Package com.hp.hpl.jena.sparql.syntax

Examples of com.hp.hpl.jena.sparql.syntax.ElementTriplesBlock

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    // Not recommended.
    private QueryIterator buildSyntax(QueryIterator input, Node nodeVar, String pattern, ExecutionContext execCxt)
    {
        Var var2 = createNewVar() ;
        // Triple patterns for   ?x rdfs:label ?hiddenVar
        ElementTriplesBlock elementBGP = new ElementTriplesBlock();
        Triple t = new Triple(nodeVar, RDFS.label.asNode(), var2) ;
        elementBGP.addTriple(t) ;
       
        // Regular expression for  regex(?hiddenVar, "pattern", "i")
        Expr regex = new E_Regex(new ExprVar(var2.getName()), pattern, "i") ;
       
        ElementGroup elementGroup = new ElementGroup() ;
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    }
   
    protected Element elementFromQuads(List<Quad> quads)
    {
        ElementGroup el = new ElementGroup() ;
        ElementTriplesBlock x = new ElementTriplesBlock() ;
        // Maybe empty??
        el.addElement(x) ;
        Node g = Quad.defaultGraphNodeGenerated ;
       
        for ( Quad q : quads )
        {
            if ( q.getGraph() != g )
            {
                g = q.getGraph() ;
                x = new ElementTriplesBlock() ;
                if ( g == null || g == Quad.defaultGraphNodeGenerated )
                    el.addElement(x) ;
                else
                {
                    ElementNamedGraph eng = new ElementNamedGraph(g, x) ;
                    el.addElement(eng) ;
                }
            }
            x.addTriple(q.asTriple()) ;
        }
        return el ;
    }
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    // Not recommended.
    private QueryIterator buildSyntax(QueryIterator input, Node nodeVar, String pattern, ExecutionContext execCxt)
    {
        Var var2 = createNewVar() ;
        // Triple patterns for   ?x rdfs:label ?hiddenVar
        ElementTriplesBlock elementBGP = new ElementTriplesBlock();
        Triple t = new Triple(nodeVar, RDFS.label.asNode(), var2) ;
        elementBGP.addTriple(t) ;
       
        // Regular expression for  regex(?hiddenVar, "pattern", "i")
        Expr regex = new E_Regex(new ExprVar(var2.getName()), pattern, "i") ;
       
        ElementGroup elementGroup = new ElementGroup() ;
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    }
   
    protected Element elementFromQuads(List<Quad> quads)
    {
        ElementGroup el = new ElementGroup() ;
        ElementTriplesBlock x = new ElementTriplesBlock() ;
        // Maybe empty??
        el.addElement(x) ;
        Node g = Quad.defaultGraphNodeGenerated ;
       
        for ( Quad q : quads )
        {
            if ( q.getGraph() != g )
            {
                g = q.getGraph() ;
                x = new ElementTriplesBlock() ;
                if ( g == null || g == Quad.defaultGraphNodeGenerated )
                    el.addElement(x) ;
                else
                {
                    ElementNamedGraph eng = new ElementNamedGraph(g, x) ;
                    el.addElement(eng) ;
                }
            }
            x.addTriple(q.asTriple()) ;
        }
        return el ;
    }
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    }
   
    protected Element elementFromQuads(List<Quad> quads)
    {
        ElementGroup el = new ElementGroup() ;
        ElementTriplesBlock x = new ElementTriplesBlock() ;
        // Maybe empty??
        el.addElement(x) ;
        Node g = Quad.defaultGraphNodeGenerated ;
       
        for ( Quad q : quads )
        {
            if ( q.getGraph() != g )
            {
                g = q.getGraph() ;
                x = new ElementTriplesBlock() ;
                if ( g == null || g == Quad.defaultGraphNodeGenerated )
                    el.addElement(x) ;
                else
                {
                    ElementNamedGraph eng = new ElementNamedGraph(g, x) ;
                    el.addElement(eng) ;
                }
            }
            x.addTriple(q.asTriple()) ;
        }
        return el ;
    }
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            if ( elt instanceof ElementTriplesBlock )
            {
                if ( prev2 != null )
                    throw new ARQInternalErrorException("Mixed ElementTriplesBlock and ElementPathBlock (case 1)") ;
               
                ElementTriplesBlock etb = (ElementTriplesBlock)elt ;

                if ( prev != null )
                {
                    // Previous was an ElementTriplesBlock.
                    // Merge because they were adjacent in a group
                    // in syntax, so it must have been BGP, Filter, BGP.
                    // Or someone constructed a non-serializable query.
                    prev.addAll(etb.getPattern()) ;
                    continue ;
                }
                // New BGP.
                // Copy - so that any later mergings do not change the original query.

                ElementTriplesBlock etb2 = new ElementTriplesBlock() ;
                etb2.getPattern().addAll(etb.getPattern()) ;
                prev = etb2.getPattern() ;
                groupElts.add(etb2) ;
                continue ;
            }
           
            // TIDY UP - grr this is duplication.
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    private Op compileOneInGroup(Element elt, Op current)
    {
        // Replace triple patterns by OpBGP (i.e. SPARQL translation step 1)
        if ( elt instanceof ElementTriplesBlock )
        {
            ElementTriplesBlock etb = (ElementTriplesBlock)elt ;
            Op op = compileBasicPattern(etb.getPattern()) ;
            return join(current, op) ;
        }
       
        if ( elt instanceof ElementPathBlock )
        {
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    }
   
    protected Element elementFromQuads(List<Quad> quads)
    {
        ElementGroup el = new ElementGroup() ;
        ElementTriplesBlock x = new ElementTriplesBlock() ;
        // Maybe empty??
        el.addElement(x) ;
        Node g = Quad.defaultGraphNodeGenerated ;
       
        for ( Quad q : quads )
        {
            if ( q.getGraph() != g )
            {
                g = q.getGraph() ;
                x = new ElementTriplesBlock() ;
                if ( g == null || g == Quad.defaultGraphNodeGenerated )
                    el.addElement(x) ;
                else
                {
                    ElementNamedGraph eng = new ElementNamedGraph(g, x) ;
                    el.addElement(eng) ;
                }
            }
            x.addTriple(q.asTriple()) ;
        }
        return el ;
    }
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    }
   
    protected Element elementFromQuads(List<Quad> quads)
    {
        ElementGroup el = new ElementGroup() ;
        ElementTriplesBlock x = new ElementTriplesBlock() ;
        // Maybe empty??
        el.addElement(x) ;
        Node g = Quad.defaultGraphNodeGenerated ;
       
        for ( Quad q : quads )
        {
            if ( q.getGraph() != g )
            {
                g = q.getGraph() ;
                x = new ElementTriplesBlock() ;
                if ( g == null || g == Quad.defaultGraphNodeGenerated )
                    el.addElement(x) ;
                else
                {
                    ElementNamedGraph eng = new ElementNamedGraph(g, x) ;
                    el.addElement(eng) ;
                }
            }
            x.addTriple(q.asTriple()) ;
        }
        return el ;
    }
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    }
   
    protected Element elementFromQuads(List<Quad> quads)
    {
        ElementGroup el = new ElementGroup() ;
        ElementTriplesBlock x = new ElementTriplesBlock() ;
        // Maybe empty??
        el.addElement(x) ;
        Node g = Quad.defaultGraphNodeGenerated ;
       
        for ( Quad q : quads )
        {
            if ( q.getGraph() != g )
            {
                g = q.getGraph() ;
                x = new ElementTriplesBlock() ;
                if ( g == null || g == Quad.defaultGraphNodeGenerated )
                    el.addElement(x) ;
                else
                {
                    ElementNamedGraph eng = new ElementNamedGraph(g, x) ;
                    el.addElement(eng) ;
                }
            }
            x.addTriple(q.asTriple()) ;
        }
        return el ;
    }
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