Examples with Substitution fr.lirmm.graphik.graal.api.core.Substitution used on opensource projects

Example 6 with Substitution

use of fr.lirmm.graphik.graal.api.core.Substitution in project graal by graphik-team.

the class UnifierTest method example35MelanieThesis.

@Test
public void example35MelanieThesis() {
    Rule rule = DefaultRuleFactory.instance().create();
    rule.getBody().add(TestUtils.pXY);
    rule.getHead().add(TestUtils.qXY);
    InMemoryAtomSet atomset = DefaultAtomSetFactory.instance().create();
    atomset.add(TestUtils.qUV);
    atomset.add(TestUtils.pVW);
    atomset.add(TestUtils.qTW);
    CloseableIteratorWithoutException<Substitution> unifiers = DefaultUnifierAlgorithm.instance().computePieceUnifier(rule, atomset);
    Assert.assertEquals(2, Iterators.count(unifiers));
}

Example 7 with Substitution

use of fr.lirmm.graphik.graal.api.core.Substitution in project graal by graphik-team.

the class UnifierTest method unificationExistentialWithFrontier.

@Test
public void unificationExistentialWithFrontier() {
    Rule rule = DefaultRuleFactory.instance().create();
    rule.getBody().add(TestUtils.sX);
    rule.getHead().add(TestUtils.pXY);
    InMemoryAtomSet atomset = DefaultAtomSetFactory.instance().create();
    atomset.add(TestUtils.pUU);
    CloseableIteratorWithoutException<Substitution> unifiers = DefaultUnifierAlgorithm.instance().computePieceUnifier(rule, atomset);
    Assert.assertEquals(0, Iterators.count(unifiers));
}

Example 8 with Substitution

use of fr.lirmm.graphik.graal.api.core.Substitution in project graal by graphik-team.

the class UnifierTest method pieceUnifierTest2.

@Test
public void pieceUnifierTest2() {
    Rule rule = DefaultRuleFactory.instance().create();
    rule.getBody().add(TestUtils.sX);
    rule.getHead().add(TestUtils.pXB);
    InMemoryAtomSet atomset = DefaultAtomSetFactory.instance().create();
    atomset.add(TestUtils.pAU);
    CloseableIteratorWithoutException<Substitution> unifiers = DefaultUnifierAlgorithm.instance().computePieceUnifier(rule, atomset);
    Assert.assertEquals(1, Iterators.count(unifiers));
}

Example 9 with Substitution

use of fr.lirmm.graphik.graal.api.core.Substitution in project graal by graphik-team.

the class IDCompilationTest method test3.

/**
 * Given p(X,Y) -> q(X,Y,X,Y,X) <br>
 * Then rew(q(U,V,A,B,V)) <br>
 * Return q(U,V,A,B,V)-{}
 */
@Test
public void test3() {
    Predicate predicateQ = new Predicate("q", 5);
    Predicate predicateP = new Predicate("p", 2);
    Atom body = new DefaultAtom(predicateP, X, Y);
    Atom head = new DefaultAtom(predicateQ, X, Y, X, Y, X);
    Atom query = new DefaultAtom(predicateQ, U, V, A, B, V);
    RuleSet rules = new LinkedListRuleSet();
    rules.add(DefaultRuleFactory.instance().create(body, head));
    RulesCompilation comp = new IDCompilation();
    comp.compile(rules.iterator());
    Collection<Pair<Atom, Substitution>> rewritingOf = comp.getRewritingOf(query);
    Assert.assertEquals(1, rewritingOf.size());
    Pair<Atom, Substitution> p = rewritingOf.iterator().next();
    Atom a = p.getLeft();
    Substitution s = p.getRight();
    Assert.assertEquals(predicateQ, a.getPredicate());
    Assert.assertEquals(U, a.getTerm(0));
    Assert.assertEquals(V, a.getTerm(1));
    Assert.assertEquals(A, a.getTerm(2));
    Assert.assertEquals(B, a.getTerm(3));
    Assert.assertEquals(V, a.getTerm(4));
    Assert.assertEquals(0, s.getTerms().size());
}

Example 10 with Substitution

use of fr.lirmm.graphik.graal.api.core.Substitution in project graal by graphik-team.

the class IDCompilationTest method test2.

/**
 * Given p(X,Y) -> q(X,Y,X) <br>
 * Then rew(q(U,U,U)) <br>
 * Return q(U,U,U)-{} AND p(U,U)-{})
 */
@Test
public void test2() {
    Predicate predicateQ = new Predicate("q", 3);
    Predicate predicateP = new Predicate("p", 2);
    Atom body = new DefaultAtom(predicateP, X, Y);
    Atom head = new DefaultAtom(predicateQ, X, Y, X);
    Atom query = new DefaultAtom(predicateQ, U, U, U);
    RuleSet rules = new LinkedListRuleSet();
    rules.add(DefaultRuleFactory.instance().create(body, head));
    RulesCompilation comp = new IDCompilation();
    comp.compile(rules.iterator());
    Collection<Pair<Atom, Substitution>> rewritingOf = comp.getRewritingOf(query);
    boolean rew1 = false;
    boolean rew2 = false;
    for (Pair<Atom, Substitution> p : rewritingOf) {
        Atom a = p.getLeft();
        Substitution s = p.getRight();
        if (a.getPredicate().equals(predicateQ)) {
            rew1 = true;
            Assert.assertEquals(U, a.getTerm(0));
            Assert.assertEquals(U, a.getTerm(1));
            Assert.assertEquals(U, a.getTerm(2));
            Assert.assertEquals(0, s.getTerms().size());
        } else {
            rew2 = true;
            Assert.assertEquals(predicateP, a.getPredicate());
            Assert.assertEquals(U, a.getTerm(0));
            Assert.assertEquals(U, a.getTerm(1));
            Assert.assertEquals(0, s.getTerms().size());
        }
    }
    Assert.assertTrue(rew1 && rew2);
    Assert.assertEquals(2, rewritingOf.size());
}