Examples of com.hp.hpl.jena.sparql.engine.binding.BindingMap

Package com.hp.hpl.jena.sparql.engine.binding

Examples of com.hp.hpl.jena.sparql.engine.binding.BindingMap

com.hp.hpl.jena.sparql.engine.binding.BindingMap
Bindings are immutable, and are equal-by-value, but they have to be constructed somehow and this interface captures that. Bindings should be created, then not changed, and returned as type "Binding".

  
  private boolean parseNextBinding() {
    if (lookingAt(TokenType.LBRACE))
    {
      nextToken();
      BindingMap b = BindingFactory.create();
      do
      {
        if (isPropertyName())
        {
          Token t = nextToken();
          String var = t.getImage();
          checkColon();
                    
          Node n = parseNode();
          b.add(Var.alloc(var), n);
          
          checkComma(TokenType.RBRACE);
        }
        else if (lookingAt(TokenType.RBRACE))
        {

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    }
    
    
    private Binding copyToBinding(QuerySolution qs)
    {
        BindingMap b = BindingFactory.create() ;
        for ( Iterator<String> iter = qs.varNames() ; iter.hasNext() ; )
        {
            String varName = iter.next() ;
            RDFNode rn = qs.get(varName) ;
            b.add(Var.alloc(varName), rn.asNode()) ;
        }
        return b ;
    }

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        JsonArray array = results.get(kBindings).getAsArray() ;
        Iterator<JsonValue> iter = array.iterator() ;
        
        for ( ; iter.hasNext() ; )
        {
            BindingMap b = BindingFactory.create() ;
            JsonValue v = iter.next() ;
            if ( ! v.isObject() )
                throw new ResultSetException("Entry in 'bindings' array must be an object {}")  ;
            JsonObject x = v.getAsObject() ;
            Set<String> varNames = x.keys() ;
            for ( String vn : varNames )
            {
                //if ( ! vars.contains(vn) ) {}
                JsonValue vt = x.get(vn) ;
                if ( ! vt.isObject() )
                    throw new ResultSetException("Binding for variable '"+vn+"' is not a JSON object: "+vt)  ;
                Node n = parseOneTerm(vt.getAsObject()) ;
                b.add(Var.alloc(vn), n) ;
            }
            rows.add(b) ;
        }
    }

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        if ( true )
            return new BindingTDB(bindingNodeIds, nodeTable) ;
        else {
            // Makes nodes immediately. Causing unnecessary NodeTable accesses
            // (e.g. project)
            BindingMap b = BindingFactory.create() ;
            for (Var v : bindingNodeIds) {
                NodeId id = bindingNodeIds.get(v) ;
                Node n = nodeTable.getNodeForNodeId(id) ;
                b.add(v, n) ;
            }
            return b ;
        }
    }

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    // -------- Support functions
    
    private ResultSet make(String var, Node val)
    {
        BindingMap b = BindingFactory.create() ;
        b.add(Var.alloc(var), val) ;
        List<String> vars = new ArrayList<>() ;
        vars.add(var) ;
        QueryIterator qIter = QueryIterSingleton.create(b, null) ;
        ResultSet rs = new ResultSetStream(vars, null, qIter) ;
        return rs ;

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        return rs ;
    }


    private ResultSet make2(String var, Node val)
    {
        BindingMap b1 = BindingFactory.create() ;
        b1.add(Var.alloc(var), val) ;
        BindingMap b2 = BindingFactory.create() ;
        b2.add(Var.alloc(var), val) ;
        
        List<String> vars = new ArrayList<>() ;
        vars.add(var) ;


        List<Binding> solutions = new ArrayList<>() ;

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        return rsw ;
    }
    
    private ResultSet make(String var1, Node val1, String var2, Node val2 )
    {
        BindingMap b = BindingFactory.create() ;
        
        b.add(Var.alloc(var1), val1) ;
        b.add(Var.alloc(var2), val2) ;
        
        List<String> vars = new ArrayList<>() ;
        vars.add(var1) ;
        vars.add(var2) ;

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    {
        List<Binding> bindings = new ArrayList<>()  ;
        while(resultsActual.hasNext())
        {
            Binding b = resultsActual.nextBinding() ;
            BindingMap b2 = BindingFactory.create() ;
            
            for ( String vn : resultsActual.getResultVars() )
            {
                Var v = Var.alloc(vn) ;
                Node n = b.get(v) ;
                String s ;
                if ( n == null )
                    s = "" ;
                else if ( n.isBlank() )
                    s = "_:"+n.getBlankNodeLabel() ;
                else
                    s = NodeFunctions.str(n) ;
                b2.add(v, NodeFactory.createLiteral(s)) ;
            }
            bindings.add(b2) ;
        }
        ResultSet rs = new ResultSetStream(resultsActual.getResultVars(), null, new QueryIterPlainWrapper(bindings.iterator())) ;
        return ResultSetFactory.makeRewindable(rs) ;

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        return BuilderBinding.build(item) ;
    }
    
    private Binding randomBinding(Var[] vars)
    {
        BindingMap binding = BindingFactory.create();
        binding.add(vars[0], NodeFactory.createAnon());
        binding.add(vars[1], NodeFactory.createURI(randomURI()));
        binding.add(vars[2], NodeFactory.createURI(randomURI()));
        binding.add(vars[3], NodeFactory.createLiteral(randomString(20)));
        binding.add(vars[4], NodeFactory.createAnon());
        binding.add(vars[5], NodeFactory.createURI(randomURI()));
        binding.add(vars[6], NodeFactory.createURI(randomURI()));
        binding.add(vars[7], NodeFactory.createLiteral(randomString(5)));
        binding.add(vars[8], NodeFactory.createLiteral("" + random.nextInt(), null, XSDDatatype.XSDinteger));
        binding.add(vars[9], NodeFactory.createAnon());
        return binding;
    }

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        return BuilderBinding.build(item) ;
    }
    
    private Binding randomBinding(Var[] vars)
    {
        BindingMap binding = BindingFactory.create();
        binding.add(vars[0], NodeFactory.createAnon());
        binding.add(vars[1], NodeFactory.createURI(randomURI()));
        binding.add(vars[2], NodeFactory.createURI(randomURI()));
        binding.add(vars[3], NodeFactory.createLiteral(randomString(20)));
        binding.add(vars[4], NodeFactory.createAnon());
        binding.add(vars[5], NodeFactory.createURI(randomURI()));
        binding.add(vars[6], NodeFactory.createURI(randomURI()));
        binding.add(vars[7], NodeFactory.createLiteral(randomString(5)));
        binding.add(vars[8], NodeFactory.createLiteral("" + random.nextInt(), null, XSDDatatype.XSDinteger));
        binding.add(vars[9], NodeFactory.createAnon());
        return binding;
    }

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