On 11/01/16 13:04, Håvard Mikkelsen Ottestad wrote:
Hi,
I've set up a config for Fuseki with tdb:unionDefaultGraph "true". This works
great for queries and allows me to separate my data into graphs for easy update and
delete operations.
However. I can't seem to get the graph protocol to work.
I can list all data in graphs with:
<http://localhost:3030/fuseki/admin/data>http://localhost:3030/fuseki/admin/get
But when I try to get the default graph (which should be the union), I get
nothing (empty, but no errors).
<http://localhost:3030/fuseki/admin/data?default>http://localhost:3030/fuseki/admin/get?default
or
http://localhost:3030/fuseki/admin/get?graph=default
Its' the former ?default.
Is there something I've done wrong in my setup?
One role for the Graph Store Protocol for data management (it's just
about GET). The default union graph applies to query, not to GSP.
GSP operations act on the concrete dataset where the default graph is
the actual storage default graph.
In other words, PUT, POST, DELETE make changes and so naming is about
the real default graph. And maybe the app wants GET to return the real
default graph.
It may work to ask for a named graph of urn:x-arq:UnionGraph which is
the name for the default union graph.
There is no reason why the couldn't be a extension where where "?union"
for GET only, is the union graph.
Andy
TTL config file:
@prefix fuseki: <http://jena.apache.org/fuseki#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix tdb: <http://jena.hpl.hp.com/2008/tdb#> .
@prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> .
@prefix : <#> .
<#service1> rdf:type fuseki:Service ;
fuseki:name "admin" ; # http://host:port/ds
fuseki:serviceQuery "sparql" ; # SPARQL query service
fuseki:serviceQuery "query" ; # SPARQL query service (alt
name)
fuseki:serviceUpdate "update" ; # SPARQL update service
fuseki:serviceUpload "upload" ; # Non-SPARQL upload service
fuseki:serviceReadWriteGraphStore "data" ; # SPARQL Graph store
protocol (read and write)
# A separate read-only graph store endpoint:
fuseki:serviceReadGraphStore "get" ; # SPARQL Graph store
protocol (read only)
fuseki:dataset <#dataset> ;
.
<#dataset> rdf:type tdb:DatasetTDB ;
tdb:location "/etc/fuseki/databases/admin" ;
tdb:unionDefaultGraph true ;
.
Regards,
Håvard M. Ottestad
