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https://issues.apache.org/jira/browse/JENA-491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14636637#comment-14636637
]
ASF GitHub Bot commented on JENA-491:
-------------------------------------
Github user afs commented on a diff in the pull request:
https://github.com/apache/jena/pull/89#discussion_r35198181
--- Diff:
jena-arq/src/main/java/org/apache/jena/sparql/syntax/Template.java ---
@@ -52,14 +63,43 @@ public Template(BasicPattern bgp)
// public void addTriplePath(int index, TriplePath path)
// { throw new ARQException("Triples-only collector") ; }
-
- public BasicPattern getBGP() { return bgp ; }
- public List<Triple> getTriples() { return bgp.getList() ; }
+ public BasicPattern getBGP()
+ {
+ if (this.bgp != null){
+ return this.bgp;
+ }
+ BasicPattern bgp = new BasicPattern();
+ for(Quad q: qp.getQuads()){
+ bgp.add(q.asTriple());
+ }
+ return bgp;
+ }
+ public List<Triple> getTriples()
+ {
+ if(this.bgp != null){
+ return this.bgp.getList();
+ }
+ List<Triple> triples = new ArrayList<Triple>();
+ for(Quad q: qp.getQuads()){
+ triples.add(q.asTriple());
+ }
+ return triples;
+ }
+ public List<Quad> getQuads() {
+ if( this.bgp != null){
+ List<Quad> quads = new ArrayList<Quad>();
+ for(Triple triple: this.bgp.getList()){
+ quads.add( new Quad(
Quad.defaultGraphNodeGenerated, triple ) );
--- End diff --
Jena is now requiring Java8 -- this can be with streams.
> Extend CONSTRUCT to build quads
> -------------------------------
>
> Key: JENA-491
> URL: https://issues.apache.org/jira/browse/JENA-491
> Project: Apache Jena
> Issue Type: Improvement
> Components: ARQ, Fuseki
> Reporter: Andy Seaborne
> Labels: gsoc, gsoc2015, java, linked_data, rdf, sparql
>
> This would be an extension to SPARQL.
> 1/ Add use of GRAPH inside a CONSTRUCT template see SPARQL Update.
> 2/ Add conneg for quads to Fuseki.
> 3/ New QueryExecution operations execConstructQuads() and
> execConstructDataset()
> If asked for triples, and the CONSTRUCT generates quads, the named graph
> items are dropped - that is, only the default graph is returned. This is for
> commonality with RIOT.
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