Re: [Bigdata-developers] Problems with RDR

[Brad B. <be...@sy...>]

Max,

There were two issues, which are below.  Thank you for pointing out the
Wiki issue.  It's been updated and corrected:
http://wiki.blazegraph.com/wiki/index.php/Reification_Done_Right#Reification_Done_Right
.  Let us know how it works for you.

Thanks, --Brad

1.  The dublin core name space needed to be declared:

@prefix : <http://bigdata.com> .
@prefix foaf: <http://xmlns.com/foaf/0.1/>
@prefix dct:  <http://purl.org/dc/elements/1.1/> .

:bob foaf:name "Bob" .
<<:bob foaf:age 23>> dct:creator <http://example.com/crawlers#c1> ;
                     dct:source <http://example.net/homepage-listing.html> .

2.  The RDR content-type needed to be specified in the CURL request.

curl -D -H 'Content-Type: application/x-turtle-RDR' --upload-file bob.tut
-X POST '
http://localhost:9999/bigdata/namespace/test/sparql/test/sparql?context-uri=http://example.org/tbox
'



On Wed, Apr 15, 2015 at 10:04 AM, Bryan Thompson <br...@sy...> wrote:

> The RDR specific mime types are also defined here:
> http://wiki.blazegraph.com/wiki/index.php/Reification_Done_Right#RDF_Data_Interchange
>
> Thanks,
> Bryan
>
> ----
> Bryan Thompson
> Chief Scientist & Founder
> SYSTAP, LLC
> 4501 Tower Road
> Greensboro, NC 27410
> br...@sy...
> http://blazegraph.com
> http://blog.bigdata.com <http://bigdata.com>
> http://mapgraph.io
>
> Blazegraph™ <http://www.blazegraph.com/> is our ultra high-performance
> graph database that supports both RDF/SPARQL and Tinkerpop/Blueprints
> APIs.  MapGraph™ <http://www.systap.com/mapgraph> is our disruptive new
> technology to use GPUs to accelerate data-parallel graph analytics.
>
> CONFIDENTIALITY NOTICE:  This email and its contents and attachments are
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> On Wed, Apr 15, 2015 at 10:03 AM, Bryan Thompson <br...@sy...> wrote:
>
>> Max,
>>
>> I've fixed the wiki.
>>
>> The problem is the Content-Type header.  I have modified the servlet to
>> report back the Content-Type header in the error message.
>>
>> You are probably specifying Content-Type=application/x-turtle. When I
>> use this value I get the same error message.
>>
>> You need to specify *application/x-turtle-RDR* per
>> http://wiki.blazegraph.com/wiki/index.php/NanoSparqlServer#MIME_Types
>>
>> Thanks,
>> Bryan
>> ----
>> Bryan Thompson
>> Chief Scientist & Founder
>> SYSTAP, LLC
>> 4501 Tower Road
>> Greensboro, NC 27410
>> br...@sy...
>> http://blazegraph.com
>> http://blog.bigdata.com <http://bigdata.com>
>> http://mapgraph.io
>>
>> Blazegraph™ <http://www.blazegraph.com/> is our ultra high-performance
>> graph database that supports both RDF/SPARQL and Tinkerpop/Blueprints
>> APIs.  MapGraph™ <http://www.systap.com/mapgraph> is our disruptive new
>> technology to use GPUs to accelerate data-parallel graph analytics.
>>
>> CONFIDENTIALITY NOTICE:  This email and its contents and attachments are
>> for the sole use of the intended recipient(s) and are confidential or
>> proprietary to SYSTAP. Any unauthorized review, use, disclosure,
>> dissemination or copying of this email or its contents or attachments is
>> prohibited. If you have received this communication in error, please notify
>> the sender by reply email and permanently delete all copies of the email
>> and its contents and attachments.
>>
>> On Tue, Apr 14, 2015 at 10:00 PM, Max Ott <ma...@ni...> wrote:
>>
>>> Hi,
>>>
>>> I have trying to get the RDR extension working as this is the feature
>>> I'm most interested in. So I copied a simple statement from the web site
>>> into a file called 'bob.tut'
>>>
>>> @prefix : <http://bigdata.com> .
>>> @prefix foaf: <http://xmlns.com/foaf/0.1/> .
>>>
>>> :bob foaf:name "Bob" .
>>> <<:bob foaf:age 23>> dct:creator <http://example.com/crawlers#c1> ;
>>>                      dct:source <
>>> http://example.net/homepage-listing.html> .
>>>
>>> (BTW, the trailing dot on line 2 and ‘;’ on line 5 is missing in the
>>> wiki writeup).
>>>
>>> I then created a namespace “test” with RDR selected which gave me the
>>> following service description:
>>>
>>> ….
>>> <endpoint xmlns="http://www.w3.org/ns/sparql-service-description#"
>>> rdf:resource="http://localhost:9999/bigdata/namespace/test/sparql”/>
>>> …
>>>         <feature xmlns="http://www.w3.org/ns/sparql-service-description#"
>>> rdf:resource="http://www.bigdata.com/rdf#/features/KB/Mode/Sids"/>
>>>         <feature xmlns="http://www.w3.org/ns/sparql-service-description#"
>>> rdf:resource="http://www.bigdata.com/rdf#/features/KB/TruthMaintenance
>>> "/>
>>>
>>> If I now try to upload ‘bob’, I get the following error:
>>>
>>> $ curl -D- -H 'Content-Type: text/turtle' --upload-file bob.tut -X POST '
>>> http://localhost:9999/bigdata/namespace/test/sparql/test/sparql?context-uri=http://example.org/tbox'
>>>
>>> HTTP/1.1 100 Continue
>>>
>>> HTTP/1.1 500 Server Error
>>> Content-Type: text/plain
>>> Transfer-Encoding: chunked
>>> Server: Jetty(9.2.3.v20140905)
>>>
>>> INSERT-WITH-BODY: baseURI=
>>> http://192.168.59.3:9999/bigdata/namespace/test/sparql, context-uri=[
>>> http://example.org/tbox]
>>> java.util.concurrent.ExecutionException:
>>> org.openrdf.rio.RDFParseException: IRI included an unencoded space: '32'
>>> [line 5]
>>> ….
>>>
>>> Looks like the RDF parser didn’t get the memo that I’m sending RDR data,
>>> but I have no idea what I’m doing wrong, nor apparently what I'm doing -
>>> period :)
>>>
>>> Any help would be greatly appreciated.
>>>
>>> Cheers,
>>> -max
>>>
>>>
>>>
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>>
>
>
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> Develop your own process in accordance with the BPMN 2 standard
> Learn Process modeling best practices with Bonita BPM through live
> exercises
> http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual-
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-- 
_______________
Brad Bebee
Managing Partner
SYSTAP, LLC
e:  be...@sy...
m: 202.642.7961
f:  571.367.5000
w:  www.systap.com

Blazegraph™ <http://www.blazegraph.com> is our ultra high-performance graph
database that supports both RDF/SPARQL and Tinkerpop/Blueprints APIs.
MapGraph™ <http://www.systap.com/mapgraph> is our disruptive new technology
to use GPUs to accelerate data-parallel graph analytics.

CONFIDENTIALITY NOTICE:  This email and its contents and attachments are
for the sole use of the intended recipient(s) and are confidential or
proprietary to SYSTAP, LLC.  Any unauthorized review, use, disclosure,
dissemination or copying of this email or its contents or attachments is
prohibited. If you have received this communication in error, please notify
the sender by reply email and permanently delete all copies of the email
and its contents and attachments.