Package com.hp.hpl.jena.sparql.core

Examples of com.hp.hpl.jena.sparql.core.BasicPattern

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    public static boolean isBGP(Op op)
    {
        return (op instanceof OpBGP ) ;
    }

    public OpBGP() { this(new BasicPattern()) ; }
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        }
       
        Triple triple = new Triple(s, p ,o) ;
       
        // Evaluate as an algebra expression
        BasicPattern pattern = new BasicPattern() ;
        pattern.add(triple) ;
        Op op = new OpBGP(pattern) ;
       
//        // Make remote execution object.
//        System.err.println("GraphSPARQLService.graphBaseFind: Unimplemented : remote service execution") ;
//        //Plan plan = factory.create(op, getDataset(), BindingRoot.create(), null) ;
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    public OpQuadPattern asQuadPattern()
    {
        if ( opQuadPattern == null )
        {
            BasicPattern bp = new BasicPattern() ;
            bp.add(getQuad().asTriple()) ;
            opQuadPattern = new OpQuadPattern(quad.getGraph(),bp) ;
        }
        return opQuadPattern ;
    }
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        private static boolean oneLine(Op op)
        {
            if ( OpBGP.isBGP(op) )
            {
                BasicPattern bgp = ((OpBGP)op).getPattern() ;
                if ( bgp.getList().size() <= 1 )
                    return true ;
            }
            return false ;
        }
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    public final OpBGP asBGP()
    {
        if ( opBGP == null )
        {
            BasicPattern bp = new BasicPattern() ;
            bp.add(getTriple()) ;
            opBGP = new OpBGP(bp) ;
        }
        return opBGP ;
    }       
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        return Tags.tagTriple ;
    }

    public boolean equivalent(OpBGP opBGP)
    {
        BasicPattern bgp = opBGP.getPattern() ;
        if ( bgp.size() != 1 ) return false ;
        Triple t = bgp.get(0) ;
        return triple.equals(t) ; 
    }
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        @Override
        public void visit(OpQuadPattern quadPattern)
        {
            slot(defines, quadPattern.getGraphNode()) ;
            BasicPattern triples = quadPattern.getBasicPattern() ;
            vars(defines, triples) ;
//            List quads = quadPattern.getQuads() ;
//            for ( Iterator iter = quads.iterator() ; iter.hasNext(); )
//            {
//                Quad quad = (Quad)iter.next() ;
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        }

        @Override
        public void visit(OpBGP opBGP)
        {
            BasicPattern triples = opBGP.getPattern() ;
            vars(defines, triples) ;
        }
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            // List ...
            List<Node> list = args.getArgList() ;
            if ( list.size() == 0 )
                return RDF.Nodes.nil ;
            BasicPattern bgp = new BasicPattern() ;
            Node head = GraphList.listToTriples(list, bgp) ;
            currentGroup().addElement(process(bgp)) ;
            return head ;
        }
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    //        DatasetGraph dg = execCxt.getDataset() ;
    //        if ( ! ( dg instanceof DatasetGraphTDB ) )
    //            throw new InternalErrorException("Not a TDB backed dataset in quad pattern execution") ;
       
        DatasetGraphTDB ds = (DatasetGraphTDB)execCxt.getDataset() ;
        BasicPattern bgp = quadPattern.getBasicPattern() ;
        Node gn = quadPattern.getGraphNode() ;
        return optimizeExecuteQuads(ds, input, gn, bgp, null, execCxt) ;
    }
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Related Classes of com.hp.hpl.jena.sparql.core.BasicPattern

  • arq.examples.AlgebraExec
  • arq.examples.propertyfunction.labelSearch
  • com.hp.hpl.jena.graph.Triple
  • com.hp.hpl.jena.sdb.graph.GraphSDB
  • com.hp.hpl.jena.sparql.algebra.AlgebraGenerator
  • com.hp.hpl.jena.sparql.algebra.op.OpBGP
  • com.hp.hpl.jena.sparql.algebra.op.OpQuad
  • com.hp.hpl.jena.sparql.algebra.op.OpQuadBlock
  • com.hp.hpl.jena.sparql.algebra.op.OpTriple
  • com.hp.hpl.jena.sparql.algebra.OpAsQuery$Converter
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