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

Examples of com.hp.hpl.jena.sparql.expr.NodeValue.asNode()

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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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        try {
            NodeValue nv = expr.eval(binding, funcEnv) ;
            if ( nv == null )
                return null ;
            return nv.asNode() ;
        } catch (ExprEvalException ex)
        //{ Log.warn(this, "Eval failure "+expr+": "+ex.getMessage()) ; }
        { }
        return null ;
    }
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                    for ( Pair<Var, Accumulator> pair : accs )
                    {
                        Var v = pair.getLeft() ;
                        NodeValue value = pair.getRight().getValue() ;
                        Node n = (value==null) ? null : value.asNode() ;
                        if ( v == null || n == null )
                        {}
                        else
                            b.add(v, n) ;
                    }
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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, NodeFactory.nodeToInt(result.asNode()));
       
        //Change the definition of the function we depend on
        square = new ExprVar("x");
        UserDefinedFunctionFactory.getFactory().add("http://example/square", square, new ArrayList<Var>(square.getVarsMentioned()));
        f.build("http://example/cube", new ExprList(new NodeValueInteger(2)));
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        UserDefinedFunctionFactory.getFactory().add("http://example/square", square, new ArrayList<Var>(square.getVarsMentioned()));
        f.build("http://example/cube", new ExprList(new NodeValueInteger(2)));
       
        actual = f.getActualExpr();
        result = actual.eval(BindingFactory.create(), FunctionEnvBase.createTest());
        Assert.assertEquals(4, NodeFactory.nodeToInt(result.asNode()));
    }
}
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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, NodeFactory.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");
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        UserDefinedFunctionFactory.getFactory().add("http://example/square", square, new ArrayList<Var>(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, NodeFactory.nodeToInt(result.asNode()));
    }
   
    @Test(expected=ExprBuildException.class)
    public void test_function_expansion_bad_01() {
        List<Var> args = new ArrayList<Var>();
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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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                        // 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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                    for ( Pair<Var, Accumulator> pair : accs )
                    {
                        Var v = pair.getLeft() ;
                        NodeValue value = pair.getRight().getValue() ;
                        Node n = (value==null) ? null : value.asNode() ;
                        if ( v == null || n == null )
                        {}
                        else
                            b.add(v, n) ;
                    }
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