Examples with Expr org.apache.jena.sparql.expr.Expr used on opensource projects

Example 51 with Expr

use of org.apache.jena.sparql.expr.Expr in project jena by apache.

the class TestExpressions method testNumeric.

private static void testNumeric(String string, double d) {
    Expr expr = parse(string);
    NodeValue v = expr.eval(BindingFactory.binding(), new FunctionEnvBase());
    assertTrue(v.isDouble());
    assertEquals(d, v.getDouble(), 0);
}

Example 52 with Expr

use of org.apache.jena.sparql.expr.Expr in project jena by apache.

the class TestExpressions2 method eval.

// It's easier to write tests that simply are expected to return true/false 
/*package*/
static void eval(String string, boolean result) {
    Expr expr = ExprUtils.parse(string);
    NodeValue nv = expr.eval(null, FunctionEnvBase.createTest());
    boolean b = XSDFuncOp.booleanEffectiveValue(nv);
    assertEquals(string, result, b);
}

Example 53 with Expr

use of org.apache.jena.sparql.expr.Expr in project jena by apache.

the class SelectHandlerTest method testAddAggregateStringVar.

@Test
public void testAddAggregateStringVar() {
    Var v = Var.alloc("foo");
    handler.addVar("count(*)", v);
    VarExprList expr = query.getProject();
    assertEquals(1, expr.size());
    Expr e = expr.getExpr(Var.alloc("foo"));
    assertNotNull("expression should not be null", e);
    assertTrue("Should be an ExprAggregator", e instanceof ExprAggregator);
    assertTrue("Should be AggCount", ((ExprAggregator) e).getAggregator() instanceof AggCount);
}

Example 54 with Expr

use of org.apache.jena.sparql.expr.Expr in project jena by apache.

the class SelectHandlerTest method testAddStringWithPrefixVar.

@Test
public void testAddStringWithPrefixVar() {
    query.setPrefix("xsd", "http://www.w3.org/2001/XMLSchema#");
    Var v = Var.alloc("foo");
    handler.addVar("sum(xsd:integer(?V3))", v);
    VarExprList expr = query.getProject();
    assertEquals(1, expr.size());
    Expr e = expr.getExpr(Var.alloc("foo"));
    assertNotNull("expression should not be null", e);
    assertTrue("Should be an ExprAggregator", e instanceof ExprAggregator);
    assertTrue("Should contain an AggSum", ((ExprAggregator) e).getAggregator() instanceof AggSum);
}

Example 55 with Expr

use of org.apache.jena.sparql.expr.Expr in project jena by apache.

the class SelectHandlerTest method testAddExprVar.

@Test
public void testAddExprVar() {
    Var v = Var.alloc("foo");
    handler.addVar(new E_Random(), v);
    VarExprList expr = query.getProject();
    assertEquals(1, expr.size());
    Expr e = expr.getExpr(Var.alloc("foo"));
    assertNotNull("expression should not be null", e);
    assertTrue("Should be an E_Random", e instanceof E_Random);
}