Examples of ExprVar

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

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        // ---- Build expression
        bp.add(new Triple(var_x, NodeFactory.createURI(BASE+"p"), var_z)) ;
        Op op = new OpBGP(bp) ;
        //Expr expr = ExprUtils.parse("?z < 2 ") ;
        Expr expr = new E_LessThan(new ExprVar(var_z), NodeValue.makeNodeInteger(2)) ;
        op = OpFilter.filter(expr, op) ;

        // ---- Example setup
        Model m = makeModel() ;
        m.write(System.out, "TTL") ;
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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        Triple t1 = new Triple(varX, DC.title.asNode(),  varTitle) ;
        elg.addTriplePattern(t1) ;
       
        // Adds a filter.  Need to wrap variable in a NodeVar.
        Expr expr = new E_Regex(new ExprVar(varTitle), "sparql", "i") ;
        ElementFilter filter = new  ElementFilter(expr) ;
        elg.addElementFilter(filter) ;
       
        // Attach the group to query. 
        query.setQueryPattern(elg) ;
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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    }
   
    public void addOrderBy(String varName, int direction)
    {
        varName = Var.canonical(varName) ;
        SortCondition sc = new SortCondition(new ExprVar(varName), direction) ;
        addOrderBy(sc) ;
    }
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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{
    public Expr expression = null ;
    public int direction = 0 ;

    public SortCondition(Var var, int dir)
    { this(new ExprVar(var),dir) ; }
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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{
    public static Expr nodeToExpr(Node n)
    {
        if ( n.isVariable() )
            return new ExprVar(n) ;
        return NodeValue.makeNode(n) ;
    }
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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    }
   
    public void addOrderBy(String varName, int direction)
    {
        varName = Var.canonical(varName) ;
        SortCondition sc = new SortCondition(new ExprVar(varName), direction) ;
        addOrderBy(sc) ;
    }
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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    private void testSorting(int numBindings, int threshold)
    {
        List<Binding> unsorted = randomBindings(numBindings);
       
        List<SortCondition> conditions = new ArrayList<SortCondition>();
        conditions.add(new SortCondition(new ExprVar("8"), Query.ORDER_ASCENDING));
        conditions.add(new SortCondition(new ExprVar("1"), Query.ORDER_ASCENDING));
        conditions.add(new SortCondition(new ExprVar("0"), Query.ORDER_DESCENDING));
        BindingComparator comparator = new BindingComparator(conditions);

        List<Binding> sorted = new ArrayList<Binding>();
       
        SortedDataBag<Binding> db = new SortedDataBag<Binding>(
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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    @Test public void testTemporaryFilesAreCleanedUpAfterCompletion()
    {
        List<Binding> unsorted = randomBindings(500);
       
        List<SortCondition> conditions = new ArrayList<SortCondition>();
        conditions.add(new SortCondition(new ExprVar("8"), Query.ORDER_ASCENDING));
        BindingComparator comparator = new BindingComparator(conditions);
       
        SortedDataBag<Binding> db = new SortedDataBag<Binding>(
                new ThresholdPolicyCount<Binding>(10),
                SerializationFactoryFinder.bindingSerializationFactory(),
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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        UserDefinedFunctionFactory.getFactory().setPreserveDependencies(false);
    }
   
    @Test
    public void test_function_non_expansion_01() {
        Expr square = new E_Multiply(new ExprVar("x"), new ExprVar("x"));
        UserDefinedFunctionFactory.getFactory().add("http://example/square", square, new ArrayList<Var>(square.getVarsMentioned()));
       
        //Test that with preserveDependencies set to true that the definition of cube is not expanded
        Expr cube = new E_Multiply(new E_Function("http://example/square", new ExprList(new ExprVar("x"))), new ExprVar("x"));
        UserDefinedFunctionFactory.getFactory().add("http://example/cube", cube, new ArrayList<Var>(cube.getVarsMentioned()));
       
        UserDefinedFunctionDefinition def = UserDefinedFunctionFactory.getFactory().get("http://example/cube");
        Expr base = def.getBaseExpr();
        Assert.assertTrue(base instanceof E_Multiply);
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Examples of com.hp.hpl.jena.sparql.expr.ExprVar

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        Assert.assertEquals(1, base.getVarsMentioned().size());
    }
   
    @Test
    public void test_function_non_expansion_02() {
        Expr square = new E_Multiply(new ExprVar("x"), new ExprVar("x"));
        UserDefinedFunctionFactory.getFactory().add("http://example/square", square, new ArrayList<Var>(square.getVarsMentioned()));
       
        //This test illustrates that if we change the definition of square and call our function again we can
        //get a different result with dependencies preserved because the definition of the dependent function can change
        Expr cube = new E_Multiply(new E_Function("http://example/square", new ExprList(new ExprVar("x"))), new ExprVar("x"));
        UserDefinedFunctionFactory.getFactory().add("http://example/cube", cube, new ArrayList<Var>(cube.getVarsMentioned()));
       
        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
        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)));
       
        actual = f.getActualExpr();
        result = actual.eval(BindingFactory.create(), FunctionEnvBase.createTest());
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