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

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

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    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);
        E_Multiply multiply = (E_Multiply)base;
        Assert.assertTrue(multiply.getArg1() instanceof E_Function);
        Assert.assertTrue(multiply.getArg2() instanceof ExprVar);
        E_Function lhs = (E_Function)multiply.getArg1();
        Assert.assertEquals("http://example/square", lhs.getFunctionIRI());
        Assert.assertEquals(1, base.getVarsMentioned().size());
    }
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        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)));
       
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        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 false (the default) that the definition of cube is actually
        //expanded to include the definition of square
        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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        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 false (the default) that the definition of cube is actually
        //expanded to include the definition of square
        Expr cube = new E_Multiply(new E_Function("http://example/square", new ExprList(new ExprVar("y"))), new ExprVar("y"));
        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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        //Test that with preserveDependencies set to false (the default) that the definition is expanded appropriately
        ExprList numArgs = new ExprList();
        numArgs.add(new NodeValueInteger(1));
        numArgs.add(new NodeValueDouble(2.3));
        Expr test = new E_Function("http://example/takeaway", numArgs);
        UserDefinedFunctionFactory.getFactory().add("http://example/test", test, new ArrayList<Var>());
       
        UserDefinedFunctionDefinition def = UserDefinedFunctionFactory.getFactory().get("http://example/test");
        Expr base = def.getBaseExpr();
        Assert.assertTrue(base instanceof E_Subtract);
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        //Test that with preserveDependencies set to false (the default) that the definition is expanded appropriately
        ExprList numArgs = new ExprList();
        numArgs.add(new NodeValueDouble(2.3));
        numArgs.add(new NodeValueInteger(1));
        Expr test = new E_Function("http://example/takeaway", numArgs);
        UserDefinedFunctionFactory.getFactory().add("http://example/test", test, new ArrayList<Var>());
       
        UserDefinedFunctionDefinition def = UserDefinedFunctionFactory.getFactory().get("http://example/test");
        Expr base = def.getBaseExpr();
        Assert.assertTrue(base instanceof E_Subtract);
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        altArgs.add(new ExprVar("a"));
        altArgs.add(new ExprVar("b"));
        ArrayList<Var> defArgs = new ArrayList<Var>();
        defArgs.add(Var.alloc("a"));
        defArgs.add(Var.alloc("b"));
        Expr test = new E_Function("http://example/takeaway", altArgs);
        UserDefinedFunctionFactory.getFactory().add("http://example/test", test, defArgs);
       
        UserDefinedFunctionDefinition def = UserDefinedFunctionFactory.getFactory().get("http://example/test");
        Expr base = def.getBaseExpr();
        Assert.assertTrue(base instanceof E_Subtract);
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        altArgs.add(new ExprVar("b"));
        altArgs.add(new ExprVar("a"));
        ArrayList<Var> defArgs = new ArrayList<Var>();
        defArgs.add(Var.alloc("a"));
        defArgs.add(Var.alloc("b"));
        Expr test = new E_Function("http://example/takeaway", altArgs);
        UserDefinedFunctionFactory.getFactory().add("http://example/test", test, defArgs);
       
        UserDefinedFunctionDefinition def = UserDefinedFunctionFactory.getFactory().get("http://example/test");
        Expr base = def.getBaseExpr();
        Assert.assertTrue(base instanceof E_Subtract);
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        //Test that with preserveDependencies set to false (the default) that the definition is expanded appropriately
        //when the outer function has differing numbers of arguments
        List<Var> args = new ArrayList<Var>();
        args.add(Var.alloc("x"));
        args.add(Var.alloc("y"));
        Expr add = new E_Add(new E_Function("http://example/single", new ExprList(new ExprVar("x"))), new ExprVar("y"));
        UserDefinedFunctionFactory.getFactory().add("http://example/add", add, args);
       
        UserDefinedFunctionDefinition def = UserDefinedFunctionFactory.getFactory().get("http://example/add");
        Expr base = def.getBaseExpr();
        Assert.assertTrue(base instanceof E_Add);
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        //Test that with preserveDependencies set to false (the default) that the definition is expanded appropriately
        //when the outer function has differing numbers of arguments
        List<Var> args = new ArrayList<Var>();
        args.add(Var.alloc("x"));
        args.add(Var.alloc("y"));
        Expr add = new E_Add(new E_Function("http://example/single", new ExprList(new ExprVar("y"))), new ExprVar("y"));
        UserDefinedFunctionFactory.getFactory().add("http://example/add", add, args);
       
        UserDefinedFunctionDefinition def = UserDefinedFunctionFactory.getFactory().get("http://example/add");
        Expr base = def.getBaseExpr();
        Assert.assertTrue(base instanceof E_Add);
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Related Classes of com.hp.hpl.jena.sparql.expr.E_Function

  • com.hp.hpl.jena.sparql.function.FunctionFactory
  • com.hp.hpl.jena.sparql.function.FunctionRegistry
  • com.hp.hpl.jena.sparql.function.user.TestFunctionExpansion
  • com.hp.hpl.jena.sparql.function.user.TestFunctionNonExpansion
  • com.hp.hpl.jena.sparql.ARQInternalErrorException
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