[
https://issues.apache.org/jira/browse/JENA-1419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Bruno P. Kinoshita updated JENA-1419:
-------------------------------------
Description:
In section:
[http://jena.apache.org/tutorials/sparql_datasets.html#querying-a-specific-graph]
The output is empty. As if the graph couldn't be found.
{noformat}
PREFIX : <[file:///home/jo/eclipse-workspace/sparql_tutorial_data/]>
PREFIX dc: <[http://purl.org/dc/elements/1.1/]>
SELECT *
WHERE
{ GRAPH ?g
{ ?b dc:title ?title }
}
{noformat}
Gives:
{noformat}
--------------------------------------------------------------------
|b|title|g|
====================================================================
|_:b0|"Harry Potter and the Chamber of Secrets"|<ds-ng-1.ttl>|
|_:b1|"Harry Potter and the Philospher's Stone"|<ds-ng-1.ttl>|
|_:b2|"Harry Potter and the Sorcerer's Stone"|<ds-ng-2.ttl>|
|_:b3|"Harry Potter and the Chamber of Secrets"|<ds-ng-2.ttl>|
--------------------------------------------------------------------
{noformat}
{noformat}
PREFIX dc: <[http://purl.org/dc/elements/1.1/]>
PREFIX : <.>
SELECT ?title
{
GRAPH :ds-ng-2.ttl
{ ?b dc:title ?title }
}
{noformat}
Gives
{noformat}
---------
|title|
=========
---------
{noformat}
Running with Jena 3.5.0, on Linux (Arch)
{noformat}
$ arq --graph ds-dft.ttl --namedgraph ds-ng-1.ttl --namedgraph \
ds-ng-2.ttl --query q-ds-3.rq
{noformat}
There is also a problem with q-ds-4.rq:
{noformat}
----------------
|date|title|
================
----------------
{noformat}
And same with q-ds-5.rq.
{noformat}
---------------------------------------------------------------------------------------
|s|p|o|g|
=======================================================================================
|:ds-ng-1.ttl|dc:date|"2005-07-14T03:18:56+01:00"^^xsd:dateTime| |
|:ds-ng-2.ttl|dc:date|"2005-09-22T05:53:05+01:00"^^xsd:dateTime| |
|_:b0|dc:title|"Harry Potter and the Chamber of Secrets"|<ds-ng-1.ttl>|
|_:b1|dc:title|"Harry Potter and the Philospher's Stone"|<ds-ng-1.ttl>|
|_:b2|dc:title|"Harry Potter and the Sorcerer's Stone"|<ds-ng-2.ttl>|
|_:b3|dc:title|"Harry Potter and the Chamber of Secrets"|<ds-ng-2.ttl>|
---------------------------------------------------------------------------------------
{noformat}
We see that g and s are not in the same format.
Looking around, I found that:
[https://github.com/apache/jena/blob/master/jena-arq/etc/dataset.ttl]
And made a dataset such as:
{noformat}
@prefix dc: <[http://purl.org/dc/elements/1.1/]> .
@prefix rdfs:
<[http://www.w3.org/2000/01/rdf-schema#|http://www.w3.org/2000/01/rdf-schema]> .
@prefix rdf:
<[http://www.w3.org/1999/02/22-rdf-syntax-ns#|http://www.w3.org/1999/02/22-rdf-syntax-ns]>
.
@prefix xsd:
<[http://www.w3.org/2001/XMLSchema#|http://www.w3.org/2001/XMLSchema]> .
@prefix ja:
<[http://jena.hpl.hp.com/2005/11/Assembler#|http://jena.hpl.hp.com/2005/11/Assembler]>
.
@prefix : <#> .
<> rdf:type ja:RDFDataset ;
ja:defaultGraph
[ rdf:type ja:MemoryModel] ;
ja:namedGraph [ ja:graphName <[http://example/graph1]> ;
ja:graph :data1 ] ;
ja:namedGraph [ ja:graphName <[http://example/graph2]> ;
ja:graph :data2 ] ;
.
:data1 rdf:type ja:MemoryModel ;
ja:content [ja:externalContent <ds-ng-1.ttl> ;
dc:date "2005-07-14T03:18:56+01:00"^^xsd:dateTime] ;
.
:data2 rdf:type ja:MemoryModel ;
ja:content [ja:externalContent <ds-ng-2.ttl> ;
dc:date "2005-09-22T05:53:05+01:00"^^xsd:dateTime] ;
.
{noformat}
Using that I was able to query them, but still not by date. There
doesn't seem to be a default graph anymore.
was:
In section:
http://jena.apache.org/tutorials/sparql_datasets.html#querying-a-specific-graph
The output is empty. As if the graph couldn't be found.
PREFIX : <file:///home/jo/eclipse-workspace/sparql_tutorial_data/>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
SELECT *
WHERE
{ GRAPH ?g
{ ?b dc:title ?title }
}
Gives:
--------------------------------------------------------------------
| b | title | g |
====================================================================
| _:b0 | "Harry Potter and the Chamber of Secrets" | <ds-ng-1.ttl> |
| _:b1 | "Harry Potter and the Philospher's Stone" | <ds-ng-1.ttl> |
| _:b2 | "Harry Potter and the Sorcerer's Stone" | <ds-ng-2.ttl> |
| _:b3 | "Harry Potter and the Chamber of Secrets" | <ds-ng-2.ttl> |
--------------------------------------------------------------------
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX : <.>
SELECT ?title
{
GRAPH :ds-ng-2.ttl
{ ?b dc:title ?title }
}
Gives
---------
| title |
=========
---------
Running with Jena 3.5.0, on Linux (Arch)
$ arq --graph ds-dft.ttl --namedgraph ds-ng-1.ttl --namedgraph \
ds-ng-2.ttl --query q-ds-3.rq
There is also a problem with q-ds-4.rq:
----------------
| date | title |
================
----------------
And same with q-ds-5.rq.
---------------------------------------------------------------------------------------
| s | p | o | g
|
=======================================================================================
| :ds-ng-1.ttl | dc:date | "2005-07-14T03:18:56+01:00"^^xsd:dateTime |
|
| :ds-ng-2.ttl | dc:date | "2005-09-22T05:53:05+01:00"^^xsd:dateTime |
|
| _:b0 | dc:title | "Harry Potter and the Chamber of Secrets" |
<ds-ng-1.ttl> |
| _:b1 | dc:title | "Harry Potter and the Philospher's Stone" |
<ds-ng-1.ttl> |
| _:b2 | dc:title | "Harry Potter and the Sorcerer's Stone" |
<ds-ng-2.ttl> |
| _:b3 | dc:title | "Harry Potter and the Chamber of Secrets" |
<ds-ng-2.ttl> |
---------------------------------------------------------------------------------------
We see that g and s are not in the same format.
Looking around, I found that:
https://github.com/apache/jena/blob/master/jena-arq/etc/dataset.ttl
And made a dataset such as:
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> .
@prefix : <#> .
<> rdf:type ja:RDFDataset ;
ja:defaultGraph
[ rdf:type ja:MemoryModel] ;
ja:namedGraph [ ja:graphName <http://example/graph1> ;
ja:graph :data1 ] ;
ja:namedGraph [ ja:graphName <http://example/graph2> ;
ja:graph :data2 ] ;
.
:data1 rdf:type ja:MemoryModel ;
ja:content [ja:externalContent <ds-ng-1.ttl> ;
dc:date "2005-07-14T03:18:56+01:00"^^xsd:dateTime] ;
.
:data2 rdf:type ja:MemoryModel ;
ja:content [ja:externalContent <ds-ng-2.ttl> ;
dc:date "2005-09-22T05:53:05+01:00"^^xsd:dateTime] ;
.
Using that I was able to query them, but still not by date. There
doesn't seem to be a default graph anymore.
> Documentation issue on the SPARQL datasets
> ------------------------------------------
>
> Key: JENA-1419
> URL: https://issues.apache.org/jira/browse/JENA-1419
> Project: Apache Jena
> Issue Type: Documentation
> Components: ARQ, Documentation
> Affects Versions: Jena 3.5.0
> Environment: ArchLinux
> Reporter: Jonathan Bisson
> Priority: Critical
>
> In section:
>
> [http://jena.apache.org/tutorials/sparql_datasets.html#querying-a-specific-graph]
> The output is empty. As if the graph couldn't be found.
> {noformat}
> PREFIX : <[file:///home/jo/eclipse-workspace/sparql_tutorial_data/]>
> PREFIX dc: <[http://purl.org/dc/elements/1.1/]>
> SELECT *
> WHERE
> { GRAPH ?g
> { ?b dc:title ?title }
> }
> {noformat}
> Gives:
> {noformat}
> --------------------------------------------------------------------
> |b|title|g|
> ====================================================================
> |_:b0|"Harry Potter and the Chamber of Secrets"|<ds-ng-1.ttl>|
> |_:b1|"Harry Potter and the Philospher's Stone"|<ds-ng-1.ttl>|
> |_:b2|"Harry Potter and the Sorcerer's Stone"|<ds-ng-2.ttl>|
> |_:b3|"Harry Potter and the Chamber of Secrets"|<ds-ng-2.ttl>|
> --------------------------------------------------------------------
> {noformat}
> {noformat}
> PREFIX dc: <[http://purl.org/dc/elements/1.1/]>
> PREFIX : <.>
> SELECT ?title
> {
> GRAPH :ds-ng-2.ttl
> { ?b dc:title ?title }
> }
> {noformat}
> Gives
> {noformat}
> ---------
> |title|
> =========
> ---------
> {noformat}
> Running with Jena 3.5.0, on Linux (Arch)
> {noformat}
> $ arq --graph ds-dft.ttl --namedgraph ds-ng-1.ttl --namedgraph \
> ds-ng-2.ttl --query q-ds-3.rq
> {noformat}
> There is also a problem with q-ds-4.rq:
> {noformat}
> ----------------
> |date|title|
> ================
> ----------------
> {noformat}
> And same with q-ds-5.rq.
> {noformat}
> ---------------------------------------------------------------------------------------
> |s|p|o|g|
> =======================================================================================
> |:ds-ng-1.ttl|dc:date|"2005-07-14T03:18:56+01:00"^^xsd:dateTime| |
> |:ds-ng-2.ttl|dc:date|"2005-09-22T05:53:05+01:00"^^xsd:dateTime| |
> |_:b0|dc:title|"Harry Potter and the Chamber of Secrets"|<ds-ng-1.ttl>|
> |_:b1|dc:title|"Harry Potter and the Philospher's Stone"|<ds-ng-1.ttl>|
> |_:b2|dc:title|"Harry Potter and the Sorcerer's Stone"|<ds-ng-2.ttl>|
> |_:b3|dc:title|"Harry Potter and the Chamber of Secrets"|<ds-ng-2.ttl>|
> ---------------------------------------------------------------------------------------
> {noformat}
> We see that g and s are not in the same format.
> Looking around, I found that:
> [https://github.com/apache/jena/blob/master/jena-arq/etc/dataset.ttl]
> And made a dataset such as:
> {noformat}
> @prefix dc: <[http://purl.org/dc/elements/1.1/]> .
> @prefix rdfs:
> <[http://www.w3.org/2000/01/rdf-schema#|http://www.w3.org/2000/01/rdf-schema]>
> .
> @prefix rdf:
> <[http://www.w3.org/1999/02/22-rdf-syntax-ns#|http://www.w3.org/1999/02/22-rdf-syntax-ns]>
> .
> @prefix xsd:
> <[http://www.w3.org/2001/XMLSchema#|http://www.w3.org/2001/XMLSchema]> .
> @prefix ja:
> <[http://jena.hpl.hp.com/2005/11/Assembler#|http://jena.hpl.hp.com/2005/11/Assembler]>
> .
> @prefix : <#> .
> <> rdf:type ja:RDFDataset ;
> ja:defaultGraph
> [ rdf:type ja:MemoryModel] ;
> ja:namedGraph [ ja:graphName <[http://example/graph1]> ;
> ja:graph :data1 ] ;
> ja:namedGraph [ ja:graphName <[http://example/graph2]> ;
> ja:graph :data2 ] ;
> .
> :data1 rdf:type ja:MemoryModel ;
> ja:content [ja:externalContent <ds-ng-1.ttl> ;
> dc:date "2005-07-14T03:18:56+01:00"^^xsd:dateTime] ;
> .
> :data2 rdf:type ja:MemoryModel ;
> ja:content [ja:externalContent <ds-ng-2.ttl> ;
> dc:date "2005-09-22T05:53:05+01:00"^^xsd:dateTime] ;
> .
> {noformat}
> Using that I was able to query them, but still not by date. There
> doesn't seem to be a default graph anymore.
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