You can't stop it, it's part of the concept of identifying the concrete class
for the entity that was inserted for this node. If that entity is part of an
inheritance hierarchy you'll have a label for every level. And you have to be
able to identify which label is the actual concrete entity-class.
Michael
Am 13.06.2014 um 11:47 schrieb PM <pallavi...@gmail.com>:
> Hi Michael,
>
> Could you plz help me out to stop creating labels with _ in SDN , and also i
> m not understand with termonology inheritance hierarchy in SDN.
>
> On Thursday, 12 June 2014 17:16:36 UTC+5:30, PM wrote:
> Thanks for reply Michael,
>
> But what is the use of this _ one and it will also the case if i will craete
> label using core java api , cypher query or it is specific to SDN only?
>
>
>
>
> Thanks,
> Pallavi
>
>
> On Thursday, 12 June 2014 17:02:34 UTC+5:30, Michael Hunger wrote:
> It needs the labels with the underscore to identify the one which actually
> belongs to this class (in the inheritance hierarchy).
>
> Michael
>
> Am 12.06.2014 um 14:28 schrieb PM <palla...@gmail.com>:
>
>> Hi Michael,
>>
>> I am also facing the same issue creating node labels one with underscore and
>> another without underscore. I m using SDN 3.0.1 & Neo4j 2.0.3 . Is this SDN
>> specific or there should be some configuration in SDN so i can stopped
>> labels creating with underscore.
>>
>>
>>
>>
>> Thanks,
>> Pallavi
>>
>> On Tuesday, 10 June 2014 20:44:52 UTC+5:30, Michael Hunger wrote:
>> Hmm interesting.
>>
>> Can you return two of the different nodes side by side?
>>
>> Do you only have movies in your db?
>>
>> Michael
>>
>> Am 14.05.2014 um 13:25 schrieb Manuel Moraga <manuel.mor...@gmail.com>:
>>
>>> I have already posted this on StackOverflow, but haven't gotten any
>>> answers. I suspect there may be a bug involved, or it's just a gotcha that
>>> I must have missed somewhere. I have tried everything I could think of, and
>>> checked the documentation but still can't find the reason why my nodes
>>> can't be mapped even after adding the correct primary SDN label.
>>>
>>> I'm running SDN 3.0.2.RELEASE and neo4j 2.0.3 on arch linux x64 with Oracle
>>> Java 1.8.0_05
>>>
>>> Trying to retrieve nodes in SDN, imported using the Neo4j CSV Batch
>>> Importer, gives the java.lang.IllegalStateException:
>>>
>>> java.lang.IllegalStateException: No primary SDN label exists .. (i.e one
>>> with starting with _)
>>> This is after having added a new label through a cypher query:
>>>
>>> match (n:Movie) set n:_Movie;
>>> Inspecting nodes created through SDN shows they have the same labels. The
>>> result when running
>>>
>>> match (n) where id(n)={nodeId} return labels(n) as labels;
>>> as found in LabelBasedStrategyCypher.java is the same for both:
>>>
>>> ["Movie","_Movie"]
>>> Saving and retrieving nodes thorugh SDN works without any issues. I must be
>>> missing something as I got the impression that setting the appropiate
>>> labels should be enough.
>>>
>>> My CSV file looks like this. The appId is only used to assure the node is
>>> the same that we have stored earlier, as the internal nodeId is Garbage
>>> collected and new nodes could get old nodeIds after the old ones are
>>> deleted. The nodeId is used for actual lookups and for connecting
>>> relationships and so on.
>>>
>>> appId:int l:label title:string:movies year:int
>>> 1 Movie Dinosaur Planet 2003
>>> 2 Movie Isle of Man TT 2004 Review 2004
>>> I have made more tests, checking the source of
>>> LabelBasedNodeTypeRepresentationStrategy to see what is going wrong.
>>> Running the readAliasFrom() method that the Exception is thrown from does
>>> not return any errors:
>>>
>>> String query = "start n=node({id}) return n";
>>> Node node = null;
>>> for(Node n : neo4jTemplate.query(query,params).to(Node.class)){
>>> node = n;
>>> }
>>>
>>> // when running the readAliasFrom method manually the label is returned
>>> correctly
>>> LabelBasedNodeTypeRepresentationStrategy strategy = new
>>>
>>> LabelBasedNodeTypeRepresentationStrategy(neo4jTemplate.getGraphDatabase());
>>> System.out.println("strategy returns: "
>>> +(String)strategy.readAliasFrom(node));
>>>
>>> // trying to convert the node to a movie object, however throws the Illegal
>>> State Exception
>>> Movie movie = null;
>>> movie = neo4jTemplate.convert(node,Movie.class);
>>> So, the _Movie label exists, running the readAliasFrom() method manually
>>> doesn't throw Exceptions but trying to convert the node into a Movie does.
>>> Nodes created from SDN do not have these issues, even if they look
>>> identical to me.
>>>
>>> /Manuel
>>>
>>>
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>>
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