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

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

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        // Step 3 : Make the operation expression.
        //   For each property function, insert the implementation
        //   For each block of non-property function triples, make a BGP.
       
        Op op = null;
        BasicPattern pattern = null ;
        for ( Triple t : triples )
        {
            if ( pfInvocations.containsKey(t) )
            {
                op = flush(pattern, op) ;
                pattern = null ;
                PropertyFunctionInstance pfi = pfInvocations.get(t) ;
                OpPropFunc opPF =  new OpPropFunc(t.getPredicate(), pfi.getSubjectArgList(), pfi.getObjectArgList(), op) ;
                op = opPF ;
                continue ;
            }      
               
            // Regular triples - make sure there is a basic pattern in progress.
            if ( pattern == null )
                pattern = new BasicPattern() ;
            pattern.add(t) ;
        }
        op = flush(pattern, op) ;
        return op ;
    }
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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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    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) ;
        Plan plan = factory.create(op, getDataset(), BindingRoot.create(), null) ;
       
        QueryIterator qIter = plan.iterator() ;
        //List<Triple> triples = new ArrayList<Triple>() ;
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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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        {
            // One expansion for each triple pattern.
            Op union = null ;
            for ( Node n : graphs )
            {
                BasicPattern bp = new BasicPattern() ;
                bp.add(t) ;
                Op pattern = new OpQuadPattern(n, bp) ;
                union = OpUnion.create(union, pattern) ;
            }
            opSeq.add(union) ;
        }
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        String pattern = args[0] ;
        String statsFile = args[1] ;
       
        Op op = SSE.readOp(pattern) ;

        BasicPattern bgp ;
        if ( op instanceof OpQuadPattern ) {
            bgp = ((OpQuadPattern)op).getBasicPattern() ;
        } else if ( op instanceof OpBGP ) {
            bgp = ((OpBGP)op).getPattern() ;
        }
        else {
            System.err.println("Not a quad or triple pattern") ;
            System.exit(2) ;
            bgp = null ;
        }
       
        ReorderTransformation reorder = chooseReorder(statsFile) ;
        //ReorderTransformation reorder = ReorderLib.fixed() ;
        BasicPattern bgp2 = reorder.reorder(bgp) ;
    
        System.out.println() ;
       
        print(bgp) ;
        System.out.println() ;
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        final Node o = (m.getMatchObject()==null)    ? Var.alloc("o")   :  m.getMatchObject() ;

        Triple triple = new Triple(s, p ,o) ;
       
        // Evaluate as an algebra expression
        BasicPattern pattern = new BasicPattern() ;
        pattern.add(triple) ;
        Op op = new OpQuadPattern(graphNode, pattern) ;
        Plan plan = QueryEngineSDB.getFactory().create(op, datasetStore, BindingRoot.create(), null) ;
       
        QueryIterator qIter = plan.iterator() ;
       
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    // ---- All the cases
   
    protected QueryIterator execute(OpBGP opBGP, QueryIterator input)
    {
        BasicPattern pattern = opBGP.getPattern() ;
        return StageBuilder.execute(pattern, input, execCxt) ;
    }
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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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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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