Examples with Query org.jpl7.Query used on opensource projects

Example 51 with Query

use of org.jpl7.Query in project packages-jpl by SWI-Prolog.

the class TestJUnit method testVariableBinding3.

public void testVariableBinding3() {
    Variable X = new Variable("X");
    Term lhs = new Compound("p", new Term[] { X, X });
    Term rhs = new Compound("p", new Term[] { new Atom("a"), new Atom("b") });
    Term goal = new Compound("=", new Term[] { lhs, rhs });
    assertFalse("two references to the same (named) Variable cannot unify with differing atoms", new Query(goal).hasSolution());
}

Example 52 with Query

use of org.jpl7.Query in project packages-jpl by SWI-Prolog.

the class TestJUnit method testArrayToList1.

public void testArrayToList1() {
    Term l2 = Util.termArrayToList(new Term[] { new Atom("a"), new Atom("b"), new Atom("c"), new Atom("d"), new Atom("e") });
    Query q9 = new Query(new Compound("append", new Term[] { new Variable("Xs"), new Variable("Ys"), l2 }));
    assertTrue("append(Xs,Ys,[a,b,c,d,e]) has 6 solutions", q9.allSolutions().length == 6);
}

Example 53 with Query

use of org.jpl7.Query in project packages-jpl by SWI-Prolog.

the class TestJUnit method testDontTellMeMode2.

public void testDontTellMeMode2() {
    final Query q = new Query("setof(_M,current_module(_M),_Ms),length(_Ms,N)");
    JPL.setDTMMode(false);
    assertTrue("not in dont-tell-me mode, setof(_M,current_module(_M),_Ms),length(_Ms,N) returns binding for three variables", q.oneSolution().keySet().size() == 3);
}

Example 54 with Query

use of org.jpl7.Query in project packages-jpl by SWI-Prolog.

the class TestJUnit method testOpenGetClose2.

public void testOpenGetClose2() {
    // we're not going to open this...
    Query q = new Query("dummy");
    try {
        // should throw exception (query not open)
        q.getSolution();
        // shouldn't get
        fail("getSolution() succeeds on unopened Query");
    // to here
    } catch (JPLException e) {
        // expected exception class
        if (e.getMessage().endsWith("Query is not open")) {
        // OK: an appropriate exception was thrown
        } else {
            fail("jpl.Query#getSolution() threw wrong JPLException: " + e);
        }
    } catch (Exception e) {
        fail("jpl.Query#getSolution() threw wrong exception class: " + e);
    }
}

Example 55 with Query

use of org.jpl7.Query in project packages-jpl by SWI-Prolog.

the class TestJUnit method testVariableBinding5.

public void testVariableBinding5() {
    Variable Anon = new Variable("_");
    Term lhs = new Compound("p", new Term[] { Anon, Anon });
    Term rhs = new Compound("p", new Term[] { new Atom("a"), new Atom("b") });
    Term goal = new Compound("=", new Term[] { lhs, rhs });
    assertTrue("two references to an anonymous Variable can unify with differing atoms", new Query(goal).hasSolution());
}