE.
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I'm using Neo4j 2.3.3 and spring-data-neo4j in a highly threaded
environment where I attempt lots of reads/writes, and I often get
NoHttpResponseException (which means neo didn't respond). This happens
most frequently on reads when I'm using a
Neo4jOperations object to load domain objects to a
I'm sorry, I'm not sure exactly what you mean by query scan. I haven't
changed any of the queries from before the addition of the uniqueness
constraint. I'm still doing the same "MERGE ..." query (like above, but
with parameters, as you pointed out). Do you mean that, or something else?
Than
So before the constraint, I was still using merges because I really did
want something akin to uniqueness for these nodes. We had an index on the
"uid" so maybe that helped with the full scan?
Yes, I use parameters, not literal values.
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This is version 2.3.3
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When I add data to the database, I use a merge something like this:
MERGE (n:Thing { uid : }) ON CREATE SET n.prop1 = blah1, n.prop2
= blah2 ...
Since I'm working in a multi-threaded environment, it's possible to have
the same node written twice and I've seen many instances where duplicate
no
I'm still seeing 10x performance hit from a uniqueness constraint being
added. Is this on the roadmap to be addressed?
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The merge is not done by hand so the rel name will be consistent every
time. I'm going to see if I can reproduce it.
A little more information:
Initially, that start node had two relationships
A-[produces]->B
A-[produces]->C
The problem showed up after detach-deleting C after which we had:
That's good to know. As I've said before, we are not executing in a
threaded environment.
Thanks,
Eric
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>
> So in this case, the query is actually a MERGE.
>
MATCH (a:SecretObject {uid: {1}}),(b:SecretObject {uid: {2}}) "MERGE
(a)<-[r:`%s`]-(b)
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We are not doing any concurrent transaction, so that theory is out.
Appreciate the suggestion though.
Thanks,
Eric
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I've attached an image of what i'm talking about.
I'm not sure how this can happen or how to undo it. Does anyone know?
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t
>
>
>
> Am 22.03.2016 um 21:53 schrieb 'Eric Fulton' via Neo4j <
> ne...@googlegroups.com >:
>
> I've got this query:
>
> @Query(MATCH (n:SomeObj)-[*1..1]->(b) where n.id = '1' RETURN *)
> public SomeObj getSomeObjectByIdD1(String id
I've got this query:
@Query(MATCH (n:SomeObj)-[*1..1]->(b) where n.id = '1' RETURN *)
public SomeObj getSomeObjectByIdD1(String id);
It doesn't seem to be returning the relationships to depth one as I would
expect. Is this not possible?
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oh please answer me
On Wednesday, March 9, 2016 at 3:45:01 PM UTC-8, Eric Fulton wrote:
>
> Is it safe to return a list instead of an Iterable in a Neo4j Spring Data
> Repository?
>
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Is it safe to return a list instead of an Iterable in a Neo4j Spring Data
Repository?
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You have to add the base package to the session during neo4j configuration.
Unbelievable that this isn't documented. I just wasted half of my day.
Good luck everyone else.
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http://docs.spring.io/autorepo/docs/spring-data-neo4j/4.0.x-SNAPSHOT/reference/html/#reference_programming-model_conversion
> Built-In Type Conversions
> By default, Spring Data Neo4j will automatically perform the following
> type conversions:
> java.util.Date to a String in the ISO 8601 format:
Hello
I have a client server setup, both of which are dependent upon the same
domain objects. As things stand, the server depends on the client and
subclasses the domain objects in order to add in the neo4j annotations.
This enables me to exclude the neo4j dependencies from the client to keep
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