Package com.hp.hpl.jena.sparql.expr

Examples of com.hp.hpl.jena.sparql.expr.NodeValue

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        UserDefinedFunction f = (UserDefinedFunction) UserDefinedFunctionFactory.getFactory().create("http://example/cube");
        f.build("http://example/cube", new ExprList(new NodeValueInteger(2)));
       
        Expr actual = f.getActualExpr();
        NodeValue result = actual.eval(BindingFactory.create(), FunctionEnvBase.createTest());
        Assert.assertEquals(8, NodeFactoryExtra.nodeToInt(result.asNode()));
       
        //Change the definition of the function we depend on
        //This has no effect with preserveDependencies set to false (the default) since we fully expanded the call to the dependent
        //function when our outer function was defined
        square = new ExprVar("x");
        UserDefinedFunctionFactory.getFactory().add("http://example/square", square, new ArrayList<>(square.getVarsMentioned()));
        f.build("http://example/cube", new ExprList(new NodeValueInteger(2)));
       
        actual = f.getActualExpr();
        result = actual.eval(BindingFactory.create(), FunctionEnvBase.createTest());
        Assert.assertEquals(8, NodeFactoryExtra.nodeToInt(result.asNode()));
    }
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            if ( ! first )
                s.append(sep) ;
            // Values are printed withquoting.
            if ( ex instanceof NodeValue )
            {
                NodeValue nv =(NodeValue)ex ;
                s.append(nv.asQuotedString()) ;
            }
            else
                s.append(ex.toString()) ;
            first = false ;
        }
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    }

    public static NodeValue parseNodeValue(String s)
    {
        Node n = NodeFactoryExtra.parseNode(s) ;
        NodeValue nv = NodeValue.makeNode(n) ;
        return nv ;
    }
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    }

    public static void evalPrint(Expr expr, Binding binding)
    {
        try {
            NodeValue r = eval(expr, binding) ;
            //System.out.println(r.asQuotedString()) ;
            Node n = r.asNode() ;
            String s = FmtUtils.stringForNode(n) ;
            System.out.println(s) ;
        } catch (ExprEvalException ex)
        {
            System.out.println("Exception: "+ex.getMessage()) ;
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    public static NodeValue eval(Expr expr, Binding binding)
    {
        Context context = ARQ.getContext().copy() ;
        context.set(ARQConstants.sysCurrentTime, NodeFactoryExtra.nowAsDateTime()) ;
        FunctionEnv env = new ExecutionContext(context, null, null, null) ;
        NodeValue r = expr.eval(binding, env) ;
        return r ;
    }
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            if ( sc.expression == null )
            {
                throw new QueryExecException( "Broken sort condition" );
            }

            NodeValue nv1 = null;
            NodeValue nv2 = null;

            try
            {
                nv1 = sc.expression.eval( bind1, env );
            }
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            BuilderLib.broken(item, "Not an integer: "+item) ;
        Node node = item.getNode() ;
        if ( ! node.isLiteral() )
            BuilderLib.broken(item, "Not an integer: "+item) ;

        NodeValue nv = NodeValue.makeNode(node) ;
        if ( ! nv.isInteger() )
            BuilderLib.broken(item, "Not an integer: "+item) ;
        return nv.getInteger() ;
    }
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    Expression e1 = expression.pop();
   
    if (e1 instanceof ConstantEx && e2 instanceof ConstantEx) {
      ConstantEx lang1 = (ConstantEx) e1;
      ConstantEx lang2 = (ConstantEx) e2;
      NodeValue nv1 = NodeValue.makeString(lang1.getNode().getLiteral().getLexicalForm());
      NodeValue nv2 = NodeValue.makeString(lang2.getNode().getLiteral().getLexicalForm());
      NodeValue match = NodeFunctions.langMatches(nv1, nv2);
      expression.push(match.equals(NodeValue.TRUE) ? Expression.TRUE : Expression.FALSE);
    } else {
      expression.push(Expression.FALSE);
    }
  }
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                    else
                    {
                        // Default action
                        ARQ.getContext().set(ARQConstants.sysCurrentTime, NodeFactory.nowAsDateTime()) ;
                        FunctionEnv env = new ExecutionContext(ARQ.getContext(), null, null, null) ;
                        NodeValue r = expr.eval(null, env) ;
                        //System.out.println(r.asQuotedString()) ;
                        Node n = r.asNode() ;
                        String s = FmtUtils.stringForNode(n) ;
                        System.out.println(s) ;
                    }
                } catch (ExprEvalException ex)
                {
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                else
                    evalArgs.add(e) ;
            }
            else
            {
                NodeValue x = e.eval(binding, execCxt) ;
                evalArgs.add(x) ;
            }
        }
        return execEval(binding, evalArgs, execCxt) ;
    }
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Related Classes of com.hp.hpl.jena.sparql.expr.NodeValue

  • arq.qexpr
  • com.hp.hpl.jena.datatypes.RDFDatatype
  • com.hp.hpl.jena.datatypes.xsd.XSDDateTime
  • com.hp.hpl.jena.datatypes.xsd.XSDDuration
  • com.hp.hpl.jena.graph.impl.LiteralLabel
  • com.hp.hpl.jena.graph.Node
  • com.hp.hpl.jena.sparql.algebra.optimize.TransformFilterEquality
  • com.hp.hpl.jena.sparql.core.assembler.DatasetNullAssembler
  • com.hp.hpl.jena.sparql.core.VarExprList
  • com.hp.hpl.jena.sparql.engine.binding.BindingComparator
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